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Standard Vanguard Sportsman engine and the TR3

HalLucy

Freshman Member
Country flag
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Hi Everyone,

I recently bought a barn-find 1949 Triumph 2000 Roadster off of eBay. It needs a lot of work. It was clear from the pictures on the listing that the car did not have the original engine. Except for the valve cover and the thermostat housing it looked like a TR3. Now that I have to car, I have found that it is from a Standard Vanguard Sportsman. https://en.wikipedia.org/wiki/Standard_Vanguard says
the Vanguard Sportsman ... was announced in August 1956 with a tuned 90 bhp (67 kW; 91 PS) engine having similar features to the Triumph TR3 sports car. These included an increased compression ratio to 8.0:1, twin SU carburettors, and improved pistons. However, the Sportsman's inlet manifold and carburettors sat at a different angle from those of the TR3, and its engine had the same 85 mm bore as the Vanguard's, not the 83 mm bore of the TR3.

Does anyone know about these engines? Will TR3 parts work?

Thanks.

49147992251_9f66e2cd1d_o_rot.jpg49148012591_4535495743_o.jpgengine_number.jpg
 

dklawson

Yoda
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My friend Jamie sent me the following message after reading this thread.

" It's a Vanguard engine with some TR3 parts added, but bearings, hardware, cylinder liners, etc. are all interchangeable with TR3 parts. Head is slightly different but my understanding is that a TR3 head will fit...it may even be the same casting machined differently. Major difference is the intake, compression ratio, and that it's 2,088cc not 1,991 or 2,138. I don't know if it's crank difference but my guess would be bore size since that's how they got below the 2L limit for the TR3.... "
 
OP
HalLucy

HalLucy

Freshman Member
Country flag
Offline
My friend Jamie sent me the following message after reading this thread.

" It's a Vanguard engine with some TR3 parts added, but bearings, hardware, cylinder liners, etc. are all interchangeable with TR3 parts. Head is slightly different but my understanding is that a TR3 head will fit...it may even be the same casting machined differently. Major difference is the intake, compression ratio, and that it's 2,088cc not 1,991 or 2,138. I don't know if it's crank difference but my guess would be bore size since that's how they got below the 2L limit for the TR3.... "

Thank Jamie for me. Please ask him if he knows whether a TR3's starter will work.
 

dklawson

Yoda
Offline
Thank Jamie for me. Please ask him if he knows whether a TR3's starter will work.

I have extended your thanks.

Jamie said that he installed a TR3 starter on his Sportsman and it worked for him.
 
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