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  #21  
Old 03-07-2020, 08:52 PM
BillL BillL is offline
 
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Location: Central IL
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Quote:
Originally Posted by Roo747 View Post
Hey Can someone go over the baffling remark again in more detail? I have a fairly high #3 CHT relative to the other three(IO-375) do I need to increase baffling on the #3 or decrease baffling.

Same Peak EGT when leaning across #3 and #4 cylinders. Also, #2 is running a little low relative to all the others with same peak EGT across #1 and #2. (they are a little behind the #3 and #4, however, I have some new fuel nozzles on the way so should smooth that out.)
Not really worried about the EGT's just some extra information.

Thanks

Andrew
What is your delta-T? Have you opened up the restricted flow area on the back of #3?
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  #22  
Old 03-08-2020, 05:59 AM
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Roo747 Roo747 is offline
 
Join Date: Aug 2010
Location: Flesherton, ON
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Default Delta-T

hey Bill.

The Delta between cyl 2 and 3 is about 60-70
deg C.

I?ll have to look again at the back of cyl 3. Oil cooler comes off behind #3 as well.
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  #23  
Old 03-08-2020, 05:15 PM
Robb Robb is offline
 
Join Date: Sep 2015
Location: Nevada City Ca
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My old RV 7 had pistol squirters and a Sam James plenum with 10 to 1 pistons. I had the stock exit area and all my CHT's were great always around 360 and even. The issue I had in the summer was high oil temps. I ended up increasing the scat tube to 4 inch and a larger cooler. Before I fixed it it would push 235 if I didnt step climb. The issue with my plenum was that the opening to the cooler did not have enough square inches and it was partially covered up by the rear cylinder.
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