95 Amp Alternator
March 19, 2017


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This is a follow up to the no brainer 55 Amp swap of 2007,to help get TR6's more electrical power
without having to rewire the entire car.  Not that there's anything wrong with that!

This is a Brand NEW bolt on replacement for the original Lucas 43 amp alternator
with a Bosch style 95 amp unit from an eBay rebuilder, BNR Parts, in California.  These are available
in a Rebuilt 55 AMP output at most major parts outlets if you request the Ford Fiesta "Bosch" version for 1978-1980.

BNR also make a 75 AMP Rebuilt unit that is competitively priced.  And they are listed under Triumph TR6.

Please note:  Update July 22, 2008

I have just discovered that some earlier TR6's may require some sort
of wiring modifications, so unless your plug and harness looks exactly 
like mine in the pictures below, there may be additional wiring work required.

So if you need an alternator for a different model year that my 1974, please consult BNR for an exact fit.

Please note Update January 25, 2012

With the ever changing listings on eBay, it is best that you search for BNR Starters on eBay and then select
the exact year and model of your TR6 (or TR8) from their Triumph listings.  Be sure to get the new or rebuilt
that will best suit your needs.  The 95AMP units are all new, the 75 or 55AMP units are all rebuilt as far as I know.

ALSO----I have no financial interest in this company.  I'm just a satisfied customers with two of their alternators on my cars

**** Viewers are warned that if they attempt any mechanical repairs or modifications,
or follow procedures referred to here, they do so at their own risk, and no liability will attach to me.****


This is the new and the original alternator. 


This is the rear view and as you can see, the three (3) wire connector will be the same.

The connector plug fits in exactly like the original Lucas unit.

The mounting position and adjustment are the same.

This little retainer is a great idea and it does fit perfectly over my stock plastic connector.  This alternator
apparently fits a few models, because I don't think that this was a Triumph clip, even on a Spitfire.

The pulley that comes with this look a bit too small, so I measured both for comparison.

This part is close enough.

Even this isn't too awful bad....

When compared to this.

This is a bad picture by yours truly.  The width at this point is .380" or 3/8".

It doesn't take a rocket scientist to see that the original 1/2" wide belt is going to have a problem fitting in the groove above.

Just a side view while some answers come in.

GregL from the 6-Pack Forum saves the day with this fan/pulley kit from Mr. Gasket (Summit Racing is where I got mine)

This shows what comes in the kit.

Now we're back to 1/2" width for the proper belt.

The new pulley is slightly bigger in diameter, but remember that we were only off by .400".

This shows the difference in the width a bit more clearly.

And the diameter is nearly the same.  By the way, the pulley goes on with this side facing against the fan.

The new fan and pulley are on, but the chrome is covered so I can apply a few coats of high heat clear to keep it nice and clean.

There it is.  Already to go, along with my new polished stainless adjustment bracket.  More bling to add up front.

The bolt used here is an 8mm 1.25.  It is NOT 5/16" coarse thread as I had thought.  I did get a different
bolt for this, which is a Flanged bolt.  It has a wider bottom to the bolt head and won't gouge up the new bracket.

This is sitting on the bench for the next few days waiting for the clear paint to harden before I install it.

This is the flanged bolt head after installation.  It needs no washers.

I had a few minutes after lunch today, so on it went.

The little clip over on the back snaps in place nicely to secure the harness connector in place.

The black rubber boot came with it and I added the white to protect what is probably a "hot" terminal.

This is the flanged bolt that I used in place of a bolt and washer.  Old GM ways are still in me I suppose.

I added a nyloc nut & lock washer to the back, even though the alternator housing is threaded.  Just like wearing a belt and suspenders.

This is a new nyloc nut and lock washer as well.

All done and it looks at home.  The chrome pulley and fan go together with the polished stainless bracket,
which is much heavier and stronger than the factory bracket.  That's not a bad thing, but it is one more thing to polish.

This will definitely make a difference with the TRF Halogen PL700 headlamps and the new seat heaters.

Fast forward to 2014 and I have finally installed a second 8 gauge wire from the B (+) Terminal on the
back of the alternator.  This is to help carry the load to the starter and battery, should the battery go completely dead.

The original stock 10 gauge wire will probably not last long under a full output of this alternator with a dead battery.

This is another look at it from the rear.

Additionally, this is a belt that works well and will clear the steering rack and cross support very easily.

With the numbers showing.

That's it for now and my buddy Lou from 6-Pack can stop reminding me to do this little addition.


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This site was last updated 03/19/17