I have heard that this can happen with an aftermarket clutch, i am planning to go with an ACT extreme pp and street disc. Is this a good setup or am i looking for failure in the long run?

 

I run the ACT XTSS and I highly doubt there is any crank walk.

 

if you have a DSM you will crank walk if 7 bolt motor. a clutch will not make this happen

 

i have never heard of a honda having a problem with the crank walking, with any clutch

 

same here. Just heard of 97-99 eclipses being notorious for it. And it was also in a few other years

 

i run the act exteme clutch with a street disc in both my integras, and my daily drive has 196,000 miles on it so you wont have a problem, crandwalk is a 2nd gen DSM issue.

 

http://www.dsmtuners.com

 

With a clutch with more clamping force, more pressure is put on on the flywheel when you release the clutch. Even with my stock clutch, I never sit a light with the clutch released because it puts extra stress on the thrust bearings.

 

discussion?

 

I've never heard of a honda having crank walk.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Danziver &raquo;</TD></TR><TR><TD CLASS="quote">I've never heard of a honda having crank walk.</TD></TR></TABLE>

likewise

 

crank walk? i didnt know you had a DSM

 

we have thrust wasers to prevent this....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by 95 integra &raquo;</TD></TR><TR><TD CLASS="quote">we have thrust wasers to prevent this....</TD></TR></TABLE>

Thrust washers? You mean thrust bearings?

All engines have thrust bearings. Out cars only have one. If you put 800lbs of pressure on the bearing, it's gonna wear sooner or later, wich is probably close to the clamping pressure of most after-market clutches.

Fact is, you can have minimal crank-walk and not even notice it. It will probably decrease the life of the engine rings because they are being moved side to side.

My friend who is an excellent mechanic said that on some cars he was able see movement in the crank while the engine was still in the car by applying as much force as possilbe to the crank pulley and then depressing the clutch. He said in some cases, he could see a slight movement of the crank pulley in an outwards direction. The cars still ran fine however.

 

I agree. I ran an ACT HD-SS for 20k miles on a new set of ACL thrust bearings. When I tore the motor down, the thrust bearings had a bit of spot wear in two places around the outer edge of the bearing.

The thrust clearance was at .007" (well within spec) when the motor was built.

 

sorry to revive an old thread but i was doing a google search on how to prevent crank walk in my integra and came across this post with quite a bit of bad information.... i have an ACT heavy duty pressure plate with street disk and my crank walked about a 1/4 of an inch completely destroying my block after the engine only running 20k miles on a fresh rebuild.... not fixable

 

You know for a fact the clutch caused it?

 

S2000s and K series cars have crank walk issues with ACT clutches. I had a Prelude that I bought from a guy that had crank walk due to some stupid parts store clutch. I haven't heard of too many B series thrust bearing failures, though.

Either way...ACT's can be linked to crank walk on more cars than DSM's. Even on EVO's and S2000's. Both those cars have pull clutches to try to fight some of that.

I believe its a combination of the clutch and people that leave their clutch depressed for more than a few seconds at lights and when they're idling. I've seen people hold down clutches for an entire light :facepalm:

If you get any HD clutch, get a clutch interlock bypass so you can start the car without depressing the clutch. And step on the pedal only when needed. The second part is good practice even with a stock clutch.

ACT clutches feel like garbage, though. That's my biggest gripe with them. Pedal feels like stepping on a damp crouton. Vague, hard to push for no reason, no obvious engagement point, have to push the "race" clutch to the floor to shift at all (what kind of bullshit race clutch is that?!?!), clutch engages near the floorboard.

**** sucks.

 

Any engine can crank walk. Can be caused from a combination of things, poorly machined block (main bearing journals), bad thrust washers, blah blah blah. And yes a stiffer clutch can cause it, eventually wearing out the thrust bearing.

 

when you over-extend the pressure plate fingers, there is nothing left to give other than the thrust bearing clearance.