jt1 Posted July 20, 2007 Share Posted July 20, 2007 Everytime I pull the motor or trans out of my car, I find a cracked bellhousing. This current one is the 4th. I previously blamed it on the block, but this time it's a different block, and I had the bellhousing surfaced and wet magged for cracks, and indicated it true to the crank within 0.005" TIR. It doesn't really seem to hurt anything, but it can't be good for the long term. I'm using the GM 3858403 bellhousing, and all the cracks have been in an area not supported by the block, i.e. below the crank centerline. Anybody got any idea what causes this, and how to fix it? It's getting harder and harder to find these in the local junkyards. John Quote Link to comment Share on other sites More sharing options...
ron adams Posted July 20, 2007 Share Posted July 20, 2007 are you running solid motor and transmission mounts? have you checked for an alignment issue? Quote Link to comment Share on other sites More sharing options...
DrSideways Posted July 20, 2007 Share Posted July 20, 2007 Everytime I pull the motor or trans out of my car, I find a cracked bellhousing. This current one is the 4th. I previously blamed it on the block, but this time it's a different block, and I had the bellhousing surfaced and wet magged for cracks, and indicated it true to the crank within 0.005" TIR. It doesn't really seem to hurt anything, but it can't be good for the long term. I'm using the GM 3858403 bellhousing, and all the cracks have been in an area not supported by the block, i.e. below the crank centerline. Anybody got any idea what causes this, and how to fix it? It's getting harder and harder to find these in the local junkyards. John Just get a Lakewood. Alan Quote Link to comment Share on other sites More sharing options...
jt1 Posted July 21, 2007 Author Share Posted July 21, 2007 Ron- The engine is on the 70's GM rubber truck mounts, and the trans in on the generic rubber 350 trans mount. No alignment issues that I can detect. Alan- The lakewood does not have teh liTen3ss. The GM one is 8 #'s. jt Quote Link to comment Share on other sites More sharing options...
Pop N Wood Posted July 21, 2007 Share Posted July 21, 2007 Did you check the run out? http://go.mrgasket.com/pdf/bellhousing_align_procedure.pdf Quote Link to comment Share on other sites More sharing options...
DrSideways Posted July 21, 2007 Share Posted July 21, 2007 Ron- The engine is on the 70's GM rubber truck mounts, and the trans in on the generic rubber 350 trans mount. No alignment issues that I can detect. Alan- The lakewood does not have teh liTen3ss. The GM one is 8 #'s. jt Well pooh. You indicated the alignment was within .005" so maybe polishing the whole thing to get rid of any stress risers. If it happens after that stop drill the end of the crack. Does the crack happen at the same place every time? Of course if you went with a Jerico 5 speed there should be a Lakewood housing for that.... nothing but $$$ and damn cool noise. Alan Quote Link to comment Share on other sites More sharing options...
jt1 Posted July 22, 2007 Author Share Posted July 22, 2007 The cracks aren't in exactly the same place, but they all originate in the lower right hand quadrant, usually somewhere below the starter bulge. Polishing the whole bellhousing sounds like a lot of work. I'm eyeing a Tilton if the visa will stand it. jt Quote Link to comment Share on other sites More sharing options...
TitaniumZ Posted July 23, 2007 Share Posted July 23, 2007 It's probably because your candy a** lifts off the gas so much!All the torque is supposed to come from the other direction sissy pants.See Ya Friday. Quote Link to comment Share on other sites More sharing options...
jt1 Posted July 23, 2007 Author Share Posted July 23, 2007 THANK YOU RODDY for your valuable input!!!!!! jt Quote Link to comment Share on other sites More sharing options...
LaFlacaLoca67 Posted April 10, 2020 Share Posted April 10, 2020 I need to know if the bell housing can be fixed with epoxy and is it safe to drive Quote Link to comment Share on other sites More sharing options...
LaFlacaLoca67 Posted April 10, 2020 Share Posted April 10, 2020 8 minutes ago, LaFlacaLoca67 said: I need to know if the bell housing can be fixed with epoxy and is it safe to drive Quote Link to comment Share on other sites More sharing options...
NewZed Posted April 10, 2020 Share Posted April 10, 2020 Describe the engine. Post pictures. Start a new thread. This one is very old and looks to be about Chevy's. Quote Link to comment Share on other sites More sharing options...
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