Q-500 Racing Discuss AMA 428, AMA 424, and any other variants of Quickie 500 racing

Jett Q 500 engine

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Old 11-12-2013, 01:50 PM
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Conrod
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Default Jett Q 500 engine

Hi
Can anyone please tell me, if there is any performance difference between the BSE and cast case Jett Q500 engines.
Thanks
Geoff
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Old 11-12-2013, 09:37 PM
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The long stroke version cast case is the highest performance Jett Q500 engine
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Old 11-13-2013, 05:17 AM
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The long stroke is for Q40, not Q500. The case does not make a difference, and I have never seen the BSE at a race.
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Old 11-13-2013, 08:05 AM
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I beg your pardon, the response to original post is correct!
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Old 11-13-2013, 08:42 AM
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Yes, it depends on which version of Q500 one is referring to - the 428 engine was available in long stroke if I remember correctly. The 426 engine being used these days is not.

There was a short stroke BSE Q500, I have one. Never raced with it, we started flying 426 around this part of the country instead of 428.
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Old 11-13-2013, 10:39 AM
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I apologize Kommander, I was thinking an engine which is legal in modern Quickie

Forgot about history 101...
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Old 11-13-2013, 10:46 AM
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Thanks for the replies. Should have made the question a bit clearer, it is the 428 motor I am interested in.
Geoff
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Old 11-15-2013, 07:07 AM
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The Kommander would know !!!
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Old 11-16-2013, 11:16 AM
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Call Dub and ask him direct -
QII 500's are long stroke, i have a cast case model and it's a stump puller - in a ninja 170+ mph
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Old 11-24-2013, 06:55 PM
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Quote:
Originally Posted by Conrod View Post
Hi
Can anyone please tell me, if there is any performance difference between the BSE and cast case Jett Q500 engines.
Thanks
Geoff
I prefer the newer cast case vs. the BSE option. I had both types and still prefer the cast case version over the BSE because of its stiffer one piece crankcase.

A few years ago, my team-mate Chuck had the Jett LS Q500 engine radar in the SAM-RAI Q500 that hit more than 185 MPH at Whittier Narrow Park, CA during practice while experimenting with different props. The engine was strong but it didn't last since it ate the dirt coming around pylon 3 during its early heat race. This was the cast case LS version.

On paper the numbers are the same, but whichever you choose to go with, good luck, have fun and make the best of it.

Hope this helps.

Sam
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