342 ?

[Roofer Dude]

Jack shaft or 3rd and 4th bearing ? Or ?????

 

[Brian Montgomery]

All the above!!!!

 

[Roofer Dude]

All the above!!!!

Never seen both , but I don't guess it would hurt.

 

[Brian Montgomery]

The 4th bearing will protect the crank from breakage. The J/S will allow you to keep the extra heat from the clutch going back into the engine, and also running like a 2:1 primary ratio will lower the clutch engagement which will keep the clutch cooler and make it last longer. Also if your engine has a 1'' crank journal you get the belt driver for a 1'' and then you can run the regular 3/4'' clutch on the j/s. Yes it is extra expense to start but the idea is to save you money in the long run and make your equipment more reliable. Burris makes a nice 4 stroke j/s mount that I would look into.jmo

 

[Roofer Dude]

Any others out there beside the one from Burris ? I already have 3rd and 4th bearing support.

 

[crewdaddy]

Any billet heads available for the 342? And what about alky carbs? Which one works the best?

 

[Bodydropped]

when we was running our 342 short block we were using a mini drag bike head that was built with a 38mm mikuni. we had to go back to a 305 short block and runs just as good as before

 

[crewdaddy]

Problem with the 342? Or just a lack of performance heads?

 

[Bodydropped]

we needed to deck the block after blowing a headgasket and didnt have time to do it being we was at a race, so we reblocked it in less than an hr