sec711

i just bought a white 06 evo 9 six months ago. i'm starting 2 get ready 2 do some small work 2 it. but one of the issues that i'm thinking of is the crank walk the was in the 2nd gen eclipses. i know the evos have the same engine as the eclipses n i'm wondering if anyone has heard of crank walk or anything else bad about the evos. thanks let me know what u guys think. thanks.

Clutchdc5

iTrader: (1)

What exactly is crank walk..?

sec711

no no i don't have it!!!! i just wanted 2 know if anyone has heard or an evo having it

mtwnind.

iTrader: (6)

A 'crankwalk' or 'walking' crankshaft, occurs when an engine has thrust bearing failure or "blown thrust".

This condition occurs when the the crank suffers excessive movement (crankshaft end play) and causes the crank angle sensor reluctor plate to come into contact with the sensor.

buti dont believe this is a problem with the evo's.
just the earlier 7bolt 4G63's found in the 1gb dsms and 2g dsm.

Speed Corps

iTrader: (36)

I've never heard on an EVO having crank walk. Not to say it's never happened though. I would believe that by now the engineers at Mitsubishi would have fixed it. You don't have nothing to worry about.
Crank walk was a problem with the 7 bolt 4G63 motor where the journals on the crank were not machined correctly. This caused the crank to move inside the main caps and after so many miles it started to destroy the crank angle sensor and spin bearings and all kinds of nasty things. This was in the late 1st generation Eclipses and Talons and the 2nd Generations.
I'm sure someone else has more info on this but like I said, you have nothing to worry about in your EVO.

sec711

thanks for the info. i know that the evo 4G63 is tune differently then the eclipse 4G63. i was also thinkin the same thing that in 7 years they should have it fixed. i talked 2 someone at the dealership by me n the said that they near heard of the evos having it. but i just wanted 2 c what everyone else thought about it. thanks again 4 the info

20lbsboost

iTrader: (1)

if you have crankwalk on your evo consider yourself lucky because you are now the only person on the face of the earth that would have crankwalk on an evo hahaa

UT_Evo

iTrader: (5)

It isn't the tune on the Evo, its the setup of the engine, there's a lot of parts that are different even though the main "frame" of the engine is the same 4g63. Its the same thing with that new "world engine" everyone keeps complaining about.

Cirrusly Evolvd

iTrader: (44)

Crankwalk was most prevelent in the 95 and 97 year model engines. It has since been fixed.

Yogi_B

The only evos known to have crankwalk are Evo's 1-4. Mitsi redesigned the thrust bearings on the evo5 blocks which seemed to have stopped the engines from walking.

90GSX-03EVO

iTrader: (27)

No they don't.

Cirrusly Evolvd

iTrader: (44)

He's referring to the older 1g and 2g eclipses so yes they do...it's still a 4G63.

DSMEVOLUTION

iTrader: (7)

Well the 2g eclipse motors were a 4g63 but they shared a similar motors to evo's 1-4. 2g eclipse motors will assembled in the USA while evo motors are straight from Japan. Any motor can crankwalk it doesn't matter if it's a 4g63 or a v8. I had my 95 tsi for 4 years and sold it when it had almost 90k on it. There was not even a slight hint of crankwalk on that motor and I even had an aftermarket clutch. 1g dsm shortblocks did not suffer crankwalk like the 2g dsm's did. Although there were cases of crankwalk occuring at times to 1g dsm's. Evo motors should be fine but evo's are still fairly new to even tell if crankwalk will or can occur. I'm sure it will happen or has already happened to atleast someone. With the heavy duty aftermarket clutches that people are putting in along with the increased power, it can definitely happen.

90GSX-03EVO

iTrader: (27)

Really? I had no idea that the DSM's had 4G63's in them.

It's not the same, though. Try using DSM camshafts, pistons, con-rods, etc. on an Evo. Hell, go external. Try using a DSM timing belt, or DSM spark plug wires, maybe an intake or exhaust manifold? I wonder if those will bolt right up.

Evo 1-3, not 1-4.

90GSX-03EVO

iTrader: (27)

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