Suprdave

Anyone heard of this before? Rich @ RS told me that what he does because of the better quality rod bearings. Makes sense, but the gap on each side of the rod scares me...Anyone tried this before?

Suprdave

ninesecrx

Yeah, its common. GSR rods are of better quality from factory. ACL's however though are good quality in both varietys.

K20 EG

from what i know ..(b-series).the rod bearings and mains have the same designation in the part number pr3..of course with variables of the color designation....i know for awhile honda was offering a higher priced verson and a lower priced version ...i never got to the bottom of it ...the lower version was taken out of the system all together.

...some inside honda parts dept info

Suprdave

Your wrong actually...

All Honda Main Bearings are the same, but the Rod Bearings are seperated by:

PR4 (B18A\B\B20)
P72 (GSR\ITR)
P30 (B16\17A)

Suprdave

MackSpeed-616

..so using your logic you are saying the gsr and ls rod bearings are the same width?

MackSpeed-616

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Suprdave &raquo;</TD></TR><TR><TD CLASS="quote">
All Honda Main Bearings are the same</TD></TR></TABLE>

no

K20 EG

umm no ..

more like pr3 fit my b20 block ..im reffering to i.d not width by the way
put down the smoking shotgun

with the right color of course

TREVER

Gsr rod bearing are thinner(width) but are made out of better materials. I use ls rod bearing to 9500 every day no prob on my car. I have several friends using gsr bearings with modified ls rods with no problems either. Honda bearings kick *** either way so it's a coin toss. Then when you throw acl bearings in the mix my head starts to spin. Acl's are obviously proven also, but I prefer to size my bearings

K20 EG

that brings another question trevor

the acl bearings ....how do they specify clearance ...when you order them

is the same spectrum of clearances li o.e honda

MackSpeed-616

standard is just about a green. they have difference clearance tolerences then stock. so if they are out of spec youll have to line hone

Suprdave

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BustaNutt-616 &raquo;</TD></TR><TR><TD CLASS="quote">

no</TD></TR></TABLE>

There's a part # for Main Uppers and Main Lowers, and then different part #s for the different colors. Those bearings will work in any B-series Motor.

When I said All Honda, I meant in regards to B-series engines.

Suprdave

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RevhardEG &raquo;</TD></TR><TR><TD CLASS="quote">that brings another question trevor

the acl bearings ....how do they specify clearance ...when you order them

is the same spectrum of clearances li o.e honda</TD></TR></TABLE>

ACL's are sized to fall into the Green\Yellow range, giving you between .0015-17 of clearance. You can't 'size' them, like OEM.

Suprdave

MackSpeed-616

yeah i know this.. but that isnt what you said. there is a big difference in ALL HONDA and then B-motors.

...its all gravy, bro

TREVER

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by RevhardEG &raquo;</TD></TR><TR><TD CLASS="quote">that brings another question trevor

the acl bearings ....how do they specify clearance ...when you order them

is the same spectrum of clearances li o.e honda</TD></TR></TABLE>

Ask earl or Mike they seem to have sucsess with them. So they might be able to better help you.

As I understand it you can only make changes say .010'' over etc. I like to set up my motor to within .0001'' to .0002''.

I have seen engines with a .0004'' variance that honda bearings can adjust to close to .0001''

Does this make a differance? hell I don't know but thats how I was taught by honda so thats how I do it.

Suprdave

Mine are .0020 all the way across. Rich told me he likes to run atleast .0020 in the race engines, so you can run lighter weight oil without problems.

Suprdave

TREVER

I like 0017-.0018 on mains and .0014-.0015 on rods basically the loose end of what honda recommends

earl

For the record, GSR rod bearings are .040" smaller across than ls bearings. You can run a ls bearing in a gsr rod by chamfering .020 from both sides of the bearing surface. This gives you a larger bearing surface against the rod to help absorb energy. I do this with all my race motors but most builders don't like to deal with those kind of details.
On the other hand, I have no idea why anyone would want to put a gsr bearing in an ls. You would lose .040" of bearing surface. Does not make sense to me.
As far as clearances go, most people, me included, do not have the ability to measure .0001" accurately enough to choose PROPER bearing colors. That is the beauty of the ACL's. Install them, plastigage them to insure they are in the proper range (they always are) and forget them. Quality is as good as Honda, they are available and are half the price.
As far as mains and thrusts, all B's are the same size

Suprdave

Talk to Rich about it...The GSR Bearings ARE different, as far as the coating that is on them. I was told they have more longevity...

Suprdave

TREVER

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by earl &raquo;</TD></TR><TR><TD CLASS="quote">
As far as clearances go, most people, me included, do not have the ability to measure .0001" accurately enough to choose PROPER bearing colors. That is the beauty of the ACL's. Install them, plastigage them to insure they are in the proper range (they always are) and forget them. </TD></TR></TABLE>

True for most, get it within .0005'' what plastigage is capable of and run it. I guess I'm just a tweaker when it comes to my engine.

earl

IMHO, with all due respect to a great machinist, a coating will probably not give them anymore life. LS and GSR bearings all look the same to me when coming out of used engines. I could be wrong, however.

TREVER

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Suprdave &raquo;</TD></TR><TR><TD CLASS="quote">Talk to Rich about it...The GSR Bearings ARE different, as far as the coating that is on them. I was told they have more longevity...

Suprdave</TD></TR></TABLE> yeah I remember reading a article about Honda's development of the gsr bearings somewhere. The best benefit i can think of is that there is less friction because there is less surface area, as well as the coating. It must be a better bearing or honda would not have used it on there best b series engines.

TREVER

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by earl &raquo;</TD></TR><TR><TD CLASS="quote">IMHO, with all due respect to a great machinist, a coating will probably not give them anymore life. LS and GSR bearings all look the same to me when coming out of used engines. I could be wrong, however.</TD></TR></TABLE>

More life is I don't know, But I know that coated bearings offer better protection during extreme conditions. Just as coated pistons do

b19coupe

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

True for most, get it within .0005'' what plastigage is capable of and run it. I guess I'm just a tweaker when it comes to my engine.</TD></TR></TABLE>

I am with Trever on this one. My racecar is also my daily driver, and since I run it to 9,500 on a regular basis, it's good to know that my bearing clearances are perfect. OEM Honda bearings are the shiznit!

Suprdave

I'm not hatin' on ACLs at all...I'm building a LSVTEC Customer Motor and I'm using ACLs. It's a cost issue in that case tho...I think they are a great bang for the buck.

Suprdave

tony1

I agree with the honda boys on this one. GSR rod bearings are the ****! I read a big article a while back about them and how honda put alot of r&d into the design of them. I'll try to find it again. It was very interesting. GSR rod bearings are known all over the racing industry. Alot of V8 guys even use them in their motors! The narrower bearing results in less friction and the coating does the same. I'll try to find that article, it goes very in depth about it all.