Crank walk or bad balance shafts?

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Feb 27, 2007, 01:44 PM

#16

Chris@nolimitmotors

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Quote:

Originally Posted by fricci4993

Crankwalk hasn't been a problem since the Eclipse's. If I recall correctly it was isolated to a 6 bolt motor. We have the 7 bolts which are bulletproof in comparison. HOWEVER.... even a BULLETPROOF motor can get crankwalk when a heavy duty clutch/pressure plate is used..., OR excessive drag style launches are done...just FYI... If you talk to Mike W. at RRE, he will be able to give you much more descriptive insight.....

Crank walk was a problem in 7 bolts not 6 bolts. As far as i know, ive never heard of a evo 7 bolt having crank walk

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Dec 30, 2007, 05:38 PM

#17

dsmjeffro

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reason being the 2g 4g63`s had a push type clutch therefore heavy duty clutches were pushing on the crank wearing out the thrust bearings evos have a pull type clutch

think it solved the problem

by the way my car has the same 4k vibrating issue right now it happen after the cams were installed i had it up on a lift @ 4k the driveshaft vibrates badly i am 100% positive that my balance shafts are out of sync not the first or last with this problem when i fix it ill repost & share the details

Last edited by dsmjeffro; Dec 30, 2007 at 05:40 PM. Reason: fixer upper

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Dec 30, 2007, 05:42 PM

#18

Curt@MrLed

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sounds like the balance shafts are out of time..

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Dec 30, 2007, 07:41 PM

#19

bosox28

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Quote:

Originally Posted by Chris@nolimitmotors

Crank walk was a problem in 7 bolts not 6 bolts. As far as i know, ive never heard of a evo 7 bolt having crank walk

It's only the eclipse 7 bolts that had the problem like you said, don't know how or why but if I remember correctly all the motors made at the DSM plant now MMNA were susceptible. Which is why people do the 6 bolt swap or the JDM swap which is a 7 bolt.