Alright guys, I'm attempting to rebuild my z6. I've come upon a few questions and I need some good advice from engine builders.

I've looked at the color codes on my block and crank and this is what I got:

C2 = Green
C3 = Brown
C2 = Green
C2= Green
C3 = Brown

When I plastigaged the ACL STD bearings that I recieved I measured

.0015in (.038mm) for journal bearings 1-5. I always thought that 1, 5 should be different then 2, 3, and 4. Is that true? Since the plastigage says .0015in (.038mm) for all 5 can I still run these tolerances or should I run something different?

I'm also using ACL STD for the rod bearings and on the crank it says B all across and on the stock rods are number 2. So I would assume that the stock rod bearings were:

B2
B2
B2
B2

Which would make the rod bearing colors yellow. When I plastigaged my ACL rod bearings and my NEW Eagle H-beams I got .002in (.51mm) for all 4 for them. According to the helms the service limit is .002in (.5mm) which would mean the bearings I'm using now is at the service limit. I thought that the Eagle rods were a number 3 rod? And since my crank has letter B for the rod bearings wouldn't that make the rod bearings a green? And I thought ACL STD bearings come close to a Honda green.

I'm a bit confused as what route to go now, should I re-measure with plastigage or should I color match some bearings? The crank is in good shape when I pulled the crank all bearings in the motor had little to NO wear at all. The motor is a automatic d16z6 that was pulled by me at 95k miles.

Engine builders need advice as to what to do now!

 

I'll be boosting my Z6, so this is mainly for a F/I motor build. I'm going with my .002 spec'd clearances for my build (used Plasigage of course). Yes, it's the factory limit...but did the factory engine expect to be boosted? Running 8k plus rpms? Through my research, and from other reliable motor experts I've found out looser FTW!

Gotta remember, Honda's tight clearances and tolerances allow for maximum longevity. I'm not expecting my boosted engine to be running 100k+ miles like your average DD.

GL!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by blk92_d16 &raquo;</TD></TR><TR><TD CLASS="quote">I'll be boosting my Z6, so this is mainly for a F/I motor build. I'm going with my .002 spec'd clearances for my build (used Plasigage of course). Yes, it's the factory limit...but did the factory engine expect to be boosted? Running 8k plus rpms? Through my research, and from other reliable motor experts I've found out looser FTW!

Gotta remember, Honda's tight clearances and tolerances allow for maximum longevity. I'm not expecting my boosted engine to be running 100k+ miles like your average DD.

GL!</TD></TR></TABLE>

This motor is also my boosted build, and I'm not expecting this motor to last beyond 100k miles also. But I was just wondering if these tolerances would be ideal. I know that my main bearings are within spec, it's just my rod bearings that making me a bit edgy.

 

Would like to know if anyone is running these or would run these clearances. This is the first motor I'm building and would like to get some miles out of it.