3.0 16V engine mods, etc

Talk and Tech about turbocharged 924/944/968 cars
Bergerac
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My OS Giken LSD has just arrived, @Thom which oil have you been running? Any issues with it being noisy at low speed?

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Thom
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Motul gear competition 75W140. Never heard any LSD chatter but not surprising with a car driven by a straight line racer.
'90 944 turbo

#202

Bergerac
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Thanks, I was thinking Swepco 210 but its good to have feed back from someone with the same diff

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944m3
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My NA tranny whined loudly. Sounded like a truck downshifting on the highway. Thought I needed to replace it. Put in Swepco 201 and whining went away.

To be fair, I have no idea what the previous owner had in there or if it was still running 30yr old fluids from factory.

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333pg333
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Sorry I've been on the road a lot over the last few weeks and haven't checked in on forums. In the last 3 weeks I've been to Tokyo, UK, Paris, Biarritz, San Sebastian, Bilbao, UK, Tokyo, Melbourne and finally back home to Sydney today. I'm getting too old for this!

Thanks to Thom and Tom and Blueline for the kind words. It does feel quite a while since we've been at it now that you mention it. Sort of carbon dated via forums back to 2006 when I first joined Rennlist. However unlike Thom who has built a number of fine engines to go in his fine car, I'm merely a schmuck who opens his wallet. Not that it doesn't mean there's no research and organising but I've not wrenched on these cars so much as many others.

Indeed, it reaffirmed the way to go forward is with the 16v motor if you can make it work within budgets. I'd really be surprised if too many cars could match Thom's on the road...especially 100-200kph. Might be worth comparing just out of curiosity.

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Bergerac
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Does anyone have an upgraded intercooler in their collection that they want to move on? Preferably something that fits in the nose like the SFR 1.5, I really don't have an appetite for cutting the bumper support. Theres a pretty good chance Im going to hit the limit of stock intercooler so Id prefer to just get my piping made once

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Thom
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@333pg333
Well Patrick, thanks for the kind words again but I have only "built" two engines for my supposedly "fine" car and that was each time together with a like-minded enthusiast, and each time there have been teething issues down the line that took some time to fix. At least the results are there thankfully. I think I need to drive the car more as I have been bored with it lately and the other toys you saw when you visited provide far more thrills these days, if only to mention the sound department... getting old and superficial really sucks.

@Bergerac
There is always the option of using a stock-ish unit in the stock location and plumbing in parallel another core down low ahead of the A/C condenser and rad, like ETG in Germany does. It seems to work well, at least as a temporary heat sink, as flanking a thick core to the rear of the front bumper without any ducting is far from ideal, IMO.
Last edited by Thom on Sun Nov 10, 2024 4:19 am, edited 1 time in total.
'90 944 turbo

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333pg333
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Well perhaps it's time to get one / all of these cars onto a racetrack Thom. At least the 944. That one you can afford to take a few risks. The others, perhaps not. The track can become addictive but also presents a slippery slope as you find you want to improve the car under those conditions. Enter at your own risk!

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Thom
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It seems that the car is punishing me for saying I was bored with it as the clutch is now consistently slipping under full load. Since I cannot really believe that the larger turbine housing has allowed the engine to reach the 650 ft.lbs rating of the KEP2 pressure plate, what is the rating of the 930 clutch disc? Is a pressure plate supposed to get softer with the years? I have used the KEP2 for 15 years and 145,000 km but the pedal has never seemed to get any softer.
'90 944 turbo

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nick_968
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Thom, as you have the 968 gearbox, could you not switch to the 968 bell housing, then allowing you to take your pick of the 964/ 993 clutches including the turbo version?

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