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[RV Builders] (unknown)

 
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dan(at)weyant.net
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PostPosted: Tue Aug 09, 2016 5:23 am    Post subject: [RV Builders] (unknown) Reply with quote

Ralph,

I’m running an IO-320 in my RV-9A.

I initially had some issues with my #1/#3 side running hotter on #1 than #3.  I started slowly cutting my block off plate away.  I eventually wound up removing it entirely.

Obviously each install is a little different. 

When I had one it was about 3 inches long (covered about the lower ½ of the #1.  And about 2 inches high, rougly rectangle shapped

I notice a big difference between cruise and climb.  I think it is mostly related to airspeed.  Slower airspeed and full power I have to really watch my CHT’s.  I usually run in the high 300’s during climb.  At cruise leaned out I run about 350-370.

-Dan

From: RV7A(at)yahoogroups.com [mailto:RV7A(at)yahoogroups.com]
Sent: Tuesday, August 09, 2016 8:11 AM
To: rv-list <rv-list(at)matronics.com>; RV7 Yahoo list <RV7A(at)yahoogroups.com>
Subject: [RV Builders] (unknown)



For those of you running a four cylinder:
What does your #1 block off plate look like?
What kind of shape is it?
What dimensions at each end?
How well does it control / regulate the CHT balance for #1 and #3?
Do you notice differences between climb attitude and level flight attitude?

My #2 and #4 side seems to be pretty well balanced - even with the oil cooler opening up behind the #4. My #1 and #3 side still has the #3 CHT a little higher than I want it consistently and I have been fiddling with the size/shape of the #1 baffle in an effort to get a better level attitude balance. I have the spacer washer between the #3 baffle wraparound and the cylinder head - but I also have the openings for the muffler/heater air back there at the #3 area as well.

I'm trying to get a sense of what is working for folks out there - how big/small, what shape, and how effective.

I have installed the 'Turbo' shrouds at the suggestion of my FI vendor to help balance the injector flows - that seems to be working quite well!

Thanks,
Ralph Capen
Aerosport XP IO360B1F6 with LASAR ignition and Airflow Performance injection

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recapen(at)earthlink.net
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PostPosted: Tue Aug 09, 2016 5:31 am    Post subject: [RV Builders] (unknown) Reply with quote

Thanks Dan!
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