DFL’s ‘79 Build

[BROKEROB1]

To smooth out my shifts, I switched my fluid out to a Red Line gl4. I can’t believe how much smoother shifts are. I did NOT have any grinding before the changeout, however.

Question about 4 speed grinding.

I have been driving it for about a month on and off. Now after the rebuild I have been experiencing some slight grinding especially on cold startup when I shift first to second and second to third. Fourth rarely has trouble finding teeth cleanly. Synchros are both new. It’s cold up here in the PNW right now. I have only driven it in warm weather before now.
Anyone have any experience with a rebuilt four speed grinding after a rebuild but not before? Once in gear it sounds and feels fine. I think it’s just the temp outside because the problem is less pronounced when the rig is warm, but it’s still worse now than before the rebuild.
Rebuild was a complete SOR kit with new bearings and synchros. All gears looked pretty good. (Had some slight rounding on second.) All parts were within tolerances. New GL4. Clutch operates well, but I’ll admit I have it over extending the fork right now and I haven’t bled it yet.

 

[Dizzy]

There was a thread earlier. A guy was doing a 4-speed conversion. There was an issue with the transmission input shaft compressed up against the output shaft.

 

[DamnFewLeft]

There was a thread earlier. A guy was doing a 4-speed conversion. There was an issue with the transmission input shaft compressed up against the output shaft.

I had noticed in my last moments of rebuilding that the two were pressed a bit tightly. Went back thru my photos and determined how the bearings sat in the case because I couldn’t get the tail to stop spinning in neutral. I drove the input toward the output to seat the output, then drove the input forward again away from the output. Solved the problem. Unless installation pushed the input shaft back in, then I don’t think that’s the problem causing grinding. Being a ‘79, I don’t have a super easy way of pulling the top of the transmission off without pulling the trans again. Bleeding the clutch today... easy stuff first.

 

[DamnFewLeft]

To smooth out my shifts, I switched my fluid out to a Red Line gl4. I can’t believe how much smoother shifts are. I did NOT have any grinding before the changeout, however.

I have definitely wondered if it is the fluid. The stuff I purchased is not the Lucas stuff I ran before. Fluid swap is step two or three, and I’ll keep an eye out for Red Line. Thanks!

 

[DamnFewLeft]

Well... it’s not the fluid. It might have been bog water, but it was compressible. Stuff floating on the top is just new GL4 from the tube and is clearly less dense.

But it gave me a chance to get the youngest out to the garage to help bleed the clutch so I don’t care what came of it!

 

[DamnFewLeft]

I have been going out to the cruiser to a dead battery. Takes about four days. I noticed that when it gets wet, the carb fan will short and run at weird times. It’d be on randomly two days after I drove it. So I unplugged it. Then it snowed a ton where I live over the last 24hrs. As a result I found it imperative that I find out if the new mod would still allow me to do donuts in the snow.

Yes, the answer is yes.

Anyone ever have issues with the carb fan operating sporadically and you solved it?