My supra needs your help!

[87soup]

I have a "ge" with about 90K mi.

When the car hits 2-3K RPM it makes a strange noise, kinda like a fast rapid pinging. It stops after about 3K. I thought it had to do with my oil so i changed it to Castrol syntec 5w-50 along with some valve dr. It still does it... I also noticed that there is a little oil arround the PVC pipe (that metal T shaped pipe) on the back of the block.

What could this noise be?

[mk3some]

does it only make the noise while driving or can you be in park and just rev it out to get the same noise?

[87soup]

does it only make the noise while driving or can you be in park and just rev it out to get the same noise?

It does it in parked also.

[mk3some]

every single time you are driving within those rpm it makes the noise? and also if you keep the rpm's at the point where it makes the noise will it go away eventually?

[87soup]

every single time you are driving within those rpm it makes the noise? and also if you keep the rpm's at the point where it makes the noise will it go away eventually?


Every time, and all the time... it doesnt go away.:icon_frow

[Phantom]

I am just taking a guess at this, but when you rev your engine listen for where the engine is coming from. If it is near the front, then when you rev it and get that noise check the distributor for vibrations. I don't know, but you might have the same problem I am working with. When it idles it'll be okay but when I rev it the distributor makes a vibration that I can feel and the knocking noise is around there.

I am just guessing on this and I wish that it helps out.

[NDBoost]

IBRodKnock

We seriously need to create a user BHG and RodKnock and have them post in the thread when its been determined what the person has.

[Phantom]

And what type of gas are you putting in there? Since you are in Phoenix and it is summer time, if you are using anything less than the ninety-one octane that might be just it.

[87soup]

The noise is coming from inside the block, and its pretty load.

[87soup]

And what type of gas are you putting in there? Since you are in Phoenix and it is summer time, if you are using anything less than the ninety-one octane that might be just it.

87:cry:

[87soup]

RodKnock


That is what im affraid of... I have read the rod knock thread and it sounds like my problem... That is a big hastle i am trying to avoid, if i have to open the engine it will cost a lot! I dont know if i want to spend anymore money on my 7mge if it is rod knock i might as well do the 7mgte swap.... Right?:icon_conf

[SupraMario]

^^ yep.
only thing I could think of was the gas, but they said that already.

[NDBoost]

minimum (not recommended) you can do on a bottom end is replace the all the bearings. Given if the RK isnt that bad yet and hasnt scored the crank or rods.

If everythings still within spec just put new bearings in. a weekends worth of work. and ilike $200-$300

[Yellow 13]

I had the same problem running 87. When I switched to 91 and a heavier oil it went away.

I took the engine apart later on and didnt see anything wrong with any of the lower end bearings.

[jazzsaxman1988]

Ouch... hearing that anyone has rodknock is painful... Good luck man.

[87soup]

Thank you guy's... I will be doing another oil change this weekend and i wont think twice about getting 91 gas!

[Facime]

It was mentioned today at the portland meet that alot of people mistake harmonic dampener noise for rod knock. I believe there is a thread here somewhere about it, but as I understand it, sometimes while doing timing belt replacements the harmonic balancer does not get torqued back on properly because its some insane torque spec. Over time the key begins to widen out the keyway on the front of the crank.

The good news is if thats your problem you can save an expensive rebuild...tha bad news is if its gotten so bad that its making alot of noise, its likely that the keyway on the crank is damaged and you could have to replace the crankshaft anways.

I have to admit I dont know how to check for this problem, but maybe someone else can shed some light

[cjsupra90]

most likely a rod knock.

The fuel octane or small lack there of should not cause detonation when the engine is under no load. If detonation is going to accure, its only most likely going to accure when torque is at its highest and the engine is under heavy load.

Yes the ballancer issue is a small possibility, but all that I have see with this issue make noise at all different RPM ranges and the noise was clearly in the front of the motor and you could easily tell that it was external.

[jazzsaxman1988]

I have to agree with CJ- If it was the balancer, you'd be able to distinguish that from rod knock. But who knows- that might just be opinion.

[fiyota]

balancer noise isn't a pinging really, it sounds more like a tapping... like metal on metal, and not hollow... I had mine retorqued and the problem went away, at the time didnt know that it could take out my crank, but as soon as I heard the noise I looked for the culprit... torqued it down and no more noise... guess you could always try to retorque it and see if the noise goes away...

[Fuzz420]

If its rodknock, dump a bottle of lucas motor oil stabalizer in

[supramacist]

That is what im affraid of... I have read the rod knock thread and it sounds like my problem... That is a big hastle i am trying to avoid, if i have to open the engine it will cost a lot! I dont know if i want to spend anymore money on my 7mge if it is rod knock i might as well do the 7mgte swap.... Right?:icon_conf
Im still wondering why I ever left the Nissan fold.

[supramacist]

You gotta love a supra. Or there is no sense in owning one.

[87soup]

You gotta love a supra. Or there is no sense in owning one.


Unlike a lot of people this is my original car of choise, i went out of my way to get a supra and i would not settle for less.... Most people get the car from a hand-me down and later realize its potential.

I started out with the MKII, and now i own my second supra, the MKIII!

Oh yah i did the whole MR2 thing too.... 87 supercharged go cart!
It was awsome till I hit a tree:icon_cry:

[Supranforever]

<------- had the same problem with the tapping noise myself. Re-torqued Balancer, fixed it.

Also, I searched out the Supra myself, Wouldn't own anything but a Supra now. :) Picked my first one up when I was 14, worked on it for 2 years and totalled it shortly after, I'm much more careful with the ones I have now. :icon_bigg You learn alot building one/ tearing it down after you wreck it.

[SupraDerk]

Searched mine out also. I ate only Ramen noodles and drank water, rode a bike to and from school (college) and took on odd jobs to save up enough money for this beyotch. Took me about 6 months, but I finally found one and i haven't looked back since!

[supramacist]

[QUOTE=Supranforever]<------- had the same problem with the tapping noise myself. Re-torqued Balancer, fixed it.

There you go this seems to me like maybe a golden nugget of advice. I'm also glad that you are happy with your supra. I wasn't knocking them I was saying I'd like to have a little of the best of both worlds is all. Just my opinion, there's a reason it's free.
Fuzz's advice with the lucas was good as well, If you want to sell the car. LOL fuzz. wtf? j/k

[Jervis Mcstabby]

If its rodknock, dump a bottle of lucas motor oil stabalizer in
and for heavier oil, you can try some valvoline premium blue. It's for deisel, but it's worked great for me and my bro. Now if only I get my N/A's electical system on the same page of quality...

[Fuzz420]

[QUOTE=Supranforever]<------- had the same problem with the tapping noise myself. Re-torqued Balancer, fixed it.

There you go this seems to me like maybe a golden nugget of advice. I'm also glad that you are happy with your supra. I wasn't knocking them I was saying I'd like to have a little of the best of both worlds is all. Just my opinion, there's a reason it's free.
Fuzz's advice with the lucas was good as well, If you want to sell the car. LOL fuzz. wtf? j/k

I put 25k Strong hard miles on my motor changing il every 3k miles using lucas the whole time at the time i was averaging close to 1000 miles a week.When i think back i dont think the motor would have lasted as long as did.But for 10 bucks a bottle it diffenetly was worth a try.Plus the old redneck guys would be like " runa a bottle of lucas" i never got tired of that one :lol:


and for heavier oil, you can try some valvoline premium blue. It's for deisel, but it's worked great for me and my bro. Now if only I get my N/A's electical system on the same page of quality...
If i knew about it then i would have tried it. But lucas really seemed to help prolong the ultimate end of my motor.

[87soup]

Ouch, today comming home from work it was really load! It sounds like it is coming from the first or second cylinder from the front...

Yah im going to try that Lucas stuff with the oil change this friday... What do you think of the Syn power by Valvoline- 20w-50?

[Jervis Mcstabby]

Ouch, today comming home from work it was really load! It sounds like it is coming from the first or second cylinder from the front...

Yah im going to try that Lucas stuff with the oil change this friday... What do you think of the Syn power by Valvoline- 20w-50?
I'm running mine in 105-110degree weather, and so far I've never needed a oil that heavy. The premium blue is 15w-40, and I haven't had any wear problems with it. For Phoenix, 5w-50 seems like it would be too light of an oil for the temperature. (I used to live in Tempe). Out there, at higher revs, the engine heat (coupled with outside temps) is usually too much for 5w to maintain lubrication. 10w and higher operates better in hot climates, but what I would suggest is to at least start at around 15w. If it doesn't improve at 15, then you should probably try the 20w, just to be sure. I'd also suggest carpooling or granny driving until friday!:biggrinki

[supramacist]

[QUOTE=Fuzz420][QUOTE=supramacist]

I put 25k Strong hard miles on my motor changing il every 3k miles using lucas the whole time at the time i was averaging close to 1000 miles a week.When i think back i dont think the motor would have lasted as long as did.But for 10 bucks a bottle it diffenetly was worth a try.Plus the old redneck guys would be like " runa a bottle of lucas" i never got tired of that one :lol:


Na dude I feel you Im a lucas fan, I love there products. I have known guys to just fill the ride up with lucas and keep on going. But that shit won't keep it running forever. It should get you through till you can get to it yourself or to a shop.