What causes a random bent cam gear.

[g4ebguy90]

I have read alot of threads, but people just say to replace it, which I plan on doing.

I want to know why the intake cam gear on these cars bend. I drove this car for a while... One day at start up it made a small chirping noise, it contiuned through out the day. I always thought it was a acc. belt.

Well 2 weeks later it was driving me and my gf crazy so, I decided to investigate, found the PS belt rubbing, so I took it off. No fix...

Took of the cam cover and told my gf to crank it, bout 5 seconds later I ran to the front seat myself , screaming, turned off the car, all to the sight of my gf's WTF face.

The timing belt was moving back and fourth VERY close to the edge of the gear, I started it again briefly and noticed the intake cam gear was wobbling, I retorqued it and it still wobbles. So apprently it is bent in some way or another, I just don't no how. Car runs fine.

Any ideas? only thing I noticed was that the cam cover for the top seemed to rub a bit on the gear, but it's plastic I can't believe it would bend a hard metal gear.

 

[kidtsi]

No they were on, I took them off today for better inspection.



I had to take a dump so I was trying to hurry.

Same thing happened to mine dude, just replace the cam gear.

 

[g4ebguy90]

Same thing happened to mine dude, just replace the cam gear.

Well I will unless its the cam that's the problem, I'm going to pull off the gear and check for warpage, then check the cam gear mount for warpage and go from there. But I have to wait for a tool to remove the timing belt, the tensioner compressing tool.

 

[Lil' Shaun]

I drove with mine till i sold the truck.

 

[g4ebguy90]

That engine has only 30k on it. Internals have 30k.

 

[stukyl28]

I had to take a dump so I was trying to hurry.

Lol

that is weird tho did you place the gear on a flat surface to see how bent/ warped it is?

 

[importracr317]

A crowbar.

Subscribing for vids.

I was going to say "a random hammer blow" would cause a "random bent cam gear".

More likely, the cam gear wasn't properly tightened.

 

[XiKeiyaZI]

I had to take a dump so I was trying to hurry.

. Sold. This is my favorite thread of the day.

 

[Calan]

I had to take a dump so I was trying to hurry.

That's no excuse.

http://www.dsmtuners.com/forums/new...know-what-kind-intercooler.html#post152203269

(I always enjoy an opportunity to laugh at that again)

 

[g4ebguy90]

That's no excuse.

http://www.dsmtuners.com/forums/new...know-what-kind-intercooler.html#post152203269

(I always enjoy an opportunity to laugh at that again)

wtf.

 

[Boostinsideways]

I have no clue what caused it.

But I happend to me and ####ed my shit all up. Drop 3 valves, killed 2 pistons, bent both of the same piston's rods. Broke a camshaft, trashed the head, valve cover, basically the only thing that I saved was the block and crank.

You must be logged in to view this image or video.

And that was only the 2nd most catastrophic failure of a 4g63 I have seen. Have one block that exploded.

 

[2slow4now]

. Sold. This is my favorite thread of the day.

Thats just classic! The neighbor across the street watching and thinking WTF while he's filming his engine and pinching his azz cheeks together. It would look like he was humping his fender and filming.....weirdo pervert!

Ok back to buisness. The timing belt looked like it was used. I'm just bringing that up because maybe its stretched or something. If you crank it by hand does it do it at the exact same point of the cam gear or on the belt? Maybe turn it over by hand and mark the belt and the cam gear where it walks over. Then just see if it repeats the pattern.

Post before^^ Holy crap! Severe carnage.

 

[g4ebguy90]

Thats just classic! The neighbor across the street watching and thinking WTF while he's filming his engine and pinching his azz cheeks together. It would look like he was humping his fender and filming.....weirdo pervert!

Ok back to buisness. The timing belt looked like it was used. I'm just bringing that up because maybe its stretched or something. If you crank it by hand does it do it at the exact same point of the cam gear or on the belt? Maybe turn it over by hand and mark the belt and the cam gear where it walks over. Then just see if it repeats the pattern.

Post before^^ Holy crap! Severe carnage.

Wasnt that extreme. But jeez that cam gear is screwed. Man I hate 4g63's. Why god why. O drive a hyundai for 4 years, replace front brake pads, I own a mitsubishi eclipse for 5 days and spin a bearing at highway speed. I love these cars but these past 2 months have been brutal.

I will take the sparkys out, and try to see if it walks handcranking, idk if you noticed in the video, but I can deff tell its that intake cam gear/camshaft, idk whats going on.

 

[ed1380]

I have a bent can gear. It wobbles about 1/8"

 

[g4ebguy90]

I have a bent can gear. It wobbles about 1/8"

Does no one fix this or what....

 

[XiKeiyaZI]

Why would you risk 'fixing' it?

 

[Boostinsideways]

Does no one fix this or what....

I had no clue anything was wrong with the car. It just happened, and well, It literally broke the bolt out of the cam, Which in turn destroyed the entire engine.

You need to replace the cam gear, and possibly the cam.

 

[ed1380]

I'm doing it this weekend. I dont see the real danger in it, it's a DD and hasnt been over 4k rpm. I'm more worried about the lack of a timing cover.


There's no risk in fixing it. just a pain. it's half of a timing belt job which are never fun

 

[g4ebguy90]

I'm doing it this weekend. I dont see the real danger in it, it's a DD and hasnt been over 4k rpm. I'm more worried about the lack of a timing cover.


There's no risk in fixing it. just a pain. it's half of a timing belt job which are never fun

Timing belt seems more fun then removing them stubbern camshaft caps...

I should have titled this thread CRANKWALK? and show my stupid cam gear HAHA, everybody would hate me.

 

[XiKeiyaZI]

Zip-tie the Timing belt to the cam gears.
Large Crescent + 1 person holding it on the CAM.
Large Breaker Bar + Large Cheater Pipe + 1 person.
Turn in opposite directions.
POP! It's going to sound like you broke the center of the Planet in half.

Done. Cam is loose without losing time OR without breaking your camshaft. However.. Might as well change the timing belt anyhow.

 

[g4ebguy90]

yea but don;t u got to reset the auto tensioner.

 

[galantlvr34]

If you get the timing tool set from jays racing you will be good.

 

[XiKeiyaZI]

Depends on who you ask. I suggest - Yes.

 

[1991 awd talon]

here's the link to the cam gear and tensioner i got!

4g61t.org • View topic - Timing Belt Cam Tool***Tensioner Tool Now Available

i love this tool. haven't used it yet. but it very high quality! very precise!

 

[g4ebguy90]

here's the link to the cam gear and tensioner i got!

4g61t.org • View topic - Timing Belt Cam Tool***Tensioner Tool Now Available

i love this tool. haven't used it yet. but it very high quality! very precise!

That is the coolest thing, I have ever saw, in my life.

 

[ed1380]

or you can just count 16 teeth from cam gear to cam gear