11-21-2012, 06:38 AM
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#1 (permalink)
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A True Z Fanatic
Join Date: Oct 2009
Location: Canada
Posts: 1,156
Drives: 370z
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Quote:
Originally Posted by Boost_lee
Any pics of the block with the HR pistons installed?
Do the HR pistons have a shorter piston height? (hard to tell from the pics but it kinda looks that way)
If so, what do you think the overall CR would be?
nice work btw  |
when I took the picture both piston were hold by the same wrist pin.
the top base of the piston looked to be the same height.
I would say the CR should remain pretty much the same as the VHR engine...
the VHR piston are more flat with 2 valve relief
the HR piston have a bit of a dome with 4 valve relief
my guesstimate would be 10.8:1
unless a known engine builder correct me on this !
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