Mystery Motor

Engine Oily Bits, Ignition, Fuelling, Cooling, Exhaust, etc.
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Rod 2500S
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Mystery Motor

#1 Post by Rod 2500S » Tue Apr 06, 2021 12:38 pm

Hi all can anyone throw some light on this 2500 motor advertised here in OZ
My guess is a mofified PI project.
cheers
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Triumph 2500 motor.jpg
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Re: Mystery Motor

#2 Post by Rod 2500S » Tue Apr 06, 2021 12:41 pm

and hopefully 2 more pics
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Triumph 2500 motor 2.jpg

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Re: Mystery Motor

#3 Post by Rod 2500S » Tue Apr 06, 2021 12:43 pm

final pic
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Triumph 2500 motor 3.jpg

johnnydog
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Re: Mystery Motor

#4 Post by johnnydog » Tue Apr 06, 2021 12:58 pm

It is a facelift 2500 engine originally on carbs and originally mated to an auto box (that's from the engine number), but I can't say what car the added injection parts are from.
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1967 Mk1 2000 in Gunmetal Grey
1969 Mk1 2000 in Royal Blue
1970 Mk2 2000 in Valencia Blue
1972 Mk2 2.5 PI in Triumph White
1973 Mk2 2.5 PI in Sienna Brown
1976 Mk2 2500S in Carmine Red

Rod 2500S
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Re: Mystery Motor

#5 Post by Rod 2500S » Wed Apr 07, 2021 12:23 am

Thanks mate
the bloke selling it doesn't have a clue and is selling it for parts only so he doesn't know if its a runner, and as its going to cost me maybe 700 quid to get it I really dont know.
Is the injection manifold a modifed PI unit????
It looks as if its set up to run on a stand.
Too much missing as well need the pumps etc. and where's the ECU??
Cheers

Jdowson
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Re: Mystery Motor

#6 Post by Jdowson » Wed Apr 07, 2021 8:20 am

Looking at the photos, the inlet manifold looks homemade with the injector bosses pointing to the back of the valves. The plenum looks homemade as well. Normally an efi conversion would have a single throttle body on the end of the plenum, not on the side as in the photos, as is, it wouldn't fit in the engine bay. The distributor looks as if it might have the engine position sensor fitted for the ecu, plus it has a coil pack for wasted spark again for use with an ecu. As you say you will need an ecu, something like megasquirt/microsquirt are reasonably priced, I'm using microsquirt on my conversion ongoing at the moment. You will also need a high pressure fuel pump/system. The basics look to be there to make a workable efi system.

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Re: Mystery Motor

#7 Post by Rod 2500S » Sun Apr 18, 2021 6:11 am

gday all
apparently it has an AC delco ECU which is GM so it maybe came off a locally built Holden commodore. Maybe!!!!!!!!!!!!!
too many maybes, but I know that someone in OZ has done this with Commodore bits before and made it work.
If your listening out there I'd appreciate some feedback
cheers

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