TR6 DYNO Test of my TR6; Can you beat it?

[vettedog72]

856hp, huhhh? Ohhh /ubbthreads/images/graemlins/pukeface.gif

 

[Guest]

Stock? What temp and altitude?
I'd like to use something as a rough baseline, and this is a start...

 

[vettedog72]

Alan
It was about 65*F and around 320 meters (Atlanta, GA)
Stock except for a head shave and electronic ignition.

 

[Guest]

Thanks. I figure it's close enough to my 73 that I can use it as a starting point. That way I can work out $ per hp for the bits going in.

Or perhaps not - it might be too depressing...
/ubbthreads/images/graemlins/nopity.gif /ubbthreads/images/graemlins/hammer.gif

 

[TRED]

Heres the rwhp sheet for my TR6. One is just the motor and two are with a little nitrous oxide

 

[Guest]

This is the one with the dustbin lid turbo right? What's it got again, an SBC?

 

[sammyb]

Actually, that's not a bad number. Remember - Triumphs were rated at 104 Gross HP at the flywheel. Using a standard 15% driveline loss, that puts it at 88.40 RHWP. (And really, that number should be lower, because the alternator, fan, etc robs HP.) So you're basically making as-new HP in that thing!

To give a good baseline, C5 Corvettes were rated at 350hp, and they dyno at 300RWHP (+/- 8hp)

 

[Simon TR4a]

Thanks, Vettedog, for posting that information.
I have been gradually collecting graphs, facts and opinions for an article for our (Triumph) club magazine, so your graph is appreciated.
As Sammy points out, that's not too bad for basically stock; do you know your actual compression ratio? And was the curve corrected for standard atmospheric temperature and pressure?
My TR4a made 91rwhp and 110 lbft of torque, average of 2 runs, about 4 years ago. I now have about 100rwhp and 115 lbft of torque, after spending much money on a cam, bigger valves, lightweight lifters, chromemoly pushrods, electric impeller fuel pump etc. but can't find the print-out so I will have to try again when I get the rebuild finished.
Most of the stock"ish" TR6 curves I have seen peak at around 90rwhp, so you're in the ballpark, but your torque curve might be slightly low, perhaps.
Thanks again, Simon.

 

[swift6]

That torque curves match what I've seen on stockish cams.

Here is a comparison of my car (blue), while I was having carb problems, compared to a stock (red) internal engine with all the "bolt ons" (K&N's, Monza Header and Exhaust, Crane ignition etc...)

Yes, my engine has a very broad and pretty flat torque curve. It's very fun. /ubbthreads/images/graemlins/grin.gif


Sorry about the size on that one.


/ubbthreads/images/graemlins/cheers.gif

 

[Rabid_Dolphin]

[ QUOTE ]
Thanks, Vettedog, for posting that information.
I have been gradually collecting graphs, facts and opinions for an article for our (Triumph) club magazine, so your graph is appreciated.
As Sammy points out, that's not too bad for basically stock; do you know your actual compression ratio? And was the curve corrected for standard atmospheric temperature and pressure?
My TR4a made 91rwhp and 110 lbft of torque, average of 2 runs, about 4 years ago. I now have about 100rwhp and 115 lbft of torque, after spending much money on a cam, bigger valves, lightweight lifters, chromemoly pushrods, electric impeller fuel pump etc. but can't find the print-out so I will have to try again when I get the rebuild finished.
Most of the stock"ish" TR6 curves I have seen peak at around 90rwhp, so you're in the ballpark, but your torque curve might be slightly low, perhaps.
Thanks again, Simon.

[/ QUOTE ]

Or the F-Bodies that are rated at 305hp but generally put down over 310. /ubbthreads/images/graemlins/laugh.gif