89mm Revington Tr re-enforced liners and forged pistons with a milder hot cam and 2 or 4 fuel injectors 87,5 regular Piston/liners with a rally cam and 2 or 4 fuel injectors Very safe and pleasant to drive and very reliable. But now, after years driving a 200HP diesel daily car giving incredible low end torque, i find my TR much too lazy so i want to get more than just the stage 2 head i currently have.įor my new engine, road use, i am considering 3 options: There are some pictures from the Judson and Shorrock on my website.Ģ0 years ago i restored my TR3 with Revington full suspensions kits and anti roll bars. In addition this Shorrock Supercharger can gives much more PSI than the Judson.
And its vanes make no contact with the body off the Supercharger. The Shorrock is placed on the other side of the engine, so it can't heat up by the exhaust. I now almost finished building my TR2 with a Shorrock Supercharger with a 2" SU carb. Starting the engine takes a little while, because the petrol mixture from the carb to the inlet manifold is a little bit longer. Very stable idle speed, a lot of engine torque at low RPM. This is because the Judson is placed above the exhaust and the contact from the vanes to the body.Īlso is the Holley carb to small for the higher RPM range.īeside this, the drivability off the Judson is fantastic. How longer you drive, the Judson heats up. 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. The best option a tried is the Judson Supercharger. I dit a lot off experiments to power up my TR2. You can go different ways to power up your engine. Not sure how true that is, but I see that Moss has a nice supercharger set up for the TR3 (a bit pricey, but looks like it would be an option provided the bottom end can be built strong enough to handle the supercharger, and limit boost to 5-6psi).ĭrivetrain would be converted over to a 5spd manual, and a Limited Slip Differential, either a Quaife or Gripper to handle the added power (need to do more research on this). I've heard that the Judson supercharged TR3s were putting out close to 200hp. This will be a fast street car, and not a track car.
I haven't decided if Naturally Aspirated or Supercharged is the way to achieve these goals, but would like to keep redline at 5000 rpm.
What modifications would be recommended for the cylinder head? Target HP would be about 160hp (more if possible) I'd like input on larger Pistons (cast or forged), Connecting Rods (stock or forged), Crankshaft (stock, nitride, billet steel), how to strengthen the bottom-end 3 main bearings to make it strong, and reliable (bullet proof, if possible). Looking to get some input / advise on a 1961 Triumph TR3A that I am looking to rebuild the engine to make a fast street car.
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