redlined for a little to long i guess

[supraGhost]

i was releasing some steam with a nice smoky burnout and i sat on my rev limiter for a few seconds (like 3 seconds serisousl) and now the motor ticks:3d_frown: i can only hear it when i have the throttle open.... like when im accelerating. when its idling, cruising, or decelerating at any rpms i cant hear it. but the more i open the throttle up, the louder it is.

it stills runs fine though. starts great, idles great, etc. but i havnt taken it over 3krpms since this happened. any ideas?

 

[IJ.]

How much Oil was in it?

 

[supraGhost]

i just changed the oil two weeks ago so im pretty sure its full but i will check again this afternoon

 

[shaeff]

You don't need to bounce it off the rev limiter to do a burnout. Once the tires break loose, it's easy because they get slimy. (street tires)

You should have broken them loose, then throttle on/off to keep the RPM up around4.5-5k max. Then you can steady it out and hold it in one spot.

 

[supraGhost]

You don't need to bounce it off the rev limiter to do a burnout. Once the tires break loose, it's easy because they get slimy. (street tires)

You should have broken them loose, then throttle on/off to keep the RPM up around4.5-5k max. Then you can steady it out and hold it in one spot.

yeah i know:3d_frown: it was dumb. i rarely redline my car and this is the first time i really hit the rev limiter. i usually short shift to save my motor. but the roads were cold and the tires spun easily and i was watching traffic. i looked down and i was like hmm... haha time to let off the brakes and go somewhere so i dont blow up.

 

[suprahero]

There are less expensive ways to blow off steam. What's done is done so I won't preach to you, but it sounds like the makings of a knock knock joke.

 

[supraGhost]

There are less expensive ways to blow off steam. What's done is done so I won't preach to you, but it sounds like the makings of a knock knock joke.

thank you.

any ideas? its just a little tap, almost like a clicking noise.

 

[jdub]

Check your oil like IJ said.

 

[03bamaGT]

Yea...check the oil.

What causes head ticks in Supra's...I know 4.6 Modulars have head ticks when there is insufficient cooling in the heads...especially number 8 cylinder area. Is it the same for the 7M and other Supra motors?

 

[jdub]

No - the 7M has a noisy valve train in general. Valve tick is usually incorrect valve clearance or the cam caps are not torqued down correctly (bad).

 

[03bamaGT]

Ahh...Thanks for explaining it.

 

[supraGhost]

i checked the oil and it is about 1/8th inch over the full line. is that an issue? i did think that was a big deal but you tell me.

 

[jdub]

Nope...in fact, it's a very good idea. Running a quart over the full mark on the dipstick is cheap insurance against uncovering the oil pump pick-up...an pump that suck air just for a second at high RPM is a good way to cause rod knock.

That's why we asked

Can you tell where on the motor the sound is coming from?
Might want to check the crank dampner bolt is torqued down...195 ft/lbs iirc.

 

[supraGhost]

Nope...in fact, it's a very good idea. Running a quart over the full mark on the dipstick is cheap insurance against uncovering the oil pump pick-up...an pump that suck air just for a second at high RPM is a good way to cause rod knock.

That's why we asked

Can you tell where on the motor the sound is coming from?
Might want to check the crank dampner bolt is torqued down...195 ft/lbs iirc.

195ft/lbs? wow lol. i dont think i have a torque wrench that powerful but i will check

where is the crank dampener bolt anyway

 

[williamb82]

sounds like rod knock to me. prolly sucked the oil pan dry during your stunt and nicked some bearings.

 

[jdub]

where is the crank dampener bolt anyway

The main crank pulley...the one with the timing index mark on it...the bolt in the middle
It's called a dampner.

Might want to listen to where exactly the ticking is coming from...a stethoscope would help.

sounds like rod knock to me. prolly sucked the oil pan dry during your stunt and nicked some bearings.

Not likely will an over full crankcase...especially for such a short time. Unless, you were doing donuts during the burnout.

 

[supraGhost]

sounds like rod knock to me. prolly sucked the oil pan dry during your stunt and nicked some bearings.

cant you hear rod knock during idle? or even at higher rpms when cruising? i can ONLY hear it when im accelerating.


and yeah the burnout was only a few seconds... the motor was at full operating temperature

 

[black89t]

the first stage of my rodknock i only heard it at light throttle between 2k to about 3k. other than that it never made a peep. when accelerating there was too much load on the bearing. but at light throttle it would somewhat float around making a knock knock. here is a vid of my first motor in my old car with what i would call the first stage of rodknock. listen closely at the very beginning. i thought it was so fast. LOL.

http://www.youtube.com/watch?v=05Q1LEheVRc

 

[jdub]

Yep...RP seems to be the loudest right around 2500 RPM.

 

[deabionni]

Might want to listen to where exactly the ticking is coming from...a stethoscope would help.

You can also use a hose, screwdriver, long extension, etc. as a stethoscope.

Try to pinpoint exactly where the noise is coming from.