what kinda rod and main bearings are u guys runnin on ur race motors?..oem or acl or other?
thanks

 

clevite 777

 

oe

 

ACL

 

OE Rod and ACL main. Never changed the mains all season and the looked great after 70 plus hard passes.

 

ACL in everything. Never had it plastigauge wrong.

 

ONLY OEM.

 

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

 

We run ACL's new "H" series race bearings coated by calico. Holding up perfectly!!

 

Someone posted this a long time ago, I though it was interesting reading...
http://www.g-speed.com/pbh/ae-...aring

 

Interesting reading as to what Honda was trying to accomplish 10-15 years ago. Makes you realize how old some of our "current" technology is

 

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

Word...

 

I've got a great book about Honda's Turbo F1 program, you'd be amazed at the technology they had in the mid to late 80's!

 

ACL

 

OEM only. When you do the measurements on different rods, you can never be too sure to put in the RIGHT size to get all the same clearances that you want.

You can't assume that X rods and Y rods and A Rods will all have the same exact precise machining process. Add the crank factor and then the block factor. There's just too many chances of one of those being off.

 

we even use OEM GSR bearings in certain D16a6 builds.

 

Can anyone tell me what exact clearance you are looking for when building a motor with Honda colors? The Helms manual gives you such a large operating variance that any color bearing you put in there will be in the acceptable range.
In most cases, I think people just use the colors so they won't have to measure anything.

 

Have you ever encountered certain rods that have uneven sizes.
Have you received cranks from customers that after being measured, you have to use colors from both ends of the spectrum.
What do you do then?

I don't think its not having to measure anything. I think its a matter of being precise.

 

thanks for the input

 

As to rods, I would never use a set of rods that all 4 do not match.
But my real point is that no one can say what is the exact clearance Honda says is correct.
Is it .0013", .0015", .0017" or .00XX? If you say that only a color bearing gives you proper clearance, how do you take into account that these clearances were established for 6500 rpm engines making 150 hp back in the mid 1990's?

 

whats the difference between ACL and OEM?

 

They are both a trimetal designed bearing unlike the standard bi-metals

 

so what clearances do you guys like to use on a high hp application, especially those without oil squirters?

 

What like 1000hp .002 - .0025 . Fedrel Mogul bearings

 

These companies who you guys are talking about have listings for Honda motor or you have to mock them up.Let me know I am interrested in this knowledge.I use Honda bearings in my motor.