75 135 broke exhaust man.....

[coolbikeguy]

hey guys i took the outer exhaust cover off and 2 bolts broke so i decided to take the inner exhaust cover off to be able to get vice grips on the snapped studs and apply a little heat. whan i took the covers off i found the exhaust manifold ?? is broken on the bottom... here are pics......

http://s74.photobucket.com/albums/i269/coolbikeguy/?action=view&current=135e001.jpg

http://s74.photobucket.com/albums/i269/coolbikeguy/?action=view&current=135e006.jpg

http://s74.photobucket.com/albums/i269/coolbikeguy/?action=view&current=135e005.jpg

http://s74.photobucket.com/albums/i269/coolbikeguy/?action=view&current=135e004.jpg

http://s74.photobucket.com/albums/i269/coolbikeguy/?action=view&current=135e003.jpg

1. i cant find this part in the parts diagrams ... im calling it the exhaust manifold .. is that correct ??
2. can you guys find a part # ? and what diagram were u able to find it in ??
3. can i just run it as is ?? ... it was running before and who knows how long that may have been broken.

i need to order a water pump and vernotherm parts but then i found this so i figured id ask about this first .... thanks guys, scott

 

[coolbikeguy]

Re: 75 135 broke exhaust man.....

im still not coming up with anything on parts diagrams ... uggghhh

 

[emdsapmgr]

Re: 75 135 broke exhaust man.....

The part that is broken on your block is the exhaust filler block. These always came factory installed on the bubble back engines. They are not shown on any parts diagrams for these early crossflows. Considered part of the factory block. You have a couple of ways to go: find an old junk block and buy it for the parts. The later 115 crossflow bubble backs parts lists do show a filler block kit which can be purchased. I'm not sure if it retrofits to these early 135's or not. The later kit is part number: 392000. The kit is a Bombardier special order, about $187. You should call the factory to see if these will work on your engine: 847-689-7090. Keep in mind that once you install a new filler block, that a machine shop has to mill (deck) the back of the block to make it completely flat to match the inner exhaust manifold.

 

[coolbikeguy]

Re: 75 135 broke exhaust man.....

thanks for the info ............. im not sure what im going to do now. im either going to run it the way it is ... or just be done fooling with it and move on completely. im deff not tearing the engine down to go to the machne shop for milling .... if i do that i might as well do a complete rebuild..... time to think a little bit ... thanks again, scott

 

[boobie]

Re: 75 135 broke exhaust man.....

If the filler blocks are missing on a cross V-4 you have a chance of burning a piston. Your choice.