APE Jay
Novice Class
Posts: 59
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posted June 05, 2012 04:19 PM
Rod bearing clearances
When installing rods on a ZX14 ( Carrillos in this case ) what clearances do you builders use.? The factory numbers, .0019" to .0034" seem awfully loose.
We usually set the busas up at .002"
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smokinZX14
Needs a life
Posts: 10197
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posted June 05, 2012 05:10 PM
 Edited By: smokinZX14 on 6 Jun 2012 01:14
quote:
When installing rods on a ZX14 ( Carrillos in this case ) what clearances do you builders use.? The factory numbers, .0019" to .0034" seem awfully loose.
We usually set the busas up at .002"
Jay , Roy sets his zx14 1530 motor up like his small block chevy motors .002 , he has had good very luck at that number on the zx14 motors ..I set up all my Mopar big blocks to .002 also .. At that number i go to the track and let it eat and never had a problem .. In the old days i would set them up with more clearence because we didn't have the Syn oils that we have today .. I would run Aero Shell 50 WT back then ..lol
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Smokin Performance Cycles..
Tampa Bay , FL .. Brocks Performance Dealer ..
Gen 2 ZX14R Best ET 8.43 , Best MPH 164.95
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06redzx14
Pro
Posts: 1022
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posted June 05, 2012 05:14 PM
I got .002 using black bearings, stock crank, and carillos
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APE Jay
Novice Class
Posts: 59
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posted June 05, 2012 05:32 PM
quote:
I got .002 using black bearings, stock crank, and carillos
That is what we have, but it is the bottom of the Kaw spec. So everyone runs these ZX14s at .002" with Carrillos without issues?
Jay
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smokinZX14
Needs a life
Posts: 10197
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posted June 05, 2012 05:57 PM
Edited By: smokinZX14 on 6 Jun 2012 02:03
quote:
quote:
I got .002 using black bearings, stock crank, and carillos
That is what we have, but it is the bottom of the Kaw spec. So everyone runs these ZX14s at .002" with Carrillos without issues?
Jay
Can't say everyone ... I just know about Roys 1530 motor .. Roy drag races and land speed races the bike .. He has not had any bearing problems after two years of setting LSR records ..But he is not using Carrillos , he is using Falicon rods ..
You might want to talk to Jim at CompetitionCNC.com. He had some problems with the Carrillo rods and bearing on his ZX14 .. I don't recall what problems he had , i just know the motor kicked a rod out of the block ..
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Smokin Performance Cycles..
Tampa Bay , FL .. Brocks Performance Dealer ..
Gen 2 ZX14R Best ET 8.43 , Best MPH 164.95
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KZScott
Needs a life
high on speed
Posts: 7235
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posted June 06, 2012 05:24 PM
Jim seems to like looser clearances on a big hp motor. Ive been told around .0026 or so on rods for more flow/better cooling. the spec for the 12 is nearly identical, but the service limit is .0039!
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CJ
Novice Class
Posts: 53
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posted June 07, 2012 11:13 AM
Edited By: CJ on 7 Jun 2012 19:27
I have mine at .0023-.0025 with brown bearings on stock crank with Carrillo rods torque to 35 ft.lbs with no issues so far and spraying the house down.
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07 plasma blue zx14
Ain't no fun when the rabbits got the gun
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