75.5 mm Vitaras, what piston to wall clearance?
08-28-2007, 05:41 PM
#1
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75.5 mm Vitaras, what piston to wall clearance?
I'm going to pick up a used Z6 block and run some 75.5mm Vitaras after the block is properly bored. After a lot of reading I see that the guys who run a STD bore Vitara in a STD bore Z6 have up to .030" piston to wall clearance which is way out of Honda specs, and slaps like ---- when cold, but seems to work ok when warmed up.
I want to have the correct clearance which is under .020" by Honda standards, but what should it be? I don't want the piston to seize up from expansion after it's warmed up, but I also don't want to run the same shitty clearance that most other people do with STD bore Vitaras. Anybody know what the ideal clearance would be with 75.5mm Vitaras in a Z6?
I want to have the correct clearance which is under .020" by Honda standards, but what should it be? I don't want the piston to seize up from expansion after it's warmed up, but I also don't want to run the same shitty clearance that most other people do with STD bore Vitaras. Anybody know what the ideal clearance would be with 75.5mm Vitaras in a Z6?
08-28-2007, 11:17 PM
#3
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Join Date: Nov 2005
Posts: 1,876
Re: 75.5 mm Vitaras, what piston to wall clearance?
Originally Posted by jagojon3
I'm going to pick up a used Z6 block and run some 75.5mm Vitaras after the block is properly bored. After a lot of reading I see that the guys who run a STD bore Vitara in a STD bore Z6 have up to .030" piston to wall clearance which is way out of Honda specs, and slaps like ---- when cold, but seems to work ok when warmed up.
I want to have the correct clearance which is under .020" by Honda standards, but what should it be? I don't want the piston to seize up from expansion after it's warmed up, but I also don't want to run the same shitty clearance that most other people do with STD bore Vitaras. Anybody know what the ideal clearance would be with 75.5mm Vitaras in a Z6?
I want to have the correct clearance which is under .020" by Honda standards, but what should it be? I don't want the piston to seize up from expansion after it's warmed up, but I also don't want to run the same shitty clearance that most other people do with STD bore Vitaras. Anybody know what the ideal clearance would be with 75.5mm Vitaras in a Z6?
08-29-2007, 01:53 AM
#8
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Join Date: Mar 2004
Posts: 1,729
Re: 75.5 mm Vitaras, what piston to wall clearance?
No one has run with that much clearance that I have read about. I think the current H-T record is running 0.016 and he's got the most clearance out of everyone. If I had pulled out my stock pistons and dropped in 75.5mm Vitara's, I still would have had 0.006 piston to wall clearance, which is excessive.
08-29-2007, 10:35 AM
#10
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Join Date: Jan 2006
Location: Mother Fucking Washingtion
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Re: 75.5 mm Vitaras, what piston to wall clearance?
I know that when you do small block fords you want about.007 it would expand more than a honda due to the fact that they are larger. I have no Idea what to run the vitaras at since they are hypertectonic.
