Rod bearing clearnces?
07-07-2009, 02:34 AM
#1
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Rod bearing clearnces?
Ive searched for 1 hour now..
Search feature owns me!
what are the tolerances for our main bearings?
for some reason mine were speced to 0025, 0024,0025,0024,0025
Search feature owns me!
what are the tolerances for our main bearings?
for some reason mine were speced to 0025, 0024,0025,0024,0025
07-07-2009, 02:54 AM
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Originally Posted by gingles
nvm...ignore last post....the numbers i gave you are right.
are having them so loose bad? also you see the crank? i had the oil holes chafered out so additional oil could be slinged around the rod bearings!
07-07-2009, 02:58 AM
#6
.017-.040 is the recommended oil clearance..........having loose main bearings is bad..........go on ahead and put a leash on the crank and take it for a walk
........go to calico.com and get your bearings......there calico coated ACL race bearings and are the cheapest place i could find them
........go to calico.com and get your bearings......there calico coated ACL race bearings and are the cheapest place i could find them
07-07-2009, 03:03 AM
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Originally Posted by gingles
are they .0025 in INCHES or MM?.....inches are .0007-.0016
He told me now to run 10w40.. maybe he speced this motor for this oil? i dunno GRRR
07-07-2009, 03:08 AM
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Originally Posted by gingles
son of a mother ******......ok.......
Rod bearing oil clearances
IN.0009-.0019
MM.024-.048
Main bearings
IN.0007-.0016
MM.017-.040
Rod bearing oil clearances
IN.0009-.0019
MM.024-.048
Main bearings
IN.0007-.0016
MM.017-.040
Tommrow i will call p-tuning maybe one of those guys will have some info for me! i know they did alot of testing on this! hopefully these guys chose this clearance for a reason! i have alot of money into this motor now
07-07-2009, 03:27 AM
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I used ACL race bearings (std size) and they were a tad over spec. I used Dart Machine in Troy, MI for my coatings and they can coat them to whatever thickness you need.
I have mine on the tighter side of toyota spec for both the rods and mains
I have mine on the tighter side of toyota spec for both the rods and mains
07-07-2009, 08:50 AM
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Originally Posted by gingles
i hear ya man.......you are torqing the main caps to spec right? 30ft lbs then 90 degrees
im not assembling the motor.. CFT is. im going to call today
07-08-2009, 01:07 AM
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Originally Posted by ElevationTC
Originally Posted by gingles
i hear ya man.......you are torqing the main caps to spec right? 30ft lbs then 90 degrees
im not assembling the motor.. CFT is. im going to call today
I set my clearances to 19 to 21 on both my main and rods. using calico coated ACL. I decided that after talking on the phone with Horizon motor sports (scion team).
if you could read, I said MAIN bolt... HENCE getting an align bore. 
Nice try
07-08-2009, 11:18 AM
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Originally Posted by RSracer
Originally Posted by ElevationTC
Originally Posted by gingles
i hear ya man.......you are torqing the main caps to spec right? 30ft lbs then 90 degrees
im not assembling the motor.. CFT is. im going to call today
I set my clearances to 19 to 21 on both my main and rods. using calico coated ACL. I decided that after talking on the phone with Horizon motor sports (scion team).
the motor was aline bored.. crank is fully balanced. each rod is fully balanced from heavist to lightest rod. basically a fully balacned rotating assembly. bs removed. carrila a beams je 9-1 pistons race bearings arp head studs