Ran my bike on the Dyno Today - BB Kits weigh in please - Triumph Forum: Triumph Rat Motorcycle Forums
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post #1 of 12 (permalink) Old 09-07-2011, 01:32 AM Thread Starter
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Ran my bike on the Dyno Today - BB Kits weigh in please

I'd really like to compare my numbers with any BB kit conversion Thunderbird or any Storm that has been dyno'd. I didn't bother to dyno mine before so I have no idea of what kind of change good or bad that may have happened. So...

With Hogslayers, Dealer TOR tune, UNI foam filter
my rear wheel hp is: 71, torque 93lb. This was done in 82 degrees, 30% humidity.

So please weigh in and let me know where I'm at in the mix. Thanks!

---Daryl

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post #2 of 12 (permalink) Old 09-07-2011, 01:46 PM
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there is a magazine article somewhere that took a bird and dydo'd it, then had the BB kit installed and dyno'd it again then detailed the results. I can't recall the difference but i think it may have been 87 HP with the BB just not sure. I may have it at home and if i do i'll post back tonite. However, there is one thing i do recall, as it was an eye opener.....at 5500 RPM's there was a big jump in power difference between the 1600 and 1700. I don't remember what HP the 1600 was and what HP the 1700 was at that point, but i do remember there was a big difference there, something like 20 HP. i think it had tors on it both as a 1600 and 1700 too, but again i will have to see if i can find the article.
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post #3 of 12 (permalink) Old 09-07-2011, 01:59 PM
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Ok, i found the article. I think it has stock pipes, but the stats are as follows...


Stock........75 hp and 95 lb-ft torque

Big Bore...87.7 hp and 102.3 lb-ft torque

Then they go on to say....."The big difference though is at 6,000 rpm where the stock bike makes 66 hp and the big bore makes 84. That's quite a difference in the upper rpm (18 hp)". The stock engine's HP peaks at 5500 too.

By the way, all dynos read differently even if they are all recently calibrated, which they aren't always so there can be big differences between a bike dyno'd at joes garage and one at petes dyno center. Thats why yours said 71 and this aretile said 74. The important thing to note however is the bike was dyno's as a 1600 then as a 1700 ON THE SAME DYNO. So don't worry about the difference in your dyno and the article...as long as any comparisons are done on the same dyno you can depend on the results. Oh, and so i was wrong in my above post....it's a 18HP difference at 6k (not 5500) not 20. anyways, heres the article... http://www.cyclecanadaweb.com/articles/10679/
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post #4 of 12 (permalink) Old 09-07-2011, 04:52 PM Thread Starter
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That is a great article - now I have to really decide if it's worth the money - would I like it better? Undoubtedly - but will I like it $2,200 more? That I am not sure of - Human nature always wants more...

What I did do was drop off a parts list and blow up diagram of the BB kit to the pro shop and have them look at it - they might give me a cheaper install price as they are tearing down engines daily - in that article it made a point of how much trouble those guys had doing it the first time because it was...the first time...also this pro shop is used to hopping up engines without kits - they engineer their own kits and were telling me all this technical stuff they do (until my eyeballs rolled back in my head) and in effect they might be able to do exactly what the BB kit does, or even a little better and be cheaper than the kit - cuz I think as we all know - Triumph is very proud of their brand name and it shows in the price tag of their accessories. At any rate right now I'm just gathering information - and if my wife had a clue I was considering spending more money on it...she would one way my man-parts to a different continent.

---Daryl

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post #5 of 12 (permalink) Old 09-07-2011, 05:13 PM
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It depends on how you feel about the bike's power now, and two, how long you intend to keep it. It's a lot of cash, but if you keep the bike 10 years or more i thinks it's a must have and a relatively small amount considering how much enjoyment you will get from it over the long run if you keep it more than a few years.

I intend to make this my last bike, barring financial issues as i close in on my golden years here soon. I took the risk that i WILL keep it. But if financial issues cause me to sell it in a couple years and get a cheaper alternative like another speedmaster, i will probably be wishing i hadn't BB'd it. In other words, i think it's well worth it but not if you aren't going to keep it long enough to get $2k worth of enjoyment out of it. By the way, your quote of $2200 is high. Most paid around $1800, i paid $1750 total myself. But i bargained with him to get that. i think he quoted $1900 at first, something like that. I said how about $1700 and he said $1750 and we have a deal. But I got screwed out of a few things at that price, tho i won't go into how here. So i figure you are paying at least $300 too much. I've seen some say they paid around $1600.

One thing you can do which is what i did to save, take it in when the 12k service is due. that service includes valve adjustment which is a big part of the cost. have it done then and they don't have to do most of the 12k stuff, at least nothing engine wise because you are having a whole new top installed. So tell them to do the BB and change the oil and you can get away with about the cost of the BB and and oil change. The 12k service can go over a grand so it's like paying less than 1/2 for the BB kit depending on what you have them do of the 12k details besides oil and what thier costs are...etc etc....you have to do your own math depending on your situation, but i think you get the point here.
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post #6 of 12 (permalink) Old 09-07-2011, 11:52 PM
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Another option you can consider is to just do the cams, and not the whole BB kit.
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post #7 of 12 (permalink) Old 09-08-2011, 01:02 AM Thread Starter
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Good grief those guys "over there" are motorheads - makes our technical talks look like pre-school. That's what the guys at the motorcycle pro-shop I go to for my service talk like - they will whip out a piece of paper and cover it with little diagrams and math formulas until your eyes glaze over with incomprehension - however - that is the kind of knowledgible fellas I want tinkering on my bike. For now I will continue to enjoy it as is and work up a few side jobs and then count my pennies.

Daz that is a good point - gives me 6,000 miles to think about it and save for it - and yes I intend on keeping this bike for a long time. It is my first bike, and I researched the heck out of bikes before buying it and the ONLY other bike that really grabs me out there is...a 1700 Tbird so there ya go. I'm not entering my golden years - I'm turning 40 later this year, and while I have no plans to sell it - I would like to add to the stable at some point - but I'm going to have to convince my wife that another bike found it's own way into our garage and I just don't have the heart to tell it to "go home".

---Daryl

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Last edited by TBird Daryl39; 09-08-2011 at 11:27 AM. Reason: mistake
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post #8 of 12 (permalink) Old 09-08-2011, 01:12 AM
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Yeah that site does have some very tech filled posts, but they also have a lounge as well. I like both here and there, and usually find that if something wasn't covered on one site then chances are it was on the other.
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post #9 of 12 (permalink) Old 09-08-2011, 07:40 PM
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Hi Guys ..had mine on dyno yesterday
Stats on bike :2009 1600
: 25k
:Long TOR's mufflers
:K&n Filter {mod to fit right}
:Cat removed
Done on DYNOJET

Base Run :Bhp 79.8
:Torque 108.8
Mapped Tune Ecu :Bhp 81.9
:Torque 110.9
How Does that compare to other tests

/////// opps.... figures quoted are max TORQUE...
Torque @ 4700 Base run 88.6
@4700 mapped run 91.3
Hope that makes more sence
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Last edited by Sabber; 09-10-2011 at 03:52 AM. Reason: Add info
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post #10 of 12 (permalink) Old 09-08-2011, 08:03 PM
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