Compression difference between turbo and NA

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Compression difference between turbo and NA #664457 11/09/05 01:55 AM

Joined: Oct 2005

Posts: 38

Michigan,USA

Tdamigo

Getting the Wheeling Fever

Does anyone now how they lowered the compression between the turbo and NA 223?

92 amigo w/C223T

Re: Compression difference between turbo and NA [Re: Tdamigo] #664458 11/09/05 04:11 AM

Joined: Feb 2005

Posts: 101

Dougal

Wheeler

The bigger engines have different pistons for the NA and turbo versions.
I'd expect the same in the C223.

Re: Compression difference between turbo and NA [Re: Tdamigo] #664459 11/09/05 07:05 AM

Joined: Dec 2003

Posts: 121

Calif

Paul223

Wheeler

Tdamigo--

My '86 Isuzu P'up manual shows the compression ratio to be the same for both the C223 and the C223T at 21:1.

Paul

Re: Compression difference between turbo and NA [Re: Paul223] #664460 11/09/05 06:01 PM

Anonymous

Unregistered

As stated above, the compression is supposed to be the same between the two engines. One difference between the 2 is that the C223T has a thicker oil control ring(I think it's the oil). When we rebuilt my dad's '86 the pistons in it were for a NA and the machine shop had to put them on the lathe to get the thicker ring to fit.

Re: Compression difference between turbo and NA [Re: Tdamigo] #664461 11/10/05 12:04 AM

Joined: Sep 2003

Posts: 1,214

JLEMOND

Body Damage is Cool

COMP RATIO FOR BOTH ENGS IS THE SAME , THE PISTONS ARE DIF, IN THE RING AREA AND THE WRIST PIN FOR THE TURBO IS IS A GOOD BIT LARGER , LATE 86 PISTONS, THEY CHANGED THE RING DESIGN AND THE RINGS WERE NOT INTERCHANGABLE BETWEEN THE TWO, THE REAR OF THE RING LAND WAS TAPERED ON THE LATER ONE AND SQUARE ON THE EARLY ONES AND THE RODS WERE MUCH BIGGER ON THE TURBO ENG EVEN ON THE EARLY ENGS , THE LATE RODS ARE MASSIVE COMPARED TO THEM JERRY.

Re: Compression difference between turbo and NA [Re: JLEMOND] #664462 11/12/05 03:33 AM

Joined: Oct 2005

Posts: 38

Michigan,USA

Tdamigo

Getting the Wheeling Fever

Thanks,I have had both apart and noticed that the top face of the pistons are very simailer and so was the clearance at the block at the top of the stroke.Been waiting to here if I can get my oversized piston and rings(Not sounding good)

92 amigo w/C223T

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