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anyone here increase their bore and not stroke? 1.9/2.0?

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VW1990CORRADO

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Discussion starter · #1 ·
i would like to get bigger pistons to increase bore, but not replace crank and increase stroke. i want to keep it revving like a 1.8t, but add a lil torque, and mainly turbo spool with the larger displacement.
can anyone point me in the right direction. i allready got 20mm WP scat rods waiting. and i was thinking about some wisecos. just not sure which bore. or if going 1.9 is worth it, and same with 2.0
as well as cylinder wall strength after boring.
thanks.
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#2 ·
Re: anyone here increase their bore and not stroke? 1.9/2.0? (VW1990CORRADO)

i had 82mm, and going to 83mm on my new build
 
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#5 ·
Re: (VW1990CORRADO)

Quote, originally posted by VW1990CORRADO »
what displacement will stock crank/scats, and 83mm pistons make me?

A little under 1.9 liters. I'm running Scat rods with 83mm JE Pistons and stock crank. I had everything balanced by the machine shop that bored out the block. Haven't had any problems yet. However, I only have about 3000 miles on the car. Took the head off a few days ago and everything still look flawless.
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#7 ·
Re: (VW1990CORRADO)

Quote, originally posted by VW1990CORRADO »
any noticable gains with em? spool? power?

Low-end drivability is much smoother. Can't really tell you if there were any major gains in spool or anything as when I rebuilt the motor I also went with a bigger turbo. However, it had no problem spooling up my GT35R .82 to 30 psi by 4800ish RPMs, untuned.
 
#9 ·
Quote, originally posted by VW1990CORRADO »
what displacement will stock crank/scats, and 83mm pistons make me?

83mm pistons with a stock crank of 87.2mm will give you 1888.67ccm... not really a 2.0L in my book 2000ccm and up
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if you want to run some numbers I made a Spread sheet that dose all the work all you do is plug piston size and crank size and number of cylinders. You only use the first 4 numbers in the whole motor volume colum.
http://converter.dubohio.com
 
#10 ·
Re: (VW1990CORRADO)

Quote, originally posted by VW1990CORRADO »
what management? and INJS?

Stock management right now, but I'm considering having BmFTechnik tune my car soon. Running 630cc injectors, but I need to go bigger; something like 750cc high impedance injectors.
 
#11 ·
Re: (Chris164935)

i'll sell you my 750's if you want,
 
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#15 ·
Re: (18JettaPower)

cause there are no forged 92.8's that fit new style blocks.
 
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#17 ·
Re: (18JettaPower)

Quote, originally posted by 18JettaPower »
I know a few people doing 400whp+ on 92.8mm crank in a 1.8t block and on only 22.5psi on pump gas. Are your number goals higher then that?

what 1.8T block is it?
Quote, originally posted by O2VW1.8T »
cause there are no forged 92.8's that fit new style blocks.
 
Discussion starter · #18 ·
Re: (18JettaPower)

Quote, originally posted by 18JettaPower »
I know a few people doing 400whp+ on 92.8mm crank in a 1.8t block and on only 22.5psi on pump gas. Are your number goals higher then that?

i am sure they are on his.
 
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