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  #1  
Old 04-10-2018, 08:29 PM
theduff theduff is offline
 
Join Date: Jan 2012
Location: Fallbrook Calif.
Posts: 180
Default WTB Millenium 320 cylinder core

I’ve got 3 good rebuilable cores but need a fourth ! Truth is 2 cores have rejected due to cracks in the exhaust port area. Hopefully somebody has a good Superior Millenium cylinder core they can part with for a reasonable price.
Duff
760-805-6641

Last edited by theduff : 04-10-2018 at 08:31 PM. Reason: Desription
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  #2  
Old 04-10-2018, 09:47 PM
lr172 lr172 is offline
 
Join Date: Oct 2013
Location: Schaumburg, IL
Posts: 2,580
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Quote:
Originally Posted by theduff View Post
Iíve got 3 good rebuilable cores but need a fourth ! Truth is 2 cores have rejected due to cracks in the exhaust port area. Hopefully somebody has a good Superior Millenium cylinder core they can part with for a reasonable price.
Duff
760-805-6641
I have 6 cores, but they are from a 540. I believe they are the same as the 360's, but not the 320's.

Larry
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  #3  
Old 04-11-2018, 06:08 AM
RV6_flyer's Avatar
RV6_flyer RV6_flyer is offline
 
Join Date: Jan 2005
Location: NC25
Posts: 2,872
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Quote:
Originally Posted by theduff View Post
Iíve got 3 good rebuilable cores but need a fourth ! Truth is 2 cores have rejected due to cracks in the exhaust port area. Hopefully somebody has a good Superior Millenium cylinder core they can part with for a reasonable price.
Duff
760-805-6641
Wide Deck or Narrow Deck?

Wide Deck uses Hex Nuts to hold the cylinders to the Case. The Narrow Deck uses Internal Wrenching Nuts (allen style) to hold the cylinders to the Case.
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NC25 RV-6
Flying
3,300+ hours
Building RV-8 S/N: 80012

To most people, the sky is the limit.
To those who love aviation, the sky is home.
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  #4  
Old 04-11-2018, 04:09 PM
theduff theduff is offline
 
Join Date: Jan 2012
Location: Fallbrook Calif.
Posts: 180
Default 0-320 Millenium cylinders

Normally we always assume wide deck unless otherwise stated. Thatís probably because Lycoming came out with the wide deck architecture in the late 60ís. Nothing wrong with the narrow deck but most of them have are very high time but I still build them occasionally.
Duff
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  #5  
Old 04-11-2018, 04:17 PM
theduff theduff is offline
 
Join Date: Jan 2012
Location: Fallbrook Calif.
Posts: 180
Default 0320 Millenium WD cylinders.

Yeah Larry 360 540 interchange but not the 320ís. I did however take some angle valve 360 cylinders and put the heads on 320 barrels for a wide deck angle valve 320. Took the remaining pieces and put the 320 heads on the 360 barrels and had a nice set of parallel valve 360 cylinders. ( the 320 heads are identical to the 360 heads.) Old school hotrodders did the same thing with GO-480 cylinders but they were only made with narrow deck architecture.
Duff


Quote:
Originally Posted by lr172 View Post
I have 6 cores, but they are from a 540. I believe they are the same as the 360's, but not the 320's.

Larry
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  #6  
Old 04-11-2018, 08:16 PM
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RV6_flyer RV6_flyer is offline
 
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Location: NC25
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Quote:
Originally Posted by theduff View Post
Normally we always assume wide deck unless otherwise stated. Thatís probably because Lycoming came out with the wide deck architecture in the late 60ís. Nothing wrong with the narrow deck but most of them have are very high time but I still build them occasionally.
Duff
Never assume.

Narrow Deck cylinders are still being manufactured. I have four Superior Millenium 320 cylinders in my hangar on the shelf. They are Narrow Deck cylinders. I also have four ECI 320 Narrow Deck cylinders with S/N not on the AD list that were manufactured after the AD was issued sitting on the shelf. So I have 8 narrow deck 320 cylinders sitting on the shelf and only four 360 Wide Deck Cylinders on the shelf.

The Narrow Deck cylinders are still being manufactured so when you ask for cylinders, make sure you know what you need or want else someone may provide what you did not want and cannot use.
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Gary A. Sobek
NC25 RV-6
Flying
3,300+ hours
Building RV-8 S/N: 80012

To most people, the sky is the limit.
To those who love aviation, the sky is home.
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