Your dual port fan was made to cool a 1600cc motor yet we use it to cool 2500's. I know, but what can we do. In the past I took a 1/2 tube of RTV and glued the gap between the fan and the shroud. The next day I took a razor blade and ran the edge along the fan and freed it loose. The escaping cooling air difference was incredible. I went a step further and got some house air conditioning duct and ran it 2 feet away from the HOT engine area. It was a 13 degree difference at IDLE with an a/c thermometer! If you LOVE your motor , try it . It cost under $10. Here's an idea, I'd like for someone to try. Weld 2 fans together opposing each other . That would hurl some air but make sure it is spin balanced somehow.I don't know.Thanks Dave out. Oh, Did ya ever see these people with giant motors with raggedy tin and gapeing holes? Wouldn't you like to club them? And then they stand there and tell ya they have been running it that way for years.BS BS BS sorry.They are the very ones that dissappear for 1-3 rides and re-ring their motor and come back to the trail like nothing happened and their motors are still 5 years old since rebuild.My rule of thumb is "The air comes in 1 way and goes out 1 way."Seal all your cracks and spark plug wire gaps.PRESSURIZE those cylinders.Do I run around in my w/c spewing water?

if i were to guess i would say yea...

Any pis of your work and what gauge/type did you use

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If its on the internet its got to be true they can't put any lie's on the internet

you sure do run around the internet spewing.....

J/K, actually the rtv around the fan to fill that open gap sounds like a good idea. I have thought about using some door edge molding to do the same thing.
Dont think 2 fans apposing would work well because the added on fan would push air out the back of the shroud robbing cool air from the first fan , wouldnt it? But, a second one facing the same way inside an extra wide shroud might do good. A lot of trouble though. I doubt either would cool better than a one piece porsche style shroud and fan , though. (But then we'd be supporting CA some more. )

Thats a good fix. We used to fab pieces of aluminium flat stock to bolt in the space. The RTV makes a better seal. I run the FI shroud with the venturi ring that VW designed to pull in more air. Someone is making the ring to weld on earlier stock housings.

No. Think hard about the direction the blades are. Remember 2 fans opposing each other. The 1st one sucks and the second blows. THAT would pack some air! Maybe I am the smartest buggier that ever walked the planet.Yall just keep on burning your motors up . California loves you. AAAAAHHHHHHH!

My motor has two years on it and aint lost a pound of compression and shows no signs of burnin up anytime soon, and I ride it all summer.
Didnt you tell me the compression in that vr6 is already all over the place and you'd like to find another one??

Roy summed it up......"Buy the best, cry once"

Good one.But when I first learned w/c I made some bad mistakes such as burping trapped air and running a useless fan relay instead of running it direct and someone plucking a fuse from it. If I could start all over with a new one I would take better precautions. Thanks for pointing that out.But VR6's are only $750.

BUT YOU ARE How could you have made any mistakes?

J/K......you are right about needing to seal the shroud and tins as well as possible on a a/c motor. But I still think the dual fans would work against each other. The original fan would be trying to pull in air thru the back of the shroud, and the one added on in opposing direction would be blowing that same air out. There would be dead air in the shroud. I think.
Anyways....IT DOESNT MATTER about the fan, Jabroni. I wouldnt want the extra drag on the motor all the time.
Works fine and lasts long enough as is. Even if we had to re-ring every 5-6 years (which most do not), who cares, its the price you pay to ride a hi-performance light buggy. Its worth it to me.

On some turbine there is dual fans running in opposite directions,,,I think

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If your clutch ain't slippin,, you probably got it adjusted right!!!!!