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WEASEL149
Joined: 19 Aug 2005 Posts: 595 Location: UK, Sheffield
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Posted: Sun Mar 17, 2013 8:15 am Post subject: German Godzilla. The creation of a (2-tone) Green Monster... |
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Thought I'd start a build thread on here for what will hopefully be the rebirth of my 932, affectionately known as 'Bogey'.
She's a two-tone green car previously owned by both Colin Belton (930 Motorsport/Ninemeister) and Andrew Mearns (Auto Classica/Gmund Books).
The car has served me well for 12 years. I made some mild modifications to her when the head gasket blew after 2 years of owning her.
I fitted a 951 intercooler. The block was 'O' ringed and the head was clamped using Raceware studs.
Crank case breathing was improved using a kit that used to be sold by Turbo-Technics and a catch tank fitted.
Wastegate was refreshed and converted to dual port operation using a Blitz dual solenoid electronic boost controller.
This engine then stayed pretty much the same until 2011 when I noticed the car losing some water out of the 944 tank I had fitted.
Tests showed that the car was pressurising the coolant system when it hit 0.5 bar or more so the decision was made to pull the engine before it got worse.
I found a tiny pinhole leak near one of the 'O' rings and eventually decided to strip the whole engine after noticing pitting on one cam lobe.
The result showed all top compression rings were broken. Big-ends and bearings were mint but 3 main bearings didn't look too good.
The main cap that has the 2 smaller 12.9 bolts in was cracked so I decided to source some parts.
I ended up buying a complete NA engine, another NA short engine that had been raced a couple of times and a recon crank @0.25mm.
Previously I have kept the car looking reasonably stock but this time I decided to go all out with the engine at least.
I decided early on that the standard fuel and ignition system had to go and planned on full engine management.
Here is the car as it was before it was stripped down:-
_________________ 1979 UK 932
Last edited by WEASEL149 on Fri Jan 16, 2015 6:41 am; edited 1 time in total |
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WEASEL149
Joined: 19 Aug 2005 Posts: 595 Location: UK, Sheffield
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Posted: Sun Mar 17, 2013 8:46 am Post subject: |
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Lots of reading and research ensued. The more reading I do, the more I want to do to the car so it has gone a lot further than I originally planned.
My problems in general are budget, which is tiny and also work which takes up too much time, so this build has become a bit drawn-out.
I looked at various management solutions and decided on VEMS - mainly inspired by Raceboy's success with this ECU.
Also a used VEMSV3.3 with full wiring loom came up for sale on fleabay, so I bought it.
Plans so far are as follows:-
1)Engine management.
2)Change 951 intercooler for water/air chargecooler.
3)Fabricate new inlet manifold.
4)Fit Holset HY35 Turbo with new tubular exhaust manifold and a new external wastegate with screamer pipe.
5)Thermal management - larger more efficient alloy rad along with a large oil cooler.
6)Make selected upgrades to engine internals during this rebuild.
7)Fabricate new cold air intake to go with the rest of the new inlet system.
8)Custom cam.
9)New exhaust system - at least 3" from turbo back.
***Edited 6th Jan 2014*** _________________ 1979 UK 932
Last edited by WEASEL149 on Sun Feb 23, 2014 7:08 am; edited 2 times in total |
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RC
Joined: 25 Mar 2007 Posts: 2636 Location: Australia
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Posted: Sun Mar 17, 2013 9:00 am Post subject: |
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That`s quite a nice looking and original car Wes.
Just as well you got another block, way to go. Same with proper engine management, only way to go these days.
Good luck with the credit card as there`s no luck involved with engine building, just skill & $$$. _________________ World`s quickest 924 2L slushbox
Allan @ DTA wrote: | I have no issue with superchargers, they are for guys who want to drive a car rather than talk about horsepower with their baseball cap on backwards |
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WEASEL149
Joined: 19 Aug 2005 Posts: 595 Location: UK, Sheffield
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Posted: Sun Mar 17, 2013 9:55 am Post subject: |
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RC wrote: | That`s quite a nice looking and original car Wes.
Just as well you got another block, way to go. Same with proper engine management, only way to go these days.
Good luck with the credit card as there`s no luck involved with engine building, just skill & $$$. |
Thanks mate.
Very true what you say about engine building. I'm a machinist by trade and hate entrusting any machining work to others but have no choice.
No doubt I'll be double-checking all their sizes when it comes back _________________ 1979 UK 932 |
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WEASEL149
Joined: 19 Aug 2005 Posts: 595 Location: UK, Sheffield
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Posted: Sun Mar 17, 2013 10:44 am Post subject: |
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I realise I've posted various pics in other threads but thought I would collect them here.
First up are the velocity stacks for the new inlet manifold. Full radius and measure 74mm across the bell mouth then 46mm I.D. at the top, tapering down to 38mm at the bottom with a length of 170mm. The best I could find 'off the shelf'.
Here is the flange for the head:-
_________________ 1979 UK 932
Last edited by WEASEL149 on Mon Feb 24, 2014 1:12 am; edited 1 time in total |
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WEASEL149
Joined: 19 Aug 2005 Posts: 595 Location: UK, Sheffield
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Posted: Sun Mar 17, 2013 10:49 am Post subject: |
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A slight increase in the size of the oil cooler - a 50 row Setrab unit about the same size as the one fitted to the F40.
_________________ 1979 UK 932 |
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WEASEL149
Joined: 19 Aug 2005 Posts: 595 Location: UK, Sheffield
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Posted: Sun Mar 17, 2013 10:54 am Post subject: |
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To keep the engine cool I managed to obtain this - 4 core, 70mm thick Pace radiator with a low profile Kenlowe:-
_________________ 1979 UK 932 |
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WEASEL149
Joined: 19 Aug 2005 Posts: 595 Location: UK, Sheffield
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Posted: Sun Mar 17, 2013 11:09 am Post subject: |
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Fuel rail, courtesy of Ford - from 1.8L Duratec Mondeo.
Just needs modding for return.
This shows it lined up against my spare head
_________________ 1979 UK 932 |
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WEASEL149
Joined: 19 Aug 2005 Posts: 595 Location: UK, Sheffield
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Posted: Sun Mar 17, 2013 11:26 am Post subject: |
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630cc flow-matched Siemens Deka high Z injectors shown with 034 Motorsport alloy injector bungs.
I need to get new photos as I've modified the bungs slightly by shortening them on a surface grinder.
I also cut a little more thread in the head with an M24 tap so they sit a little further in.
Finally I'll be drilling the injector holes out in the head and enlarging them slightly. Using Trig and knowing the injector spray angle, it's easy to work out the hole size needed for unimpeded injector spray.
_________________ 1979 UK 932 |
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peterld
Joined: 10 Dec 2006 Posts: 947 Location: Noosa Heads QLD Australia
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Posted: Sun Mar 17, 2013 11:37 am Post subject: |
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WOW!!!! _________________ 80/81 932/8 ROW |
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WEASEL149
Joined: 19 Aug 2005 Posts: 595 Location: UK, Sheffield
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Posted: Sun Mar 17, 2013 11:50 am Post subject: |
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Forged 2618 Omega pistons with coated skirts.
Aiming for ~8.5:1CR.
Shown side by side with stock RoW S1 piston
_________________ 1979 UK 932 |
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WEASEL149
Joined: 19 Aug 2005 Posts: 595 Location: UK, Sheffield
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Posted: Sun Mar 17, 2013 11:53 am Post subject: |
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peterld wrote: | WOW!!!! |
Yeah I know, you can't contain your excitement _________________ 1979 UK 932 |
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peterld
Joined: 10 Dec 2006 Posts: 947 Location: Noosa Heads QLD Australia
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Posted: Sun Mar 17, 2013 1:53 pm Post subject: |
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And I love weapons-grade hardware!! _________________ 80/81 932/8 ROW |
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Carrera RSR
Joined: 08 Jan 2010 Posts: 2309 Location: Somerset, UK
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Posted: Sun Mar 17, 2013 8:09 pm Post subject: |
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_________________ 1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252 |
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morghen
Joined: 21 Jan 2005 Posts: 8884 Location: Romania
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Posted: Sun Mar 17, 2013 8:54 pm Post subject: |
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love that car !
keep going ! _________________ https://www.the924.com |
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