D16Y8 with wiseco 75.5mm pistons..what clearance for wall to piston?
05-16-2006, 08:24 AM
#1
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D16Y8 with wiseco 75.5mm pistons..what clearance for wall to piston?
the specs on the wiseco sheet saids .025 but shouldnt i be .030 wall to piston clearance because of turbo and expansion of the pistons due to heat? searched but only came up with ring gaps no piston to wall clearance. any help would be great. thank.
05-16-2006, 08:52 AM
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Re: D16Y8 with wiseco 75.5mm pistons..what clearance for wall to piston? (MRturbo)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MRturbo »</TD></TR><TR><TD CLASS="quote">the specs on the wiseco sheet saids .025 but shouldnt i be .030 wall to piston clearance because of turbo and expansion of the pistons due to heat? searched but only came up with ring gaps no piston to wall clearance. any help would be great. thank.</TD></TR></TABLE>
The spec sheet didn't give seperate specs for forced induction and naturally aspirated?
The spec sheet didn't give seperate specs for forced induction and naturally aspirated?
05-16-2006, 09:27 AM
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Re: D16Y8 with wiseco 75.5mm pistons..what clearance for wall to piston? (RyanCivic2000)
.003" is the general rule of thumb. 
05-16-2006, 11:05 AM
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Re: D16Y8 with wiseco 75.5mm pistons..what clearance for wall to piston? (RyanCivic2000)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RyanCivic2000 »</TD></TR><TR><TD CLASS="quote">
The spec sheet didn't give seperate specs for forced induction and naturally aspirated?</TD></TR></TABLE>
nope only say "Suggested Piston to wall .025"
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostincoupe »</TD></TR><TR><TD CLASS="quote">.003" is the general rule of thumb. </TD></TR></TABLE>
that's is what i thought too. thanks.
The spec sheet didn't give seperate specs for forced induction and naturally aspirated?</TD></TR></TABLE>
nope only say "Suggested Piston to wall .025"
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by boostincoupe »</TD></TR><TR><TD CLASS="quote">.003" is the general rule of thumb. </TD></TR></TABLE>
that's is what i thought too. thanks.
05-16-2006, 01:35 PM
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Re: (oscarmayer)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by oscarmayer »</TD></TR><TR><TD CLASS="quote">follow the suggested specs. the looser you run the more of a chance blowby happens.</TD></TR></TABLE>
Run them too tight and you'll have scarring on the cylinder walls. A little blow-by is perfectly fine.
I would call the manufacturer and tell them the type of application the pistons are being used in.
Run them too tight and you'll have scarring on the cylinder walls. A little blow-by is perfectly fine.
I would call the manufacturer and tell them the type of application the pistons are being used in.
05-17-2006, 02:43 PM
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<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">"The spec sheet didn't give seperate specs for forced induction and naturally aspirated?"
nope only say "Suggested Piston to wall .025"
</TD></TR></TABLE>
If the sheet says that clearance then i woudl tend to think the manufacturer already compensated for this. There ARE reasons they recommend clearances and settings.
nope only say "Suggested Piston to wall .025"
</TD></TR></TABLE>
If the sheet says that clearance then i woudl tend to think the manufacturer already compensated for this. There ARE reasons they recommend clearances and settings.
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05-17-2006, 03:08 PM
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Re: (quicksilver1689)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by quicksilver1689 »</TD></TR><TR><TD CLASS="quote">Yeah a little noise and blowby is better than scuffing
and scoring the cylinder walls. Whats the expansion rates of those pistons like?</TD></TR></TABLE>
no idea but i ran it .030
and scoring the cylinder walls. Whats the expansion rates of those pistons like?</TD></TR></TABLE>
no idea but i ran it .030
05-18-2006, 08:44 AM
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Re: (oscarmayer)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by oscarmayer »</TD></TR><TR><TD CLASS="quote">
If the sheet says that clearance then i woudl tend to think the manufacturer already compensated for this. There ARE reasons they recommend clearances and settings.
</TD></TR></TABLE>
So you think the same specs should be used for every application? Do you think those pistons are going to expand the same in a 300whp 15psi setup as a 600whp 30psi setup?
The spec sheet that came with my SRP's had a tolerance range based off the type of application they were going in. Not one set spec for every application. Again, I would contact the manufacturer.
If the sheet says that clearance then i woudl tend to think the manufacturer already compensated for this. There ARE reasons they recommend clearances and settings.
</TD></TR></TABLE>
So you think the same specs should be used for every application? Do you think those pistons are going to expand the same in a 300whp 15psi setup as a 600whp 30psi setup?
The spec sheet that came with my SRP's had a tolerance range based off the type of application they were going in. Not one set spec for every application. Again, I would contact the manufacturer.
05-19-2006, 05:18 AM
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Re: (RyanCivic2000)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote »</TD></TR><TR><TD CLASS="quote">I would contact the manufacturer.</TD></TR></TABLE>
Best idea yet!
Best idea yet!
05-19-2006, 07:11 AM
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Re: (oscarmayer)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by oscarmayer »</TD></TR><TR><TD CLASS="quote">
Best idea yet!
</TD></TR></TABLE>
Good thing I said it 3 days ago.
Best idea yet!
</TD></TR></TABLE>
Good thing I said it 3 days ago.
05-19-2006, 07:44 AM
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Re: (Unsivil_audio)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Unsivil_audio »</TD></TR><TR><TD CLASS="quote">running .030" on my wisecos (endyn's). Good stuff, sounds like stock.</TD></TR></TABLE>
You are def missing a zero. Thats 10 times the recommended clearance.
You are def missing a zero. Thats 10 times the recommended clearance.
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