Minifinity The Classic Mini Forum and Resource | • View topic - Savage - 1430 supercharged project

Savage - 1430 supercharged project

A place for everyone to share their experiences of pain, pleasure, sorrow and excitement... relating to their mini projects of course !

Moderators: Club Admins, Minifinity Staff

Savage - 1430 supercharged project

Postby Zippyrude » Thu 28th Feb 2008, 01:57pm

Well I bought her (a her because 'Hell hath no fury like a woman scorned") and when i finish with her she will be 'Savage' (and im hoping nothing like Lilly ;) ).

I saw her advertised in the freeads in Chatham, i had always wanted a tax exempt mini and here was my opportunity!

She had been garaged for 6 years and had undergone a full restoration a few years before that. Some of the 'resto' has a bit to be desired. The paint was applied quite thick and there are dreaded oversills !

Image

On the whole she looks a solid car, all standard apart from bucket seats and a full roll cage !

Image

After some negotiating we agreed on a tidy sum of £225 quid :brumbrum:

Image

I have quite a few plans for her that involve a changes to the engine, fiesta brake conversion is planned and some suspension mods. On the whole, and at the moment, i want her to look fairly standard (in so far as is possible).
User avatar
Zippyrude
Contributor
Contributor
 
Posts: 12057
Joined: Tue 28th Oct 2003, 08:46pm
Location: Lauhdun innit
Tag Line: Help support Minifinity
paypal@minifinity.com
Drives: projects galore

Re: Meet "Savage"

Postby Zippyrude » Tue 15th Jul 2008, 11:27pm

Well the time has come to make a start on the engine.

The current plan is to build the following spec engine:-

A+ 1430cc
E45 Supercharger
Weber 45
Ph3 cam
St3 head
Megajolt
Ultralight flywheel, preverto with paddle clutch
SC drops
x-pin diff
2.9 fd

Things may change but this is the current plan. I intend to build an engine that has a torquey delivery over raw bhp.

Under the AC Dodd's expert eye the build will be detailed. I hope to use the build diary as a base for some technical guides where possible.

So after much waiting the first stage (choosing a suitable block for the build ) is documented below.......
User avatar
Zippyrude
Contributor
Contributor
 
Posts: 12057
Joined: Tue 28th Oct 2003, 08:46pm
Location: Lauhdun innit
Tag Line: Help support Minifinity
paypal@minifinity.com
Drives: projects galore

Re: Meet "Savage"

Postby Zippyrude » Tue 15th Jul 2008, 11:28pm

Block selection - Part 1
Assessing cylinder to oilway thickness

If a block is intended to be bored out to accept oversize pistons it is important that the block can be bored out without cutting into the oilways, or leaving the wall of the oilway so thin that it may crack or collapse.

The first stage of the engine build is to select the best block for the application. As i will be boring the block to accept 73.5mm pistons the block must be assessed for suitability.

You can see below a block on a small engine stand. A suitable adapter is used in order to hold the A-series block on the engine stand. I cannot stress how much easier it is to work properly on an engine when it is held securely on a stand. The engine stand is in my opinion an essential piece of garage equipment.

Image

The first check carried out is to assess whether the block will support offset boring by the required amount.

The clearance between the oilway and cylinder number 4 must be checked. A dowel or drill is placed into the oil way. In this instance the 8mm drill bit was the largest size that fitted with no play.

The first check is to verify whether the oil way is parallel to the side of the block. The distance between the edge of the block and the drill bit is measured near the block and at intervals. In this instance the spacing was constant which signifies that the oilway was parallel to the block.

Image

A measurement must be taken between the side of the block and the inside of the cylinder. The side of the block is cleaned on any rust so that an accurate measurement can be recorded.

Image

Image

A measurement is taken, in this case with a vernier. The vernier is zeroed and the outermost point of the cylinder is measured against the side of the block. Care must be taken to ensure that the measurement is taken parallel to the block and cylinder. The smallest measurement signifies the thinnest part of the block as illustrated.

In this example the distance between the cylinder and the side of the block was 0.929"

Image

The next stage is to measure the distance between the side of the block and the drill bit. A vernier or depth micrometer can be used for taking this measurement.

In this case a metal engineers rule is used as a straight edge against the side of the block. The metal rule is measured and the vernier is zeroed. This means that when the vernier reads '0' the tip is level with the side of the block.

The vernier is opened until the tip touches the drill bit. It is important that the base of the vernier is flat and parallel with the metal rule, and that the tip of the vernier touches the central part of the drill bit.

Image

Image

The measurement taken above was 0.518". This represents the thickness between the side of the block and the outermost part of the oilway.

Now we need to do some maths to calculate whether this block will accept the required overbore.

Parameters
Block side to oilway = 0.518"
Block side to cylinder = 0.929"
Oilway diameter = 8mm = 0.315"

Calculations:

Distance between Oilway and Cylinder =
0.929" - 0.518" = 0.411"

(Distance between Oilway and Cylinder) - Oilway diameter =
0.411" - 0.315" = 0.096"

This is the nominal distance between the cylinder and the innermost oilway wall.

Now we need to take into account the boring and offset.

The cylinder will be bored out by 0.113". The increase in cylinder diameter is divided by two as we only need to take into account the increase on the one side of the cylinder.

In addition the boring is offset by 0.015". This means that cylinders 3 and 4 are effectively bored 0.015" outwards from the centre of the block.

So:
Cylinder to inner oilway wall - half of bore increase - offset = ?

0.096" - (0.113/2) - 0.015"

= 0.096" - 0.0565" - 0.015"

= 0.0245"

This signifies that if the cylinder is bored by 113 thou and offset by 15thou, the distance between the cylinder wall and the oilway will be 24.5 thou.

Five blocks were measured for suitability. Two blocks, if bored would have resulted in the cylinder exposing the oilway. Two blocks resulted in 10 and 11 thou cylinder to oilway clearance. So far this block is the best.

This method was carried out on a block with standard sized cylinders. It is based on the assumption that that the bores and oilway have been cut correctly at the factory and are parallel to the side of the block.

Block Selection - Part 2
Assessing cam follower tolerances

This check is not deemed an essential, but good practice (and a further consideration in terms of block selection) if sufficient donor blocks are available.

The cam follower and the amount of slack with which it fits in the follower hole can affect the performance of an engine. As the camshaft rotates, any slack between the follower and its hole will be taken as the vertical movement of the follower also takes place. Therefore the accuracy of the camshaft timing will be compromised if the follower does not fit snugly.

The check is carried out with a gudgeon pin from a 1275 engine. The nominal size of a gudgeon pin is 0.8125". Typical variation of a gudgeon pin is 0.0005" (half a thou) under the nominal size, therefore 0.812" to 0.8125" .

Image

The gudgeon pin has to slide in the hole with no 'wiggle'. A tight fit is essential for a good engine build. If the gudgeon pin slides in with sufficient slack so that it can be wiggled in the hole the engine build will not be optimal.

The above describes a method using the feel of the gudgeon pin to evaluate the tolerances. Should you wish to measure the differences between the hole and the the cam follower a maximum clearance of 0.002" should be aimed for.

Image

© minifinity
User avatar
Zippyrude
Contributor
Contributor
 
Posts: 12057
Joined: Tue 28th Oct 2003, 08:46pm
Location: Lauhdun innit
Tag Line: Help support Minifinity
paypal@minifinity.com
Drives: projects galore

Re: Meet "Savage"

Postby patlink » Wed 16th Jul 2008, 04:15pm

very very impressive you'll have the best help you can find with the engine for sure.
User avatar
patlink
 
Posts: 1629
Joined: Sun 24th Jun 2007, 07:44pm
Location: widnes/cheshire
Tag Line: nut rivets rule
Drives: austin mayfiar

Re: Meet "Savage"

Postby Dowson » Thu 17th Jul 2008, 09:20am

Just a standard engine then dude! :wink:

Looking good!
User avatar
Dowson
 
Posts: 5746
Joined: Mon 14th Feb 2005, 02:58pm
Location: Co Durham
Drives: Racing Green, A1

Re: Meet "Savage"

Postby MrMini » Thu 17th Jul 2008, 11:49am

Looks like a bargain you got there mate! 8.)
User avatar
MrMini
 
Posts: 999
Joined: Thu 10th Feb 2005, 11:40pm
Location: Birmingham
Drives: Citroen C1
Mk3 Matt black monster
Mk1 replica

Re: Meet "Savage"

Postby patlink » Sat 2nd Aug 2008, 10:47pm

any more progress with the engine?
User avatar
patlink
 
Posts: 1629
Joined: Sun 24th Jun 2007, 07:44pm
Location: widnes/cheshire
Tag Line: nut rivets rule
Drives: austin mayfiar

Re: Meet "Savage"

Postby Lilspeed » Tue 9th Sep 2008, 10:04pm

Nice!! So, will it be fast then? :lol:
User avatar
Lilspeed
Contributor
Contributor
 
Posts: 342
Joined: Tue 7th Mar 2006, 08:59pm
Location: Yeovil
Tag Line: Ain't the chrome that gets you home.
Drives: Mini Based Freestyle Buggy

Re: Meet "Savage"

Postby TooFPaste39 » Wed 10th Sep 2008, 07:47pm

Red is the fastest color.
TooFPaste39
 
Posts: 41
Joined: Wed 3rd Sep 2008, 10:06pm
Location: Mildenhall, Suffolk

Re: Meet "Savage"

Postby R.P.C » Wed 10th Sep 2008, 08:03pm

TooFPaste39 wrote:Red is the fastest color.

If you have the tallent to use it ;)
User avatar
R.P.C
 
Posts: 1737
Joined: Sat 21st Jun 2008, 01:54pm
Location: not here any more
Tag Line: ----
Drives: ----

Re: Meet "Savage"

Postby Mikey13 » Thu 11th Sep 2008, 10:42am

should be fairly nippy then ;) be good to see it when it is finished

what sort of power are you hoping for from that setup?
User avatar
Mikey13
 
Posts: 3609
Joined: Wed 19th Jan 2005, 11:16am
Location: Surrey
Tag Line: If its not broke, your not trying hard enough!!
Drives: 2000 - Supercharged MPi, 2005 - CTR, 2004 - S2000

Re: Meet "Savage"

Postby patlink » Tue 27th Jan 2009, 11:17pm

any progress?
User avatar
patlink
 
Posts: 1629
Joined: Sun 24th Jun 2007, 07:44pm
Location: widnes/cheshire
Tag Line: nut rivets rule
Drives: austin mayfiar

Re: Meet "Savage"

Postby patlink » Sun 31st May 2009, 10:32pm

i want to see the engine porn :D
User avatar
patlink
 
Posts: 1629
Joined: Sun 24th Jun 2007, 07:44pm
Location: widnes/cheshire
Tag Line: nut rivets rule
Drives: austin mayfiar

Re: Meet "Savage"

Postby Zippyrude » Sun 31st May 2009, 10:41pm

Hehe after nearly a year my custom made forged pistons arrived !

I have been very busy with stuff over the past few months but the engine will go progress.

I have also made a start on stress relieving the crank in advance of the offset grind / hardening etc.

Pics to follow :)
User avatar
Zippyrude
Contributor
Contributor
 
Posts: 12057
Joined: Tue 28th Oct 2003, 08:46pm
Location: Lauhdun innit
Tag Line: Help support Minifinity
paypal@minifinity.com
Drives: projects galore

Re: Meet "Savage"

Postby dannoodle » Mon 1st Jun 2009, 09:33am

custom made forged pistons?? if you dont mind me asking...why?
User avatar
dannoodle
 
Posts: 1766
Joined: Wed 2nd Jul 2008, 10:23am
Location: Ashford
Tag Line: brmm brmm brmmmmmmmmm
Drives: Brit' 'open

Re: Meet "Savage"

Postby themaninthesuitcase » Mon 1st Jun 2009, 11:11am

dannoodle wrote:custom made forged pistons?? if you dont mind me asking...why?


I am going to guess he got a 5th one made up and the dish will be suitable for his morning cornflakes.
User avatar
themaninthesuitcase
 
Posts: 13463
Joined: Sun 28th Nov 2004, 08:21pm
Location: Brooklands
Tag Line: Tesco value Jack Osbourne.
Drives: Clubby estate (broken), Audi A3.

Re: Meet "Savage"

Postby patlink » Fri 26th Jun 2009, 05:52pm

you love to keep use hanging rudi :lol: were is the progress
User avatar
patlink
 
Posts: 1629
Joined: Sun 24th Jun 2007, 07:44pm
Location: widnes/cheshire
Tag Line: nut rivets rule
Drives: austin mayfiar

Re: Meet "Savage"

Postby RikWalsh » Mon 10th Aug 2009, 12:22am

Dude,

Whats the crack here - Pull yer thumb out :wink:




Rik
User avatar
RikWalsh
 
Posts: 5465
Joined: Tue 2nd May 2006, 06:42pm
Location: Oxfordshire
Tag Line: Ignore my posts - I'm sober.. E.A.P.B.A.M
Drives: 998 Mini - Joc,
1293 Clubby, BMW E91 320i (LCI)

Re: Meet "Savage"

Postby Zippyrude » Mon 21st Mar 2011, 11:50pm

Ok folks we have progress!

First thing after the initial block prep was to measure up the con rods and make sure they were fit for purpose.

Image

The rods were bought a few years ago and are becoming quite rare. The 1430 conversion requires A521 or A625s, often referred to as cooper s rods. The big ends are 1.625", same size as 998 big ends! It is important that they are in good condition with the extra power of a supercharger and increased capacity :)

Image

Lovely stuff!

They were all numbered, possibly from the factory. Viewing the con rod from this position will reveal any damage that may have been caused by a careless engine builder when splitting the rod. Hammer marks and burrs are often found on the edges of the cap. If the cap needs any persuasion it should be done with a small copper or hide mallet, never with a normal hammer. As you can see from the photo these were in good condition.

Image

The next job is to give them a good clean and remove any oil and dirt, a bit of brake cleaner and a blow with the air gun...

Any deburring to the cap mating edges would need to take place now with a file. I have seen con rod caps butchered with hammers and even screwdrivers to prise them apart before. Luckily these were fine in that respect.

Image

A visual inspection follows, checking in particular for the markings on the journal thrust faces. All these con rods had the machining marks present and even. This is a very good sign in that it shows that the rods have run in the previous engine true, that is to say they have not been forced at an angle due to off square cylinders or poorly even machined crank journals. Another very positive sign.

Next we move on to preparing the rod for measurements. Firstly the inside of the big end is cleaned up with some 1000 grit emery paper and paraffin. No excessive force, just enough to remove the thin film of dirt, grime, film, etc.

Image

This is done so that there is a smooth finish ready for measuring...

Image

and the same is done with the small end

Image

and after

Image

Next, measurements and essential tools of the trade. Below the micrometer, nominal measurements for the conrod big end and the dial bore gauge :)

Image

Measuring the hole, the dial bore gauge is zeroed on the micrometer and then measurements relative to the micrometer setting are taken. The two figures will enable us to determine the actual measurement.

Image

In this instance the sizes were +0.00025" the smaller nominal, so 1.7705" + 0.00025" = 1.77075", right in the middle of the range :)

The small ends were measured in the same way based on a nominal 0.8121" gudgeon pin size. All the small ends measured 0.001" - 0.0015". The minimum interference fit is 0.0007" so these will be a nice tight fit!

So a critical part of the planning and preparation stage is partially completed, we still have a couple more checks to do (to follow).
User avatar
Zippyrude
Contributor
Contributor
 
Posts: 12057
Joined: Tue 28th Oct 2003, 08:46pm
Location: Lauhdun innit
Tag Line: Help support Minifinity
paypal@minifinity.com
Drives: projects galore

Re: Savage - 1430 supercharged project

Postby Zippyrude » Mon 9th May 2011, 11:59pm

The next stage of the build required the crank. This was stress relieved by grinding smooth the casting marks and any sharp edges. The work was carried out with an angle grinder with a soft pad and then a flap wheel with various grades of abrasive roll to polish the surface.

Once complete the crank was sent off to be machined. The 1430 build needs some specific machining, namely offset grinding of the big end bearings in order to increase the stroke. This machining is carried out on a pre A+ crank.

The work on the crank included:

- Big ends offset ground 84.3 mm
- Mains reground 0.010"
- Wedged
- X-drilled
- Balanced
- Hardened (ni-tempered)

Image

Image

Image

As with any good quality build, components should be measured and sizes verified. The measurements were as follows:-

Nominal pre A+ main bearing journal: 2.0005" - 2.001"
(Nominal A+ main bearing journal: 2.0011" - 2.0017")

Main journal measurements:
#1 journal: 1.9904"
#2 journal: 1.9904"
#3 journal: 1.9905"

A variance of 0.0001" (one tenth of a thousandth of an inch) all within acceptable tolerances

Big end journal measurements:
#1 journal: 1.6258"
#2 journal: 1.6253"
#3 journal: 1.6251"
#4 journal: 1.6253"

A variance of 0.0007" (seven tenths of a thousandth of an inch), again all within acceptable tolerance.

Watch this space for the next updates :)
User avatar
Zippyrude
Contributor
Contributor
 
Posts: 12057
Joined: Tue 28th Oct 2003, 08:46pm
Location: Lauhdun innit
Tag Line: Help support Minifinity
paypal@minifinity.com
Drives: projects galore

Re: Savage - 1430 supercharged project

Postby dazzler » Tue 10th May 2011, 09:33am

that lot will all be rusty before you have put it together if you dont get a shift on!
User avatar
dazzler
Contributor
Contributor
 
Posts: 3721
Joined: Fri 1st Oct 2004, 06:12pm
Location: Stafford ST16
Tag Line: Help support Minifinity - paypal@minifinity.com
Drives: none they are all broke

Re: Savage - 1430 supercharged project

Postby Zippyrude » Tue 10th May 2011, 11:11am

:lol: cheeky rhubarber

At least i finish my projects :P
User avatar
Zippyrude
Contributor
Contributor
 
Posts: 12057
Joined: Tue 28th Oct 2003, 08:46pm
Location: Lauhdun innit
Tag Line: Help support Minifinity
paypal@minifinity.com
Drives: projects galore

Re: Savage - 1430 supercharged project

Postby philster » Tue 10th May 2011, 03:59pm

dazzler wrote:that lot will all be rusty before you have put it together if you dont get a shift on!
:lol: :lol: :lol:

I was going to say your updates take nearly as long as mine :D
User avatar
philster
Contributor
Contributor
 
Posts: 11797
Joined: Fri 19th Nov 2004, 09:18pm
Location: Bolton - Northwest
Tag Line: go play down your own end of the street!
Drives: mini 25 originally! Zafira GSI

Re: Savage - 1430 supercharged project

Postby patlink » Fri 13th May 2011, 09:39pm

great work
User avatar
patlink
 
Posts: 1629
Joined: Sun 24th Jun 2007, 07:44pm
Location: widnes/cheshire
Tag Line: nut rivets rule
Drives: austin mayfiar

Re: Savage - 1430 supercharged project

Postby Zippyrude » Sat 30th Jul 2011, 02:18pm

I have decided that the next piece of work will be the head. I intend to modify a standard head myself and ensure that the specifications / characteristics match my engine.

I dug out a couple of 1275 heads from my garage and gave them the once over, they both had a decent amount of thickness.

The first job was to remove the valves and give the chambers and valve throats a de-coke. This confirmed that the first head I checked was unleaded - a good start.

Valve seats can fall out, especially if the head has overheated, so a quick test was to try and lever them out with a medium screwdriver. None of them moved so another good sign!

The aim is to open up and reshape the valve seats/ throats, carry out some porting and reshape and resize the combustion chambers. Quite a bit of work!

The inlet valves are currently standard 33mm and to get the right power I will also need to increase the inlet valve size to 35.7mm

I cleaned up the exhaust valves and measured them, they show some minor wear but perfectly within tolerance for re-use.
User avatar
Zippyrude
Contributor
Contributor
 
Posts: 12057
Joined: Tue 28th Oct 2003, 08:46pm
Location: Lauhdun innit
Tag Line: Help support Minifinity
paypal@minifinity.com
Drives: projects galore

Re: Savage - 1430 supercharged project

Postby Zippyrude » Sun 29th Jan 2012, 07:56pm

I've been busy with non mini stuff 'n life but i managed to get a couple of hours in today on the head.

To date i pushed out the guides, ground the guide bosses out and enlarged the inlet valve throats. You should just be able to see a thinner intake valve seat. This is so I can increase the size of the valve.

The ports and throat work is almost done now. Left to do is some stone work, new guides, valve seat cutting on the head and valves, a bit more opening out of the intake valve seat and throat work and then some chamber work.

The job is very time consuming to do properly. Its all about the shape, not just about making the ports big. In fact big ports can be a bad thing depending on the engine spec and application.

Anyway, pics are fun so ive added some below...

Image

Image

Image

Image

Image

Image

Image

Image

Image

Image

Image

Image

Image

Image

Image
User avatar
Zippyrude
Contributor
Contributor
 
Posts: 12057
Joined: Tue 28th Oct 2003, 08:46pm
Location: Lauhdun innit
Tag Line: Help support Minifinity
paypal@minifinity.com
Drives: projects galore

Re: Savage - 1430 supercharged project

Postby Zippyrude » Sun 29th Jan 2012, 08:57pm

Oh and since the pics i blended in the locating ring ridge on the inlet ports :)
User avatar
Zippyrude
Contributor
Contributor
 
Posts: 12057
Joined: Tue 28th Oct 2003, 08:46pm
Location: Lauhdun innit
Tag Line: Help support Minifinity
paypal@minifinity.com
Drives: projects galore

Re: Savage - 1430 supercharged project

Postby Mikey13 » Mon 6th Feb 2012, 02:21pm

Has this journal really been this long :shock:

It will be epic once complete though
User avatar
Mikey13
 
Posts: 3609
Joined: Wed 19th Jan 2005, 11:16am
Location: Surrey
Tag Line: If its not broke, your not trying hard enough!!
Drives: 2000 - Supercharged MPi, 2005 - CTR, 2004 - S2000

Re: Savage - 1430 supercharged project

Postby MiniPeter » Mon 15th Oct 2012, 09:37am

It's been a whilesince there have been posted here, and I do not hope you have fitted the head just yet.

You need to rework the "divider" in the ports, they must not be sharp like they are in the pictures, they need to have a much more smooth radius to them.

In this picture:
Image

On a 16 valver you need to have a sharp divider like you have made here, but on a siameseport design it needs to have that radius in order to not loose flow.
MiniPeter
 
Posts: 24
Joined: Sun 7th Oct 2012, 03:31pm
Drives: Mini 1000

Re: Savage - 1430 supercharged project

Postby Zippyrude » Mon 15th Oct 2012, 09:42am

I know that ;)

They arent anywhere near finished, need to increase cc in chambers, then open up seat / throat for larger intakes, reshape throats then finish with stone
User avatar
Zippyrude
Contributor
Contributor
 
Posts: 12057
Joined: Tue 28th Oct 2003, 08:46pm
Location: Lauhdun innit
Tag Line: Help support Minifinity
paypal@minifinity.com
Drives: projects galore

Re: Savage - 1430 supercharged project

Postby MiniPeter » Mon 15th Oct 2012, 08:32pm

Zippyrude wrote:I know that ;)

They arent anywhere near finished, need to increase cc in chambers, then open up seat / throat for larger intakes, reshape throats then finish with stone


Allright, I'll crawl back into my den again :)
MiniPeter
 
Posts: 24
Joined: Sun 7th Oct 2012, 03:31pm
Drives: Mini 1000

Re: Savage - 1430 supercharged project

Postby Den. » Tue 8th Jan 2013, 02:42pm

Wow! Very impressive. I look forward to seeing what kind of power this puts out.
User avatar
Den.
 
Posts: 135
Joined: Tue 8th Apr 2008, 02:13pm
Location: Ontario, Canada
Tag Line: Petrolmaniac
Drives: Mini Cooper in GT Legends...Cyber driver!

Re: Savage - 1430 supercharged project

Postby SalC » Tue 8th Jan 2013, 04:22pm

cant believe i missed this little peach, Chatham is only 5 minutes walk down the road from my house! i dont understand the technical engine stuff but love pictures and am learning new names for the thingies and whatsits. look forward to seeing it all back together
SalC
Contributor
Contributor
 
Posts: 334
Joined: Tue 21st Aug 2012, 11:39am
Location: Kent
Drives: My other half up the wall :)

Re: Savage - 1430 supercharged project

Postby Zippyrude » Wed 9th Jan 2013, 09:49am

I'm not going for an all out power build. Max bhp is for pub talk, and a car with a better spread of torque throughout a wide range will often be a faster car, certainly for non race use.

I picked these up the other day, they will be rebuilt and will provide some good fuelling. I'll be making make a plenum chamber that that the supercharger will blow into...

Image
User avatar
Zippyrude
Contributor
Contributor
 
Posts: 12057
Joined: Tue 28th Oct 2003, 08:46pm
Location: Lauhdun innit
Tag Line: Help support Minifinity
paypal@minifinity.com
Drives: projects galore

Re: Savage - 1430 supercharged project

Postby Den. » Wed 9th Jan 2013, 02:01pm

Good point.
User avatar
Den.
 
Posts: 135
Joined: Tue 8th Apr 2008, 02:13pm
Location: Ontario, Canada
Tag Line: Petrolmaniac
Drives: Mini Cooper in GT Legends...Cyber driver!

Re: Savage - 1430 supercharged project

Postby crawford1982 » Sat 18th May 2013, 01:32pm

really detailed, lots of knowledge here buddy!!
User avatar
crawford1982
Contributor
Contributor
 
Posts: 54
Joined: Tue 19th Feb 2013, 09:19pm
Location: falkirk
Tag Line: yeah, I probably don't know.
Drives: mini mayfair

Re: Savage - 1430 supercharged project

Postby tempa » Sun 23rd Jun 2013, 10:08pm

Whats new then mate?
Procrastination finally overcome...
tempa
 
Posts: 351
Joined: Sun 3rd Dec 2006, 04:42pm
Tag Line: Lock stock and....
Drives: Minis

Re: Savage - 1430 supercharged project

Postby Zippyrude » Mon 24th Jun 2013, 12:55am

asboroadster wrote:Whats new then mate?


Nowt in terms of progress, will start next year now as work and studies have taken priority.

Bought a Quaiffe LSD for it though :twisted:
User avatar
Zippyrude
Contributor
Contributor
 
Posts: 12057
Joined: Tue 28th Oct 2003, 08:46pm
Location: Lauhdun innit
Tag Line: Help support Minifinity
paypal@minifinity.com
Drives: projects galore

Re: Savage - 1430 supercharged project

Postby dazzler » Wed 8th Jan 2014, 08:25pm

Its next year now... is it in the road yet?
User avatar
dazzler
Contributor
Contributor
 
Posts: 3721
Joined: Fri 1st Oct 2004, 06:12pm
Location: Stafford ST16
Tag Line: Help support Minifinity - paypal@minifinity.com
Drives: none they are all broke

Re: Savage - 1430 supercharged project

Postby Zippyrude » Sun 26th Oct 2014, 10:41am

So the head work has been continuing.

I will be fitting larger valves so the seats and throat on the inlets have been worked on, you'll see that the inlet seat is about 1mm. This will widen a tad when the seat is recut for the bigger valve.

The shapes of the work is good, so this was an exercise in looks over function. Many head builders also do a bit more and make it look shiney with a finer polish. There are various threads discussing how this can harm performance.

Image

Image

Image

Next is the fitting of the valve guides. Before this the head needs to be cleaned and dried, both the spring seat and the guide hole need cleaning.

Image

Image

The guides are pressed in with a collar that ensures the guides are pressed in to the correct height (and uniformly).

Image

Inlet guides done...
Image

Next stage is to ream the guides, do some maths and work out chamber volume required for the head to match the CR for the specification I have chosen...
User avatar
Zippyrude
Contributor
Contributor
 
Posts: 12057
Joined: Tue 28th Oct 2003, 08:46pm
Location: Lauhdun innit
Tag Line: Help support Minifinity
paypal@minifinity.com
Drives: projects galore


Return to Members Journals

Who is online

Users browsing this forum: No registered users and 9 guests

cron