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Thread: Long Rod VE Engine build

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Posts: 11-20 of 70
2011-09-23 18:42:41
#11
I dont know anyone here but cometic offers a 88.5mm gasket that fits the VE and also you could take a VET gasket and take it to a machine shop and tell them to open the bore hole I dont know about cosworth gasket??
Something like this will work http://cgi.ebay.com/ebaymotors/Cometic-Head-Gasket-88-5mm-Nissan-240SX-SR20DE-SR20DET-/380365773453?pt=Motors_Car_Truck_Parts_Accessories&hash=item588f911a8d
Last edited by Payu on 2011-09-23 at 18-46-24.
2011-09-23 18:48:23
#12
90mm PE gasket or 87mm cometic will seal.
2011-09-23 20:21:43
#13
bore out the VET gasket to 88, charles had did a few to 90mm
2011-09-23 20:30:16
#14
at that point just stay 1mm over.

our headgaskets are really finacky at higher stress levels.

stratton.
2011-09-24 03:43:32
#15
crazy dope. Those pistons truly are a work of art.
2011-09-27 16:58:59
#16
I had problems with cylinder wall failure with turbo engines at 87mm. Do you think 88 na is going to be safe?
2011-09-27 17:03:42
#17
If things are to be believed around here, 90mm for N/A is safe, and 92mm is sometimes done without issues. ⌐_⌐
Last edited by BenFenner on 2011-09-27 at 17-07-04. Reason: racecar
2011-09-27 17:18:51
#18
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?


There are and have been 88mm turbo cars running for quite sometime.

Wall failure at 87mm? Thats a first. I hate and try not to run aftermarket forged pistons at stock 86mm bore. In my opinion 86.5-87mm for big power(turbo) and 88mm on NA is more than safe when done correctly.
2011-09-27 17:20:51
#19
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. ⌐_⌐


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.
2011-09-27 17:41:21
#20
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.
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