86mm flattop pistons

[izzo]

anyone got some? looking for 4....

 

 

lemmy know a ratsun price

[izzo]

bump

[hang_510]

new cast piston should fit a ratsun budget.

[izzo]

**edit

 

 

Looking for these for a friend. I don't know what brand/where to get them. Any help would be awesome :D I did some searching on google but didnt really see anything.

Edited November 13, 2009 by h2theizzo

[datzenmike]

There were two made in 86mm size for the stock z and zx. One was almost 11cc dish and the other was a flattop. Both have the same pin height as the 4 cyl. L series motors.

[Skib]

I got a heads up , got my eye out ;)

[izzo]

Good lookin out, thanks skib.

 

 

Thanks for that info Mike! :D

[DISLEXICDIME]

finde a z20 to steel them from

[datzenmike]

Z20s are the same bore (85mm) as the L20Bs, however the piston pin heights are different anyway.

[DISLEXICDIME]

oops my bad

[freaky510]

sr has a 86mm but not sure about pin height.and I wonder if their would be a combo that would work

[freaky510]

wow I never realized they where that hard to come bye :confused::confused::(

[izzo]

oh i know right no responses yet lol

[banzai510(hainz)]

I never really could find a set beside from nissan @ 50$ apc or from steward wilkison in austrailia has a listing.

 

flattop is too high comp in a l20. Ok in L18.

 

spend the money on cam and head porting closed champer head.

 

go to junk yard and pull them out of a 280zx non turbo

[izzo]

I never really could find a set beside from nissan @ 50$ apc or from steward wilkison in austrailia has a listing.

 

flattop is too high comp in a l20. Ok in L18.

 

spend the money on cam and head porting closed champer head.

 

go to junk yard and pull them out of a 280zx non turbo

 

 

 

Thank you Hainz,

 

can you verify what years they came in?

[freaky510]

 

flattop is too high comp in a l20. Ok in L18.

 

 

what??? to high for a L20 now iam really confused

 

 

Thank you Hainz,

 

can you verify what years they came in?

 

L28 (late)------------ 38.1mm /0.0cc Flatop in '81-'83 ZX / 86mm bore

[banzai510(hainz)]

Freaky

stock L20 pistons were 11.35 cc if remeber right. so by putting a Zero dish piston in there is going to put comp up to 11 to 1 or very close to it.11cc of volume removed is ALOT!!!!!!!!

Most gas stations are 91octane around here. If running race or avgas then fine otherwise your looking for proplems and esp on a open chambered head as they detonate EZer than a closed chamber head.for a daily driven car is not practicle

L20s has that extra stroke and notice its a taller block. All the Z car blocks have the same height L24-L28. so the variations on rod/crank lenght isnt all that much until the later l20 and Z series blocks came out.

 

 

81-83 non turbo are flattops 86mm is STD size on these motors

81-83 Turbo are 10.9cc

 

this is all from memory unless soembody else has the info

Edited November 17, 2009 by banzai510(hainz)

[Skib]

oh i know right no responses yet lol

 

I use PM's ;)

 

and as far as JY hunting goes, all 75-83 280Z/ZX will have 86mm pistons just double check the blocks are L28.

[izzo]

I use PM's ;)

 

and as far as JY hunting goes, all 75-83 280Z/ZX will have 86mm pistons just double check the blocks are L28.

 

word, thanks skibby!!!

[banzai510(hainz)]

I cant confirm that the 75-80 are flattops

I know for sure that the 81-83 non turbo are flattops

 

all else fail order these 86mm flattops

12010-P8612

enter in nissanparts.cc

then begin your world of detonation pain

[Skib]

Im gonna be asking around with the Z guys and see what I can find

[freaky510]

found a set going to pick them up this afternoon thanks for all your help:)

[freaky510]

:(well the guy didnt have 86mm they where 85.5:mad: so I am on the hunt again i would like to find a set of 86mm pistons to stuff in my motor any leads would be great.

 

Skib could you ask around again please :eek::(

 

also i have read some where i could use sr20 pistons on z20 rods is this true??

 

any help would be great!!!

[freaky510]

:(well the guy didnt have 86mm they where 85.5:mad: so I am on the hunt again i would like to find a set of 86mm pistons to stuff in my motor any leads would be great.

 

Skib could you ask around again please :eek::(

 

also i have read some where i could use sr20 pistons on z20 rods is this true??

 

any help would be great!!!

 

any one have info ???

[datzenmike]

Only that the Z20 had two different rod sizes 152.5mm and another with the dished piston that is almost 4mm shorter. If someone has the SR piston pin height I can work it out.