Rod bearing clearance issue

BFIT · 07-10-2009, 10:11 PM

I started assembling my Ls block yesterday and ran into some rod bearing clearance issue. I am using Acl Duraglide bearings. Now #1 and 2 clyinder checked out fine at .001. But i am having trouble with the # 3 and 4 bearings. #4 has way too much clearance it was between .003-.002. Than #3 was way to tight it was over .001 to the point where i couldnt spin the crank because of it. Now my rods have been reconditioned because i'm using ARP rodbolts.

I was thinking of switching over to Oem bearings but didnt really have a clue on choosing the right color clearances? Can any give me some insights on it i really appreaciate it thanks.

***C Lo*** · 07-11-2009, 05:40 AM

you are sure that all of them are ls rods? How are you removing the rod caps? if you are hammering the arp studs down that could cause it to read tight.

it happened to me before. as for the loose one i cant think of anything right now.

xsenceo89x · 07-11-2009, 08:25 AM

Use a bigger bearing. Bearings are different sizes. I personally use honda oem bearings because theyve been proven to 200000+ miles

Honda Bearing color to thickness chart for everyone who loves using OEM bearings - Honda-Tech

***egb18c5*** · 07-12-2009, 01:56 AM

take your crank to the machine shop and let them measure the crank journals and the ID of the big end of the rods. after you get your mearsurements, click the link that xsenceo89x posted and go from there.

imo, rods 1 and 2 are too tight for my likings.

if you need any more advice or help, you can pm me or just ask again here

BFIT · 07-12-2009, 10:56 PM

Deffnitely bring the crank and rods to get measured,switching over to oem bearings forsure! I kind of wanted my specs to within .0015

sohc-gt · 07-13-2009, 12:24 PM

time to do some math. get a digital micrometer and start measuring. your going to need this formula:

Honda Bearing color to thickness chart for everyone who loves using OEM bearings - Honda-Tech

single slam 12 · 07-13-2009, 02:59 PM

Well i get them from the numbers on the crank and the numbers on the block were the tranny goes.. well thats the way theytold me when i called the dealer hope it works out for you bro and g/l

BFIT · 07-14-2009, 09:52 PM

Quote:

Originally Posted by single slam 12

Well i get them from the numbers on the crank and the numbers on the block were the tranny goes.. well thats the way theytold me when i called the dealer hope it works out for you bro and g/l

I checked that once i knew about it, the oem bearings for my mains will work fine. Since i'm still using my factory main bolts. But my rods i'm using Arp rodbolts, and my rods been resized. So the oem bearings color wouldnt really work out? I'm probably going to need thinner ones due to Arp higher torque spec over oem ones.

Plus all the ACL bearings that i plastiguage with were all to thick and out of specs even on the mains. Did any of you guys had this problem??

07-10-2009, 10:11 PM	#1 (permalink)
BFIT Brand Spanking Noob Join Date: Apr 2009 Posts: 7 iTrader: (0)	Rod bearing clearance issue I started assembling my Ls block yesterday and ran into some rod bearing clearance issue. I am using Acl Duraglide bearings. Now #1 and 2 clyinder checked out fine at .001. But i am having trouble with the # 3 and 4 bearings. #4 has way too much clearance it was between .003-.002. Than #3 was way to tight it was over .001 to the point where i couldnt spin the crank because of it. Now my rods have been reconditioned because i'm using ARP rodbolts. I was thinking of switching over to Oem bearings but didnt really have a clue on choosing the right color clearances? Can any give me some insights on it i really appreaciate it thanks.

07-11-2009, 05:40 AM	#2 (permalink)
*C Lo* Gold Member Join Date: Jan 2006 Location: nassau Posts: 2,948 iTrader: (8)	you are sure that all of them are ls rods? How are you removing the rod caps? if you are hammering the arp studs down that could cause it to read tight. it happened to me before. as for the loose one i cant think of anything right now. __________________

07-12-2009, 01:56 AM	#4 (permalink)
*egb18c5* Moderator Join Date: Dec 2005 Posts: 1,644 iTrader: (2)	take your crank to the machine shop and let them measure the crank journals and the ID of the big end of the rods. after you get your mearsurements, click the link that xsenceo89x posted and go from there. imo, rods 1 and 2 are too tight for my likings. if you need any more advice or help, you can pm me or just ask again here __________________ Perfection is perfected. can i get some rep points? lol

07-13-2009, 02:59 PM	#7 (permalink)
single slam 12 Noob Join Date: Jul 2008 Posts: 87 iTrader: (0)	Well i get them from the numbers on the crank and the numbers on the block were the tranny goes.. well thats the way theytold me when i called the dealer hope it works out for you bro and g/l __________________ puerto roc#1 brand spankin noob these nuts

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07-11-2009, 08:25 AM	#3 (permalink)
xsenceo89x Member Join Date: Oct 2006 Location: westchester Posts: 939 iTrader: (2)	Use a bigger bearing. Bearings are different sizes. I personally use honda oem bearings because theyve been proven to 200000+ miles Honda Bearing color to thickness chart for everyone who loves using OEM bearings - Honda-Tech

07-12-2009, 10:56 PM	#5 (permalink)
BFIT Brand Spanking Noob Join Date: Apr 2009 Posts: 7 iTrader: (0)	Deffnitely bring the crank and rods to get measured,switching over to oem bearings forsure! I kind of wanted my specs to within .0015

07-13-2009, 12:24 PM	#6 (permalink)
sohc-gt Senior Member Join Date: Dec 2005 Location: BK Posts: 1,443 iTrader: (1)	time to do some math. get a digital micrometer and start measuring. your going to need this formula: Honda Bearing color to thickness chart for everyone who loves using OEM bearings - Honda-Tech

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