Why do P29 Pistons make for higher CR in a d16a6 when they have the dame bore/stroke...
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From: S.F., CA, USA
Why do P29 Pistons make for higher CR in a d16a6 when they have the same bore/stroke...
I am confused as to why people put p29 pistons out of a d16a3 into d16a6's to boost their cr. Both engines have the same bore and stroke--75x90. Is the d16a6 head shorter?
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From: NB, Canada
Re: Why do P29 Pistons make for higher CR in a d16a6 when they have the same bore/stroke... (gurippu
It's soley to do with the dome or dish of the piston
Edit - not a d series guy, so the heads may have different combustion chamber volumes as well.
Edit - not a d series guy, so the heads may have different combustion chamber volumes as well.
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From: Winnetka, Calif, USA
Re: Why do P29 Pistons make for higher CR in a d16a6 when they have the same bore/stroke... (gurippu
It could also be due to the placement of the pin in the piston.
If you had two different pistons, both with flat top's, the placement (height) of the pin could make a difference.
Wes
If you had two different pistons, both with flat top's, the placement (height) of the pin could make a difference.
Wes
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From: S.F., CA, USA
Re: (Bense)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bense »</TD></TR><TR><TD CLASS="quote">the dohc p29 combustion chamber is much larger than a d16a6 combustion chamber. </TD></TR></TABLE>
Ah, this makes sense. Thanks.
Ah, this makes sense. Thanks.
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From: Fredericksburg, VA, USA
Re: (Bense)
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Bense »</TD></TR><TR><TD CLASS="quote">the dohc p29 combustion chamber is much larger than a d16a6 combustion chamber.
</TD></TR></TABLE>
And the P29 dome is much bigger than the PM3 (?) dome.
Here are mine.
BTW, this engine is for sale.
https://honda-tech.com/zerothread?id=1750498
</TD></TR></TABLE>
And the P29 dome is much bigger than the PM3 (?) dome.
Here are mine.
BTW, this engine is for sale.
https://honda-tech.com/zerothread?id=1750498
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