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  #1  
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.
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  #2  
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

Steve,

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.
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  #3  
Old 11-23-2021, 12:58 PM
Mcmark Mcmark is offline
 
Join Date: Aug 2020
Location: Owings, MD
Posts: 31
Default

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.
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