k bryant
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posted June 18, 2004 10:20 AM
More miles, More HP, D's bike improves
Tested the D Man's 10 again today. Previously, with 2300 miles & Jardine Bolt-On, it made 150.6 hp, 74.7 tq.
Now with 4400 miles & BMC Race Filter (new & kinda wet), it's pumping out 156.1 hp, 77.0 tq. That's a 5.5 hp & 2.3 tq increase!
We did not run a back to back test with the stock filter re-installed, but I would venture to say that the miles have more to do with the additional power than the filter. But that is speculation and not hard proof. Fuel curve was very similar with it actually running a little richer from 3 - 4k rpm. That may have been from the filter being fresh and wet. Just the way the D-Man likes it. 
   
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supraman95mb
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posted June 18, 2004 11:26 AM
Interesting
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dreadlord
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posted June 18, 2004 11:47 AM
Was there any difference in ambient/room temperature from one test to the other?
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k bryant
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posted June 18, 2004 11:55 AM
The software corrects/factors that in. But additionally, the conditions were very similar. Same dyno, same operator, same rider, etc...
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worm~hole
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posted June 18, 2004 12:07 PM
not that it'd make any big diff to me, but how similar were the non-human conditions?
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k bryant
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posted June 18, 2004 01:05 PM
Very similar. You tryin to cause trouble? Ya know, if you got out and rode more often instead of living on the internet or chasing down the bad guys, ya'd be less of a trouble maker. Hang loose bradda!
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Hamilton
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posted June 18, 2004 01:22 PM
Kerry, forgive my ignorance....I specialize in that. Plus, I'm old.
When dyno-ing a motorcyle is the air/fuel mixtured measured? If so, does the stock map appear to be on the lean side?
Thanks.
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k bryant
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posted June 18, 2004 01:38 PM
Hamilton - no ignorance. Good question. The air/fuel measurement is a seperate attachment. We always run the "sniffer" when testing. On all the 10's I've tested so far (6 different bikes) they all run acceptable graphs on fuel. All within the 12.8 - 13.4 range. If you don't check the fuel curve/graph, you're kinda wasting your time.
D's current graph, compared to his previous graph, showed within .2 of what he originally ran. The only difference was the slightly richer dump from 3 - 4k rpm. But really nothing that would dramatically affect power. I believe that was from the new filter being somewhat wet from fresh oil.
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D
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posted June 18, 2004 03:27 PM
In all honesty the ol butt dyno was gonna guess 2 mebbe 3hp with the filter but I would have to agree about the mileage/breaking in thing (my 12 seemed to run stronger as time went on and it didn't even really break in til 1750 miles).
Got the nickle tour too - man there's just a whole lotta stuff goin ova dere.
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zx10Roger
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posted June 19, 2004 10:46 PM
Kerry said they take time to break in,all three of our bikes dynoed the same stock and seem to be close after several thousand miles.SWEEEEEEEEEET
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bovinespongiformencephalo
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posted June 20, 2004 07:30 AM
Doesn't the KLEENEX thing fuck up the A/F reading?
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swft
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posted June 20, 2004 08:55 AM
Just use a pair of surgical clamps and pinch the hoses, no worries.
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bovinespongiformencephalo
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posted June 21, 2004 07:20 AM
Darn KLEENEX sticks to my hose after I'm done pinching it.
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D
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posted June 21, 2004 07:35 AM
quote:
Doesn't the KLEENEX thing fuck up the A/F reading?
Good call - seems like it might huh?
Any drawbacks to removin the Kleenex B/S?
I know 636 blovk off plates work (and are cheap too).
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Dynosoar
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posted June 21, 2004 05:12 PM
Hmmm...
How come these new Dyno numbers were taken only two days after the originals and both were last October!?
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D
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posted June 21, 2004 06:40 PM
I believe he shuts the computer off after he uses the dyno set-up - that's all I can figure.
Cuz I sure as hell didn't have the bike last year nor did I put 2100 miles on in 2 days.
Weather conditions were pretty close both times.
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k bryant
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posted June 22, 2004 07:40 AM
Yes, we shut it down everytime. And there may be times when we don't run it for a while. Sometimes the operator brain farts and does not log/check the date before starting/ending the session. No mystery. Simple as that.
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salsa1
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posted June 22, 2004 08:34 AM
 Edited By: salsa1 on 22 Jun 2004 13:31
I am wondering if synthetic oil been used up to 4400 miles.? Reason I ask is I am presently pursuing of waiting 3,000 miles instead of 1500 miles before switching to synthetic to gain better break in of internal parts?? few more horses could be the difference.
I figure once ya put in synthetic oil any further breakin is nullified...
Just a theory but makes enough sense to me. My present plan is to wait till 3000 miles.
Can't hurt anything to wait ; have heard several times how an engine continues to improve and gain a few horsepower after 1500 miles; lots of folks switch to synthetic by then;too early for most horsepower? thats the question...
Thanks for any insight.
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D
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posted June 22, 2004 08:43 AM
I did an oil change just before both runs - I'm using semi-synthetic Motul 5100 10W40.
First oil change in the 600 mile range was with regular oil that the stealership used ( I think it was Golden Spectro non synthetic).
The next oil and filter change was at 2200 miles and then again at 4400 miles.
I find it hard to beleive that an air filter freed up 6hp and that is why I believe that the motor is still breaking in to some degree.
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rfish
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posted June 22, 2004 10:10 AM
how about a run , back to back, of stock filter vs. aftermarket. just wondering if its even worth buying an aftermarket filter?
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D
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posted June 22, 2004 11:27 AM
Mebbe KB will do that if he decides to go the a/m air filter route?
I can do it too but I don't wanna drag him back ta work on a weekend (I won't work nights again for about 3 weeks now - that would however give the filter time to "dry" out though - hmmm).
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k bryant
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posted June 22, 2004 11:37 AM
I'll be doing some fuel testing in 2-3 weeks, so I'll do the filter testing at that time.
D - You wouldn't have to "drag" me far. Can't recall the last weekend that I wasn't working.....
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D
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posted June 22, 2004 12:04 PM
Fine then - I see how ya are.
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D
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posted June 22, 2004 03:54 PM
Oddly enough, looks like I have Friday off (dunno how - don't care) - ya wanna try it?
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k bryant
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posted June 22, 2004 04:00 PM
Edited By: k bryant on 22 Jun 2004 17:01
Cool. Just change back to the stock filter. We've done enough runs on your bike where a true "back to back" may only change a few tenths from the previous runs seeing that everything else is basically the same (ie; dyno, operator, etc.)... Then again, I sure don't need much of an excuse to flog YOUR bike on the dyno if you want to change the filter here between runs!!!!
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