TR2/3/3A TR2/3 Trany needed

[DART]

HELP!!! My mechanic says "THERE IS A WHOLE TOOTH OFF OF THE CLUSTER GEAR AND A CHIP OFF OF THE FIRST SLIDING HUB." This is my Daimler SP250 which uses the same gears as TR2/3. Anyone with a good source, spare trany, or other helpful info???

Rolling shifts into a non-syncro 1st gear can come back to bite you, it would seem.

 

[DougF]

Scott Harper at Team Triumph in Warren, OH might have what you need.
(330)392-7176

Does anybody put a TR4 unit in the case to give you synchro in 1st?

 

[martx-5]

You might also try John at Quantum Mechanics.

 

[Geo Hahn]

...Does anybody put a TR4 unit in the case to give you synchro in 1st?

I'm under the impression that takes a different case -- i.e. that is why the TR4 box is a tad longer than the TR3A.

 

[DART]

As I understand it, even the 3A unit is the wrong size. Because the SP obviously uses a different bell housing, etc., and they never changed the trany, only the TR2/3 unit will fit in the SP box. Daimler used as many parts from the TR shelves as they could.

 

[alfa33047]

I have about 10 good Triumph TR-3 transmissions out behind my shop that I would like to give away. They are missing bell housing, clutch arm and fork, shifter handles and rear output flange and the gear oil has been drained out. All came out of running cars and have no known problems. Located in Phoenix, Arizona, Thanks, Bill C, (602)524-5351

 

[tdskip]

So will a later synchro box fit or can it be made to fit?

 

[TR3driver]

As I understand it, even the 3A unit is the wrong size.

Likely the problem there is the starter bulge, which got much larger at TS50000 (not the 3/3A change). The later boxes won't even fit into earlier TR3As without some massaging of the sheetmetal in that area.

 

[TR3driver]

I'm under the impression that takes a different case -- i.e. that is why the TR4 box is a tad longer than the TR3A.

Lots of other differences, too, so I don't think there is any practical way to mix-n-match.

However, the gears from the later 3A boxes should fit in the earlier boxes with no problems. There were some changes in bearing style so you'd have to be sure to get the right bearings but I believe the gears interchange.

Best would be for someone to run over and clean up Bill's bone pile for him. Sounds like a great find for anyone trying to keep one of those old boxes on the road!

 

[TFR]

I have a spare TR3 tranny and I live in lexington, KY. If your interested PM me and we can make arrangements.

 

[DART]

Thanks all, I've sent the info to my mechanic/restorer for his input. Since I really only need the cluster and slider for 1st the distance & shipping should not be an issue. Stay tuned....

 

[DART]

Thanks Art, John had what we needed & it is on the way. Again, thanks to all who helped...since my "other" SP has even more TR parts (rack system, steering column & associated things) I'll probably be back with more needs in the future.

 

[Geo Hahn]

...They are missing bell housing, clutch arm and fork, shifter handles and rear output flange and the gear oil has been drained out...

Golly Bill, some people are going to wonder what strange things you're doing to end up with just the middle of the box left over.

One thing I would not recommend is a Google search. When I was looking for a gearbox I tried various search combinations -- including "British Tranny". That one got a lot of interesting hits. Nice blokes, but couldn't help me with the gearbox.

 

[alfa33047]

George has been here and has seen the collection of Triumph transmissions. I cut the bell housings off the Triumph transmissions and weld on a plate to mount a Toyota 5 speed and install in Triumphs. I use other parts from the Triumph transmission also. I now build a Toyota conversion kit that requires no welding, cutting or machining. I am retired and this is my hobby and I try to share unwanted parts when I can. Transmissions are FREE. Bill Close, (602)524-5351

 

[TR3driver]

including "British Tranny". That one got a lot of interesting hits. Nice blokes, but couldn't help me with the gearbox.

.

 

[sp53]

I am not sure what you mean Randle. I have interchanged transmissions from the short starter 1958 tr3 to the long starter 1961 tr3 and only changed the flywheel and used the correct starter for the bell housing. The transmissions switched fine.
Steve

 

[TR3driver]

I have interchanged transmissions from the short starter 1958 tr3 to the long starter 1961 tr3 and only changed the flywheel and used the correct starter for the bell housing. The transmissions switched fine.

Both times that I have made that swap, the original transmission tunnel would hit on the starter bulge. You can ignore the problem of course and just let it rub; or what I did was put a few hammer blows into the rub spot, to create some clearance. No doubt using a later tunnel would work as well.

But there is enough variation between cars that it's quite possible some cars won't need 'adjustment'.

BTW the early starter & flywheel work just fine with the later gearbox. It's the other way that doesn't work so well. Easiest solution IMO is to buy a gear-drive starter to match your flywheel, as either starter will fit either gearbox. The gear-drive starter will also clear the headers that sometimes hit the early starter.

 

[Adrio]

I have taken the inside of an early tranny (non synchro first small bulge) and put it in a later tranny case (large bulge) and it worked fine. So it works that way too.

Before you ask, I did it because I wanted overdive in my TR4A and I had the parts to make it happen that way.

 

[DART]

UPDATE- unit is rebuilt...some from John at Quantum, some from a "good" used TR box. Shifts fine on the bench, but in the car 2nd hangs up sometimes and to varied degrees of stiffness. Sometimes have to bang hard with the heel of my hand, sometimes shifts with just a little stiffness. Has been out of the car 3 times, and can't figure out what the problem is. To refresh memories, the SP used a TR2/3 unit in the Daimler housing, and the reason for the repair was a chipped tooth on 1st.

Anyone had this problem??? Solution ideas welcomed!!! :madder:

 

[Geo Hahn]

When I got my rebuilt gearbox (I don't call it a tranny for reasons previously noted) from John E it was real reluctant to shift into 2nd. He suggested I just wait and see and indeed, after 500 miles or so it was fine.