Muncie Guys Needed
Thread Starter
Instructor
Joined: Dec 2009
Posts: 146
Likes: 4
From: Penville On.
Muncie Guys Needed
My 1973 M20 1st/2nd gear slider is just touching the reverse gear idler when in 1st gear. The transmission was sold to me a year ago as rebuilt. I have no idea who did the rebuild, but I think it was rebuilt because I could see new brass and assembly lube when I inspected it. I have it on the bench and can see a little wear on the slider and idler gear where they have been touching. Where do you think the problem is? Is it a problem with the assembly of the main shaft?
Jack
Jack
Last edited by Jackk; Feb 5, 2012 at 04:53 PM.
Racer
Joined: Jan 2009
Posts: 261
Likes: 1
From: frederick maryland
just rebuilt my muncie, but im no expert. i do have a book that tells u to grid a bit off the rev idler teeth to prevent this. another possibility... ill need to check my muncie build video again, but apparently older 3/4 sliders werent tapered, and the vid warned of installing the 3/4 slider in the 1/2 position for this reason. the missing thrust washer could do it as well.
any chance u could post some pix?
any chance u could post some pix?
Racer
Joined: Jan 2009
Posts: 261
Likes: 1
From: frederick maryland
http://www.5speeds.com/racing/m22x.html
little ways down they show grinding the idler gear. its a m22, but i dont think that matters.
cant find a pix of the old style sliders
little ways down they show grinding the idler gear. its a m22, but i dont think that matters.
cant find a pix of the old style sliders
Burning Brakes
Joined: Mar 2005
Posts: 1,231
Likes: 34
From: Ontario
Grind The Gear
I had the same problem with my m22 . I called 5speed.com and he was very helpful . He told me to grind about .010 " off the gear teeth so it doesn't rub in first gear .
He explained it as just overall wear increasing the clearance enough to let this happen .
Mine made a noise in first gear that sounded like a tooth was missing. I just finished putting it back together yesterday and hope to have it back in the car by the end of the month .
Regards Bill
He explained it as just overall wear increasing the clearance enough to let this happen .
Mine made a noise in first gear that sounded like a tooth was missing. I just finished putting it back together yesterday and hope to have it back in the car by the end of the month .
Regards Bill
Thread Starter
Instructor
Joined: Dec 2009
Posts: 146
Likes: 4
From: Penville On.
I had the same problem with my m22 . I called 5speed.com and he was very helpful . He told me to grind about .010 " off the gear teeth so it doesn't rub in first gear .
He explained it as just overall wear increasing the clearance enough to let this happen .
Mine made a noise in first gear that sounded like a tooth was missing. I just finished putting it back together yesterday and hope to have it back in the car by the end of the month .
Regards Bill
He explained it as just overall wear increasing the clearance enough to let this happen .
Mine made a noise in first gear that sounded like a tooth was missing. I just finished putting it back together yesterday and hope to have it back in the car by the end of the month .
Regards Bill
