yikes

[explorer]

OK, guess I'm in over my head,
I'm redoing a Murray go kart so I bought a Predator engine and then bought a 40 series torque converter,
got the converter today and it is longer than the shaft on the engine,
so do I just buy a long bolt to hold it on or is this a problem???
thanks for you advice

 

[KartFab]

OK, guess I'm in over my head,
I'm redoing a Murray go kart so I bought a Predator engine and then bought a 40 series torque converter,
got the converter today and it is longer than the shaft on the engine,
so do I just buy a long bolt to hold it on or is this a problem???
thanks for you advice

thats what you do. Make sure you get a thick/stepped washer if the 40 series didnt come with one. use blue thread locker and either air impact the bolt on, or use a wrench/hammer to impact the bolt on.

 

[explorer]

ok, thanks, its a whole inch,
really scary to me

 

[explorer]

yikes again

I'm trying to renew this kart that has a blown engine,
I bought a 40 series torque converter (driven) to replace the 30 shown in the pic of the jackshaft,
but......
the 40 is an inch thicker and I barely have a half inch of threads left,

what can I do??

 

[Tpdingo]

I'm trying to renew this kart that has a blown engine,
I bought a 40 series torque converter (driven) to replace the 30 shown in the pic of the jackshaft,
but......
the 40 is an inch thicker and I barely have a half inch of threads left,

what can I do??

Buy a new jackshaft in the correct size.

https://www.gopowersports.com/5-8-threaded-jackshaft/

This a 5/8" shaft. If you have a 3/4" shaft, then you have to get a 3/4" shaft.

 

[explorer]

I was afraid of that,
it is a 3/4 shaft with 5/8 threads on the ends,
but only one end actually needs threads

 

[Tpdingo]

Both sides need threads. Your sprocket is so rust welded on that it doesn't come loose, even without the bolt.

And it is like 25-30$. That is nothing for a TAV40 swap. Make sure to get the correct size belt for the TAV40.

 

[explorer]

the sprocket didn't have a nut,

Is it possible to run a driven torque converter on a straight 3/4 inch shaft with no threads or nut?
how would I hold it on?

I'm having a hard time finding a jackshaft the same as mine only one inch longer,
maybe I can buy a keyed 3/4 shaft and get it threaded on both ends and buy nuts to fit

 

[Randy H]

Is it possible to run a driven torque converter on a straight 3/4 inch shaft with no threads or nut?
how would I hold it on?

Yes with lock collars. I did exactly that on a 420 Predator machine with a 40 series torque converter and ¾ keyed shaft. I used the elcheapo one piece variety. This works just fine, some people might feel better about split lock collars or 2 piece units.

 

[explorer]

thanks, it seemed like it would work