Did I just crankwalk?

[Travieso]

Sorry I know this is beat to death but a new crankwalk symptom just came to light to my knowledge.

A month back a blew my turbo and a balance shaft bearing all at once (lucky me). Since then ive been tryin to fix the problem one at a time as i discover them. Now im at the point where im ready to put the motor back together with a ton of new parts and i dont want to throw it all in the toilet cus of one tiny prob.... When i drove the car around after i put the new turbo in (just the turbo, no balance shaft delete or any other fixes) i notices my rpms dropped pretty fast to the point where my car died every 5th-ish time i push in the clutch.
Buddy said its because we didnt clean up all the old oil my blown turbo jizzed all up in the intercooler piping and it was sucking it in to the intake which cased all that. The block seemed fine to my observations but should i be worried/ take any precautions? I heard replacing the crank bearings can help but i just dont want this to bite me in the ass

I can post up any pics/ videos to give you guys some better ideas, i noticed a little play in the pistons, but after we cleaned them i found out they were Ross pistons and forged aluminum, so play is expected with those

 

[95AWD6Bolt]

When making a left turn does your clutch compress and not come up?

Its most likely not crankwalk.

 

[Travieso]

When making a left turn does your clutch compress and not come up?

Its most likely not crankwalk.

No, no clutch problems. Just the dramatic drop in rpm when the clutch is pushed in and the engine dying out every dozen or so times i engage the clutch

 

[delta448]

Check the clutch throw out bearing.

 

[JusMX141]

Amazing first thread. Did you even check to see what crankwalk symptoms are before jumping to conclusions?

What is crankwalk?


Since your car already has upgraded pistons, have you considered the likelihood that it may have an aluminum flywheel as well?

 

[Travieso]

Amazing first thread. Did you even check to see what crankwalk symptoms are before jumping to conclusions?

What is crankwalk?


Since your car already has upgraded pistons, have you considered the likelihood that it may have an aluminum flywheel as well?

Why thank you, and yes in fact that is where the origin of this whole thread began. ("Another possibility is having the engine RPM decrease significantly when the clutch pedal is down") After reading that from that faq my heart dropped because i remembered this being a new issue immediately after everything went wrong. Not sure about the flywheel yet but how the rpms reacted prior to all this implied it was stock.

 

[Tyeler18]

My car died! Crankwalk!

Just another ill-informed person jumping on the CW bandwagon.

More than likely your o2 or MAF is starting to go. Could even be IAC. Why not rather than jumping on crankwalk look at what ELSE causes these symptoms.

 

[Travieso]

My car died! Crankwalk!

Just another ill-informed person jumping on the CW bandwagon.

More than likely your o2 or MAF is starting to go. Could even be IAC. Why not rather than jumping on crankwalk look at what ELSE causes these symptoms.

I guess the only way to truly tell is to put her all back together. Ill be running speed density when shes in one piece so if that was the problem it will be eliminated.

Thanks for reminding me of my newb-ness guys, sometimes I get hysterical with these dsms keep the suggestions coming though they are going on my checklist before i put humpty dumpty back together

 

[Tyeler18]

Wait, you have the motor apart and don't know if it crankwalked? Why wouldn't you check the clearances and find out rather than putting it back together and hoping for the best.

 

[delta448]

Wait, you've got the engine out of the car?

Then why not just check the crankshaft endplay if you're so worried?

That's what CW is, excessive endplay of the crank.

 

[Travieso]

I told you guys i was a newb..... But most definitely will do. Im working alongside my friend/ dsm mentor and i thought id come to you guys first so I could go back to him with knowledgeable info instead of crazy talk about how some faq told me i got crankwalk. Im just a kid learning as I go. Guidance is appreciated though gents

 

[2slow4now]

^^ If it actually did walk you probably could just look at the thrust surfaces of the bearing and crank and know if it did. Mine did it and it was a no brainer that it did. It was ground up and scored and you could grab the balancer and "clunk" the crank back and forth.
If the engines apart and your worried about things just go ahead and check clearances. If your asking for things that might help prevent CW there are some things that might help. I'm @ work I'll get back on here if thats what you need.

 

[Tfitch90]

The word crankwalk should be prohibited !

 

[JusMX141]

The word crankwalk should be prohibited !

+1. Literally 99% of the crankwalk threads that are started are worthless.

These engines do not have a 100% failure rate- it's estimated that less than 4% of 2G 7-bolts in operation will/have suffer(ed) a crank-related engine failure. With those odds it's more likely that your lugnuts came loose.

 

[PieEyedPiper]

A month back a blew my turbo and a balance shaft bearing all at once (lucky me).... When i drove the car around after i put the new turbo in (just the turbo, no balance shaft delete or any other fixes) i notices my rpms dropped pretty fast to the point where my car died every 5th-ish time i push in the clutch.

A slight edit to your post and something becomes quite apparent. But I need to ask more questions. What repairs, exactly, did you perform? I'm not interested in the turbo.

 

[Travieso]

A slight edit to your post and something becomes quite apparent. But I need to ask more questions. What repairs, exactly, did you perform? I'm not interested in the turbo.

The last time i drove it was when i replaced the turbo and only the turbo, and that was almost a month ago. So no other repairs till the overhaul im doing now (overhaul in my opinion at least) But there isnt any endplay the crank seems snug and in place.

Thanks for the reassurance guys but i think i just caught crankwalk fever

 

[H4G64T]

Look this thread is easy to resolve.

1. Get a digital caliper.
2. Check the crankshaft play.
3. Post number.
4. We will confirm if it is with-in spec.
5. You will know if you have CW.

 

[kidtsi]

vaccum leak? boost leak? blow of valve not receculated?

 

[PieEyedPiper]

H4G64T, maybe you have some suggestions for the OP that are relating to the problem he's having with his car?

OP, what I was trying to point out was that it sounds like you're driving around with balance shaft carnage. If this is true, I'm not surprised you're having difficulties.

 

[Travieso]

H4G64T, maybe you have some suggestions for the OP that are relating to the problem he's having with his car?

OP, what I was trying to point out was that it sounds like you're driving around with balance shaft carnage. If this is true, I'm not surprised you're having difficulties.

Dont worry I'm not that much of a noob, no I dont have boost leaks, no im not vented to the atmosphere, and no after i replaced the turbo and the problem prolonged i garaged my car immediately. Yes like the dumb 20 year old i am i turned to the internet for a solution and sure enough I found a video with my similar strange sounds. Took off the oil pan and gave the balance shaft a little jerk and sure enough it already busted.

Ill update as I go incase I missed something but the balance shafts seems to be the for sure problem. Vids and pics Will be uploaded

 

[PieEyedPiper]

...there isnt any endplay...

Ill update as I go incase I missed something but the balance shafts seems to be the for sure problem. Vids and pics Will be uploaded

At this point, I don't see how this wouldn't be the problem. Did you remove the shaft? Was the bearing in pieces? Did you remove the belt? Is the belt wound up in the timing cover still? Did the belt cause you to jump time? Is the belt still hooked up to a wobbly/sloppy balance shaft?

I think you have your work cut out for you. Or at least a better direction to pursue

 

[Rengar18]

Dont worry I'm not that much of a noob, no I dont have boost leaks, no im not vented to the atmosphere, and no after i replaced the turbo and the problem prolonged i garaged my car immediately. Yes like the dumb 20 year old i am i turned to the internet for a solution and sure enough I found a video with my similar strange sounds. Took off the oil pan and gave the balance shaft a little jerk and sure enough it already busted.

Ill update as I go incase I missed something but the balance shafts seems to be the for sure problem. Vids and pics Will be uploaded

ANOTHER CRANKWALK THREAD .................
















sup Tre this is Gary from the meet.

Glad you found a good lead, only thing I could have came up with was possibly a huge vacuum leak and suggest a BLT.

Luckily I bought my 97 with the balance shafts removed (didnt find this out till I pulled the motor a few months back) so never had to deal with it, although i've heard the horror stories.

Pretty funny how some guys get all irate when CW is mentioned on here. It sucks that we have that stigma on these cars but its just how it is. New people will continue to jump towards that issue till the day these cars dont exist. Only thing we can do is educate, no need to be rude.

Make sure you mark the thread resolved if the balance shafts were the issue!

See ya later man

 

[Travieso]

so the car finally drives now after fixing the destroyed bearing for the balance shafts, but the problem persists where my rpms drop dramatically after i push the clutch in, in between shifting gears. Gunna have a look at the TOB as stated above. Any other suggestions?

 

[jimbob_843]

Ok, ok, so did you measure crank end play? I think .009 is the service limit there. And if the motor was out of the car how do you not know of the flywheel? Anyway with endplay aside, it might be your tob or maybe your clutch not adjusted corectly.

 

[H4G64T]

What does "the RPMs drastically drop" mean, this term is so vague whenever someone uses it. I was of the opinion that this means the RPMs drop below idle and cause a near stall.