Forum Discussion

John___Angela's avatar
John___Angela
Explorer
Jun 14, 2015

Exhaust manifold crack on ISC350 and effect on power.

Hello all. I have a cracked exhaust manifold on my ISC350 (2003). Replacing it next month. Curious about the effect on * power, * turbo boost, * exhaust brake effect. All of which I ha...
Class A
ScottG's avatar
ScottG
Nomad
Jun 14, 2015
You will also having higher EGT's, especially if it really lets go. If it gets a lot worse, don't drive it at all.

About Motorhome Group

38,766 PostsLatest Activity: Jan 10, 2026