A.k.a.: Pete S
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Mad fabricator, paint and body
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posted on June 24th, 2015 at 07:18 PM
Specific measurments of 90.5mm cylinders
I am looking at a set of 1776 cylinders and pistons. I understand they come in thin walled 'slip in' and thick walled that require fly cutting of
the heads and case.
I want the thick walled version. If I look at this set, I know the internal size needs to be 90.5mm, and I have a digital caliper to measure this.
What I want to know is how to check if they are thin or thick walled by the outside measurement of the cylinder wall. I am assuming there is a
substantial difference, and I will be able to check with my caliper easily.
Also if I am checking the pistons, which will be 90.5mm diameter obviously, how do I check if they are for standard crank stroke? is there different
gudgen pin heights depending on what stroke, or is it just a rod length?
Being 1776 I am pretty sure they will be 90.5 thick wall with stock stroke, but I am trying to see if there is a basic measurement to make sure they
are what they are meant to be. However the seller cannot be sure at this stage.
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posted on June 24th, 2015 at 11:54 PM
AIAA slip in are only available in 87mm/1641cc and 88mm/1679cc, 90.5mm/1776cc are machine in, 92mm/1835cc are slip in for 90.5 machined register last
Mahle set were case 96mm head 98mm
