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TR2/3/3A TR3- Who offers a good alternator kit + starter

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H

hermanmaire

Jedi Hopeful
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I cant seem to find the search option on this website and I know these questions must have been asked quite a bit so bear with me here.

I would like to purchase a high torque starter. There seems to be a few on ebay, are these any good?

Also, who offers a good alternator kit?

Thanks
 
It's vital to get the correct model Hi-torque starter for a TR3A.

There are two options -

One suits pre TS50000 cars with the long starter motor and 91T ring gear.

The other is for post TS50K cars with the short starter and 90T ring gear.

Both fit, but a mismatched Hi-torque starter doesn't last long.

Viv
 
vivdownunder said:
It's vital to get the correct model Hi-torque starter for a TR3A.
Click to expand...
:iagree:
But I wouldn't trust the commission number to tell the truth ... there are lots of cars running around with "mis-matched" flywheels. For example, I have the later style starter & flywheel on TS13571L.

A friend of mine didn't notice that his early TR had the later flywheel and put on a 9 tooth gear-drive starter. It started the engine only about 5 or 6 times before the teeth were torn up so bad that it wouldn't crank at all.
 
The problem I have with most alternator conversions is they "patch" a high power alternator into the existing wiring. Maybe it works for most guys, but bolting an alternator up is half the challenge. IMHO, you need to replace the generator and control box wiring with properly sized wire, good connectors, and proper electrical flow. I have done one that used a hollowed-out regulator box as a "junction" to preserve the "look".... but it was more work than doing the mod without it.

High-torque starters are a wonderful thing. My suggestion is British Parts NW. Triumph rescue (british wiring) is great too. Great guys. Ebay is fine, but there is value in having a guy on the other end of the phone who will back his wares, offer support, and who has a reputation to uphold.

And yes - double check your flywheel.
 
TR3driver said:
But I wouldn't trust the commission number to tell the truth ... there are lots of cars running around with "mis-matched" flywheels.
Click to expand...

Ted Schumacher would not sell me a high-torque starter for the racecar, TS 22312, until I checked the flywheel.
 
It's straighforward to double check the ring gear for the correct model TR3A Hi-torque starter -

One for the earlier model pre 50K car is required if the ring gear is shrunken onto the flywheel.

If the ring gear is bolted onto the flywheel then the later post 50K model is needed.

Viv.
 
eschneider said:
The problem I have with most alternator conversions is they "patch" a high power alternator into the existing wiring.
Click to expand...
FWIW, my 1980 Chevy came with an 80 amp alternator, and the charging circuit wiring was actually smaller diameter than the original wires on my TR3.

And in some 20 years of running a 60 amp alternator into the stock TR wiring harness, the only problem I had was that one of the connections inside the original control box overheated and opened up. Once I removed the box and just joined the wires together, no further problems.

But I did have my high current add-ons (radiator fan, high power headlights, MSD ignition, stereo) connected to the alternator output with fairly heavy wire, before it joined with the original wiring harness. Next time, I will definitely use one of these
cn-1_s14.jpg
to form that joint; but last time I just used a 1/4" bolt and left it hanging in space.
 
Twosheds said:
Ted Schumacher would not sell me a high-torque starter for the racecar, TS 22312, until I checked the flywheel.
Click to expand...
So, what was the verdict?

Ted, BTW, is a great source of these starters. A bit more expensive, but from what I've heard, they hold up better to the rigors of racing. He's also one of the very few that offer them for the Stag. (Unfortunately, I've still not gotten mine installed to see for myself.)
 
TR3driver said:
So, what was the verdict?
Click to expand...

Early. But best to check!
 
TR3driver said:
...But I did have my high current add-ons (radiator fan, high power headlights, MSD ignition, stereo) connected to the alternator output with fairly heavy wire, before it joined with the original wiring harness. Next time, I will definitely use one of these
cn-1_s14.jpg
to form that joint; but last time I just used a 1/4" bolt and left it hanging in space.
Click to expand...

I searched for that terminal block immediately after I saw a car using one as a ground block. Might be british wiring that has them in their cat. So I ordered a few to use for a power block for accessories (~your list, + seat heaters - hey, I live in Maine) but also as a common grounding block. ISTR that I have red as well as black. But the car is still apart so that wil have to wait a while. paz
 
So after all my research I figured I was good to go and decided I would just source the parts locally to save on shipping.

So....... I just bought a Delco 7120 ( supposed to be the same as a Delco 10SI, right?)
3 wire ( 1 terminal on the back that says battery and 2 terminals that go to the internal regulator) with a internal regulator.

So all looks good but the triumph size belt is too large for the alternator. Now what to do? Is there a different model delco with the correct size pully ?

The alternator at UAP cost $130, this seems more than what other have paid.

Any info appreciated.
 
There were some farm and industrial applications of the Delco 10SI that came with a wider pulley, but you won;t find them at your local parts store. You have a couple of choices. One is to bore out your generator pulley (which has a 15mm bore) to fit the 17mm shaft of the 10SI. The other alternative is to find a local electrical rebuilder that would have a wide pulley to fit the 17mm shaft. Of course, if you find a local rebuilder, you would be best of just getting the unit from him, as I'm sure it would cost less the the $130 you paid. I think that price is a bit high.

As far as a starter goes, if you're not into originality, the gear reduction conversions can't be beat. I'd recommend Dr. Marty who sells on e-bay, but it looks as though he may have sold out the business to someone else.

Edit: This appears to be the new website for British Starters.
 
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