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  #11  
Old 05-13-2020, 09:39 AM
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DanH DanH is offline
 
Join Date: Oct 2005
Location: 08A
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Quote:
Originally Posted by rv6ejguy View Post
Ashley Miller brought to my attention that the new 390 C and D sub types use RSA-10 size servos rather than RSA-5 which is interesting.
Interesting indeed. I didn't catch that change.

Quote:
We find our 80mm throttles bodies (RSA-10 bolt pattern) on 540 engines produce no more manifold pressure past about 2/3rds throttle. With 150 less cubes, I'm not sure how much a 390 would benefit from such a large servo.
The 80mm body bolts to an RSA-10 size flange?
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  #12  
Old 05-13-2020, 11:58 AM
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rv6ejguy rv6ejguy is offline
 
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Quote:
Originally Posted by DanH View Post

The 80mm body bolts to an RSA-10 size flange?
Yes but several inches shorter so some mods to connect to a filter/snorkel are required.
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Ross Farnham, Calgary, Alberta
Turbo Subaru EJ22, SDS EFI, Marcotte M-300, IVO, Shorai- RV6A C-GVZX flying from CYBW since 2003- 441.0 hrs. on the Hobbs,
RV10 95% built- Sold 2016
http://www.sdsefi.com/aircraft.html
http://sdsefi.com/cpi2.htm


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  #13  
Old 05-13-2020, 03:19 PM
paszekj paszekj is offline
 
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Thanks! I think that?s exactly what I do. I heard back from Clint at Vetterman and he informed me that they?ve done several exhausts for the 390 with a Superior cold air sump.
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John Paszek
West Des Moines, Iowa
RV 14A
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