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59 xk150 gearbox

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AH67

AH67

Senior Member
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Hi y’all,
The gear box is bad on newly acquired xk150.
I am looking for suggestions please: rebuild vs replace? Any advice would be great.
I am in Portland OR
 
Moss Box. O/D? W/O O/D at least $3500 to rebuild (quote on my Moss Box...due to rebuilding of synchros), Replace.....rebuilt....same plus cost of box.
Heritage Certificate? VIN Data Plate? Numbers Matched trans? Or is it important to you?
Show or drive?

What exactly is "bad"?
 
I tear down and rebuild. Buy syncros in England. Not a hard box to work on, so problem should be quick to find. Why is box bad? Which gear is giving problems or is tranny just broke? There aren't 5-speed conversions, but expensive.
 
LarryK said:
I tear down and rebuild. Buy syncros in England. Not a hard box to work on, so problem should be quick to find. Why is box bad? Which gear is giving problems or is tranny just broke? There aren't 5-speed conversions, but expensive.
Click to expand...

Last time I checked, when I had my engine/gearbox out, Moss Box synchros long gone, even in UK. They have to braze or cast new brass onto the old gears to get synchro functionality back.
Where did you find them?
 
Last time I pulled and rebuilt was in the 80s, so probably past time. I did rework a MKVII box. Gear shot, so ordered a used from Canada and moved gears and shafts into original case for correct numbers. That wasn't cheap either. I would look on ebay.uk for used first, before making new.
 
80's...yeah. Three years or so ago I tried on my Moss box, no way. And $3500 to do the synchros bearings and such, I live with a second gear crunch on occasion.
 
I have a machine shop that I took first gear in to see if he could weld a piece on the shifting flange so the bronze shift saddle would not get caught. The counter guy said maybe a shim around the groove. Can't reduce the shifting bronze might break, as there is a fit tolerance. The main guy came out and told me those British gears can't be welded. I don't want the gear welded, just the little notch in the slide, I can do that, I'll ice the gear, those Brits know how to harden steel. Done and working good for 3 yrs now.
 
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