Whats Parts To I Need To Get Gti 6 To 2.2l

[craig_12345 0]

Im building a gti 6 turbo engine, but wanting to make it 2.2L i will be geting 88mm Forge pistons, what crank will i need and from what car. also will i need to get custom made rods to fit the long stroke on a new crank

[Galifrey 1]

Im building a gti 6 turbo engine, but wanting to make it 2.2L i will be geting 88mm Forge pistons, what crank will i need and from what car. also will i need to get custom made rods to fit the long stroke on a new crank

 

I would say use the search, but I saved you the trouble

 

http://forum.205gtidrivers.com/index.php?showtopic=74000

[DrSarty 90 1 Cars]

Yep there's lots of info in my project on the block, crank and FORGED (not forge) pistons required to get 2.2L from an XU10 block.

 

88mm is starting to push the overbore limits IMO, as you'll see in the first few pages of the link Mark gave you. I have 87mm with a 92mm 406 2.1TD crank, which gives 2187cc. So if you have 88mm bore you'll end up with 2239cc.

 

I'm no turbo expert, but you will have to carefully specify your rod and piston set up (remember this will set you back £600-£800 on its own) because you'll need to get the compression ratio right. My forged pistons (only slightly modified) mated to S16 rods give me 11.6:1, which even a non-turbo guru like me knows is way too high. Saab 2.3 16v turbos run at 9.5:1 by the way.

 

A tiny word of warning is that GTI6 heads have thin stemmed/weak valves which means valve heads have been known to break off.

 

But I do wish you luck. It will be expensive, but if you get it right it will be a f*cking belter.

[petert 591]

Why bother if you're going to turbo it? Just make it 16psi instead of 15psi! I'd just clean up the bore with new forged turbo pistons at 86.50mm and either buy a T16 crank, or nitride an XU10J4 (or RS) crank. I also agree with Rich, than the XU10J4 head is probably a more robust choice in terms of valve stem diameter. Unless of course you already have the GTi6. Also, don't forget you'll need an ML type gearbox (T16, V6 & Turbo PSA cars). No BE is ever going to live to tell the tale.

Edited October 26, 2009 by petert

[taylorspug 7]

Agree with Peter regarding why bother with extra capacity. Its just not worth it on a boosted engine. Also the block thickness between the bores will be extremely marginal on 88mm bore, which obviously isnt ideal on any application, boosted or NA.

[craig_12345 0]

are they 86mm bore standard, would u get steel rods to go with pistons if im looking after over 300bhp

[DrSarty 90 1 Cars]

are they 86mm bore standard, would u get steel rods to go with pistons if im looking after over 300bhp

 

Have you gone and done any research? Even Wikipedia can tell you the bore and stroke of the engines, including the XU10JRS!

 

Please try doing some reading first. You've had some good advice here already.

 

And why are you looking for over 300bhp? What's the reason? What do you want this car for? Have you contemplated gearbox and driveshaft issues?

 

Please go do some reading; there are heaps of topics to learn from on here.

Edited October 26, 2009 by DrSarty

[Saveit 0]

Agree with Sarty. Go do some research yourself. It will uncover a lot more for you to read and learn other than the specific answers you will get here.

 

That is also the reason my first reply was as short as it was as i expected you would go do some research hereafter.

 

When you have done some research come and ask the questions that you cant find an answer to, and we will be happy to help

Edited October 26, 2009 by Saveit

[Batfink 201]

people have been getting over 300bhp on standard bores with superchargers

[B1ack_Mi16 67]

people have been getting over 300bhp on standard bores with superchargers

 

I'm sure a standard GTi6 block with just a thick headgasket will handle 350-400bhp without any problems.

 

Cometic sells MLS gaskets up to 3mm if I remember correct and that will probably lower the compression enough.

 

However a proper 2.0 16v turbo engine should be running closer to 500bhp than 400 if you ask me, and new proper rods and pistons might be a piece of mind

 

I'm building a 2.2 one myself with 87mm bore 92mm stroke for the 405 T16 I've just got myself.

 

More cubes gives earlier spool-up and might be very useful when going with big turbos..

[welshpug 1,662]

Those Lynx gti6 supercharger conversions run at around the 400+ mark with their stock superchargers unrestricted, standard block and forged pistons and rods.

 

the Low boost restricted version of the same Supercharger kit runs at circa 250 bhp on a totally standard engine, boost levels are fairly low even on the 400 bhp version, Rich Walker the originator of the Lynx/Rotrex kit has taken his past the 500 mark with a larger compressor unit, he runs his engine with ARP studs rather than bolts.

[Sandy 191]

A very well known bespoke 4 cylinder race engine, uses regular XU Iron block head bolts rather than studs!

[B1ack_Mi16 67]

A very well known bespoke 4 cylinder race engine, uses regular XU Iron block head bolts rather than studs!

 

It's understandable that for example the Audi/VW guys tuning the 1.8 T engine need studs as the headbolts in these engines are only (afaik) 10mm diameter.

 

The XU10 bolts are 12mm and will give a lot of clamping force compared to a 10mm at the same level of bolt stress.

 

So I can't really see a point either on the XU10.

[Sandy 191]

We're quite lucky with these engines really, theres a heap on advantages they have over others for building serious engines.

[CaptainK 11]

We're quite lucky with these engines really, theres a heap on advantages they have over others for building serious engines.

Talking of GTi6 engines.... get back to mapping mine. :(

[Sandy 191]

Lunch!

[CaptainK 11]

Lunch!

Thanks mate.