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03-18-2022, 10:12 AM
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Join Date: Jan 2022
Location: Stuart, FL
Posts: 2
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Hot #3 cylinder
Thanks in advance.
New to me 2005 build RV7 O360 - 785 hours. On take off, especially first flight of the day CHT goes up to 425 deg, 500 rpm, 17 gph FF. Subsequent flights are much better (relatively) about 400 deg. Cylinder 1,2,4 in the 350 - 380 range on take off. #3 goes to 380-390 at cruise.
The baffling seems OK About 1/2 inch drop from cowling on ramp. It’s in 3 sections. I assume it “flies” up to seal with the upper cowling since there are marks on the cowling.
There appears to be 2 washer spacer at the rear shroud of the cylinder. It’s riveted so additional space in is not really possible.
Any ideas on better air flow?
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03-18-2022, 10:24 AM
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Join Date: Jan 2007
Location: Stuart, FL /Hartford, CT/Virgin Gorda,BVI
Posts: 3,263
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sounds normal to me. same as my 6. 
__________________
TURBO YES =VAF= Payed Jan2022
Ed D'Arcy
RV6-A 5,400+ hrs, R-44 1,700 hrs, Helicycle traded for 33 FFR coupe, 300 young eagles flown
Stuart, Fl / East Hampton,Ct / Virgin Gorda, BVI - villa sold.
VAF #840 EAA AOPA FAC FABA QB SPA
addicted pickle ball player
https://i.postimg.cc/tn3h4svg/IMG-3101.jpg
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03-18-2022, 10:34 AM
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Join Date: Jan 2022
Location: Stuart, FL
Posts: 2
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Turbo - Thanks - I’m your hangar neighbor, Ed
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03-18-2022, 11:31 AM
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Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 7,293
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That big of a delta between 3 and the others (50-75*) is too much to be normal. Mostly likely scenario is poor baffling or something stuck in the fins like debris from a prior birds nest. If you have never built one of these, you may not be able to judge what baffling problems are.
Larry
__________________
N64LR - RV-6A / IO-320, Flying as of 8/2015
N11LR - RV-10, Flying as of 12/2019
Last edited by lr172 : 03-18-2022 at 11:34 AM.
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03-18-2022, 08:02 PM
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Join Date: Mar 2007
Location: WARNER ROBINS, GA
Posts: 604
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Baffle Mod
Read the BAFFLE MOD thread. Wirejock posted to it today, bringing good history forward.
__________________
Keith
RV 7A RV #9700 May 2017
N325KS the Flying “K”
Built in SoCal KCCB, now in GA @ KPXE
900+ Hours & 7X cross the USA
OSH flyin 2018, 2019 & 2022. Petit Jean 2019 & 2021
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03-19-2022, 09:31 AM
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Join Date: Sep 2021
Location: Santa Rosa, CA
Posts: 37
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Baffle
Yes, glad wirejock did post. Doing baffling now and The info especially from Dan was very helpful and informative. Great thread
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03-19-2022, 02:46 PM
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Join Date: Jan 2007
Location: Stuart, FL /Hartford, CT/Virgin Gorda,BVI
Posts: 3,263
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Quote:
Originally Posted by Welippisch
Turbo - Thanks - I’m your hangar neighbor, Ed
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Hey Ed, was wondering who the new guy was. Congrats on your nice RV. Looks real nice. How do you like it?
__________________
TURBO YES =VAF= Payed Jan2022
Ed D'Arcy
RV6-A 5,400+ hrs, R-44 1,700 hrs, Helicycle traded for 33 FFR coupe, 300 young eagles flown
Stuart, Fl / East Hampton,Ct / Virgin Gorda, BVI - villa sold.
VAF #840 EAA AOPA FAC FABA QB SPA
addicted pickle ball player
https://i.postimg.cc/tn3h4svg/IMG-3101.jpg
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