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  #31  
Old 06-23-2019, 04:26 PM
Kyle Boatright Kyle Boatright is offline
 
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Originally Posted by DrPhil View Post
Thanks for that info? Most helpful! So in your opinion would it be better to get an Aero Classics brand or the Airflow oil cooler (2007X) that is found on the Spruce website? I?m just trying to find which is best. I?m thinking because of the difficulty of removal of the Vans 13 row that I presently have on the firewall? I may add this additional oil cooler in series. Your thoughts?
You might also call Pacific Oil Cooler for an opinion. They have always been a good resource for me.
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  #32  
Old 06-23-2019, 05:01 PM
N54SG N54SG is offline
 
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Originally Posted by DrPhil View Post
Thanks for that info? Most helpful! So in your opinion would it be better to get an Aero Classics brand or the Airflow oil cooler (2007X) that is found on the Spruce website? I?m just trying to find which is best. I?m thinking because of the difficulty of removal of the Vans 13 row that I presently have on the firewall? I may add this additional oil cooler in series. Your thoughts?
Don't bother with the 2007X. I don't think more area is the solution here actually, given others have success with just one. It is a differential pressure across the cooler, issue. That is coming from a guy that has 2 HE series oil coolers plumbed in series, but the environment I occasionally run my airplane in, which some may say is rather extreme, it is a required. In summary, if you just want to write a check and probably see some improvement, buy the proper HE Series Aero Classic oil cooler and swap it out.

The much harder solution is probably solve other baffle issues, like this thread talks about. Check engine timing? Oil flow through Vernatherm? etc etc The Vans inlets are huge, so you can solve this. I cool 400 cubic inches, both cylinders and oil, with less than 20 square inches of inlet area. (two 3.5" holes)
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  #33  
Old 06-23-2019, 07:04 PM
DrPhil DrPhil is offline
 
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You?ve made my mind up and I thank you for that! I will be ordering the aero classic cooler from Aircraft Spruce immediately. I will let all of you know what happens when I finally resolve this situation of mine.
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  #34  
Old 06-24-2019, 07:13 AM
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DanH DanH is offline
 
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You?ve made my mind up and I thank you for that! I will be ordering the aero classic cooler from Aircraft Spruce immediately. I will let all of you know what happens when I finally resolve this situation of mine.
What about those P-mag jumpers?
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  #35  
Old 06-24-2019, 07:30 AM
DrPhil DrPhil is offline
 
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Calling Brad Dement at Emag this morning. It's been on my "To-do" list.
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  #36  
Old 06-24-2019, 08:58 AM
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Calling Brad Dement at Emag this morning. It's been on my "To-do" list.
Simply inspect the units for a jumper between terminals 2 and 3.
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  #37  
Old 06-24-2019, 09:29 AM
DrPhil DrPhil is offline
 
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Well, Dan,

It just so happens was inspecting my Emags yesterday and was wondering if 2 & 3 would be the place for the jumpers. So, I'll get the jumpers and re time.
The only time I see any cylinder in the yellow is in a sustained climb, #3 will get to 403 degrees. All the others are in the green. #4 of course is the warmest at 385 degrees.
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  #38  
Old 06-24-2019, 11:37 AM
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DanH DanH is offline
 
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It just so happens was inspecting my Emags yesterday and was wondering if 2 & 3 would be the place for the jumpers. So, I'll get the jumpers and re time.
Please report back after you get a clear idea about your new temperatures.
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  #39  
Old 06-24-2019, 12:07 PM
DrPhil DrPhil is offline
 
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Don?t worry, I will. I appreciate all the info but you guys have given me. I spoke to EMag and I am going to make the jumper wires to go between two and three, re-time the engine at one tooth after top dead center, which he said was about 2? Then I called Pacific Coast oil coolers out in California, Wayne who is the guru there gave me the proper cooler model number to purchase, then I will set them up in parallel not in series.
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  #40  
Old 06-24-2019, 09:45 PM
N54SG N54SG is offline
 
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Originally Posted by DrPhil View Post
Don’t worry, I will. I appreciate all the info but you guys have given me. I spoke to EMag and I am going to make the jumper wires to go between two and three, re-time the engine at one tooth after top dead center, which he said was about 2° Then I called Pacific Coast oil coolers out in California, Wayne who is the guru there gave me the proper cooler model number to purchase, then I will set them up in parallel not in series.
Don't do parallel, that is bad advice. I got that advice from them also. I should add, the idea there is it cuts the velocity of the oil in half as it passes through 2 oil coolers in parallel. That principle is sound, only in a perfect world where pressure to both is exactly equal. Hard to achieve in reality, I think given plumbing constraints.

In parallel, there is zero motivation for ANY oil to go to the second oil cooler. It takes the path of least resistance, and that very possibly will all be through 1 cooler. If you use multiple, they must be in series. I've built 2 airplanes with 2 coolers in series, works great. (if you really need 2)

Tom
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Last edited by N54SG : 06-24-2019 at 09:49 PM.
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