[F500] Tours and motors

[John Whitling]

Road racers need larger jets because they spend al their time wide open. 
With our short straights we can jet leaner. I'm not at all convinced 
that there's power to be gained by leaning these motors out so I run a 
pretty conservative jet setup of 270's. My EGT's only get to about 1000 
degrees max, but I sleep well.

John Whitling

PS: The two Vees that were added to the entry list aren't going to be 
able to make the Tour. Saddly Jon Billingsley now has to work. That's a 
shame because he's pretty fast this year and it would have been good to 
see him do well.

John Engstrom wrote:

> Speaking of jets, I'm running 280 and 290 in my Rotax/Aean pipe
> FMod.  From other info I've gather off this board it seems I
> should be running larger jets but I checked my plugs and they
> were good.  Heck, maybe the 34mm carbs require smaller jets
> than the 38s.  What jets sizes are you other autocrossers using
> in your Rotax powered cars?
>
> John Engstrom
>
>
>> From: Jeff Blumenthal <jeffbb at ix.netcom.com>
>> Reply-To: f500 at www.f500.org
>> To: f500 at www.f500.org
>> Subject: Re: [F500] Tours and motors
>> Date: Tue, 02 Jul 2002 16:38:49 -0400
>>
>> Hey John Whitling....
>>    Maybe you'd have some time at the Tour to look at Mike's car and 
>> make some
>> recommendations?  Gee, did I just "volunteer" you to help? (Mike 
>> bought the car
>> from Lynn Ritchie).
>>
>> Mike: You probably will want to find out what jets you're using now 
>> so those
>> with Rotax/Mikuni experience will have a reference point. Let me know 
>> what the
>> jet sizes are too....I'll relay the info to Doug Marsh for his input.
>> Glad you got in!  Still have about 5 other FMod's on the waiting 
>> list....
>>
>> -Jeff
>
>
>
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