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Thoughts on this stock cyl setup


kshoulde35

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. Fact is alky can't hold up to long pulls.

Really? News to me.

I guess it depends what you mean by "long pulls".  Don't "hill racers" run Alky? Don't 1/8 and 1/4 mile guys run Alky? How long of a pull are you wanting to do? Both of the arenas i just mentioned put tremendous load on an engine and fuel system.

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Lots of misinformation here. There is no downside to Runiing alky other than mpg and having to purge. You run more oil through the motor, and it runs cooler. If anything it is better for your top end. It's hard to fuck up really. I melted ONE top end due to a fuel pump issue. I have probably a 1000 passes on it.

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ran alky on all my bikes.   hell at one time even my "trail bike" was on alky.  30mm lectrons..  i switched back to stock carbs due to mileage.  and pumpgas.

 

535 is pushing 6 years on alky.  

 

in my opinion you need to set the carbs up right AND have a decent set of carbs to start with  i know this will be a piss match also but in my opinion lectrons are the best carbs for alky. 

 

had a 421 that would fuel starve and after adding a pj and changing the setup a lil bit it will run a very long ways before it even starts to fuel starve.   i have personally seen more issues with fuel pumps than what they solve..   

 

recently did my first OEM stock carb bike on an alky conversion.  didnt even need a powerjet in the end.  it was a fun motor.

 

i have seen more morons try to use alky and blow stuff up.  just like any drag engine they take respect and a proper tune to work. 

 

 

on to the question at hand.   lockup ( for tunning) override and shave as much weight as possible and run it.   if you split the motor for the trans check the true on the crank and have the cyls inspected.  also custom domes help out some as well as adjustable ignition with custom map.  

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You will gain what 7-10% IF jetted CORRECTLY. So if you aren't confident in your abilities why bother

Just because you don't know how to run alky doesn't mean it's not worth it. I've helped set up a few motors on it and it was fucking well worth the work.

 

It does damn well on the long pulls and the fact that many outlaw dirt trackers run it is a testament to that. After playing with oxygenated fuels in my bike I think it may get alky for my warm weather riding. I admit it's not for everyone, but once you really get in touch with how to "feel" what a motor is doing and compare it to your plug and piston wash, it's not to complicated.

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