Torque Converter ?

[mikeb89gt]

I currently run a comet 30 series converter on my cart right now. I am currently upgrading my engine to a 11hp Clone. My question is what is the difference between symmetrical and asymmetrical converters. I noticed that the 30 series is a symmetrical and the 40 is asymmetrical. I just want to be sure that it is going to work on the current setup that I have.

 

[Kenny_McCormic]

Actually you have it backwards, the 30 is asymmetrical(one side of belt/pulleys is flat), 40 is symmetrical(V belt). So long as it fits the engine and fits in the cart you are good to go.

 

[mikeb89gt]

Yeah sorry about that, thanks for the info.

 

[anderkart]

upgrading my engine to a 11hp Clone

I just want to be sure that it is going to work on the current setup that I have.

Hey Mike,
I'm not sure what engine your running now, (?) but you might find that new 11-hp has a bigger (driven-pulley) shaft size. Like maybe a 1"... Although Comet does offer the 30 series for 1" motor shaft size, yours might only be a 3/4".

Another thing to consider here is... according to Comet's web site info (found here: http://www.hoffcocomet.com/comet/oem-torque-converters.asp ) Your 30 series Converter is only rated for use with up to 8-hp engines. The 40 series converters are rated up to 18-hp and might be a better choice if you find yours no longer fits on that new motor.

Seems like I've ran across some guys posting that they'd successfully ran 30 sires converters on 10-hp and bigger motors. I'd imagine your gearing and overall kart weight would make a big diference in how well your curent converter and its belts will hold up with your new 11-hp.

 

[mikeb89gt]

Thanks for the info. I am planning on getting the 40 series because first of all I will be going from a 3/4 inch shaft on the old motor to a 1 inch. I just wanted to verify that the new 40 series would be compatible with my setup.

 

[anderkart]

So then you'll have to go ahead and replace both the motor and the driven pulleys, plus the belt to all matching 40 series components. I dont think you can mix and match any components between 30 and 40 series converters. Were you running a Comet Tav system or a separate jack-shaft type setup before with your old motor? (cause I dont think you can install 40 series pulleys in the Tav housing...)

 

[mikeb89gt]

Yes I will be replacing the entire system including belt. I hope that I will get good speed from it, but we will see.