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Post by n3480h on Aug 11, 2011 21:33:44 GMT -5
Anyone here done the fat fins head mod? I've been reading a bit, and this sounds like it may be a workable solution to heat management. There are some down sides to the process, but it appears that it may be worthwhile IF excessive CHT is a problem. waynesexperiments.blogspot.com/Any thoughts? Tom |
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Post by daddo2 on Aug 11, 2011 23:44:38 GMT -5
My buddy's KR2 does but he says there is no noticible difference from the old heads.
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Post by oahupilot on Aug 12, 2011 5:27:43 GMT -5
I think a better oil cooler would solve the issue.
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Post by n3480h on Aug 12, 2011 12:39:41 GMT -5
Thanks guys. Yes a decent oil cooler is my first choice, much less fuss and benefits the entire engine. This is a 2180, so I don't anticipate serious cooling issues.
Brings to mind another question. I know a lot of builders use the larger oil cooler mounted under the sump. What I gather is that the cooler is mounted to an aluminum baffle that makes use of the smiley cowl cutout, and the baffle then mounts via the metric threaded holes on the sides of the sump - correct? Obviously the baffle and cooler must be removeable for oil changes. Is this accurate, or is there a better way?
Tom
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Post by chuck59 on Aug 16, 2011 11:09:09 GMT -5
Thanks guys. Yes a decent oil cooler is my first choice, much less fuss and benefits the entire engine. This is a 2180, so I don't anticipate serious cooling issues. Brings to mind another question. I know a lot of builders use the larger oil cooler mounted under the sump. What I gather is that the cooler is mounted to an aluminum baffle that makes use of the smiley cowl cutout, and the baffle then mounts via the metric threaded holes on the sides of the sump - correct? Obviously the baffle and cooler must be removeable for oil changes. Is this accurate, or is there a better way? Tom Yep, that's correct. It was too efficient on Mouser, and I mounted the oil cooler on the bottom of the baffle with a (roughly) 2" x 4" opening. |
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hans
Full Member
Posts: 166
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Post by hans on Aug 16, 2011 12:49:04 GMT -5
for slow flying high-drag planes, fat fins might be a good idea. For Sonerai's, KR's and the like it is likely less benificial.
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Post by n3480h on Aug 16, 2011 17:19:02 GMT -5
Thanks for the replies, guys. This is very helpful. While there is a Sonerai II on our local field, it is a different critter than mine, so I have to research a lot of things.
Tom
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