View Full Version : Wedge TR7 and TR8 Engine difference

06-17-2005, 02:56 PM
Hi all,

I am taking a test and one of the questions is, "What was different about the engine fitted in the Triumph TR7 and TR8?"

Any help?

Tom Laferriere

MGA Steve
06-17-2005, 03:22 PM
Was that a serious test? A TR7 came with a 2-liter, OHC, slant 4-cylinder and the TR8 had a 3.5-liter, OHV, aluminum V-8.

06-17-2005, 08:43 PM
Hi all,

I am taking a test and one of the questions is, "What was different about the engine fitted in the Triumph TR7 and TR8?"

Any help?

Tom Laferriere

[/ QUOTE ]

4 cylinders and a lot of giddie up and go. /ubbthreads/images/graemlins/grin.gif

Geo Hahn
06-17-2005, 09:02 PM
Gee Tom, I hate to doubt you but I see by your website that you offer car buyers "inspection from a classic car person, not someone that knows nothing about the details of classic cars".

From your question here and on the Jaguar forum you seem to be the latter category where British cars are concerned. My 80 year-old mother-in-law could name the 3 engines used in the XKE (the Jag question) and she certainly knows a TR8 had 8 cylinders.

If you are trying to learn more about British cars there are many here who can help you. If you are trying to promote your services you should look into the vendors info for this forum.

Not trying to be nasty... just not sure what you're up to.

06-17-2005, 10:12 PM

Welcome to the forum. I like your little collection, even if it doesn't contain any LBCs. I've always really liked Auburns, I also like Cords and Duesenburgs, but then again who doesn't? I can only assume from the questions you have posted so far that you are new to the world of British motoring. Well you can learn alot here and have a good time at it. So enjoy the place, and hope to see you get interested enough in the cars to add one to your collection.

06-19-2005, 12:03 AM
Thank you Walter, "mailbox", and Steve for your kind responses.

06-19-2005, 12:11 AM
Dear Geo Hahn,

Thanks for pointing out the fact that I am uneducated in British Cars, a fact most others I'm sure already figured out just by the question I asked. I am sorry my simple question offended you.

Your 80 year-old mother-in-law appears educated in British cars. That’s great. You must have some great conversations at the dinner table and car shows.

Yes, I am trying to learn a little about British cars. That’s why I am here asking questions that uneducated people ask. I did notice that many people DID help me, not point out mere facts.

I am not trying to promote my services, or anything for that matter, just asking a question about a British car in the British Car Forum, nothing deeper than that Geo.

“Not trying to be nasty?” Of course you are. Not sure what I am up to? I am just up to taking a test that had the previously mentioned question on it. No covert operations.

Best Regards,
Tom Laferriere

06-19-2005, 11:47 PM
Hey, don,t sweat it, dude. Sometimes we get a little ahead of ourselves and THINK everybody knows what we know and if you ask a question that we THINK is simple, we wonder what your motive is. No question is too stupid around here. Take my word for it. We all have come up with some humdingers. /ubbthreads/images/graemlins/grin.gif

06-20-2005, 05:55 PM
Hi Tom,
The difference is about 15 years of technology, and 4 engine cylinders.
The TR7 engine was developed in the late 1960's by Triumph for Saab to be used in the 88 series; an overhead cam 4 cylinder aluminum head on a cast iron block prepared in 2.0 liters. This was supplied in the TR7 with dual Zenith Stromberg 1.75 inch carburetors and later Bosch Fuel Injection. A Triumph V8 (not to be confused with the TR8 V8) was derived from this design first as a 2.5 liter (with fuel injection prototype), then as a 3.0 liter only with dual carburetors which was to be used in the Stag and Triumph Sedans/Estate wagons. The Triumph V8 was only ever used in the Triumph Stag.

The TR8 engine is a Rover 3.5 liter Aluminum V8 who's design came from General Motors in the mid to late 1950's as a pushrod overhead valve all aluminum block and heads design. GM sold the design to Rover & Land Rover as a base V8 which continued up to about 2003 after Land Rover had been purchased by Ford from BMW in early 2000. The TR8 pushrod engine was supplied both in ZS carburetors and Lucas fuel injection.

Hope that helps!

06-21-2005, 10:58 AM
Dear Glenn,

That helped alot! Thanks for taking the time to write that. You know your stuff.

Kind Regards