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Old 11-23-2021, 01:39 AM
SteveHicks SteveHicks is offline
Join Date: Sep 2017
Location: Shropshire, UK
Posts: 24
Default EXP119 Exhaust

The Vans EXP119 Crossover exhaust has a 6 month lead time at the moment. Vetterman can supply an exhaust for the EXP119, but is not a crossover design ... ie Cylinders 1 & 3 exit right side, 2 & 4 left side.
Vans undoubtedly put a lot of effort into designing the the EXP119 crossover installation for good reasons.
Has anyone installed the Vetterman solution for the EXP119, or got knowledge of the pros/cons.
Steve Hicks
RV14 - building
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Old 11-23-2021, 07:25 AM
jeffreyuh60's Avatar
jeffreyuh60 jeffreyuh60 is offline
Join Date: Sep 2018
Location: Saint Paul
Posts: 23
Default EXP-119 Exhaust


Not be discouraging, but in my recent experience, the EXP-119 exhaust has a ten month lead time. A word of caution- the heater muff may interfere with your throttle arm forward throw. I discovered this while making airplane noises safely in my hangar, versus in flight, thank goodness. I double wrapped safety wire at each end of the heater muff to prevent it from creeping.
Jeffrey Turner
RV-14 N39JT
Almost up to smoke test and first start...
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Old 11-23-2021, 12:58 PM
Mcmark Mcmark is offline
Join Date: Aug 2020
Location: Owings, MD
Posts: 31

If you dig thru Kitplanes you'll find an article on the types of exhaust and rankings from best to worst.
I believe you are asking about the Vetterman equal length 4 into 4 vs a X-over. Performance gained or lost is almost nil between the 2. Disadvantage of the 4 into 4 is muffs for heat/carb.
4:1 is the best for HP but we are not talking huge gains unless you are going to the ultimate degree of cold air induction, etc.
Mark McKibben

Starduster SS101

"Let us endeavor to live so that when we come to die, even the undertaker will be sorry." Mark Twain
Donated '21
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