Porsche Enthusiasts Club Forum

Over the weekend, I have cleaned under the bonnet, touch up any paintwork and then sat the engine. I've got one or two alterations to make, but nothing to tricky.

Traction control and LSD ? .

Yes LSD and a fast acting right foot

You swine! That looks the mutts nuts!

I'm actually contemplating selling my S because I don't have the skills to build this..... On a serious note, what would you imagine it would cost a bloke who rocks up at your door for and engine build like this? I love my Porsche but I need real power back and the lack of tuning options on these cars is leaving me a little wanting!

But seriously this is great!

[quote="Duncan"]You swine! That looks the mutts nuts

I'm actually contemplating selling my S because I don't have the skills to build this..... On a serious note, what would you imagine it would cost a bloke who rocks up at your door for and engine build like this? I love my Porsche but I need real power back and the lack of tuning options on these cars is leaving me a little wanting

But seriously this is great![/quote)

Thanks Duncan. I'm very pleased with the way its turning out. I've still got quite a bit to do yet to get it up and running. When its finished and I'm pleased with results, come and try it and then ask me the question again. I will say, its not been easy and not cheap.

ooooooooh....! That is looking so fine! Well done Tim, nice attention to detail as well as solid engineering skills!

[quote="turbotim3"



The inlet manifold we made ourselves using the S2 runners and a cast plenium from a Toyota Supra upgrade setup. The throttle housing is a Mitsubishi upgrade and as a 75mm butterfly and built in idle speed control.
I used the standard S2 exhaust headers and married these up to a turbo crossover pipe. For the dyno I cut the end off this and welded on a T3 flange, so as we could try various turbo's.


The inlet looks a little plain in the pictures, but when it comes off the dyno I intend to have it crackle blacked.
[/quote]

Hi tim. Nice looking build. I've seen these plenum type intakes on other builds and was curious as to at what point they become beneficial to performance. For example is at only above say 400 hp at high rpm? I have a spare s2 intake and was wondering if it would provide a benefit to my supercharged s2 setup.

Cheers

Eric

I have now got the intercooler made and installed. It as a 100mm/4inch bar and plate core, I have a 63mm inlet on the left hand bottom corner and a 70mm outlet on the right hand top corner. I've just got the connection pipes to make.

Its all coming along nicely, I'm also waiting for my flywheel and clutch to be made and I should then soon have her up and running.

Some pictures of intercooler.

A short update, things have been going a little slowly. I am still awaiting my flywheel which I have been told should be finish this week. While I've been waiting I have made the exhaust system, a couple of pictures to show what I have done

I don't understand, but then I don't know much exhausts and turbos and stuff: you seem to have many more pipes than I was expecting to see. Very neat work regardless of whether I know what it does!

This is fantastic, great work.

It's coming along , what was the thinking in fitting those flex joints there, I'd have thought the crossover pipe would have seen more heat/expansion ?

The exhaust exits the offside of the head and the turbo is on the nearside with an external wastegate, so you have a downpipe to the wastegate which then continues to the turbo. The exhaust exits the turbo and comes down the car and is met by the outlet from the wastegate which joins 1/3rd of the way down the car.

A better design would see an 'up-pipe' to the turbo and a downpipe taking the exhaust back down the car, and if the turbo had an integrated wastegate then that would be it.

I haven't really put them in for expansion but more for movement Paul. I have used V band clamps from front to back and they make everything very rigged and I don't want the exhaust to break.

I'm interested in the thinking for the middle boxes Tim, are they just for silencing or do they affect response. A lot of tuners state that bigger is better but my experience with my Cosworth years ago and with my Turbo recently is that big straight through exhausts delayed spool. I also like Porsche's method of tying in the wastegate discharge well downstream when the gas has cooled and contracted.