SoCal Jet Boats
Tech Talk => Engine Mechanical / Electrical => Topic started by: Tio Pancho on June 22, 2011, 09:03:40 PM
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When I put the bolts throught the front mounting plate into the block they seem a little loose. The threads look a little flat inside the hole. The bolts are 3/8" which I think is right. I ran a chaser through, but it didn't do anything cuz there is no material to reshape. Have not tried the rear plate because it is still on the engine stand. What can I do?
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When I put the bolts throught the front mounting plate into the block they seem a little loose. The threads look a little flat inside the hole. The bolts are 3/8" which I think is right. I ran a chaser through, but it didn't do anything cuz there is no material to reshape. Have not tried the rear plate because it is still on the engine stand. What can I do?
im guessing drill and helicoil/timesert them? is it all 4?
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Yeah its all 4. The block is cast right? Can you drill/helicoil it; if so will it hold up to the task?
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When I put the bolts throught the front mounting plate into the block they seem a little loose. The threads look a little flat inside the hole. The bolts are 3/8" which I think is right. I ran a chaser through, but it didn't do anything cuz there is no material to reshape. Have not tried the rear plate because it is still on the engine stand. What can I do?
The front plate bolts on a fo fi fo Bo ty should be 7/16", not 3/8" give that a shot.... ;)
Hope all is well.
GT
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Doh! :banghead: That would explain a lot. I will give it a shot tomorrow.
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GT is exactly right. the 4 lower bolt holes on BBC are 7/16-14 and rear plate (or bell housing) are 3/8-16
and yes, they can be heli-coiled if necessary. but if at all possible try to find a Time-sert instead, they are much stronger.