Has anyone ever come across a noise like this ? Haven't been able to narrow it down yet. L67 m90, there was an exhaust leak I fixed that, blower coupler seems good ran it with no belt still the same noise. Im down to lifters, injector, or rod. I'll take any suggestions though, oil is new and at the proper level
**I got no idea why the video won't attached I've tried it in the 3 options this site allows when you tap on the camera icon
[This message has been edited by jmac87tt (edited 02-16-2025).]
Has anyone ever come across a noise like this ? Haven't been able to narrow it down yet. L67 m90, there was an exhaust leak I fixed that, blower coupler seems good ran it with no belt still the same noise. Im down to lifters, injector, or rod. I'll take any suggestions though, oil is new and at the proper level
I got no idea why the video won't attached I've tried it in the 3 options this site allows when you tap on the camera icon
There's a "camera icon"? (I use a PC and don't see any icons.)
To embed a video here, you need to upload it to YouTube, copy the URL from the browser, and then insert the address (with no spaces) between [youtube] and [/youtube]
Let me know if that works I've never done a YouTube video either
That's pretty good for your first time. To embed the video, as mentioned earlier, use the browser's URL address for the video at YouTube. (Click EDIT on this post to see how I've done it.)
[This message has been edited by Patrick (edited 02-16-2025).]
Let me know if that works I've never done a YouTube video either
It's almost like a hissing sound that's consistent with the engine. Does the sound decrease after the engine fully warms up... or I should say, does the sound CHANGE when the engine fully warms up?
To me, it sounds like an exhaust leak...
Any chance you can record another video (just like this one), but be in the car and give the engine a little rev here and there (not crazy) just a little rev to see how it sounds with RPM changes?
Yea I could prob do another video tomorrow. The exhaust is very short I thought about just dropping it to see if the sound changes to eliminate it down to just the manifolds but there are no signs of leaks, black spots soot or burns etc. I found the collector leak by doing a smoke test but stopped at that. I don't believe it's a vac leak I have 18-20" vacuum at idle and that's where the noise is most prevent. Almost like something slapping
sounds kinda like spark knock but the worrying part is it sounds like the 2001 gtp my buddy had (3800 series 2 with the supercharger) which had a very similar sound until the trans blew up. you could try putting the clutch in and see what happens? edit: just realized its the same sound as the 88 Tangerine menace. its your getrag making that sound
[This message has been edited by cartercarbaficionado (edited 02-16-2025).]
sounds kinda like spark knock but the worrying part is it sounds like the 2001 gtp my buddy had (3800 series 2 with the supercharger) which had a very similar sound until the trans blew up. you could try putting the clutch in and see what happens? edit: just realized its the same sound as the 88 Tangerine menace. its your getrag making that sound
Like not enough clearance from the original machine work to perform the swap ? It spins over easily by hand
Like not enough clearance from the original machine work to perform the swap ? It spins over easily by hand
spark knock is technically called detonation which means the timing is wrong. you didnt specify if this was a new problem or not or if you retimed it recently
spark knock is technically called detonation which means the timing is wrong. you didnt specify if this was a new problem or not or if you retimed it recently
I'm aware of spark knock you mention the trans which I was trying to see where you came up with that
...you mention the trans which I was trying to see where you came up with that
He's probably referring to the infamous Getrag rattle. I don't know what tranny you have... but here's a video of that sound coming from my Formula. It only occurs when the clutch is released while in neutral. When the clutch is stepped in, the sound completely disappears.
He's probably referring to the infamous Getrag rattle. I don't know what tranny you have... but here's a video of that sound coming from my Formula. It only occurs when the clutch is released while in neutral. When the clutch is stepped in, the sound completely disappears.
there is another sound they can make if especially worn. it sounds like rod knock because of excessive clearance in the secondary shaft bearing
I'm aware of spark knock you mention the trans which I was trying to see where you came up with that
https://youtu.be/y_0buD8wPF0?si=5E_hwFFv5x-dY7hB this is my friends car i sold her. its a unknown condition transmission we swapped in and as soon as we put 50 miles on it it started this wonderful noise. i think we are going back to a 4 speed and not looking back when i can find a good one
https://youtu.be/y_0buD8wPF0?si=5E_hwFFv5x-dY7hB this is my friends car i sold her. its a unknown condition transmission we swapped in and as soon as we put 50 miles on it it started this wonderful noise. i think we are going back to a 4 speed and not looking back when i can find a good one
Wow that's wild ! Good to know about the trans but I do believe with the clutch pressed in there is no change I can confirm tonight.
I have a 4 speed on the shelf as well btw! I never found all that was needed to make the swap work so I went back with the 5 speed that was original to the car
Wow that's wild ! Good to know about the trans but I do believe with the clutch pressed in there is no change I can confirm tonight.
I have a 4 speed on the shelf as well btw! I never found all that was needed to make the swap work so I went back with the 5 speed that was original to the car
i might want that 4 speed if you arent more than 2 states over from washington. i hope its nothing serious with your engine though. mine sounds alot worse on video
i might want that 4 speed if you arent more than 2 states over from washington. i hope its nothing serious with your engine though. mine sounds alot worse on video
Ahh I see I'm on the east coast !
Here is a video from the inside of the car it sounds a lot quieter but does does the same sound with the clutch depressed. Clutch is new as well I should add
Originally posted by jmac87tt: Ahh I see I'm on the east coast !
Here is a video from the inside of the car it sounds a lot quieter but does does the same sound with the clutch depressed. Clutch is new as well I should add
i think you might just have the same awful trans noise i do. it didnt seem to change with rpm at all at least to my ears and seems to be constant. idk maybe someone else can hear a different noise?
You can always check the firewall (or front as they call it) exhaust manifold for leaks. It takes all the rain and moisture running off the decklid. It possibly has a crack or two. You can always check the redneck way. Turn off the lights in the garage, start the car, and operate the throttle manually from the throttle body while looking for flames at the exhaust manifolds.
[This message has been edited by IMSA GT (edited 02-18-2025).]
You can always check the firewall (or front as they call it) exhaust manifold for leaks. It takes all the rain and moisture running off the decklid. It possibly has a crack or two. You can always check the redneck way. Turn off the lights in the garage, start the car, and operate the throttle manually from the throttle body while looking for flames at the exhaust manifolds.
That's a great idea I like that ! I tried the plug the exhaust and use a smoke machine method prior and found the collector leaking slightly. I'll def give this a shot !
mine turned out to be the slave cylinder (new owner unhooked it and the horrible noise stopped. so some of the getrag death rattle are the slave cylinders leaking or sticking) so check that
To embed the video, as mentioned earlier, use the browser's URL address for the video at YouTube. (Click EDIT on this post to see how I've done it.)
