Just curious...anyone ever used a GS-R B18C1 head on a B18C5 Block?

 

why?

but yes....have done it before....in a gsr block with ctr pistons and with itr pistons and with p20 pistons

also put a gsr head on a b16 block

 

Yes...many have.

 

but why?

 

Local shop owner I know has a C5 block with a P72 GS-R head on it. He's big into Turbo, he claims the P72 GS-R head flows better than the ITR head?

 

Stock GS-R should not flow better than ITR. It may have been massaged tho.

Perhaps the GS-R head has a different roof profile, thus being better for boost (less compression / hot spots / detonation).

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ill &raquo;</TD></TR><TR><TD CLASS="quote">

Perhaps the GS-R head has a different roof profile, thus being better for boost (less compression / hot spots / detonation).</TD></TR></TABLE>

I know the cc is smaller than a R head.

 

The P72 has raised ports for a more direct shot into the cylinder. P72 heads have a quench area that goes all the way to the surface, while PR3 heads are recessed.

The P72 may flow better than a B16 head (maybe the R too?) but with those ports I would assume reversion is a bigger issue than with PR3 heads.

 

I saw this at my buddies shop yesterday. I was confused when i saw a block badge that said B18C5 but no red valve cover and i noticed the head was a Gsr head. I dont know WHY anyone would do that but hey some people are morons

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CBRF4i &raquo;</TD></TR><TR><TD CLASS="quote"> but hey some people are morons</TD></TR></TABLE>


thats an ignorant statement

I'm building an engine right now, with a C5 shortblock and GSR head
so I guess you would consider me to be a moron

 

Uh Oh! I smell an arguement....

Aloha,
Brandon

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by CBRF4i &raquo;</TD></TR><TR><TD CLASS="quote">I saw this at my buddies shop yesterday. I was confused when i saw a block badge that said B18C5 but no red valve cover and i noticed the head was a Gsr head. I dont know WHY anyone would do that but hey some people are morons</TD></TR></TABLE>

Hey CBRF4i, you should judge a head by its valve cover, thats all it is. its only a valve cover, quite honestly, if someone gave me an offer i couldn't refuse than i'd sell my red valve cover and put a black one on.
-&gt; taht would mean if they ever popped the hood and saw a black valve cover they'd think its a b16 if they din't look at the block. they'll think its a salvaged R but no R motor was installed, since gsr has the different IM on them.

 

Higher compression perhaps? There was actually a post a while back of a guy who purchased an ITR, who later found out the head was a GSR head. Needless to say, he wasnt exactly happy.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dan GSR &raquo;</TD></TR><TR><TD CLASS="quote">

so I guess you would consider me to be a moron
</TD></TR></TABLE>

Dan, you know I reserve this line for that one person....

 

I think it's funny that most of the posts in here don't even know what they're talking about.

Anyone remember that N/A engine shootout? Take a look at what they heads they all chose to use. Then search...and found out why.