Triumphrat

skromfols

I'd be surprised if anyone would bother to put a stock Speedy or America on a dyno. Why bother? Most of us (or maybe all of us) wait until we've made changes and want to check the air/fuel ratio or claim bragging rites for what we've gained with our improvements.
+1 on what B02S4 said. You can see what mods I've posted, and prior to adding the 813 cams I was putting out just over 57 hp and 54.3 ft lb of torque. I haven't put it back on the dyno yet with the 813 cams and the stage 3 igniter, but I expect to be a bit over 60 hp.

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Stan
08 America, Bub slip ons, A/I removed, emissions "stuff" & air box removed, billet intakes, UNI Pods, rejetted, carbs balanced, intminators, Progressive 412's, 1" risers, seat modified by Spencer, TP USA Option 2 Igniter, 813 cams

Dartgod

Actually, B02S4's estimate was really close but I'm not surprised. He commented on my post that included an image of the dyno run: "Very strong numbers for a stock-cammed 865, congratulations. Both runs have a positive correction factor, probably as a consequence of high temps & low barometric pressure".
I had to look it up for some fact checking and "just shy of 60" is in fact 57 horsepower (I was thinking 59). SAE 1.02 and level 5 soothing. I guess these things are like fish, they get bigger with time.

B02S4

Stan, it should be somewhere in the 62 - 64 range...

skromfols

Thanks for the info. That sounds good. I've been very pleased with my America so far and expect to enjoy it even more with a few more horses. I enjoy being able to stay with much larger cruisers on group rides and earning respect for the America.

For what it's worth, Carlos at TP USA has been great to work with on my modifications. I would recommend that anyone who is considering performance modifications at least talk with Carlos. He really knows his stuff and provides great customer service.

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Stan
08 America, Bub slip ons, A/I removed, emissions "stuff" & air box removed, billet intakes, UNI Pods, rejetted, carbs balanced, intminators, Progressive 412's, 1" risers, seat modified by Spencer, TP USA Option 2 Igniter, 813 cams

locopony

You can get a power commander for the efi bikes. I like to make my own pipes. From chrome tips that you can get at automotive hot rod shops, baffles you can get from autozone. and adaptors that can be fabricated and welded in at any muffler shop. Usually pretty cheap. Costed me right at $100 for the last pair I had made for a friends bike.

Findlay13

With those modifications mine ran 56.4 hp[rear wheel] on the dyno.
Triumph quote 55 hp for the stock 865cc America[at the crankcase]

B02S4

Thanks for sharing, however dyno numbers without reference points aren't directly comparable...which model dyno, & was yours SAE, DIN, or something else?
How about the correction factor and smoothing?

Findlay13

I've got a piece of paper saying
CF:STD Smoothing:5
Runfile002 drf max power 56.4
Dynojet Research SERCO
Run typeRO.
run conditions23.38deg.C.
30.19in-Hg.Humidity29% STD1.00.
As recieved for AFR test.



In the words of my hero "Oddball" from the movie "Kellys Heroes"

"I just ride on 'em.I don't know what makes 'em work"

B02S4

Cool!

I presume it was a Dynojet.

You should know, however, that "STD" is the most optimistic of the correction factors and therefore will always show higher numbers than an SAE run.

PhilS

Getting back to the OP, I put long TORS and factory map on my early Efi. They sound great, and not too bad when ticking over or taking it easy, (like passing a police officer). Bike is definately more lively, seems to rev on further and easier, first time out with TORs I discovered my rev limiter (perhaps I was just enjoying the sound too much)

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08 Speedmaster EFI - The factory photoshoot bike - Birmingham England