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Matt Dralle
Site Admin
Joined: 08 Nov 2005
Posts: 25781
Location: Livermore CA USA
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 Posted: Thu Jul 17, 2008 9:01 am Post subject: 10:1 Compression / IO-360 200 HP |
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Does anyone have any experience with 10:1 compression in a IO-360 200 HP engine?
* What are the down sides of running 10:1 in that engine?
* What is the HP gain?
* What is the impact to TBO?
* What is the impact to reliability?
If you've done it, would you do it again, or just go with the standard 8.7:1 compression?
Matt Dralle
RV-8 #82880
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BPA(at)bpaengines.com
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| Posted: Thu Jul 17, 2008 9:23 am Post subject: 10:1 Compression / IO-360 200 HP |
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Matt,
I think I can answer your questions.
* The down side to running 10:1 pistons in the 200 hp IO-360 is the
increase
in cylinder pressures and bearing loads, particularly the rod
bearings.
* We see an increase of approximately 6-8 HP on our dynamometer.
* You can just about count on a 1,000 hour TBO with 10:1 pistons
* See last answer!
TBO's are subjective and more dependant on operator input, maintenance
and frequency of use, or lack thereof.
Hope this helps,
Allen
BPE, Inc.
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