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-   -   what does a cracked flywheel sound like (https://67-72chevytrucks.com/vboard/showthread.php?t=245068)

crm318 06-12-2007 12:51 AM

what does a cracked flywheel sound like
 
i have been having a metal on metal contact sound coming from the flywheel area. its louder in the beginning of a gear and lightens up and then gets loud as it shifts into the next gear. is this a cracked flywheel sound?

CrashEd 06-12-2007 01:12 AM

Re: what does a cracked flywheel sound like
 
Pull the cover and make sure its not the torque converter bolts if there tight you should beable to look with a flashlight and see a crack around the crank.
Ed

bigtruck81 06-12-2007 04:32 PM

Re: what does a cracked flywheel sound like
 
a cracked flexplate sounds like a lower end knock, ive heard some that sounded like main bearings,others sounded like rods. TC bolts typically sound like rods.,

RUST 06-12-2007 07:16 PM

Re: what does a cracked flywheel sound like
 
I agree. Mine sounded like a rod knocking, so I got a crate 350 to replace a 305. After removal flexplate was cracked at crank bolts. Anyway, I got a 350.:metal:

crm318 06-13-2007 12:30 AM

Re: what does a cracked flywheel sound like
 
well i got under the truck and inspected it with a flashlight. i couldnt see any cracks, however it might be cracked around the crank and not the bolts.

RACINJASON22 06-13-2007 12:44 AM

Re: what does a cracked flywheel sound like
 
I agree, I have heard them sound just like a rod knocking. :(

Hope you get it figured out.

RJ22...:)

crm318 06-13-2007 01:21 PM

Re: what does a cracked flywheel sound like
 
it sounds like a dryer with a hand full of pennies. it is loudest at the beginning of each gear.

Mickey_D 06-13-2007 09:33 PM

Re: what does a cracked flywheel sound like
 
Are you sure it's the transmission? I've heard pebbles in the catalytic converter heat shield described as you have.

crm318 06-14-2007 01:20 AM

Re: what does a cracked flywheel sound like
 
i dont have any emissions stuff. my truck is a 72 cheyenne.

MylilBowTie 06-17-2007 09:57 PM

Re: what does a cracked flywheel sound like
 
Maybe broken vain(s) in the torque convertor?

mexgrhd68 06-18-2007 02:30 AM

Re: what does a cracked flywheel sound like
 
:agree: :agree:
Quote:

Originally Posted by RACINJASON22 (Post 2219727)
I agree, I have heard them sound just like a rod knocking. :(

Hope you get it figured out.

RJ22...:)


screamin_eagle 06-18-2007 03:20 PM

Re: what does a cracked flywheel sound like
 
had the same problem with my jeep thought it was carbon balls in the cat so i took my handy dandy angle grinder and removed it for some reason I couldnt find any wrench or socket that would fit the bolts. anyway got it put back together without the cat and still had the noise. pulled the trans one day to fix a leak got to looking around and found the crack.


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