SPONSORED LINKS

1985 Chevy Blazer flywheel

Tiny
ZEECUE48
  • MEMBER
  • 1985 CHEVROLET BLAZER
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 100,000 MILES
After getting the truck running again it has gone thru 2 flywheels. There are fractures from the center outward. The transmission has been rebuilt and the starter has been replaced. Is the starter causing this?
Friday, July 24th, 2009 AT 6:56 PM

8 Replies

Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
To help cut down on confusion, you have a flexplate, not a flywheel.

Next, could you explain where the cracks are?
Are they starting at the center hole and radiating out? Or are they starting at the bolt holes?
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Friday, July 24th, 2009 AT 7:10 PM
Tiny
ZEECUE48
  • MEMBER
  • 5 POSTS
They start at the bolt holes - this time though it made a crack that went all around the bolts in a circle - that section is completely separated from the flexplate
Was this
answer
helpful?
Yes
No
Monday, July 27th, 2009 AT 6:23 PM
Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
I've never seen a car eat two flexplates before.

The replacements, does the center hole fit snugly on the end of the crankshaft?
Was this
answer
helpful?
Yes
No
Monday, July 27th, 2009 AT 6:45 PM
Tiny
ZEECUE48
  • MEMBER
  • 5 POSTS
Yeah - i've seemed to stump everyone I know with this problem - it sits perfectly on the shaft, even used new bolts this last time
Was this
answer
helpful?
Yes
No
Monday, July 27th, 2009 AT 6:50 PM
Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
When you have the nose of the torque converter bottomed out in the crank shaft, and then you tighten up the bolts, is the flexplate bowing? Or is it still flat.

I'm wanting to make sure you are not putting it on backwards. Or that it's not a problem with the new torque converter after you had the trans rebuilt.
SPONSORED LINKS
Was this
answer
helpful?
Yes
No
Monday, July 27th, 2009 AT 7:09 PM
Tiny
ZEECUE48
  • MEMBER
  • 5 POSTS
The flexplate is not bowing - it's flat - - and its not backwards, its facing the right direction - - could it be the starter needs to be shimmed more?
Was this
answer
helpful?
Yes
No
Tuesday, July 28th, 2009 AT 6:38 PM
Tiny
BUDDYCRAIGG
  • MECHANIC
  • 2,262 POSTS
You can try it, but don't think it would matter.
This is my thinking process. The torque conver is bolted closer to the ring gear.
And the snout is supported in the back of the crank shaft.

So the converter would keep any pressure from the starter from pushing at the center.

And normally if you have the starter too close to the ring gear, it makes one hell of a noise.

I see you have a ballanced flex plate, but I think you would have known if you had it on wrong.

The only thing I can speculate is that you got the bolts too tight.
Was this
answer
helpful?
Yes
No
Tuesday, July 28th, 2009 AT 7:02 PM
Tiny
ZEECUE48
  • MEMBER
  • 5 POSTS
Well - I put on #3 and so far so good - I used a different torque wrench this time to make sure I wasnt putting too much torque - hope it works - thx for you help
Was this
answer
helpful?
Yes
No
Wednesday, July 29th, 2009 AT 6:35 PM

Please login or register to post a reply.

Related Flywheel Replace/Remove Content

Flywheel Replacement
GUIDE
Flywheel Replacement
An engine flywheel is used to couple the engine to the transmission while holding the clutch assembly. When replacing a flywheel the transmission and clutch must be removed...
VIEW MORE

Sponsored links