CaliforniaDad

iTrader: (6)

I'm rebuilding a D16Z6 right now and I'm having clearance issues with the number 4 rod bearing. The rod is marked "3" the crank is marked "B" Using the honda bearing guide is says a "3-B" is green. When I use a green bearing, torq it down the 23ft lbs my plasti-gauge reading is .0001 way too tight. Please Advise.

CaliforniaDad

iTrader: (6)

What bearings do I need to get to the proper clearance? I tried yellows and still too tight.

CaliforniaDad

iTrader: (6)

Also noticed this engine has P08 pistons in it (D16Z6) I have another stock (d16Z6) and it has P028 pistons. I'm confused please help.

CaliforniaDad

iTrader: (6)

Boy whoever installed built this motor installed the rings upside down too......Gosh!

apexi_rsx

they dont sell in the color code anymore. most of the aftermarket bearings are the green ones.

Dc4LsTeG

iTrader: (7)

?? OEM Honda bearings are sold by colors

As for clearance you mean your at .001" and not .0001" correct?

And have you done the measurements using the correct tools or are you just plastiguaging?

CaliforniaDad

iTrader: (6)

Yeah my bad .001 and just used platigauge. the other 3 came out at .015"

rich7777

Californiadad, try taking those bearings out and giving the backs along with the journal a good clean down. Make sure the bearing is completely dry to. Let me know...

rich7777

What did the yellows come out at?

CaliforniaDad

iTrader: (6)

The yellows seem to come out the same .001" I'm wondering if there is a defect in the rod.

CaliforniaDad

iTrader: (6)

Also will the P08 pistons cause any ill effect in the engine VS the P028 pistons?

idreamidrive

You could also do it the VW way and if it spins around the crank freely only one time around with a hard toss, the clearance is perfect.

CaliforniaDad

iTrader: (6)

Hahahha....funny

Dc4LsTeG

iTrader: (7)

Sounds like you have a problem with the rod or crank if your getting the same clearance with different size bearings. Do you have access to a mic and dial bore gauge?

CaliforniaDad

iTrader: (6)

I do have a Mic but no dial bore gauge. I'm going to take it to the machine shop and have them resize/check the rod. Because all other 3 rods came out at .015" clearance

rich7777

You could just polish that one journal. That should give you round about what you need. Have you definatly ruled out what i first said ? x2 different sized bearings should give you a different reading of around .0002.

94EG8

P08 pistons will drop the compression ratio down from 9.14:1 to 8.26:1 great if you want to boost, not so great if you don't. I'd find the right pistons or a set of P2E D16Y7 pistons (they'll up the compression slightly to 9.62:1)

rich7777

Look at his avatar if you think thats funny

Dc4LsTeG

iTrader: (7)

Then id at least check the crank journal for that rod with the mic and at least make sure thats in spec and not out of round. Just be careful about having resizing done first unless the rod is out of round because it seems there might be another issue if different bearings are giving you the same clearance

apexi_rsx

the piston should have nothing to do with rod bearing clearances. try another rod cap on that rod and see if the clearance changes...

CaliforniaDad

iTrader: (6)

It was the rod, for some reason it was too tight. So the machine shop re-conditioned the rod back to factory spec. All good now. So using the p08 pistons in this D16Z6, will it be something a normal driver would notice? I'm building this for a customer that is all stock. he just wants something that will last. He is not a racer so think he will be able to notice any difference?

rich7777

Hmmmm personally i'd go for the higher compression option. If he does a lot of driving having a higher C/R will improve gas/petrol milage.

94EG8

It's going to be gutless with those pistons in it. You can probably find a good used set of P2E or stock pistons for next to nothing.

CaliforniaDad

iTrader: (6)

I have another D16Z6 in my garage that i'm going to pull the rods and pistons out of it (p28) and use the rings and bearings off the P08 pistons. Ill have to re-plasti-gauge everything over again to make sure those rods don't interfere with a different crank.

94EG8

I'm pretty sure the rings are different. Same diameter, but I different thickness I believe.