No Sparkplugs
New member
- Joined
- Jun 29, 2013
- Messages
- 123
I'm helping a friend with his 4BT GMC. He's started to re-assemble the 4BT and noticed that the bowls are not centered in the piston. Piston aren't very well marked as to "FRONT" or anything, and I can't seem to find anything helpful in the Cummins manual. Which way should they be installed?
Any tips for a performance build? It's going to see a set of compounds and ~40psi so if we need to set the ring gap looser than spec or etc, tips like that would be much appreciated.
Thanks
Any tips for a performance build? It's going to see a set of compounds and ~40psi so if we need to set the ring gap looser than spec or etc, tips like that would be much appreciated.
Thanks