scre

Okay guys,i started fully rebuild my engine and need advice for more questions.
In future i want take turbo.Engine is stock, only will use acl race main and rod bearings,other parts are OEM.I not want make big numbers may be 350-400whp.Now when search most people building engines with more clearance for bearings.I chek my main bearings with ACL STD and my numbers is of loose side of oem specs.Standart or new is (0.017-0.041) service limit is 0.050.My plastigage measure 0.045,will check rod bearings soon when arrive new rod bolts.
What clearance is good for turbo setups and what oil grade is used ?

1HGEJ2

iTrader: (1)

0.045 is perfect. 5w50 for turbo is good too

scre

Thanks for replay pal.What number to target for rod bearings.Standart is (0.033-0.061) and service limit 0.071 may be somewhere 0.050?

1HGEJ2

iTrader: (1)

0.050 is perfect too. i have this on my k20 turbo hx bearing size ( extra clearence). 0.033 is ****

BoostHatchFreak

on any engine .0035 -.004" is the normal for mains and .0025" to .003" for rods. so I hope what you said earlier is missing a zero

JRCivic1

In a Honda, those dimensions would make very low oil pressure and you would have rod knock.

OP, are you posting values in "MM" or "Thousands of an inch" ???

BoostHatchFreak

don't see where your getting that information from. honda stock is two thounds of a inch on the rods and three thousands of a inch on the mains. so loosing it up some for more "race" will not give it a "rod knock"

JRCivic1

Ummmm... the factory service manual.

1HGEJ2

iTrader: (1)

im in mm 0.050mm is perfect.

JRCivic1

For the connecting rods... I can agree with that.

scre

Hi,all I Mesured conrods and my numbers are between 0.045-0,048 . What think,maybe is little thick but is good ?