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New engine


Diseazd

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Is that measured flush? What HG are going to run?

[ATTACH=CONFIG]64440[/ATTACH][ATTACH=CONFIG]64439[/ATTACH][ATTACH=CONFIG]64441[/ATTACH]

Installed the .040 over ITM pistons. Torqued the main and connecting rod caps. Looking good. BTW Madkaw...the pistons are flush with deck.

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My L29 engine builder had to mill the 0.030 over pistons a little off the top for his own peace of mind I believe. Otherwise he told me I needed a 2-3mm head gasket. I'd have to ask him exactly why. How often do builders keep pistons flush?

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It's not about keeping the pistons flush- it's about setting up proper head to piston clearance based on the head gasket used. Thru research I have read that the best set up is .022-.027 clearance , but that might be too tight for some comfort levels. It's all about ideal parameters to fight detonation.

I'm running about .027

Most stock Nissan L motors have a pistons above the block from .014- .019

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  • 2 months later...

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Went to work on the Z Doctor P79 head today. I geometried all the wipe patterns for the Isky Stage III cam and valve springs. All rockers centered out with .160 lash pads except 2 which were .150's. I use an old egg carton to keep everything in order. Hope to start reassembly soon.

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  • 3 weeks later...

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