Jett ABC/AAC  
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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> Jett Engineering Support >> Jett ABC/AAC
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Jett ABC/AAC - 7/30/2007 6:58:00 PM   
Lomcevak Duck



Posts: 866
Joined: 2/22/2004
From: Warner Robins, GA, USA
Status: offline 		What is the difference between the ABC and AAC liners Jett offers? Any performance or longevity diferences?

_____________________________

When someone loses a plane in the pits, you do a lomcevak duck.
Press Alt F4 to see my other witty line.
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RE: Jett ABC/AAC - 7/30/2007 7:54:12 PM   
bob27s



Posts: 4637
Joined: 4/9/2002
From: Cleveland, OH, USA
Status: offline 		In general, the two perform the same. They wear about the same too.

The AAC costs a bit more usually, but the trade off is that the sleeve is lighter (AL vs Brass )

AAC also 'can' have a performance advantage. More equal expansion due to heat. Dub has actually come up with a very unique way to take advantage of this, and for the lower rpm engines (CL engines , BSE76L, BSE100L, etc) can provide better midrange and throttle response ---- engine can be built differently and runs "looser". In effect, they run more like a ringged engine, but have all of the ABC type benifits.

Run properly, the AAC 'can' outlast the ABC. But that is very hard to quantify, so take that with a grain of salt.

On the high-speed engines..... pretty much a toss-up since folks do not tend to run a great deal in midrange.

Bob


_____________________________

Bob Brassell
Jett Engineering - Engine Mfg Support Forum Host

(in reply to Lomcevak Duck)
       Post #: 2

RE: Jett ABC/AAC - 7/30/2007 8:20:20 PM   
Lomcevak Duck



Posts: 866
Joined: 2/22/2004
From: Warner Robins, GA, USA
Status: offline 		Thanks, I understand.

_____________________________

When someone loses a plane in the pits, you do a lomcevak duck.
Press Alt F4 to see my other witty line.

(in reply to bob27s)
       Post #: 3

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All Forums >> Glow Engines, Gas Engines, Fuel & Mfg Support Forums >> Engine Manufacturers Direct Support Forum >> Jett Engineering Support >> Jett ABC/AAC
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