well im gonna build my h23 and i was gonna have GE sleeve it.. i plan on running about 17psi daily and maybe more at the track.. my question is how big of bore can/should i go.. .02? or bigger? also what about oil pumps.. i hear some bad things about prodrive...

 

i still use my stock oil pump. As far as bore size, most pistons for our applications are 20 over. Im currently 40 over at 88mm (stock is 47mm). The darton sleeves i use can safely go to an 89mm. I would just use a regular 20 over since those are shelf pistons and not customs.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GudeH23a &raquo;</TD></TR><TR><TD CLASS="quote">Im currently 40 over at 88mm (stock is 47mm)</TD></TR></TABLE>

wow, vince is getting good if he can overbore 41mm

 

yeh ill get 87.5mm or 88mm to be safe. What comp you want to go with

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by GudeH23a &raquo;</TD></TR><TR><TD CLASS="quote"> Im currently 40 over at 88mm (stock is 47mm).</TD></TR></TABLE>

Man, is there any cylinder material left?! LOL!

I would stick with 88 at the most. 89 is getting really thin...and you'll need as much stability you can get when boosting. Trust me, 15psi+ on an H23 will make plenty of torque...you probably won't gain any discplacement advantage by going to an 89mm bore. This is a daily driven car, right? Keep it simple and reliable.

 

Im sorry to mention im using Darton sleeves that Benson's supplied me with for my 88mm h23a bore.

 

im thinkin 9:1... do they make like a 9:2:1 or something.. that way less boost and same power...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BoostedH23a1 &raquo;</TD></TR><TR><TD CLASS="quote">im thinkin 9:1... do they make like a 9:2:1 or something.. that way less boost and same power...</TD></TR></TABLE>

hows that if your dropping it from stock
stock is 9.8:1

thats why am running 10.2:1comp see the tq am making at that low psi

 

damn, DLB1994, that is some tq you got there. What is your fuel management like? Do you get paranoid at all about detonation at that c/r with 12psi daily?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by symba &raquo;</TD></TR><TR><TD CLASS="quote">damn, DLB1994, that is some tq you got there. What is your fuel management like? Do you get paranoid at all about detonation at that c/r with 12psi daily?</TD></TR></TABLE>

running hondata with 756cc injectors and 3bar map 255intank pump

naw i have not got any detonation yet

 

im comparing that to 9:1 pistons... also should i get dome or flats or what

 

I would go with flats to prevent hot spots...but that's just my .02

 

i have a sleeved h23 87mm block for sale 400 bux please someone take it off my hands!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ludesleep &raquo;</TD></TR><TR><TD CLASS="quote">i have a sleeved h23 87mm block for sale 400 bux please someone take it off my hands! </TD></TR></TABLE>

what kind of sleeves, where are u located..... and what condition is the block in?? email me...... VERY VERY INTERESTED

 

i have pics of the block now if anyone wants to see it

 

thanks KTeller8

here ya go


Modified by ludesleep at 5:57 AM 4/23/2003


Modified by ludesleep at 5:57 AM 4/23/2003