Honda Gx240 Torque Converter

[ogkart]

I picked up a gx240 recentlly that I plan to put on a gokart. While attempting to install this Tav2 torque converter, I noticed 2 issues.

1) I have seen installs where you need to cut the top of the rear oil plug off so that the backplate has the necessary clearance, but that still does not give me enough clearance. It seems like I will either need to do some grinding on the back of the backplate or cut about an 1/8" or so off the top of the oil inlet. Have others had similar issues with this engine and converter? I am assuming the best approach here is to grind the backplate to get the needed clearance.

2) I have about 2" of the 1" diameter shaft to work with. I have not installed the unit yet due to the above issue but the way I see it, after I put the back of the driver plate on, I will have about .5" at most of shaft left. Is that enough length for the front of the driver unit? It seems like less than half of the front driver unit will actually be on the shaft. Can this work or do I need a longer shaft?

I have attached a few pics to help get an idea of what my setup looks like. I am already planning on extending the keyway but wondering if others have ran into these issues and how they handled them.

 

[KartFab]

https://www.ebay.com/itm/New-Cranks...114947?hash=item3b3fe619c3:g:QXkAAOSwc2ZeFP5D

https://www.hlsproparts.com/Honda-GX240-GX270-crankshaft-with-bearing-p/h35241.htm

 

[JTSpeedDemon]

Unfortunately that crankshaft PTO is just too short. Your options are to either change out the crankshaft or get a new engine. That's my advice.

 

[ogkart]

I was afraid of that. Any diy videos or tutorials on replacing the camshaft?

 

[ogkart]

I was afraid of that. Any diy videos or tutorials on replacing the camshaft?

Sorry, I meant the crankshaft.

 

[itsid]

you can run a shaft extension...
just find some 1" keyed shaft (short.. you only need about an inch)
and then a key to align the shaft with the extension properly (as long as possible).

a throughhole to still be able to grab the internal threads of the original crankshaft.
and then you'd be set.

On the other hand the keyway of yours is ...uhm... no longer perfect, is it?
So you want a "GX240 Q" crank instead..
(Q is the Honda letter system for the PTO.. Q means 1" diameter keyed shaft 72mm long.. the longer of the two)
S would be the shorter and it looks like yours was externally threaded as well
[the 'orignal' externally threaded shafts are a bit longer usually that'd be a P shaft])


'sid

 

[ogkart]

Thank you. I am going to replace the crankshaft and go from there.