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TR8 Alternator

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"Richard Connew"

TR8 Alternator
« on: April 12, 2019, 04:19:30 AM »
Folks,

For years I've always taken the original alternator off my TR8

EFI to a local recon guy who has sorted it out and its gone back on the car

with new innards as required. Sadly after many years his business has now

gone so it looks like I need a new 25 ACR alternator. The wiring is the old

terminal type on the car where as the new ACR alternators all seem to be a

three pin plug fitting. Amazon have this adaptor plug

https://www.amazon.co.uk/dp/B07GJTB9ZK/ref=cm_sw_em_r_mt_dp_U_DJeSCb6FNR2WA

See this Alternator on Ebay https://ebay.us/mCZigo albeit an 18ACR. Manual

says 17ACR - 25ACR so maybe with a higher amperage 65 and the fact I don't

have AC this one would work.



Appreciate hearing what folk have done when replacing alternators?

Many Thanks



Richard

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Greg Gall

Re: TR8 Alternator
« Reply #1 on: April 12, 2019, 09:17:38 AM »
Hi Richard,



Many on this side of the pond have done the conversion to a Saturn CS130 of

CS130-D alternator.



Here is an image of a CS130-D, which is what I used in my TR8:



https://www.lectriclimited.com/media/wysiwyg/conversions_updates/alternator_c

onversion_500295.jpg



(Just found it on Google - not TR8-specific).



You will have to clock the alternator (rotate the face 120 degrees), swap to a

V-belt pulley and make a small adapter harness...



Greg Gall

Calgary, AB, Canada







Greg Gall

>

mark farver

Re: TR8 Alternator
« Reply #2 on: April 12, 2019, 12:25:26 PM »
Agreed, the Saturn alternator has worked fine for me.  I have a 1978 Preproduction Coupe with automatic and AC.  The alternator was sourced through Advanced Auto parts and is a made in China unit.  The V groove pulley was sourced through Summit Racing.  Chrome plated no less and the lowest price.



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Archives provided courtesy  http://www.triumphwedgeowners.org

"Richard Connew"

Re: TR8 Alternator
« Reply #3 on: April 14, 2019, 09:41:34 AM »
Folks one surprising fact came out of this and that is many owners don't

know what alternator they have in their TR8. To that end I think it would be

interesting to see what variants have which alternator.

The TR8 manual lists both the 17ACR and the higher powered 25ACR. The

easiest way to tell is if it's a plug into the back of the alternator then

its most likely to be a 17ACR and it its wires bolted by a nut then the

25ACR.

It would seem carb TR8's with no AC have the 17ACR and anything fuel

injection or with AC has the 25ACR.

Just interested to see if that really is the case?

Thanks



Richard

Greg Gall

Re: TR8 Alternator
« Reply #4 on: April 14, 2019, 11:19:49 AM »
My Canadian-spec 1980 TR8 without A/C had the wimpy 17ACR alternator. It kept giving me trouble!







Now has the CD130-D from a 2000 Saturn SL1 - good for around 90 Amp, I believe... Has been very reliable!







John - the Saturn CS130/CS130-D alternator uses the standard Lucas brackets (itbs a direct bolt-on conversion, however the pulley needs to be changed to V-belt and harness adapter needs to be made). Likely you have the older 70bs-80bs GM alternator in yours, if you have custom brackets.







Greg Gall



Calgary, AB, Canada







>

fosmith@aol.com

Re: TR8 Alternator
« Reply #5 on: April 14, 2019, 01:23:24 PM »
There's a third type alternator fitted to FI cars with A/C.B  The TR8

microfiche shows it as the "A" Type and it's rated at 75 amps.B



Interestingly (at least to me) there are two variants of this alternator - the

"Ducted Cover" and "Non Ducted Cover" Types.B  This refers to the plastic

cover on the back with the Ducted Cover type having a downward pointing tube

for the air intake. Non Ducted just has a grille similar to the others.B  The

Ducted Cover type was fitted from engine # 14E00462.B  The one in my car, Apr.

'81 build, is the original Ducted Type and is still working fine with no

issues at nearly 89,000 miles. Knock on wood! B B



Fred

DAVID MASSEY

Re: TR8 Alternator
« Reply #6 on: April 14, 2019, 01:27:13 PM »
It's nice to have more than you need, especially if there is no size/weight

penalty and the CS130 is just a bit smaller than either of the Lucas

generators.B  And you can get a replacement much more easily.B  Win-Win.



Dave