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 Post subject: V8 924?
PostPosted: Mon Aug 22, 2016 8:25 am 
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Joined: Wed Mar 11, 2015 12:00 pm
Posts: 603
Location: Markinch, Fife
Model: 924S
Went to a small car show in Lochgelly yesterday, saw this strange beast. Thought it was a CGT at first, but under the the hood sits a V8.
Anyone seen this car before? The owner was nowhere to be found, so no idea what the story behind it is.


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 Post subject: Re: V8 924?
PostPosted: Mon Aug 22, 2016 8:26 am 
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Joined: Tue Sep 30, 2008 12:24 pm
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Location: Lancashire
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Yes, it used to be in the club, think his name had V8 in it IIRC.

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 Post subject: Re: V8 924?
PostPosted: Mon Aug 22, 2016 8:55 am 
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Joined: Sat Jan 30, 2010 11:13 pm
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Location: Somerset
Model: TheOnly Way Is Turbo
Newly acquired by Prophead. Not sure if he has made it here yet. Has posted on TIPEC and 924board asking questions and posting updates of work done

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1981 924 Carrera GT/S rep race car - Speed Yellow Too much to do, to little time and money!
1979 924 Turbo Series 1 - Alpine White & Guards Red 10yrs owned and counting
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 Post subject: Re: V8 924?
PostPosted: Mon Aug 22, 2016 10:02 am 
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Joined: Mon Sep 16, 2013 12:13 am
Posts: 992
Location: Kingston upon thames
Model: 924S
There's quite a few more interested in doing the V8 conversion on 944's
Mostly for track day cars that are often felt to be underpowered when on track.

The cost of a new crate engine is pretty reasonable and long term costs are lower than the 2.5

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924S 1987 Guards Red,
968 engine, 968 Brakes, Gaz Gold, 16" Cup 1's, RHD Wipers, Flush screen,
Custom leather interior, RS Door Cards, Momo Prototipo, JMG Remap, Race Shift

Cayenne S 4.5 2006
924S 1987 Alpine White Sold
928 S2 1986 Sold
993 C4 1997 Sold
986 3.2 2001 Sold
986 2.7 2000 Sold


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 Post subject: Re: V8 924?
PostPosted: Fri Sep 30, 2016 7:30 pm 
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Joined: Mon May 18, 2015 7:53 pm
Posts: 2295
Location: Bournville - Land of Chocolate
Model: 924S
I'm surprised there aren't more V8 conversions in the UK.
I know they're popular in the States. I'd be uber happy with one

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1985 924S Historic Road Rally / Hillclimb Car


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 Post subject: Re: V8 924?
PostPosted: Sat Oct 01, 2016 8:32 am 
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Joined: Fri Sep 16, 2016 8:57 am
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Model: 924 GT8
Hi, that's is my car. You were very privileged to get sight of it, that day was the last time it was on the road. Had a clutch issue on the way from that show to Knockhill. I am now in full project mode with the car.


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 Post subject: Re: V8 924?
PostPosted: Sat Oct 01, 2016 8:53 am 
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Joined: Mon May 18, 2015 7:53 pm
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Location: Bournville - Land of Chocolate
Model: 924S
Do you know much about the Rover conversion Prophead?
Such as is it mated to 924 or 944 transmission?
Are adaptor plates available etc?

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1985 924S Historic Road Rally / Hillclimb Car


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 Post subject: Re: V8 924?
PostPosted: Sat Oct 01, 2016 9:29 am 
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Location: Guildford, Surrey
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https://porsche924.co.uk/forum/viewtopi ... =6&t=26889

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 Post subject: Re: V8 924?
PostPosted: Sat Oct 01, 2016 9:51 am 
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Joined: Fri Sep 16, 2016 8:57 am
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Model: 924 GT8
Nige wrote:
Do you know much about the Rover conversion Prophead?
Such as is it mated to 924 or 944 transmission?
Are adaptor plates available etc?

Hi,
I didnt do the conversion, but am in the process of re-doing quite a bit of it and funnily enough have recently removed the entire driveline, plus have done quite a bit of research. So, here is what I know.

This was originally a standard 2.0 car 5 speed manual (Audi box). This has 20mm torque tube shaft and trans input shaft and that was what was in the car when I bought it. More in this in a bit. It is also using the cable operated clutch mechanism.

The conversion components came from a compnay called UVA (Unique Vehicle Association) that was around in the 80's doing some pretty wacky stuff. They created a custom cast alloy bellhousing to mate the 924 / 944 torque tube to the RV8 engine, along with engine mounts, exhaust headers and probably some other stuff. The engine fits pretty well in the bay but some stuff needs relocated such as the brake booster. The headlights have been converted to fixed GT style ones, this may also have been to create space by getting rid of the headlight motor and mechanism. The end result is plenty of space around the engine which is nice. The engine with carb setup is taller than the bonnet hence the hood scoop (the air filter sits right inside it).

Engine Cooling
1. seems to be custom radiator which uses RV8 SD1 hoses, pretty sure a 944 turbo / S2 / 968 rad would work.
2. Bonnet really needs to be vented as these engines generate significantly more heat.
3. I'm running Evans Power Cool in this

Fuel System
1. much simpler as is low pressure to carb, this engine using Edelbrock (Weber) 4 barrel 500cfm carb
2. Appropriate fuel pump and some fuel line routing changes, no need for return line.

Driveline
This is what I am currently redoing. I will be putting in 944 torque tube and transaxle for the bigger diameter shafts this will provide some future proofing for power upgrades and allows the use of the Rv8 friction plate as the shaft and splines are the same. But i will be stuck with the cable clutch release.

If I where considering this from scratch I would start with a 924S because of the driveline components. I would also try to go down the EFi route rather than carb conversion on the V8. Also, the physical size of the larger capacity later model RV8 is the same as the 3.5ltr, so go straight for one of the bigger capacity units.

Having said all that, and I do love the noise and torque and in period modification, if I were considering an engine swap from scratch I would go down the Audi / VW 1.8T 20v or 2.0 TFSI route as its a much more modern engine with a lot of specialist and tuners out there to tap into.

If you want V8 and lots of power and torque go the US route with LS motor for the same reasons.


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 Post subject: Re: V8 924?
PostPosted: Sat Oct 01, 2016 10:53 am 
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Joined: Mon May 18, 2015 7:53 pm
Posts: 2295
Location: Bournville - Land of Chocolate
Model: 924S
Many thanks for the reply Prophead

Since asking the questions I've been doing some research and came across the UVA bellhousing conversion - I remember UVA well from the late 80s / early 90s but wasn't aware they did this conversion

I also came across some YouTube track footage which I think is your car - sounds great (I love a V8 soundtrack)


And thanks for the link to the other thread Roo

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1985 924S Historic Road Rally / Hillclimb Car


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