Well since a P8R is opened up 84 mm and my block is 81mm(CTR pistons) will this head even work.

If it does, isn't this going to lower my compression because the chamber is a lot bigger 84mm? Will the gasket over lay in the combustion camber between the head and block. I know i can cut it but...

someone help??


A little info on head if you dont know.

Thanks Teg92:

"This is a super rare head casting of a B20 head. Want to make good nonvtec power? Ports are different than regular LS heads, chambers are already opened up to 84mm, and intake valves are 33mm (vtec size). This head out of the box will flow as well as most ported LS heads, and you port this thing and get custom valves like another h-t member (fastone beast LS motor) you can easily be destroying vtec setups because of its 33mm intake valves seats."

 

up

 

this may lower your compression, but not drastically,
what is the cc volume on the head?

it sounds like a pretty decent option when used with an 84mm+ bottom end.
i would be worried about using a head with larger valves, that is intended for a larger bore piston.
i doubt those valves would be easy to replace (source) if you made contact.
good luck

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by thad &raquo;</TD></TR><TR><TD CLASS="quote">this may lower your compression, but not drastically,
what is the cc volume on the head?

it sounds like a pretty decent option when used with an 84mm+ bottom end.
i would be worried about using a head with larger valves, that is intended for a larger bore piston.
i doubt those valves would be easy to replace (source) if you made contact.
good luck</TD></TR></TABLE>


Yeah thats what I have been hearing. They might not sit in the pocket of the Standard Ctr pistons. I'm definately going to clay the motor, to much money into it.

I think it might be good because that compression might be too high for Cali 91 ocatne gas on my LS head.

will find out.

 

up

 

But don't forget that the PCT pistons were designed to work with 33mm intake valves fromt the factory. I would have to say the chamber is going to be bigger but you can't actually calculate your compression without knowing the volume of the chamber. You might actually lower the compression enough with the 84mm chamber and those PCTs to run Cali 91. One possability would be to have the chamber quench areas rewelded and rehaped but thats kind of alot of money. As far as valves IF you needed them I'd contact ENDYN I'll bet they could make you a set of valves for that head.

 

Where do you get this P8R head? My B20 needs it!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by StorminMatt &raquo;</TD></TR><TR><TD CLASS="quote">Where do you get this P8R head? My B20 needs it!</TD></TR></TABLE>


Put a WTB at in the classified, Some one will hit you up with one.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TOR &raquo;</TD></TR><TR><TD CLASS="quote">But don't forget that the PCT pistons were designed to work with 33mm intake valves fromt the factory. I would have to say the chamber is going to be bigger but you can't actually calculate your compression without knowing the volume of the chamber. You might actually lower the compression enough with the 84mm chamber and those PCTs to run Cali 91. One possability would be to have the chamber quench areas rewelded and rehaped but thats kind of alot of money. As far as valves IF you needed them I'd contact ENDYN I'll bet they could make you a set of valves for that head.</TD></TR></TABLE>


Your right the PCT piston where made for the vtec head, kind of missed that, ahh

I'm going to clay it with the stock ones. but if it hits i will go aftermarket, just have to see?

Will the head match up with the block, though. 84mm head and 81mm block. Wont the head combustion chamber be slightly over the cylinder bore, You know what i mean?

 

Personally, No I would not put this head onto a 1.8 bottom end. But I know what this head is and means so If you can figure out a way to make it work, more power to you.

 

anyone else

 

isn't p8r the parts code for a TL or CL?
i know a lot of CL parts have p8r in the part number.
kinda like sk7 is 90-93 teg and st7 is 94-up teg. etc.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Evs-One &raquo;</TD></TR><TR><TD CLASS="quote">isn't p8r the parts code for a TL or CL?
i know a lot of CL parts have p8r in the part number.
kinda like sk7 is 90-93 teg and st7 is 94-up teg. etc.</TD></TR></TABLE>

Thats funny I could have swore out of all the LS's I have had 90-93 had PR4 stamped on everything and P75 stamped on the 94+. Also my old B16 had P30 on everything and the other PR3

 

stamp code on a lot of engine parts are different than body parts. basically, pr4 is LS, p72 or p30 is vtec.
sk7 is 90-93 integra body style, and 94+ is st7.
look @ any of the other parts aside from motor.
like throttle cable, brake pads, interior pieces.. they all match according to body code.
p8r is a 3.2TL.. i am almost positive.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Mike K &raquo;</TD></TR><TR><TD CLASS="quote">stamp code on a lot of engine parts are different than body parts. basically, pr4 is LS, p72 or p30 is vtec.
sk7 is 90-93 integra body style, and 94+ is st7.
look @ any of the other parts aside from motor.
like throttle cable, brake pads, interior pieces.. they all match according to body code.
p8r is a 3.2TL.. i am almost positive.</TD></TR></TABLE>

oh ok! Yeah my hatch has SR3 all over everything

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Evs-One &raquo;</TD></TR><TR><TD CLASS="quote">isn't p8r the parts code for a TL or CL?
</TD></TR></TABLE>

The P8R designation may be used for other models in the Honda lineup...but in this case the P8R head is a head code for a B-series cylinder head.

 

and what model vehicle does this p8r head come on?

 

Well since it was only distributed in Japan on certain B20's its hard to say. Nobody really knows which Honda's received the B20 engines w/ the P8R head. Some people say that some of the jdm CRVs or the Orthias, but I've never seen anyone who can say w/ certainty or provide proof as to which models received them.