Compiled Dynos, I was bored

[Scorp]

I have seen and heard the one you are talking about BigKel

 

[IMFASTTOO]

I have seen and heard the one you are talking about BigKel

WAIT now we have some others higher than that LOL

 

[Steel]

Here's a slightly modified Rocket motor we can add to the dyno comparison.

 

[Pablouk]

What was done to. Get those figures?

 

[Steel]

What was done to. Get those figures?

Not sure, but it is running a big turbo. It's one of the motors that Carpenter Racing built for the Streamliner. Really impressive considering its been destroked to <1500 cc.

 

[Joesmoe]

Just curious why you would destroke a motor, given the adage "There's no replacement for displacement." I remember in the old days -- talking 70's here -- and many Indy cars used Offy engines that had short strokes to get the RPM up.

 

[martym52]

Just curious why you would destroke a motor, given the adage "There's no replacement for displacement." I remember in the old days -- talking 70's here -- and many Indy cars used Offy engines that had short strokes to get the RPM up.

From my understanding it was to reduce the torque, the Rocket was too torquey to hold traction while accelerating on a salt surface. Also to get displacement under 3000CC's to meet class requirements.

 

[Pablouk]

What would it cost to get heads reworked and new cams, and what kind of power figures should you expect?

 

[Joesmoe]

@Pablouk this is not a direct answer to your question: you may want to look at these two sites for sources of work that have been done for a number of captains here:

Home - Neville Lush Racing

Carpenter Racing

In both cases, they are not close to you, and you would have to order parts, and either install them yourself, or have someone else do it.

There are a number of captains on this site who have done amazing things with their Rockets.

You could search on posts by @Trirocket3 and there are others closer to you who might have good ideas about going rates.

And a man has to DREAM. I know I've asked these questions too, and think for the most part my bank account will just not support this work. Still, there is great pleasure in the calculations, the visualization, even when not reaching the actualization.

I am curious though -- my understanding (constantly being disproven and revised) -- is that with the handling limitations of a trike, that is a less advantageous platform for performance upgrades. Perhaps you could enlighten me ?

 

[Steel]

Just curious why you would destroke a motor, given the adage "There's no replacement for displacement." I remember in the old days -- talking 70's here -- and many Indy cars used Offy engines that had short strokes to get the RPM up.

I hadn't heard anything about the torque that @martym52 mentioned, but it's possible. I did hear about the 3000 cc class limit he mentioned, since it runs 2 Rocket motors.