First off I would just like to make it clear that 92-97 h22 mains are 50mm and 98-01 are 55mm. Im not sure if anyone had tried this but say I had a built block from 97 that spun a main bearing and also have a good block from 01, would I be able to use the caps and crank from the 01 if I line bored the 97 block's mains to 55mm? Do the dowel pins line up? If not would it be possible to get good 92-97 main caps and bore them to 55mm and use the 01 crank or would too much material be taken off for it to work properly?

 

id like to know this too.

 

up

 

well insteresting that your doing this.. i have 2 h23 blocks with spun main bearings.. i bought a 99 h22 crank and i am going to have the mains of the h23 block bored out to 55mm, now im not sure if it has been done, but when i was looking i think there was enough room, but nobody will be sure until its tried.

the way to think about it is: is there enough room on both sides of the main to take out 2.5mm of material, now i haven't really checked, but i know honda mains are fairly beefy and im prett sure that you can bore it out to 55mm, atleast thats what im plaining to do.

 

I was going to try this but since I already have a good H22 and H23 swap....the spare H23 block with spun bearing will just sit in my basement just in case I ever need it. The idea sounds like the way you do it, but I have yet to see, or hear anyone do it.

I think the best thing to try is getting oversized ACL bearings and get a 92-96 H22 or H23 crank and be done with it.

It just isn't worth my time or money to try. I am pretty much done modding PWD cars anyway.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by prelittlelude &raquo;</TD></TR><TR><TD CLASS="quote">well insteresting that your doing this.. i have 2 h23 blocks with spun main bearings.. i bought a 99 h22 crank and i am going to have the mains of the h23 block bored out to 55mm, now im not sure if it has been done, but when i was looking i think there was enough room, but nobody will be sure until its tried.

the way to think about it is: is there enough room on both sides of the main to take out 2.5mm of material, now i haven't really checked, but i know honda mains are fairly beefy and im prett sure that you can bore it out to 55mm, atleast thats what im plaining to do.</TD></TR></TABLE>

Yeah in theroy it should work, I was wondering if anyone has actually tried it.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AndyD &raquo;</TD></TR><TR><TD CLASS="quote">
I think the best thing to try is getting oversized ACL bearings and get a 92-96 H22 or H23 crank and be done with it.
</TD></TR></TABLE>

they are oversized on the inside diamiter for reground cranks.

 

Ask Satan... I think he is running a similar setup. He said the bigger journals are better.

 

Yeah I've tried to tell as many people as possible about the 98+ being 55mm.

Anyways I put the caps side by side and they are indeed the same height so theoretically you could line bore the 97 and try to make it work. I was going to do that to my wrecked h23VTEC block but there was a ton of heat damage so we were worried about it all working out and just went straight h22a4 instead.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by satan_srv &raquo;</TD></TR><TR><TD CLASS="quote">Yeah I've tried to tell as many people as possible about the 98+ being 55mm.

Anyways I put the caps side by side and they are indeed the same height so theoretically you could line bore the 97 and try to make it work. I was going to do that to my wrecked h23VTEC block but there was a ton of heat damage so we were worried about it all working out and just went straight h22a4 instead.</TD></TR></TABLE>

yeah after i settle down with the f22/vtec boosted project, im going to find a shop local to me that i can trust to machine the mains for me, i will just go right to the honda factory specs for the h22a4 98+ and then buy some oem honda bearings.

 

What ae the advantages of larger mains with thicker bearings?
Higher revving capabilities?

 

Well i would guess that it would be less likely to spin with more surface area for oil and safer/cooler/more reliable.