SuzukiSavage.com - Print Page

SuzukiSavage.com
/cgi-bin/YaBB.pl
General Category >> Rubber Side Down! >> Dyno result?
/cgi-bin/YaBB.pl?num=1377062514

Message started by ylwf3vr on 08/20/13 at 22:21:37

Title: Dyno result?
Post by ylwf3vr on 08/20/13 at 22:21:37

So they gave me this when I got my bike.. Is this a fairly good result?

Title: Re: Dyno result?
Post by justin_o_guy2 on 08/20/13 at 23:47:27

Looks stock..

Title: Re: Dyno result?
Post by ylwf3vr on 08/20/13 at 23:59:30

Basically is, just added K&N air filter and dyna muffler. I didn't know what the baseline was.

Title: Re: Dyno result?
Post by justin_o_guy2 on 08/21/13 at 00:31:25

Well,,FWIW,I dont see how ONE dyno does anything.IMO,a dyno is part of the tuning process, run it, tune carb, or change intake/exhaust dynamics, run it again,, I am baffled as to why they needed a dyno on it.
Id be curious to know exactly what was said & what you agreed to. I think ya got date raped..

Title: Re: Dyno result?
Post by Greg on 08/21/13 at 04:54:28

I had mine done at a speed shop's grand opening. I have a drop in K&N filter, an NOS HD fishtail, and I rejetted. This is my result.

Title: Re: Dyno result?
Post by verslagen1 on 08/21/13 at 07:34:48

More important... how does the bike run?
seems like you might have a flat spot offa idle.

Title: Re: Dyno result?
Post by ylwf3vr on 08/21/13 at 08:41:57

657A7C7B6661506050687A763D0F0 wrote:

I didn't think the dyno was necessary.. but being this was the only shop nearby I had to succumb to it since they "insisted". All the posts I've read on here, everyone just did it themselves, but since I don't have the first idea on carbs, thought I'd let them do it. Another shop little ways away said $150 to just rejet.

Title: Re: Dyno result?
Post by ylwf3vr on 08/21/13 at 08:44:44

63706766797472707B24150 wrote:

More important... how does the bike run?
seems like you might have a flat spot offa idle.

Seemed fine on the way home.. but it was just a 10 min ride. I'm going to take it out today after work. At idle rpm sounds like its going up and down.. thought it was going to die at one point. But once it warmed up a bit, got a little better.

Title: Re: Dyno result?
Post by justin_o_guy2 on 08/21/13 at 10:10:47

Well,,if you dont learn to work on it,youre gonna spend so much at that shop youll be ahead driving,heck,you can afford a nice car instead of keeping them afloat,They Insisted? PHHHHT! I wouldnt walk back in there unless I had a lawyer with me,

Title: Re: Dyno result?
Post by Dave on 08/21/13 at 11:40:15

A bit off topic....but this is why I won't own a German car ever again. I have owned 2 VW Beetles (64 & 66), 2 VW busses (64 & 66), an Audi Fox (78), A VW GTI (83), and a BMW 320 with a carb....and I could work on them all. The last VW we had was a 99 Jetta Diesel.....and most of the stuff had to go to the dealer to be fixed. The transmission required a computer for even checking transmission fluid level....it cost us $ 83 to have a 1 - 1/2 quarts of oil put in the transmission. The cost of maintaiing a German car is no longer reasonable.....and financially I need something I can work on as I don't make enough money to pay the dealer to check my oil level.....same with my bike. That is why I own a carbuerated, single cylinder, air cooled, belt drive bike without electronics on it.

Title: Re: Dyno result?
Post by ylwf3vr on 08/21/13 at 12:11:40

162D2037262A31372C242936450 wrote:

I have 2002 VW Golf and yes.. everything has to be done at the dealer.. and it is no fun

Title: Re: Dyno result?
Post by Super Thumper on 08/21/13 at 14:16:46

I don't see why they needed to dyno a otherwise stock bike just because of an air filter and muffler change...a good tuner should have been able to get it right without a dyno run. The dyno tune is for more extensive modifications than that.

Now for some info on why a dyno is good for your bike's health

First of all In would like to thank Lancer for all the ideas and parts he has provided me. The information has been invaluable.

Also, Verslagen makes the BEST cam chain tensioner...I have one on my bike and no more cam chain slap....nice and quiet!

The following is taken from a local motorcycle dealer's web site that we are currently negotiating with to do all of our dyno tuning on our Super Thumper engines! They have the ONLY Dynojet 250i dynamometer in all of Vermont.

"A dynamometer enables a technician to precisely record motor performance. As the technician runs the motorcycle, the device records the throttle position, RPM, air-fuel mixture, output gases and power production. Because the testing is in a known, controlled environment the data is more accurate. The testing results are standardized, which enables tests to be compared, facilitating accurate adjustments over time.

Using a dynamometer, a technical can measure the full range of motor performance and can record more data points. When running a motorcycle in a street environment, the motor has little or no time to operate at the extreme low and high ends.

The dynamometer makes it possible to see what is happening inside the motor. It takes what’s happening inside the engine and puts it on a display. People will continually throw stuff at their bike to make it perform better, but don’t really know what it does.

The dynamometer has graphic displays that enable the technician to get visual feedback showing the exact effects of changes. The dynamometer reports air-fuel mixture and cylinder usage (Volumetric Efficiency) by RPM and throttle open percentage. Using this precise data, the technician can make tuning adjustments and immediately get feedback on the change.

When you tune, it’s tuned for the way the bike is running at that time. If you change something – your exhaust or your air cleaner – you change the way the bike is tuned. Even small simple things effect how the bike runs.

The dynamometer is also a good tool for optimizing fuel economy and diagnosing drive train issues.

Using the air-fuel data, the technician can optimize fuel efficiency without running lean. He can troubleshoot drive train issues by using a negative horsepower test, which measures rolling resistance caused by mechanical components.

The dealer's Dyno is a Dynojet 250i dynamometer equipped with an eddy current load unit to create rolling resistance. The unit enables technicians to simulate street riding by creating varying loads. Technicians can setup test ride scenarios or log winter break-in mileage after motor upgrades.

My personal bike is the test mule for ALL of our performance parts and is scheduled to be dyno tuned with a Harley Dyna muffler on it since it seems that is the most common muffler everyone here wants to put on their bike.

IF a deal gets done with them you will see a link to their web site on my web site and I will post results and a dyno chart here when (and IF) the deal is done.

I tried to work a deal with a Harley dealer in New Hampshire and they crapped out...didn't want to work on a non-Harley! Prejudiced don't ya think? ;)

Title: Re: Dyno result?
Post by justin_o_guy2 on 08/21/13 at 14:32:58

If they didnt do a before & after, thers no rational justification.
OHH,, except to steal some $$$

Title: Re: Dyno result?
Post by Super Thumper on 08/22/13 at 08:12:03

Funny how that works...huh ::)

Title: Re: Dyno result?
Post by Super Thumper on 08/22/13 at 17:14:49

Update on the attempt to negotiate a deal for dyno tuning at a local dealer.....spoke to the tech personally today, they have NO experience with Mikuni carburetors, they do dyno tuning on fuel injected bikes only so they declined to tune the bike HOWEVER, they gave me the contact info for an independent performance shop that has a Dynotech 250i dyno and they do performance work on ALL types of bikes including carbureted big bore dirt bikes! :) More to come.

Title: Re: Dyno result?
Post by Dave on 08/23/13 at 06:07:52

Superthumper:

For tuning your carb.....the O2 sensor and gauge is all you need to have, and you can adjust the jets and needle to make the most HP, run the smoothest, get the most mileage....by adjusting the mixture and knowing which way you need to change things for improvement.

If you want the most HP and a way to measure it as you change engine and exhaust parts, mufflers, headers, cams, etc.....then the DYNO time will show how things have changed and what adds HP and what doesn't. The DYNO also will also put numbers to what is happening....and provide a more accurate record than the seat of the pants testing can.

Title: Re: Dyno result?
Post by Super Thumper on 08/23/13 at 07:46:16

Thanks for the info Dave. That is why I will spend the $$$ for the dyno time...I want to see the numbers and charts. The dyno will also show how small changes can effect power and fuel economy that we may not be able to feel with the seat of our pants and quicker too.