Ok, heres my predicament...
I have a b18a block that I just took in to get machine work done on, and when they checked the cylinders, he said that it needs to be bored out quite a bit... My crank is perfect he said...
I originally wanted to keep STD bore with my block, just to be stronger..

I have a set of eagle rods for a b18 block..

So heres my question, should I rip apart a b17 block I have kickin around, that has a spun bearing... and use my b18a crank and rods in IT,

OR..... Bore my b18 block out to correct those bad cylinder walls?


Modified by Topdawgg at 1:19 PM 1/4/2006

 

Bore it out, fill the block, and reap the rewards

 

Get the b18 sleeved.


if you use your b17 block w/ an LS crank/rods, wouldnt you need a deckplate?(correct me if im wrong)...

 

im not gonna be sleeving...

and i dont know if i need anything to run the LS crank/rods.. thats why im askin

 

the b17 block is liek the b16a block its a little shorter,unlike the b18 blocks....so no you just cant throw everything in from the ls

 

so my only option is to find another b18 block, or bore this one out

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Topdawgg &raquo;</TD></TR><TR><TD CLASS="quote">so my only option is to find another b18 block, or bore this one out</TD></TR></TABLE>

Yes. Don't get hung up on wanting standard bore so bad, Evans has made 600+ WHP on 81.5mm blocks, so I think you'll be fine.

 

just thought with stock sleeves, i would wanna go as close to stock bore as possible

 

bump... still lookin for more feedback

 

you can go 81.5 no probs. i did because my block was sitting outside for about a year and had rust in the cyls. a little maching and its all good now

 

i was plannin on runnin about 12-14 psi...
will it be fine with the bored out block

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Topdawgg &raquo;</TD></TR><TR><TD CLASS="quote">i was plannin on runnin about 12-14 psi...
will it be fine with the bored out block</TD></TR></TABLE>

More than fine. I wouldn't ever run a STD bore on a block unless it was brand new from Honda. It is better to have a little thinner sleeves and a true straight bore than thick sleeves with an oval effect going on.

Buy some 81.5mm pistons bring them to the machine shop and have them bore out each cylinder to each matching piston. You won't regret the extra effort.

 

[QUOTE=asubennett]

More than fine. I wouldn't ever run a STD bore on a block unless it was brand new from Honda. It is better to have a little thinner sleeves and a true straight bore than thick sleeves with an oval effect going on.
QUOTE]

EXACTLY...you will be fine with such a slight overbore

 

ok guys... thanks alot.. i talked to my machinist, and he said that .5mm over the stock would get rid of the 2 bad cylinders..

so it looks like im gonna order a set of 81.5mm Pistons...


now the hard part... WHAT KIND? haha

 

CP, wiseco, you cant really go wrong

 

lookin for a set of wiseco as we speak.... thanks for all the help guys

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Topdawgg &raquo;</TD></TR><TR><TD CLASS="quote">lookin for a set of wiseco as we speak.... thanks for all the help guys</TD></TR></TABLE>

No Problem. Happy Building!

 

im pumped.. .this should be a good build

 

wiseco's right here. 1500 miles no complaints.