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View Full Version : b18 connecting rod bearing, is quite loose..What to do?



teh_mugen18
11-10-2009, 05:15 PM
The stock spec for the b18a rod bearing oil clearance is supposed to be between .0008" and .0015", and all of the bearings so far have met clearance within specifications, slightly on the loose side of things though. Until, connecting rod #3; its bearing clearance is looking closer to .002" than anything. What should i do, would it be safe to run it like that or is it an absolute must that i get an oversized bearing for that journal to bring the numbers within spec?

bigdare23
11-10-2009, 05:17 PM
Get oem bearings and just the color code chart.

punkr6
11-10-2009, 05:19 PM
needs to be in spec...

teh_mugen18
11-10-2009, 05:38 PM
UPDATE: i just re-did the plastigage on that journal, just to make sure, and this time around it came out nearly perfect. The plastic was crushed slightly flatter than .0015 but not so big that it fit in the .001. :thinking:

slow_hatch
11-10-2009, 05:42 PM
Double checking my work????

teh_mugen18
11-10-2009, 06:01 PM
Double checking my work????


:goodjob::goodjob:

yup! lol

also, i had to put the ARP connecting rod bolts in there, i figured why not check everything

slow_hatch
11-10-2009, 06:32 PM
:goodjob::goodjob:

yup! lol

also, i had to put the ARP connecting rod bolts in there, i figured why not check everything

lol, I agree. Everything checked out when we did it. :goodjob:

teh_mugen18
11-10-2009, 07:04 PM
checked out here too, y'all did a good job buildin it

green91
11-10-2009, 07:15 PM
I personally measured all the bearings on the build and recall them being in spec.. make sure the crank doesn't get rotated or the caps get shifted when installing them or it can throw the measurements off.

RBS
11-10-2009, 10:43 PM
if you measured once and its off spec, and then measured again and its within spec... your doing or did something wrong, or you cant measure lol

dallasb84
11-11-2009, 03:05 AM
your good

turbob20
11-12-2009, 06:05 PM
check recheck and double recheck. an ounce of prevention is worth a pound of cure.