Alright guys. I think I narrowed it down today. I was driving around, went to 2 garages (I get off at 5, and most close by then) and got some ideas. The one garage told me he had to take my car apart and find what was wrong, at that point I left that one and said goodbye. The 2nd garage was closer and told me its coming from the timing belt and pully tensioner making noise. So then I went to Advance Auto to get some prices on timing belts and pulleys and to also talk to a guy I used to work with there at a different AA. When me and him both went outside took look at the motor, I noticed something way outta wack for the first time. I told my friend about how the last garage said it was something to do with the timing belt. So we we're looking down there with the motor running and saw the crank pully, the one with the 3 belts, VIBRATING at idle, a decent amount too! But when you rev it up, it "balanced" itself out and the noise goes away for the most part. That would explain why the noise is louder underneath and why I can feel that vibration all the way in my shift knob. Because that vibration is going thru the crank into the tranny. Right? So anyways my friend told me the harmonic balancer (do Supras have that?) is either fooked up, or the crank inside is bent making it vibrate like that. And if it is bent, he said its scarring all the bottom end parts with it. Does this make sense to you guys? I tried to explain it the best I can. If you have question feel free to ask me. I really wanna figure this out and see if its a major problem. Any advice? Something else to look for? :1zhelp:
Alright, so it's not rod knock, but get this!
- Thread starter Alpha WereFox
- Start date
your crank pulley could be chewed up inside, if you look at Wills(s383memeber1) build thread youll see what i mean. Pull the pulley off and make sure its ok. Its not THAT hard to get off. Do that and whatever is wrong should become apparent
Do 7mge's have harmonic balancers? three people told me its that. if so where can i get one and about how much? advance auto cant get one.
don't know if this helps, but i recently rebuilt my motor because of #6 rod knock. Before the rebuild, my mechanic and i noticed pulley wobble as well. We tore everything apart and discovered that the key-way on the harmonic balancer was all chewed up, so was the crank snout where it slips onto. I ended up replacing both the crank & balancer pulley as well as a new woodruff key. (and of course the rod bearings & everything else involved with a rebuild) Pulley spins great and wobble-free! hope that gives some insight to your issue & good luck.
Thanks for the info, not something I wanted to hear. I hope mines not that bad but it probably is. :icon_mad:
alphawerefox;1043226 said:
The front pully is the harmonic damper on our cars, it's normally done up to "FT" (195 ft/lbs) and is a slight press fit, the Key and Keyway are only to locate it so #1 TDC timing mark is correct.
If the Bolt is loose the damper shuffles backward and forwards each time you accelerate or back off wearing the Key and keyway this in turn opens up the hole and wears the crank snout removing the press fit so even if you install a new damper and key and tighten it to 195 ft/lbs chances are it will just happen again.
You now need (most likely) a new (or remanned) crankshaft, new crank pulley, new timing cog, and new keys for them. Might as well just rebuild the whole thing or get a new engine, depending on how deep you want to get into this.
read wills build thread like i said. I believe shaeff fixed it with JB weld or something like that. heres a link. may have to read a few pages. Better get it off to at least check it out right away though
http://www.supramania.com/forums/showthread.php?t=29149
http://www.supramania.com/forums/showthread.php?t=29149
Well my Supra is back on the road. My sisters boyfriend lives near a guy with a Supra and I got a crank bolt off him. Only crappy part is my crank bolt keeps coming loose so I'm constantly checking it and tightening it. Oh well I'll figure something out maybe. :runaway:
You mean well, but no one really listens to old people... So here's a young person. Quit being a noob, fix the problem. This does not even qualify as a band aid.
Time for a rebuild, my friend.
Time for a rebuild, my friend.
I had one here that had been "repaired" using DevconA Ti Epoxy......
Took me half a day and EVERY tool I own to remove it totally trashing the front of the motor. <shaking head at some of the morons that work on these cars>
Took me half a day and EVERY tool I own to remove it totally trashing the front of the motor. <shaking head at some of the morons that work on these cars>
Cuel: Yep the shit does NOT let go!
I destroyed two pullers and ended up using the Oxy Torch and 2 prybars after trying everything I could think of.
I destroyed two pullers and ended up using the Oxy Torch and 2 prybars after trying everything I could think of.