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Alternator bolts snapping
- Thread starter unforgiven11B
- Start date
skinnypockets
Well-known member
Curtis, Is there any kind of brace or support on the back side of that alternator? I'm not familiar with that engine but it seems to me there should be more support than just those bolts.
My phone died and I lost your number so give me a call when you get time. Rich
My phone died and I lost your number so give me a call when you get time. Rich
One Eyed Gator
Well-known member
Curtis have you tried stainless bolts? They are softer tend bend some before they break. My old caddy was breaking grade 8 bolts went to a softer bolt and it would at least bend before it broke. also make sure the mount doesn't have a bur or something not allowing the mount to sit flush.
Do you know what spacing the accessories are - Truck, Fbody or Y-body
Kind of looks like truck spacing, but your pump has different inlet and outlet locations. If it is, one option would be to set it up like stock truck.
Or look at the https://sites.google.com/site/sloppywiki/everything-ls/ls1-style-low-mount-alternator
I have done 4 motors this way and never had a problem. Also made a brace from head to back of F-body alt. mount.
If it is corvette/y-body spacing Smuggler on here sells the bolt and alternator kit. It is cheap if you already have the alt.
Do you know what spacing the accessories are - Truck, Fbody or Y-body
Kind of looks like truck spacing, but your pump has different inlet and outlet locations. If it is, one option would be to set it up like stock truck.
Or look at the https://sites.google.com/site/sloppywiki/everything-ls/ls1-style-low-mount-alternator
I have done 4 motors this way and never had a problem. Also made a brace from head to back of F-body alt. mount.
If it is corvette/y-body spacing Smuggler on here sells the bolt and alternator kit. It is cheap if you already have the alt.
ringneck
Active member
Common issue with PCM alt. bracket bolts.
Fixed mine (350 hrs.ago) . Only problem I ever had.
My bracket had a spare hole near the fuel control cell.
Surprised to find an UNTAPPED corresponding hole behind it into the aluminum head .
Tapped head, installed new bolt, problem solved.
Now I've got four bolts holding the alternator and it no longer has the leverage to stress /break the original three.
Sorry I didn't post my fix sooner. Hopefully others may consider this application as a preventative measure.
Fixed mine (350 hrs.ago) . Only problem I ever had.
My bracket had a spare hole near the fuel control cell.
Surprised to find an UNTAPPED corresponding hole behind it into the aluminum head .
Tapped head, installed new bolt, problem solved.
Now I've got four bolts holding the alternator and it no longer has the leverage to stress /break the original three.
Sorry I didn't post my fix sooner. Hopefully others may consider this application as a preventative measure.