Building a Stage 4 V-TWIN...

[HoldenIron]

Building a stage 4 V-TWIN from a new Predator motor...95% of the parts are coming from performance670.com

Motor will be pushing 50-60 HP....thoughts on a torque converter?

Comet 780 tops out around 25 HP...anybody have any other suggestions for a torque converter that can handle the power? Buddy of mine says there is a torque converter that’s out that will work up to 50 HP he believes but he can’t remember the name and so far I haven’t found it on google...

 

[landuse]

Personally I do not think you are going to get one for that amount of horsepower

 

[NewbCarter]

Maybe getting one from a snowmobile of sorts ?

 

[Kartorbust]

I would suggest a 94c duster. A 4 stroke snowmobile cvt has a larger shaft than what the Predator has, and I'm not sure if sleeping the cvt or pto on the engine would be a good idea. The 94c is an older design and uses pucks to adjust engagement speed. Its rated up to 40hp on 4 stroke and 50hp 2 stroke.

Another option but might be even more expensive would be CVTech or Gaged CVT. Gaged CVT is based out here in Lincoln, Nebraska. Normally both CVTech and Gaged are used in SAE Baja buggies, but they do sell to the public.

 

[J.S.@SMS]

Cars and Cameras built the same engine and later used a 780 and didn't have any problems with that TC. However their engine did seize up (no main bearings). Just don't use a 40 series. They had one lock up and flip their mower.

 

[Joe-405]

If you wanna spend the extra money you could get one off of a junior dragster. In a billet style. I think they are all 3/4 shaft tho so you would half to stick your crank on a lathe and turn it down.

That’s what a lot of the big block guys are doing on their mini drag bikes.

 

[gman3850]

What do you plan on doing with this motor. Then we can help decide on a tc

 

[HoldenIron]

My buddy finally remembered it was a Comet 1180 or 1190 series torque converter that was rated for about 45 or 50HP....trying to do a little research on it but not finding much...Anybody here every tried that series?

I just watched Cars and Cameras drag build using that 780 Comet. Might be worth a shot.

Someone asked what kinda build I was doing...large adult size buggy with independent front and rear suspension. Actually this buggy will go to my teen age sons to mess with because it’s a test platform as such for a later build for myself. The later build will be a single seat adult size buggy front and rear independent suspension but with 2 V-Twins on the rear. Basically gonna be a 4x4....one motor for the front and one for the rear..

 

[FoulMouth]

Basically gonna be a 4x4....one motor for the front and one for the rear..

Holy Smokes..... Is that possible? Wouldn't that buck and shake like.....dangit, as the axles loose and find grip. I guess they do it in electric vehicles, but..... weird.

 

[Kaptain Krunch]

With the amount of money your going to spend you could easily buy a snowmobile or motorcycle engine...Im sure you've heard that before, but it will be more reliable in every aspect.