I cant believe it! Fully built, $7500, 700 miles, and CRANKWALK!!

[Tevenor]

Originally posted by GRNDSM
>>You can take samples and take polls of Club DSM members, but don't
>>think that this is a valid cross section of DSM owners
>
>EXACTLY! Finally a voice of reason.

Of course a cross section of any DSM enthusiast site will not be representative of the majority DSMs out there. But David said: “I maintain that the 2g's outnumber the 1g's and it is possible that that skews any CW estimates, that's ALL I'm saying”.

And all I am saying it that this is wrong…

And I agree with you completely Leon.

Originally posted by GRNDSM
My guess would be that this ratio is even worse when you ask your service department, because most 1G owners would not take their $2000-$4000 car to have dealer install a new short block (costing $3000-$4000).

Exactly. How many 1G 'my transmission sucks and I have changed everything' posts has everyone seen both here and on other boards? Let me give you a hint. They aren't all bad synchros.

 

[GPTourer]

Your poll is among enthusiasts, my statment was of total production. The two are not interchangable.

 

[GRNDSM]

>Your poll is among enthusiasts, my statment was of total production.

Right, but Mitsu will never release numbers about the total production, nor will they even know an accurate number of crankwalking cars. I know that many people replaced crankwalking motor with out wasting their time talking to Satan. So since you can not look at total production numbers, polling the enthusiast is the next best thing.

BTW while enthusiasts are not a good representation of overall DSM production, they are a VERY good representation of turbo and AWD portion of the cars sold.

Leon
RR

 

[NDgsx]

Just a little FYI Leon has more real world experience with dsms than any of you could even hope to get. If you guys have been into dsms for any length of time you'd know who he is.

 

[GPTourer]

So since you can not look at total production numbers, polling the enthusiast is the next best thing.

Maybe, if the question were about how well modified cars hold up or are resistant to CW, my posts were to the point that there may be other factors at work making it difficult for anyone to make a total general statement about how well 7bolts hold up to 6bolts. While I agree that there is a serious issue with some of these cars, I still don't agree that it is a 20 to 1 ratio. Even you admit that no one has total numbers. If anything, I could poll all the turbo DSM owners that come in for service at my dealership, but that would only provide a crossection of the people that live in this area. Still, it would be better then picking people who answered a poll on a forum for DSM enthusiasts. We are going around in circles. However, out of all of the turbo DSM's that come into service here, only a small portion are modified which I would think, means that people that frequent DSMtalk and answered that poll are not necessarily a "VERY good" representation of the turbo an AWD cars sold.

 

[1_vicious_gsx]

Originally posted by ProjectDSM
Ahh jeezzzz all this talk about Crankwalk has me kinda worried. I've had a ticking noise coming from my motor for quite some time. A few people Ive talked who have heard it in person say its my lifters. I think Ive listened to them just to kinda hope its exactly that. Im at 57000 on my motor now and think I need to have something done before waranty is gone. What can you guys suggest?

May just start a new thread on this one...

I have a 99 GSX and I heard a ticking also. Found out it was my fuel pressure regulator cycling at idle. BOY WAS I RELIEVED

Can anybody confirm that the late '98 & all '99 4G63 engines have a better or new designed thrust bearing? I measured my end-play when I put my new clutch in recently at 51,000 miles and it was right in the middle of the correct specs. If I remember correctly the specs were .002-.007, mine was at .004-.005 of an inch.

 

[1_vicious_gsx]

Originally posted by HighPsi91
One thing I noticed on the 2Gs I have worked on is the clutch hydraulic system is a bit fishy. If you grab a hold of the rod that goes between the slave cylinder and the release fork and try pushing it back into the slave cylinder you cannot. On a 1g it pushes in with very little effort. If this is the case then it means that there is always hydraulic pressure trapped in the 2G's sytem. This would cause the throwout bearing to always have some degree of pressure against the clutch. Is this just the cars I have seen or are all your cars like this??? Go out and check.

First check the free-play adjustment under the dash. If there is no free-play at the rod going into the clutch master cylinder then the system will "pump up". If you have acceptable free-play, then bypass the damper assembly that's in-line at the tranmission. My 2g slave cylinder rod will push in easilly. No binding or excess pressure.

 

[Saber_TF]

Correct me if i'm wrong but, did mitsubishi ever releasing some kind of TSB about this problem nor what can be done to fix it?

Seems like a flawed design that hopefully was addressed to mitsubishi's R&D department & technical engineers. But it kinda makes you wonder if the new Evolution 7 is gonna have a crankwalk problem in the near future eh? Someone grab some technical data on that engine & find out what changes have been made at the bottom end.

The cure must be found!

Saber!...!...!

 

[Saber_TF]

Sorry bout the typos! It's way past my bedtime hehe....

Saber!...!...!

 

[Philthmonger]

talk about beating a dead horse.....mitsu sucks, plain and simple. doesn't anyone remember the japanese mitsu recall a couple of years ago? I believe it was the largest recall in Jap history.....a shitload of crankwalking shitboxes.....and we're not talking just sports cars like the eclipse, we're talking suv's and minivans, i.e. normal cars that were not generally beat on. That's a fact. yes, 2g's crankwalk. adjust your buying and selling practices accordingly. buyer beware. I can't even begin to fathom why there was not a similar recall in the US, surely mitsu would no longer exist as a car company if it happened. The Jap recall nearly put them under.

 

[mr.goggles]

I've read the whole thread and i have a couple questions.

1)do the 1g 7 bolt engines crankwalk as often as 2g 7 bolt engines?

2)with those of you that know 1g's that have crankwalked, were they 90-91 or 92.5-94?

I know i recall someone making a general statement that 2g 7 bolts crankwalk more then 1g 7 bolts, but it wasnt for sure. I'm sorry if this question has already been asked.

Thanks

 

[GRNDSM]

>1)do the 1g 7 bolt engines crankwalk as often as 2g 7 bolt
>engines?

Tough to say, there weren’t anywhere near as many 7 bolt 1G’s as 2G’s. But if had to guess, I would say that it is not common on 1G’s.

>2)with those of you that know 1g's that have crankwalked, >were they 90-91 or 92.5-94?

Yes, I had two 94 motors that crankwalked and know of several others. But it does not seem to happen as often as on 2g’s.

Leon
RR

 

[TSi92]

Just read the opening story. http://www.magnusmotorsports.com/crankwalktheory.htm

This is not the first case of CW almost right after initial start up on a 2G motor. My friend also spent big bucks on a engine build up by a reputable DSM performance shop, and it walked almost right after start up.

 

[25psi]

Originally posted by rdrkt
GSX4LIFE: You spent 7500 on a motor rebuild from Extreme? That’s insane. Its funny a friend of mine went to the same machine shop that they use and had a 6bolt motor of his crank walked as soon as he fired it up and that was on a high priced motor too. That really sucks that this happened to you. I'm sure they will do the right thing. Keep us posted.

Walking a 6-bolt?
WHAT IS THIS WORLD COMING TO!

 

[GrocMax]

Repeat after me-

blah, blah, blah

Jeezus!

 

[mitsufrkr]

what is crankwalk. and shoukld i worry about it.in my 92 laser rs awd. i plan on having the motor rebuilt. should i go on ahead and have the transmission rebuilt too.

 

[Saber_TF]

If you can afford it, yes. I know i need to rebuild mine soon! My question is does anyone have the part number for the transmission rebuild kit?

Saber!...!...!

 

[Benwah93awd]

I've been into DSM's for about 3 years and I've noticed the 1G 7 bolt motors tend to throw rods rather than crankwalk which either way still sucks. My 93 AWD threw a rod and it was all stock with 146K and had all maintenance, needless to say I was pissed. I stuffed a motor into a 94 non-turbo with 118K because the motor in that one shot the #3 rod through the pan and put a hole in the block you could put your hand threw. That car was all stock as well and was maintained and driven by an older couple. Also from reading on here it seems the 1G 7 bolt throw rod when modded as well, I never got that far as I will resort to a 6 bolt setup. Although with $7500+ invested into a motor that thing ought to do more than go fast if know what I mean.......... That's why I always give props to guys who can build wicked fast motors in their home garage and don't need to pay the big bucks to go fast. I was fortunate enough to meet one locally and sometimes I think the big shots in DSM performance are a bit over rated. Although since they were lucky enough to have the money to start a business way back when DSM tuning was just getting started they get the reputation by default. I'm not saying they aren't any good at what they do but just that they aren't that far ahead of some of the guys that post on here day to day. Damn this site is addicting as hell but you learn something knew almost everytime your on it and if nothing else there is always some post on here funnier than hell. In my opinion this makes DSMs a cut seperate from the rest! Alright I cashed in my 2 cents, you all take it easy, it's 3am and I'm going to bed!

 

[insane147]

i totally agree with the big shots dsm view benwah has....... their performances are just as admirable as a kid doin low 12s with no money. when you have money from sponsors, R&D, and a buisness, being top of the food chain is expected.

 

[umiami80]

IF the motor was brand new and it crank walkd, 100% their fault, they assembled the motor wrong and put way too much force on the crank, casusing it to walk. Their fault, if you pay them any $$$$$$ you are a sucker and deserve to lose your money. Fight it.

 

[Violater101]

Most 1g people don't worry about crankwalk and if a motor goes walking at 140K, then its just old...not just dsm motors do that. As for rebuilding your tranny, if it shifts fine, then I wouldn't worry about it that much personally...maybe change the fluid's is all. If you got the money, they go for it.

 

[turbobrian]

wow i would think sean would be smart enough to talk you in to a 6bolt setup than the know to be prone to crankwalk 7bolts. its not like you didnt have the money!

sorry, hope they help you on this one,
turbobrian

 

[Topper348]

My friend with a 95 GSX (which i sold him) has over 120K on it. Its very lightly modded, but the crank has no sign of CW, it now has a 2100 clutch and is still going strong.

Any motor can crankwalk. I dont care if its a 7-bolt sh!tbox or a chevy cavalier. Anything can walk. I believe that if a motor walks in under 800 miles, then something was mechanically not installed correctly, whether it be weak parts or out of spec. I think that mitsu screwed the blocks on 2G's plain and simple.

Dont get me wrong, 6-bolts walk too, but I bet most of them walk with relatively low mileage due to an improper rebuild. Same with a 2G, I bet most of them that die in the first 1000 miles are a misaligned bearing or some other flaw that will make it prone to walk. But nobody can say that 6-bolts are just as prone to CW as 2G 7-bolts.

 

[DevilSperm]

wow bring it back from the dead why dont ya