Clutch rattle

[Duce714]

I have an 06 GT that I picked up used, I was told that it had been stroked, has hot rod cams and long tube haeders, x pipe And full aftermarket exhaust out the back. Sounds great! My question is for someone with the hot rod cams. When sitting at idle with the A/C on and in neutral with foot off of the clutch, the clutch makes a shaking/rattle sound. Push in on clutch and the rattle is gone. With A/C off in same configuration, there is no rattle. I was told it is because with A/C on RPMs drop slightly at idle causing the engine to shake more causing the clutch rattle. Nature of the beast I guess. Could the idle be bumped up slightly to correct this and if so would I loose the lope of the cams?

 

[stkjock]

idle can easily be raised in a tune adjustment, did you get a handheld tuner with the car, no you wouldn't lose the lope.

 

[Juice]

Its not the clutch, it is gear clatter from the trans. Mine did it with the stock 5 spd and v6. The new magnum xl does it with the coyote.
Its normal, turn up the radio!

 

[Duce714]

I Installed another Used TR3650 with low miles and it makes the same rattle. Might try to raise the idle and see if it helps. Or just run without the A/C.

 

[Anti]

Mine does it too, even with a new Tob, lightened flywheel, and exedy Mach 500 clutch.

 

[Juice]

That damn ATF we have to use is like diluted piss for viscosity. I bet a thicker oil would quite it down. My toploaders never made any rattle like that, they took gear lube!

 

[FredB66]

My Magnum XL rattles too. I still have a hard time believing that it's normal but I keep hearing that it is.

 

[Midlife Crises]

I’m using a McLeod Extreme single disc on a lightened steel flywheel with a stock throw out. It does not rattle but it is a bit stiff. My T56 magnum does not rattle ether. I can hear gear whine when the car is moving.

 

[JeremyH]

You guys saying you have rattle have you upgraded your motor mounts and trans mount?

 

[Juice]

You guys saying you have rattle have you upgraded your motor mounts and trans mount?

Yup.

 

[Anti]

I have the bmr poly engine mounts, but no tranny mount.

 

[Duce714]

Haven’t upgraded the mounts yet. Where did you get the mounts.

 

[JeremyH]

I had prothane then poly with upr k. I poly filled 80a my trans mount. I have no rattle or chatter. 6060 with mobil full syn atf and rxt.

 

[JeremyH]

https://www.s197forum.com/posts/2201562/

 

[Duce714]

I may try that poly kit. Where did you pick that up at?

 

[JeremyH]

https://www.suspension.com/diymmi

 

[Duce714]

Thanks!

 

[SalD]

I have a 2008 GT 4.6 L I just put the Hot Rod cams in and mine does it too. I am glad to see others experience this because I thought I may have to replace my clutch!

 

[Duce714]

Apparently nature of the beast!

 

[ShelbySteve]

I have a 2008 GT 4.6 L I just put the Hot Rod cams in and mine does it too. I am glad to see others experience this because I thought I may have to replace my clutch!

I have the hot rod cams and mine is doing it too. With only 20.5k miles I didn’t want to think it was the throw out bearing but I guess I’ll be getting poly mounts.