Piston Search Help

[Capt Mark]

Ok here is my issue...

I bought a short block N42 built by Marc Sayer, performance engineering in 1999 that was wrapped and stored.

He put dished pistons in it, but I want to go with flat tops and bump up the compression. L2.8 - 1mm (040) over flat tops

To the point…

I am having a hard time finding flattops pistons 040 over.

Not looking for forged, Motor should be under 180 hp so cast is fine.

Does anyone know who sells them or could you please point me in the right direction?

This is my base specs "for now"……(going in a 70/240z)

• l2.8 N42 Block flat top pistons punch 1mm over

• E88 head w/ mild porting

• 1mm head gasket

• 270-80F cam grind III

• New timing set

• N36 intakes ported w/ early z balance tube

• 4 screw SU Therapy w/roller bearings, modified jetting, nozzles

• 3/2/1- 2.5” Header jet coated w/ new twin tip exhaust

• Lighten fly wheel

• new clutch, pp and t/o bearing

• HEI Points less distributor

• Turbo oil pump

Thanks for the help, I will take all I can get. Capt Mark

ps... I searched pretty hard all day

[Diseazd]

Capt Mark...Congratulations on a good choice. The E88 head with the L28 block and flat tops will be a good combo! I ran into the same problem a couple years ago when I built my last L28. Call Riley Curtis at Lynchburg Nissan in Lynchburg,Virginia he'll know if they are available. He got me a set for my last build.......an F54 block.....040 over flat tops and a shaved and shimmed P79 head. A good combination....comparable to what you're building. Guy

[Capt Mark]

Thanks Guy,

I will give him a call Monday.

I want to get this Motor running, no pun there...:-)

Capt Mark

[gryt57]

Okay guys, It is hard to tell in the pictures which is the front of the motor. I think the front of the motor in the first picture with the big red part of the block in the upper right of the picture is the front correct?

[Travel'n Man]

Call Dave Rebello at Rebello Racing - he can get a dish piston and machine it flat if needed.

[Montezuma]

I got Nissan pistons new in the box. I got several part numbers so please give the Nissan part number you want, I might be able to help you out.

[Capt Mark]

Thanks Mitchell, I sent an email to Dave, he has helped me out before.

Montezuma, I believe the Nisan part number is 12010-Y8606 (1mm over)

but not 100% sure, I think the 81-83 non-turbo had flat tops.

Thanks for your input, this is my first motor build. I have owned 3-240s and

never killed a motor, in-fact the motor that is in the car runs great but the

numbers do not match. Looking for more horses to drive on the weekends.

[Montezuma]

Let me check my stock I think I have that very set in my garage. I will check in a few minutes and get back to you. The Nissan parts come with just the piston, I do also have ring sets. I got all the stroker parts.

[Montezuma]

Ok piston check complete: I got what you want it is actually part number 12010-P7917 it is 81-83 NT 1MM OS. It is piston with pin. I also have 12010-P9012 and 12010-P8615. The rings are part 12033-P8370 or 12036-P8610.

[Capt Mark]

Montezuma, PM sent.