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Vetterman 4 into 4 exhaust

C

Coling955

Member
I'm running a Vetterman 4 into 4 exhaust on my 7's XP IO-360. I get quite high CHTs because I think the four pipes fill up too much space in the cowl's exit. Anyone out there run the same system?
 
I've got the 4-pipe and I've thought the same thing. Although I can't say for sure that's the issue because there's probably more work I can do to seal up the baffles.

I'm usually bouncing off 380 or so, and on hot days my climb is limited to 110mph.
 
Coling955 said:
I'm running a Vetterman 4 into 4 exhaust on my 7's XP IO-360. I get quite high CHTs because I think the four pipes fill up too much space in the cowl's exit. Anyone out there run the same system?
Click to expand...

Have you always run the 4 pipe on this airplane? There's a member here who switched from the Vet crossover to the 4 pipe and saw no change in CHT. Perhaps he'll chime in, but I suspect the "blocked exit" is a bit of an OWT.
 
It is not the lack of exit space.

I have 2.2 hours on the same setup and now the hottest cylinder is number two at 374 degrees.

I would look at high pressure area leakage. They might even make a pill for that now!

;). CJ
 
What should be better Raven, Vetterman trombone , Vetterman crossover or Vetterman 4 into 4 exhaust ?

I'm very lost here...:(
 
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