Time to talk about crank walk

[ScubaSteve]

After reading a for sale post for a 2g gsx I realized that half the people on here have no idea what crank walk is and what the symptoms are. There are way too many people here that are way too eager to define any issue with a 2g as crankwalk. When you go throwing a word like crank walk around in someones for sale post and you dont even now what it is your really ****ing the seller over.

This is the article that taught me most of what I know about crank walk. If you have any more questions feel free to ask.


http://www.magnusmotorsports.com/tech/crankwalk.htm

[TalonTsi97]

good post, most people assume to much stuff about dsm's, and in the end they really dont know what there talking about. Most of the things said are blown out of praportion

[flashgordon]

I agree 100%!! People assume that every 2G has crankwalk and no other car on the planet has thrust bearing failures. I even had a '72 VW bug with crankwalk. It's too bad that so many people waste money and time doing a 6 bolt swap because of all the hype about 7 bolt problems. There are many 7 bolts making big HP numbers with tons of miles on a stock bottom end. You never hear about all of those stories, only the few that have thrust bearing failures. If I were to buy a 2G, I would have no hesitation in modding a 7 bolt engine. A little knowledge about this subject could save you from falling it the same trap as most people, so research crankwalk before you just blindly believe what you may hear from someone who doesn't know what "crankwalk" is or what causes it. Enough rant for now.

[Driven]

I have seen MANY 2g's and have yet to see one that actually has crank walk. I think the most common problem that people automatically say is crank walk are clutch hydraulic issues.

Just for reference, my stock 7 bolt was running PERFECT at 73000 miles when I pulled it. It had a 2600 on it for 20k miles and had tons of 11 second passes.

A friend of mine is now approaching 120k miles on his stock 7 bolt. It's been daily driven with a 2600 since around 50k miles and has countless drag passes on it in the 11's (with a best of 11.5 at 125).

[Silver04STi]

nice post, I have always wondered what crank walk was when people mention it. Thanks

[hystericfox]

That was an awesome link for people that are afraid of the 2Gs because of this issue. My own experience with walk ended at 80k on a car that had been modded before I bought it, assuming pretty significantly. (ACT 2600, wiring tapped for SAFC, Walboro 255, front bumper and support chopped for FMIC is a pretty good indicator.) The crank actually split in half. Before it went it ticked with my foot on the clutch, which turned out to be the crank hitting the crank position sensor.

Any motor can get excessive endplay. It's just another way to kill a motor.

[Sleeper]

Um, unless the thrust bearing and oiling is modified, a stock 7 bolt 4g63 circa 5/93-99 will experience crankwalk eventually. Yes there are plenty of 7 bolts making big numbers, yes there are ways around it but if you are buying a 2g with 120k+ and plan on installing a high sprung clutch, dont expect it to be a runner.

Driven, youre friend is very lucky to have such luck. I recommend that anything over 100K, you should do new main bearings and oil squirters to help reduce the risk.

The 93-94 7 bolts are a lot less prone for some reason but the 95-99 motors are plauged. When you pull enough of em apart and see what the thrust bearing (or whats left of it) looks like, you'd agree that it is a common and unfortunate problem.

[Vypurr2]

http://img138.imageshack.us/img138/2091/dsmcrankwalk3bd.jpg

[assault187]

good post! ....Hey i snapped a lifter ........dude,you have crank walk.


im was under the assumption that the 7 bolt 1st gens werent prone to crank walk ( though most other motors can get it ) untill they modified the block assembly for the 2nd gen line up.

[koho2731]

Here is some more info on crankwalk http://www.angelfire.com/pa4/crankwalk/Mvc_048x.jpg

IMO from every thing I read it has alot to do with oil pressure and really dosen't matter what pressure plate your running. However if you do have an oil pressure problem a heavy pressure plate will cause the thrust bearing to fail sooner.

[Driven]

Um, unless the thrust bearing and oiling is modified, a stock 7 bolt 4g63 circa 5/93-99 will experience crankwalk eventually. Yes there are plenty of 7 bolts making big numbers, yes there are ways around it but if you are buying a 2g with 120k+ and plan on installing a high sprung clutch, dont expect it to be a runner.

Driven, youre friend is very lucky to have such luck. I recommend that anything over 100K, you should do new main bearings and oil squirters to help reduce the risk.

The 93-94 7 bolts are a lot less prone for some reason but the 95-99 motors are plauged. When you pull enough of em apart and see what the thrust bearing (or whats left of it) looks like, you'd agree that it is a common and unfortunate problem.

I couldn't disagree more. I've seen a lot of 2G's among my friends and I have yet to see one crank walk. I've gotten the "oh my god, I think my car is walking" phone call on several occasions, each time, we were able to find the issue and fix it.

[koho2731]

I couldn't disagree more. I've seen a lot of 2G's among my friends and I have yet to see one crank walk. I've gotten the "oh my god, I think my car is walking" phone call on several occasions, each time, we were able to find the issue and fix it.

Isn't it like 30% of the 2g had crank walk or something like that. I have seen more then a few 2G's on the stock blocks with more then 100k with no issuse with crank walk too.

[hystericfox]

I thought it was 15%. Either way, its still slightly higher than some cars. But if I wanted longevity, I would have bought a Honda.

[TrboChicsRock]

Isn't it like 30% of the 2g had crank walk.

More like 3%

[koho2731]

More like 3%

Even better! I though I saw the 30% on RRE's site when I read it before, but I just looked troughit again and it didn't give any #'s.

[awdlaserbeam]

IMO from every thing I read it has alot to do with oil pressure and really dosen't matter what pressure plate your running. However if you do have an oil pressure problem a heavy pressure plate will cause the thrust bearing to fail sooner.

That could happen in some situations, but im sure if you put an upgraded clutch setup in a stock car that is going to put a little more stress on your motor and wear it down faster...

[endlessmyk]

I was at a car meet/show and this kid with a 92 Talon was trying to hype up his car to me and two other guys. He was looking like an ass, so he said something about mine and how I was dumb for modifying a 7-bolt. I started laughing and one of the other guys said something about the 1g 7 bolts don't have the crankwalk problem as much as 2g 7 bolts and even the 2g 7 bolts are over-exaggerated.

But yeah, people are WAY to quick to diagnose everything as crankwalk. "My brakes are squealing." "Oh dude, you have crankwalk."

[1fastalon]

Im pushing 103k and have No signs at all. Does this only apply to awd? I have a clutch, flywheel, and quafe waiting to go on.

[TalonTsi97]

Im pushing 103k and have No signs at all. Does this only apply to awd? I have a clutch, flywheel, and quafe waiting to go on.

post some pics of your car up

[koho2731]

It applies to fwd too

[ScubaSteve]

Um, unless the thrust bearing and oiling is modified, a stock 7 bolt 4g63 circa 5/93-99 will experience crankwalk eventually. Yes there are plenty of 7 bolts making big numbers, yes there are ways around it but if you are buying a 2g with 120k+ and plan on installing a high sprung clutch, dont expect it to be a runner.

Driven, youre friend is very lucky to have such luck. I recommend that anything over 100K, you should do new main bearings and oil squirters to help reduce the risk.

The 93-94 7 bolts are a lot less prone for some reason but the 95-99 motors are plauged. When you pull enough of em apart and see what the thrust bearing (or whats left of it) looks like, you'd agree that it is a common and unfortunate problem.

Actually most cases of crankwalk occur when the car is around 50k miles and people like to buy higher mileage 2g's because they know the car has no history of crankwalk.

If you read the link I posted carefully you would realize that the 1g motor was a 1993 7 bolt motor. You didnt even have to read carefully, they stated it constantly.

[awdlaserbeam]

lol SHOT DOWN:screwy:

Looks like we have one of the original DSM engineers on our forums.