I should have listened to my father who had been a mechanic for 40 years. Remember the days when your Mitsubishi had a stock clutch and it shifted so quickly? All that is listed below means absolutely nothing unless your clutch is properly adjusted and is disengaging properly, have it inspected by a professional.
Read below to see how I wasted my time and money, if not for anything I enjoyed the cut up blocks and good times. Well not all was lost, This research and more like it that followed, allowed us to know exactly how to make this engine perform the way it does now.
'99 4g63 & 4g64 crankwalk
Years ago Magnus overcame all these barriers that others are still trying to catch up to now. The most reliable, most powerful Mitsubishi 4cylinders on the planet from years of knowledge. Seeing as how the 2g cars are starting to get up in the years in age and coming off of warranty our shop is beginning to see more of these failures.
With this situation becoming more commonplace, and cars getting heavily modified, we will undoubtedly be seeing more and more cars affected with this situation in the future.
But I am beginning to see and hear of at least 2 cases a month in the Toronto area alone, through contacts and calls from other shops and dealerships. What adds more fuel to the fire is the fact that 2g owners are basically helpless, Mitsubishi, and Chrysler will not own up to the problem, and no one can come up with a solution to the problem, nor even an answer as to why?
Case in point, we recently installed a fully built bottom end in a customers car I should point out it had no thrust problems prior the crankshaft endplay had started to change within kms. It was greater by.
Had the customer not cared to come in on time for his first scheduled oil change it may not have been detected in time. Being a stickler, and I hate leaving things to chance knowing the finicky nature of the 2g, I also checked the endplay.How to avoid "Crank Walk" and properly clean your crank passages - Jay's Tech Tips
It was within spec. The crankshaft endplay had been checked on three separate occasions, yet the thrust bearing still failed. The car had not been abused, the owner was very careful with the car obeying the break in rules. He had even requested I go with him the first time he put the car thru it paces, after the break in.
Measuring endplay with a dial indicator, we were now out of spec. We were screwed. Who is at fault for all this and who is gonna pay for it? I can personally tell you from experience that I do not like to do things twice, especially an expensive shortblock like this. All I can do is pray for no damage and swallow it hard.
Up to now I had been lucky, almost all of the 2g rebuilds that we had done had turned up shiny. So I did some research, I came up with no answers. Basically people told me to keep doing what I was doing and pray they hold together. Forget it, I needed more definite answers than that. Everyone I spoke to in the last 2 weeks, I had quizzed them on the topic, be it parts counter guy, old school domestic car racer, engineers, whatever. Everyone had either no answer or a theory.
I had my own. But still no answers. Something Jeff Hill at Turbotrix told me, was he had heard about a misdrilled oil passage.Crankwalk is a term given to excessive play between your crankshaft and thrust bearingwhich will put excessive side load or uneven load on your bearings and in time could break your crank position sensor. There are plenty of theories behind the root cause of this issue, from miscast crankshaftsdefective bearingsincorrect specifications or blocks causing the problem, everyone has a theory or hypothesis behind crankwalk.
Mitsubishi has several versions of redesigned crankshaft thrust bearings that are supposed to diminish the probability of crankwalk, but if you own a 7 bolt motor, you are best served by swapping in a earlier version of this 4G63 motor. It can be difficult to tell if a particular car is experiencing crankwalk.
Symptoms are usually indirect and difficult to diagnose until major damage occurs and can also lead to misdiagnosis from inexperienced mechanics or tuners. Ticking noises from the pulley side of your motor usually means that the crankshaft is moving laterally so much as to make contact and subsequently destroy your 4G63 crankshaft position sensor.
Unfortunately, if you are hearing this sound the crankshaft position sensor is in need to replacing, which in reality means that your motor should be swapped.
How To Check For Crankwalk
Failure to properly diagnose this symptom may lead some mechanics to simply replace your crankshaft position sensorwhich does not resolve the underlying issue in any manner but instead masks the problem until it ultimately fails again.
What should I do to check or prevent crankwalk? Measuring crankshaft play is relatively straightforward as long as you have the space and a proper feeler gauge as shown above. You will be measuring the play between your thrust bearing when using a prybar to gently move the crankshaft in a lateral motion. This can be accomplished by removing the oil pan and gently prying the flywheel towards the pulley side of the motor.
Make sure you do not damage the rear main seal housing, which is aluminum, not iron like your block. While robust and overbuilt for the boost it needed to run, manufacturing issues in the main thrust bearing and oil jets led to serious defects like crankwalk. This site uses Akismet to reduce spam. Learn how your comment data is processed. Friday, April 10, Sign in. Forgot your password? Get help. Password recovery. My Pro Street.
Like this: Like Loading P Mitsubishi 2. How to Donate A Car in California.Top definition. Movement of the crank out of stock specifications.
A "walking" crank necessitates an engine rebuild. Any car can crankwalk, but Mitsubishi Eclipses, Plymouth Lasers, and Eagle Talons with a 7-bolt motor are notorious for this problem. No recall was ever released as the problem was said to be isolated to a bad batch of cranks, which represented a fraction of the produced cars.
Various theories of why crankwalk occurs and what years are most suseptible exist, but none are proven. General consenus is poor oil flow is one cause, and later model years seem to suffer less. Contrary to popular opinion, any car can crankwalk; Manual, auto, import, domestic, turbo, manual, racecarbeater.
All have walked, and all have a chance of walking. My dsm crankwalked on me, but thankfully my dsm has broken down often enough to make me a real mechanic. Crank Walk unknown. When the crankshaft of a car has excessive lateral play.
An eclipse is not exactly like a Ferrarifor a Ferrari has no crank walk. Crankwalk unknown. Something that DSM drivers get when they become too cocky and decide to race a actuall import, like a honda or VW. It is a out of spec moving of the crankshaft perticaully in 7-bolt 4G63s side to side and WILL destroy your engine. Yo doggmeh clips got some crankwalk and that teg owned meh. The act of walking when one gets an unexpected chubby in a public place, such as at work, church, retirement homeChuck E Cheeseor any other establishment where having a stiffy is innappropriate, to relieve a passion in the pants.
Bob: Hey Carl, how are you doing this morning? Carl: Bob, don't talk to me while you have morning weiner Crank Walk drugs. You can tell homey is smoking meth by his crank walk. Donald J. Trump Up the Bum Blackfishing OneL Forums New posts Search forums.
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Thread starter beavis Start date Jul 14, Messages I am looking at buying an Evo 4 in the next couple of weeks. I have heard horror stories about issues with cranks. Could anyone tell me if this is true, if so what do I need to look out for when buying an Evo 4?
Any other issues to keep an eye open for? Thanks in advance Beavis. Agent david New Member. Messages 37 Location Aberdeen. You can check the engine if you're concerened. Just get the car off the ground, get a pry bar in behind the bottom pulley lever it in and out. You should use a DTI guage to measure the amount of movement.
Think the clearance should be 0. The max it should be is 0. Any more than that and walk away. I know its not easy to do on a car that you havent bought, the seller might not be keen lol.
There are no specific miles where the problem starts. It'll depend on how the car's been treated. Check the history for regular services and oil changes and that there are receipts for good quality oil. Obvioulsy the higher the mileage the higher the chances are of finding an engine that suffers from it because the engine in a high miler will be more worn and has probably had a few owners who will all have had a go at launching it from the lights in that drag race with a Clio Sport.
Try and get a fresh import with as little miles as possible. If its got an owner then check how he treats the car from starting cold. They should start it up with no pedal pressure and let it warm up for a couple of minutes before driving off and then let the engine temperature rise sufficiently before boosting. The best thing to do if you are really that worried about it is to buy a 5even though the 4's are nicer lol.
The EVO 4 or 5 - which is better and why? Country Bumpkin Track Warrior. Stay well clear of the Evo 1V, they chew up engines, normally replaced by the engine from the V1, which ultimately comes from a breaker. Points From Alone in the dark. Car Insignia SRI. IMO the V is the better car. Looks awesome. So the 5 would be better? What about a 4 with a 6 engine? Anyone know how these compare to a r32 GTR skyline?Posted by evileclipse98Jul 19, Featured Products from our Supporting Vendors.
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Jul 19, 1. Everyone I talk to says that they have a 99 so they aren't worried. Buy at ExtremePSI. Jul 19, 2. Crank walk is over rated, I had bought a used 99 motor and it had crank walk thank god i returned it right away. It still can happen in the 99's but i heard they have less chances then the Jul 19, 3. Since a 4g64 is essentially the same block as a 4g63, then yes it will bolt into a DSM chassis fine. Also, any part that will bolt to a 4g63 will bolt to a 4g Jul 19, 4.
Jul 19, 5. Jul 19, 6. The 7 bolt has a 4 piece Thrust bearing assembly that allows the thrust bearing to float and self align with the crankshaft. Any thrust bearing can fail. Jul 19, 7. Early '95's are the least to crankwalk since they had left over 1g 7bolts. And there is cases that are not reported.
FAQ : What is Crankwalk?
I do believe crankwalk is overrated, but 7bolts do crankwalk alot, its about you and your luck and i sure wasn't lucky. I also read a few times the '99 4g63 was as good as the Evo 4gPosted by evileclipse98Jul 19, Featured Products from our Supporting Vendors. Activity Feed DSMtuners. Join the Community! Chat with others, create a build thread, post questions and answers.
Get involved! Logging in will also remove many of the advertisements, along with this notice. Jul 19, 1. Everyone I talk to says that they have a 99 so they aren't worried. Buy at FealSuspensionStore. Jul 19, 2. Crank walk is over rated, I had bought a used 99 motor and it had crank walk thank god i returned it right away.
It still can happen in the 99's but i heard they have less chances then the Jul 19, 3. Since a 4g64 is essentially the same block as a 4g63, then yes it will bolt into a DSM chassis fine. Also, any part that will bolt to a 4g63 will bolt to a 4g Jul 19, 4. Jul 19, 5. Jul 19, 6. The 7 bolt has a 4 piece Thrust bearing assembly that allows the thrust bearing to float and self align with the crankshaft.
Any thrust bearing can fail. Jul 19, 7. Early '95's are the least to crankwalk since they had left over 1g 7bolts. And there is cases that are not reported. I do believe crankwalk is overrated, but 7bolts do crankwalk alot, its about you and your luck and i sure wasn't lucky. I also read a few times the '99 4g63 was as good as the Evo 4g From the mitsu techs ive talked to, most of them don't even know how to work on a dsm, yet alone they work on the EVOS.
Jul 19, 8. I was hoping something different. I can't believe I ended up with a 98 GSX to rebuild just to find out that more than likely it will crankwalk. I should have bought a rs or gs and built up the a. Now I am stuck with an expensive, broke down, piece of crap. Wow, I feel soooo lucky.