Super Jet 62T cases. WTF?
- Thread starter tshank123
- Start date
Freakrider
X247
- Location
- Tampa Bay area
Couple years ago bought a NEW Taiwan Twat Rods crank and the lower rod bearings had way too much play in it...shipped it back and bought oem.
- Location
- s florida
I had a brand new Hot Rod for a 1200r that binded up when you closed the cases. turns out it was faulty and I got a replacement that was perfect.
Note to self, do a premilinary fit before you end up putting a fresh coat of 1211 to seal the cases and find this crap out!!
Note to self, do a premilinary fit before you end up putting a fresh coat of 1211 to seal the cases and find this crap out!!
Ok, thats good to know. I have another motor that I'm gonna rip appart this weekend. Hopefully those cases don't have the lip hanging over.
Just thought I would throw an update out there. I was able to get my new crank to fit another set of cases that didn't have such a bad mismatch. However, the crank that came out of that set of cases (OEM), fits my original cases. I was fine with that, whatever.
So I moved on and guess what, my aftermarket couplers do not fit my new crank. The aftermarket couplers fit the OEM crank, and the OEM couplers fit the aftermarket crank. The OEM couplers have a ton of play on the OEM crank but are tight on the aftermarket crank. The aftermarket couplers, tight on the OEM crank.
Here is what I learned through all of this. You can build a crank to OEM specifications, but that does not mean it will fit like an OEM crank. I'm a victim of tolerance stacking. It appears that the OEM cranks are made on one end of the tolerance spectrum while this aftermarket crank was made on the other end.
I've been told in the past to only use OEM cranks and I always have until this one. I was talked into it, and I regret it. I will personally never buy an aftermarket crank again.
So I moved on and guess what, my aftermarket couplers do not fit my new crank. The aftermarket couplers fit the OEM crank, and the OEM couplers fit the aftermarket crank. The OEM couplers have a ton of play on the OEM crank but are tight on the aftermarket crank. The aftermarket couplers, tight on the OEM crank.
Here is what I learned through all of this. You can build a crank to OEM specifications, but that does not mean it will fit like an OEM crank. I'm a victim of tolerance stacking. It appears that the OEM cranks are made on one end of the tolerance spectrum while this aftermarket crank was made on the other end.
I've been told in the past to only use OEM cranks and I always have until this one. I was talked into it, and I regret it. I will personally never buy an aftermarket crank again.
- Location
- Gilbert, AZ
I had the same coupler issue with my aftermarket crank. Seemed that both the crank threads and coupler threads were on the tight side of their tolerance spec. After taking my tbm coupler to crankworks, and having them run a tap down the coupler, the coupler fit good. I was a little surprised how much material their tap removed. Which aftermarket crank are you using?