The Top DSM Community on the Web

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. Log in to remove most ads.

Please Support Fuel Injector Clinic
Please Support Rix Racing

1G 93 Talon new harmonic balancer signs of crankwalk?

This site may earn a commission from merchant
affiliate links, including eBay, Amazon, and others.

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

AceMemphis

Probationary Member
4
0
Sep 19, 2014
victoria, BC_Canada
So Hi.
I'm new. Looking to fall in love with an Eagle Talon.

Found this car online, and lets be frank. I know very little about cars but HEY!... Gotta learn somewhere.
SO. Here is my question to you.

1993 DSM FWD. New Alternator, new Battery, new rad and hoses, new water pump and timing belt, new clutch save AND... new Harmonic Balancer. Are these signs that this car is toast?

I've done a bit of research and I've come to know that the 90-91 years had six-bolt engines while the 95+ had the seven-bolt engines. This 93 leaves me in the 92-94 range of 'who the f*** knows'.
My initial plan was to inspect the car myself and see if I can get a look at the oil pan but then I remembered "what the f*** do I know". I really want a 90-91 year, but most of those cars have been snatched up, or simply aren't in abundance on Vancouver Island, Cananda.

So gents, I put it to you.
Are there signs of crankwalk? Is there a way to tell?
And any other advice for a novice looking to nick a powerful, reliable, and cheap car?
or perhaps, questions for myself?
 
LOL sounds like its a good car to get if it has had all of those parts changed. can the previous owner prove he did all of this to the car if so how long ago was it done, if recently then snatch it up. seems that he knew what he was doing and wanted the car to last a long time.

also you can always six bolt swap any of the dsms that came with a seven bolt its not that difficult just find a six bolt for sale, even one that is blown and just go all out if this is truly what you want to do is go fast and be reliable. its a good idea to keep a spare engine anyway for these cars with how we treat them.

i dont think there is another car out there that would take the abuse we give our dsms. i mean seriously we have people running into the 9s with stock blocks! thats just insane, considering there are so many cars that people litterly have to upgrade their block to handle enough power. i always doubted a dsm untill i started doing research on them (i was a mustang guy before dsm and im not going back)

LOL sorry for the little rant haha
 
7 bolts arent unreliable unless they have improper clearances or cranks that are somehow junk. Especially revised 7 bolts. As long as you disable the whole "push the clutch in to start the car" thing, it'll be fine. And also if you're running a reasonable clutch for your setup.
 
7 bolts arent unreliable unless they have improper clearances or cranks that are somehow junk. Especially revised 7 bolts. As long as you disable the whole "push the clutch in to start the car" thing, it'll be fine. And also if you're running a reasonable clutch for your setup.
What does the clutch switch have to do with the reliabilityof the engine?
 
What does the clutch switch have to do with the reliabilityof the engine?
If you have to press the clutch in to start the car, you're putting leverage on the thrust bearings when they have no oil pressure. Thus wearing them out much more quickly, even more so the more thrust load the clutch puts on the crank. Thus why people disable that.
 
Can agree, but there is still enough oil film around the bearing to keep it lubed until pressure builds up, if the motor is used daily and is allowed to start in a normal idle situation.

Now, if the motor isn't being run for months, or one jumps on the gas immediately after it catches to wind the thing up to red line, then I can see doing the clutch disable.
 
Hmm, maybe I should have made myself a bit more... Direct.

What I am truly wanting to know is "What are the signs of crankwalk?"
And secondarily "Why would you need to replace a Harmonic Balancer?"

Also, the car in question had a new clutch slave cylinder installed.
Not sure if that's what you were getting at, Bmxfelon.
 
Hmm, maybe I should have made myself a bit more... Direct.

What I am truly wanting to know is "What are the signs of crankwalk?"
And secondarily "Why would you need to replace a Harmonic Balancer?"

Also, the car in question had a new clutch slave cylinder installed.
Not sure if that's what you were getting at, Bmxfelon.

The car would have a new balancer installed because they get old and wear out, therefor a new one was installed. The slave is the same way, they wear out. You are overthinking this.
 
They arent real balancers, they're dampers. And not all that great of dampers, its just a big rubber ring basically. The rubber rots, which is why they get replaced.

The signs of crankwalk are the crank sensor plate either hitting the timing belt or the sensor itself. There can also be clutch engagement issues, although most of the time this is due to either misadjustment or the pedal assembly itself being tweaked (1g pedal assemblies suck) The crank sensor issues only apply to 7 bolt cars, as 6 bolts dont usually have crank sensors.

Also the trigger plate can warp, so if it hits the sensor or timing belt check to make sure its not warped first before jumping to conclusions.
 
In general, ANY engine - either gas or diesel - can crankwalk. Not just the 7bolt, 4G63 motor by itself.

Even 6 bolt, 4G63 motors can crankwalk if highly abused.

They can range from small lawnmower/motorcycle types up to huge, piston driven type of either the in-line variety, or the "V" configuration.

Any ottoman based motor that has an eccentric crank, connecting rod and piston that is mounted on the connecting rod that uses reciprocated, back and forth motion to create a rotational motion, ARE prone to crankwalk.

The cause is by lateral pressure on the crank, mainly from the pressure plate in the clutch assembly pushing on the flywheel (and strong clutch pressure plates are notorious for this since it's applying great amount of lateral pressure on the disk), making the thrust bearings to wear allowing lateral, back and forth, play on the crank.

I've seen Big block V8's suffer with crankwalk due to the same thing - wear on thrust bearings.

Automatic vehicles are more immune to crankwalk since this lateral pressure is hardly non existent. Thus you automatic owners are free of this issue.

Why harmonic balancers needs to be replace for two things: 1-the timing marks are located on the outer steel of the balancer where if that outer steel begins to slide some, you''ll never get a correct reading using a timing light, and, 2- if the rubber begins to separate from the inner steel, the belt driven accessories are affected with belts slipping off their respective belt driven devices.
 
Support Vendors who Support the DSM Community
Boosted Fabrication ECM Tuning ExtremePSI Fuel Injector Clinic Innovation Products Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications MyMitsubishiStore.com RixRacing RockAuto RTM Racing STM Tuned

Latest posts

Build Thread Updates

Vendor Updates

Latest Classifieds

Back
Top