Thread: Long Rod VE Engine build

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2011-09-27 17:42:47

#21

MR-4Door-SR20DET Online/offline status of MR-4Door-SR20DET is unknown

Weekend Warrior

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Cometic H1796SP9040S Metal Head Gasket SR20DET 88.0mm x .040"

Cometic Head Gasket 88.5mm Nissan 240SX SR20DE SR20DET on eBay!

^88mm HG options?

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Originally Posted by SR20GTi-R

NA is a thinking man's game, alot of people dont have the stomach to play NA.

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2011-09-27 17:44:53

#22

STRATTON

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Originally Posted by rallyser

Some of the European rally cars (Sunny/Pulsar and Almera Kit Cars) in the late 90's ran 88mm bores with 82mm strokes for 1995cc engines. Some of those guys may know or have access to NME parts or know who makes them. NME claimed 265hp with 12:1 compression at 8750 rpm! I don't know much else about the engines, but those are the FIA sanctioned rules, so I trust them. Also, this was not with VVL engines, but I figured the point about 88mm bores was relevant.

your right.

i posted on the old forum years ago about asking about a 88mm build, this was a long time ago and well really nothing got answered. my question stemmed from reading about the btcc cars irrc that ran 88mm bores.

jaime, what do the 88mm bores you know of running for headgaskets. i know your brother and now one guy in your camp has decided to go 88mm, so what have you guys come up with ?

stratton.

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if ruled the world and everything in it, skys the limit id push the q 4 5 infinit....

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2011-09-27 17:45:41

#23

STRATTON

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Originally Posted by MR-4Door-SR20DET

Cometic H1796SP9040S Metal Head Gasket SR20DET 88.0mm x .040"

Cometic Head Gasket 88.5mm Nissan 240SX SR20DE SR20DET on eBay!

^88mm HG options?

well there we go. i spoke to soon. good find.

stratton.

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if ruled the world and everything in it, skys the limit id push the q 4 5 infinit....

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2011-09-27 18:02:43

#24

SR20GTi-R

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Originally Posted by STRATTON

this is true.

ive seen it, a 90mm 660whp vet, something failed but it wasnt the sleeve, the block was still good and may be being used for all i know.

ive seen it, 90mm 280whp na ve, ran some wicked times, was taken apart to port the head, still sits on a engine stand to this day.

ive seen it, my 92mm block, something failed but it wasnt the sleeves them selves.

ive seen it, jaimes 92mm block, fazils 92mm block and rocco's 92mm block.

ive read about it, corys 92mm block has held together for many low 11 passes.

everythings doable to a point. apparently we all have better luck then others.

as far as 88mm goes, as good as it sounds, we dont have a head gasket that seals it correctly. by correctly i mean we have 87 or a 90, niether of those are 88mm. we dont have a 87mm h/g that will seal a 88mm bore. with the 90mm for those who have seen them doesnt leave much to seal and i personally wouldnt want to run a head gasket that can seal a 92mm bore on a 88mm bore. as far as machining out a 87mm gasket to 88mm well that depends on how much you trust your machinest. as we all know its always hit or miss with machinests and shops etc. its always best to do it your self or not to do it at all. those who havent learned that, will in due time.

a 87mm ve with a high compression pistons such a 12:5:1 or 13:1 and lightned crank some nice cams and some headwork is a 230 whp set up on a dynodynamics all day. add in kojimas long rod design and youll hold power alot longer and slow down piston speeds. very important to road racing, drag racing and all togther longevity.

end rant.

stratton.

The PE/Mazworx gasket we are all using on these 92mm builds are intended for a 90mm bore. It just has enough to seal a 2mm larger bore.

The 87mm cometic VE gasket as is and even the VET gasket punched out to 88mm will seal.

Originally Posted by MR-4Door-SR20DET

Cometic H1796SP9040S Metal Head Gasket SR20DET 88.0mm x .040"

Cometic Head Gasket 88.5mm Nissan 240SX SR20DE SR20DET on eBay!

^88mm HG options?

These gaskets do not have the VVL oil hole.

Originally Posted by STRATTON

Cometic can make the gasket.

For one build we are using the VET gasket bored to 88mm and the other will use the Cometic 0.9 VVL 87mm gasket.

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Tired..of the bullshit.

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2011-09-27 18:07:41

#25

STRATTON

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this is all good information ^. should be stickied.

stratton.

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if ruled the world and everything in it, skys the limit id push the q 4 5 infinit....

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2011-09-27 19:11:33

#26

SR20GTi-R

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Originally Posted by BenFenner

If things are to be believed around here, 90mm for N/A is safe, and 92mm is sometimes done without issues. ⌐_⌐

The problems with the 92mm builds had nothing to do with bore size. In all cases it was all bottom end related.

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Tired..of the bullshit.

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2011-09-27 19:50:29

#27

jRod

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Originally Posted by STRATTON

well there we go. i spoke to soon. good find.

stratton.

I was gonna say LOL I knew for a fact that Cometic had 88mm HG off the shelf...

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2011-09-27 19:53:11

#28

SE-Rican

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Originally Posted by choaderboy2

I had problems with cylinder wall failure with turbo engines at 87mm. Do you think 88 na is going to be safe?

Every turbo motor we have build including mine have been 87mm. First time I hear about anyone having cylinder issues.

I am also using the Cometic VE 87mm HG

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SR20Deep
1992 Turbo SE-R

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2011-09-27 20:04:28

#29

MR-4Door-SR20DET Online/offline status of MR-4Door-SR20DET is unknown

Weekend Warrior

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Originally Posted by jRod

I was gonna say LOL I knew for a fact that Cometic had 88mm HG off the shelf...

^Looks like they just have them for the DE, but not VE as Jamie pointed out. Hopefully they can make them for both.

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Originally Posted by SR20GTi-R

NA is a thinking man's game, alot of people dont have the stomach to play NA.

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2011-09-27 20:15:33

#30

cory

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I love the do vet gasket. I wonder how far we can machine them. I'd much rather use a machined vet gasket to 92 km. Since you can reuse them so many times without issue. Unlike some of these other gaskets : (

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2.0 218/153- 12.9@106
2.3 270/190- 11.6@116
2.4 285/210- 11.5@118
Retired...

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