Is it really neccessary port the combustion chambers?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Junglesnake &raquo;</TD></TR><TR><TD CLASS="quote">Is it really neccessary port the combustion chambers? </TD></TR></TABLE>

NOPE!! I made 616whp with a bone stock head with just valvesprings and retainers in it. 84mm Sleeved block sir. You will be fine

 

Anyone else?

 

im fine here and making like 650.

 

Wasnt' making that much power but ran a stock head mated to a 84.5mm block and ran fine.

 

Great guys, I am trying to keep this setup as simple as humanly possible and still make around 550 - 600 hp

 

porting will give you that power at a lower boost pressure but its been proven that the stock head will make that power.

 

I have been 84mm on a couple motors with the same b16 head. No problems whatsoever. Right now I am running 84.5mm with a b16 head and stock combustion chambers.

 

im running a 84mm bore and a 81mm B16 head..........no problems.........

 

Glad there is gonna be a couple of high hp hondas running around memphis.

 

wouldnt it raise compression?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by elinetics &raquo;</TD></TR><TR><TD CLASS="quote">wouldnt it raise compression? </TD></TR></TABLE>

not if you go with low comp pistons for whatever bore size your going with.

 

if u want to make the most power u can ands u have the cash for then do it sum guys r making 400 hp on 20+ boost pressure but if u build the head alittle . u could be making that aT 15 pounds of boost instead of 20+. also less stress on motor

 

501 whp 84mm stock gsr head

 

85mm with stock head, I only made 340whp on 8-9psi, will be turning the boost up this week. shooting for 450-500 if lucky.

 

84.5mm here

 

I have an 84mm GSR with a completely stock GSR head. Jeff Evans tuned it for me and its making 555hp right now.

 

What about the other way around? Smaller bore on the block than on the head.
Just had to ask and break up this thread a bit. (no I don't have this problem...yet).

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 808 DB8 &raquo;</TD></TR><TR><TD CLASS="quote">I have an 84mm GSR with a completely stock GSR head. Jeff Evans tuned it for me and its making 555hp right now. </TD></TR></TABLE>

That is exactly what I am shooting for. By completely stock, I assume you mean stock springs and retainers? Do you have a dyno, as I would like to see your power band? Also, what turbo are you running?

Thanks

 

Yes, completely stock. I plan to put in my Ferrea springs and retainers though, as I am taking it up to 8500. I do have a dyno chart, but its not too clear. Im hoping Jeff will post it soon. My turbo is a Full Race T3/T67 H.O. The car did make 605 though it was too lean for Jeffs liking. So it was turned down to 555.