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Triumph TR4 - Wikipedia
https://en.wikipedia.org/wiki/Triumph_TR4
Triumph TR4 race preparation. Engine and gearbox rebuild ...
https://www.cckhistoric.com/triumph-tr4-race-preparation-2/
That includes engines and gearboxes. The black and red Triumph TR4 of Dave Griffiths has been undergoing some winter prep ahead of the 2019 season. The engine has been freshly rebuilt with a brand new cylinder head from a new iron casting. Additionally, we’ve changed the camshaft profile to make another jump in power.
1962 Triumph TR4 Restoration - Brian Sanborn
http://brian-sanborn.com/TR4/Engine_Rebuild.htm
With many improvements, the base Vangaurd engine, with a displacement to 1991cc, was used for the TR2 and TR3 and then displacement was increased to 2138cc for the TR4. The TR2 and TR3 used a 83 mm piston/liner set and the stock TR4 used a 86 mm set. The popular thing to do today is to use an 87 mm piston/liner set.
Triumph TR4 Racing
http://www.tr4-racing.de/index1.html
The triumph TR 4 had already become technically outdated when shown to the world the first time, compared to other cars at that time. Many comparable sports cars could offer more engine performance and a better suspension. In Europe the TR 4 was inserted into different Rallye's with moderate success, but "it brought triumphs in" in the USA.
TR4A – Triumph Club – Vintage Triumph Register
https://vintagetriumphregister.org/tr4a/
There was talk of punching this out from 87mm to 93mm bore to give a 2499cc dry liner engine, to provide an adequate jump in power from the TR4 to TR4A, but the prototypes didn’t give the hoped-for results. So the 2138cc engine was given its final boost, to 104bhp at 4700 rpm. The TR4A was phased in smoothly at the beginning of 1965.
TR4 Engine – Team Triumph: British Automotive
https://teamtriumph.com/collections/tr4-engine
Performance Steering Suspension Misc. TR250 ... # 622352 NOS Triumph TR4-TR250 Door Mirror Assembly. Regular price $75 View # 622279 NOS Triumph TR5 Bonnet Badge ... TR4 Engine Sort by # 55971 NOS TR2-TR3-TR4 Crankshaft Sprocket. Regular price $40 ...
Engine Restoration and Performance Parts for your Triumph ...
https://mossmotors.com/triumph-tr2-3-4/engine-performance
Moss Motors offers a full range of replacement engine parts and performance accessories to restore or upgrade your Triumph TR2, TR3, TR4. 1-800-667-7872; 1-800-667-7872; Help Center; Free Catalog; Menu Search. Account. Cart (0) (0) Recently added items. You have no items in your shopping cart. Shop By Model ...
TR-4 Engine Build (Spring 2009) - tonydrews.com
http://www.tonydrews.com/2008-9Rebuild/2008-9_Rebuild-Engine_build.htm
Triumph TR-4 Engine Build Spring 2009 Disassembly Engine Build Engine installation (click on any of the thumbnail pictures below for larger pictures, "back" to return) This assembly goes along with the "engine building tips". Start of assembly - bare, clean block Press in main bearings, coat liberally with Redline assembly lube.
TR3A Performance Engine Rebuild Advice - TR2/3/3A/3B …
https://www.tr-register.co.uk/forums/index.php?/topic/67345-tr3a-performance-engine-rebuild-advice/
The TR engine with a Judson produce about 40 % more HP with 4-5 Psi pressure, but this is only archived when the Judson is at low temperature. How longer you drive, the Judson heats up. This is because the Judson is placed above the exhaust and the contact from the vanes to the body. Also is the Holley carb to small for the higher RPM range.
Triumph TR6 high-performance motor
http://www.hottr6.com/triumph/TR6motor.html
A really nice streetable motor will cost around $5K, and from there it can reach $15K in a big hurry (ask me how I know!). Still, it is cheaper than a Jag straight-6. Note on engine swaps: A lot of people drop small-block V8s into their TR6. This is certainly cost-effective compared with building a manly straight-6.
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