KT100

Mike Robertson · Posted: Fri Jul 27, 2001 11:40 am Post subject: KT100

I'm looking at having a KT100 blueprinted. What kind of horsepower ratings are you getting on your dynos from different builders?

John Valerio · Joined: 24 Jul 2001 Posts: 650

quote:
Originally posted by MEgus:
I'm looking at having a KT100 blueprinted. What kind of horsepower ratings are you getting on your dynos from different builders?

I have 2 motors built by George at Powerworks
Engine A came back @ 21.58 horse power with 11. ft pounds of torque
engine b came back at 21.02 with 10.25 ft lbs of torgue. They are both "Old Style" motors. Each dyno is different. I would recommend George for any KT100.
If you want you can contact him @925.456.8811

thanks
John Valerio

Mark Dismore Jr · Advertiser Joined: 21 Jul 2001 Posts: 1099

quote:
Originally posted by MEgus:
I'm looking at having a KT100 blueprinted. What kind of horsepower ratings are you getting on your dynos from different builders?

Dynos are lame, results matter. Look at whats winning at your local track then go with that. My Dyno and your Dyno will give different numbers, so that is a bad way to compare builders. You just need to go with a builder who gives you good stuff and can answer your questions.

Andy Seesemann · Posted: Fri Jul 27, 2001 9:30 pm Post subject: KT100

Mark is completely correct, but better said, dyno numbers are very questionable. For example, a motor builder in our area was telling his customers that he was getting 10+ HP out of a Comer 80. A customer brought a couple of his motors in that had these type of numbers. When we dynoed them they read 6.9 and 7.0 HP. Every motor we have done has been in that range (6.7-7.0) and our motors are equal, if not better, than this builder's. We can set the dyno to read any numbers we like, but as Mark said, the stopwatch and the race results are what matter.

ANDY SEESEMANN
PITTS Performance

P.S. 21 1/2 HP from a KT seems a bit out of whack., it's probably more like 18.....

P.P.S. As dyno parts get older, results vary as well. The day after the motor did 7.0 on the dyno, our dyno quit and had to be slightly rebuilt, with new diaphragms, etc. That same motor then did 6.6 HP.

John Valerio · Joined: 24 Jul 2001 Posts: 650

Mark and Andy are right, Dyno's can be tweeked to show inflated numbers. Thats why I mentioned that all dyno's are different. Track time and the stop watch will tell you whats working. The strongest motor will mean nothing if the chassis is not set up. I felt I had the fastest motor all last year but couldn't buy a win till I figured out how to drive! Seat time Seat time Seat time. Last year we finished a distant 4th in the class this year we are racing for the championship!

good luck
John Valerio

Mike Robertson · Posted: Sun Jul 29, 2001 12:21 pm Post subject: KT100

Thanks.

The reason I asked, was that we don't have a lot of engines from different builders here. We had one blueprinted at Woljers and it came back just short of 15hp. I'd heard of a lot of people talking about 17 and 18. I'm looking for another engine and thought I'd find out what a few other builders are getting.

Even if Dynos are off, are they off by that much?

Mike Young · Joined: 19 Jul 2001 Posts: 33

Take a look at LAD Specialties in Bridgeview, IL. Don at LAD has been building KT100's for ages and everyone I talk to tells me how honest the guy is...that's why one of his motors sits on my kart!

Mike Robertson · Posted: Sun Jul 29, 2001 2:42 pm Post subject: KT100

Mike, Do you have his web site? What was the dyno rating on your engine?

John Valerio · Joined: 24 Jul 2001 Posts: 650

quote:
Originally posted by Andy Seesemann:
Mark is completely correct, but better said, dyno numbers are very questionable. For example, a motor builder in our area was telling his customers that he was getting 10+ HP out of a Comer 80. A customer brought a couple of his motors in that had these type of numbers. When we dynoed them they read 6.9 and 7.0 HP. Every motor we have done has been in that range (6.7-7.0) and our motors are equal, if not better, than this builder's. We can set the dyno to read any numbers we like, but as Mark said, the stopwatch and the race results are what matter.

ANDY SEESEMANN
PITTS Performance
Andy,
both motors were originally built by Buller for a friend of mine that ran circle track with the motors. When he had the motors freshned up prior to sale the dyno sheets were very very close to what I have now. I will agree with you that dyno's aren't always accurate. The only reason I have my motors dynoed is to help expedite the break in process.
John Valerio

P.S. 21 1/2 HP from a KT seems a bit out of whack., it's probably more like 18.....

P.P.S. As dyno parts get older, results vary as well. The day after the motor did 7.0 on the dyno, our dyno quit and had to be slightly rebuilt, with new diaphragms, etc. That same motor then did 6.6 HP.

Mike Young · Joined: 19 Jul 2001 Posts: 33

I didn't have my motors dynoed so I don't know how much power they are putting out. Don at LAD has been working on KT100's for a long time and his son is a consistant winner on the enduro circuit at a national level. They also munfacture some of the tools used by the major karting bodies to tech your KT100. There web address is www.ladspec.com Good Luck and tell Don I sent ya!

Mfloyd · Joined: 30 Jul 2001 Posts: 10

Dyno's are just a tool, the only way to learn from a dyno is take the same motor, make your changes, and try it on the same dyno again.

It has a hell of a lot more to do with the driver than motor. I ran with Mark Dismore SR. several times years ago, he was building my motors, but there was no contest. He knew way too much about clutch setup, tuning and the chassis for me to even compete against him. (and yes, I was running Comet chassis at the time too)

A strong motor helps, but it's only worth a few percent gain if everything is perfect.

Mike

Mike Robertson · Posted: Tue Jul 31, 2001 1:42 pm Post subject: KT100

Ahhh, I also figured out a few things.

I gound a KT100 that was dynoed with both a pipe and a can. 21hp with pipe, 15 with can.

That's the difference I think.

John Valerio · Joined: 24 Jul 2001 Posts: 650

quote:
Originally posted by MEgus:
Ahhh, I also figured out a few things.

I gound a KT100 that was dynoed with both a pipe and a can. 21hp with pipe, 15 with can.

That's the difference I think.

Big difference for sure!!!!!!!!

Mark Dismore Jr · Advertiser Joined: 21 Jul 2001 Posts: 1099

quote:
Originally posted by Mike Floyd:
Dyno's are just a tool, the only way to learn from a dyno is take the same motor, make your changes, and try it on the same dyno again.

It has a hell of a lot more to do with the driver than motor. I ran with Mark Dismore SR. several times years ago, he was building my motors, but there was no contest. He knew way too much about clutch setup, tuning and the chassis for me to even compete against him. (and yes, I was running Comet chassis at the time too)

A strong motor helps, but it's only worth a few percent gain if everything is perfect.

Mike

I always have to perform, because dad will take out the kart and beat my time if he questions me, and then it's a looonnnggg ride home!

Andy Seesemann · Posted: Tue Jul 31, 2001 8:58 pm Post subject: KT100

John,

Don't get me wrong, I think that dynos are a very useful tool. Look at Mike Floyd's post about putting a motor on the dyno, running it, then making changes and dyno-ing again. Dynos are merely another tool to be used, but they are not the "be all end all". We use both of our dynos every day at the shop, and we have learned a lot using them. It is ultimately on the track, with proper chassis setup and good driving where the real results show. There are many reputable builders out there. Find one that gives you good power and great service.

ANDY SEESEMANN
PITTS Performance

P.S. Mark,Jr., the bad part is it will only get worse. As your skills start to surpass your Dad's, he'll get sneakier. He'll still find a way to try to beat you. That's the edge that the "old guys" have...