Iris and Kevin

delete

hacker-pschorr

SWEET!!!!


I love seeing 16V's supercharged - the sleeper shark.

Jean-Louis

Soon we will have another 84 Euro supercharged with a 5.5l engine in it (10psi boost to start)..............more to come.
This is what will happen on the track.....

AO

That's great guys! Love to see other cars getting boosted!

SMTCapeCod

What, at about 6 psi? I suppose with the injection you might be able to push a *little* higher. Just don't blow 'em up, people!

OB=Sleeper-- NOT! S4 is the fatboy!

Normy

-Callaway used to sell turbo kits for four-cylinder Volkswagens, and in order to lower the compression ratio, they supplied a copper plate. This spacer plate fit between a pair of head gaskets, raising the head slightly and essentially lowering the compression ratio enough to allow 11 pounds of boost.

Power? The engine went from 105 hp to 180 hp with this system. Hello!

Now, the engines in S2's have 10.4-1 compression, which generally precludes forced induction. However, with a spacer plate such as this...you could basically do what you want. Yes, the heads would be slightly farther apart if this was done on a V8 engine, but the only place I could see this being a problem at all on the 2-valve engine is at the water bridge, where you'd just need a pair of spacers to make it fit.

Why hasn't anyone tried to make spacer plates to lower compression on these engines?

N!

SharkSkin

Normy, the passenger side cam would be mis-timed by 3x the spacer thickness. Might be able to compensate with PorKen's adjustable cam gear setup -- might not.

JEC_31

Do not underestimate the ill effects on quench control (and 928 timing...) that the "thicker head gasket" method has. It's an old-fashioned ham-fisted method that while effective, has drawbacks.

IMO, it is better to use precise and accurate control of air, fuel, spark and timing to prevent tradegies in the firing chambers.

Here's some good reading on the subject:

http://kb-silvolite.com/article.php?action=read&A_id=39

http://kb-silvolite.com/article.php?action=read&A_id=34

http://kb-silvolite.com/article.php?action=read&A_id=36

I can't wait to see some dyno sheets posted... an SC'd Euro has got to be a screamer!

Brett928S2

Hi

Any pics please ??

I considered it for mine before I went to Nitrous...

All the best Brett

PORSCHE 928 S2 AUTO V8 4.7 LTR 1986 IRIS METALLIC BLUE WITH X-PIPES ,RMB ,PROMAX CHIPS, KICKDOWN SWITCH.K&N.NITROUS KIT 150 HP.
PCGB UK 928 FORUM MODERATOR - Email managingdirector@pchealthcare.co.uk

Carl Fausett

Kevin really had to push thru some issues with his grey-market Euro to get this to work right, and although we provided the information, he was "head wrench" on this project.

All the things that need to be done when you take a 928 out of storage after 5 years and put it back into daily use had to be addressed. It was quite a project.

I want to thank him for his willingness to share what he did and how he did it with us - all owners who install to the 16v LH Euro fuel system will have an easier time as a result of it.

Pics of the install will be coming soon. I mailed Kevin a digital camera and he is taking the pics and mailing it back to me.

Good job Kevin! Send me the receipt for the Dyno and I'll pay for it.

Jean-Louis

This is the picture of the Euro supercharged before the accident.
5 psi of boost, 354 rwhp, 2680 lbs, The next one will be better.....

BeerFish

Droooool!!!

Normy

Hmm. It even has me thinking a little bit. I'm still wary about the compression on these engines.

N!

Iris and Kevin

Thanks very much, Carl, for your kind words above, and also for being so generous with your time on so many weekend and evening phone calls, during all these long weeks of frustration. It was a very interesting and challenging project from beginning to end. It was also very rewarding to discover that it IS possible to supercharge this high compression motor and have it purr like a kitten, as if nothing had ever been changed...except, of course, for a lot more horsepower!

I'll get those dyno numbers and pics for you all just as soon as a backordered rear end gasket gets here from Germany, hopefully by next weekend.

Thanks for all your interest and encouragement!


Kevin
1984 Euro Auto
SUPERCHARGED

FlyingDog

Who denied that they could not be supercharged? Several have been. I've just heard that they tend not to last long. Good luck with engine life. I'm looking forward to the dyno numbers.