Dyno results hot off the presses!

[Dan Hodges]

Re: " i like big butts"

Well now you know my dear Florida friend,but I did this 20 years ago in addition to advancing them,retarding them and using early intakes and late exhaust because the late exhaust has .020 more lift,but the added lift cannot make up the difference in lost duration.The 78-79 cams are as big as the aftermarket stage one cams with a little less lift.They will really wake up an 80-82 motor,especially one that has a good exhaust.I'm glad you did the a-b dyno thing though so all our friends on channel 11 can take advantage of this easy swap.Like we said before,if you have a naked Eleven, these early cams are the hot setup for get it on Interstate blasting.If you are looking for around town cruising or riding on country roads or your Eleven is decked out like a baby Gold Wing then stick with the little late ones,but if blasting is what your asking, your choice is 78-79.Oh yes,the late ones will get better gas mileage just as Yamaha intended.They are smaller and don't eat as much.Thank's for the A-B test.

Originally posted by GNEPIG
.. well i was hoping for a bigger bottom end/mid range rush with the newer cams in my older motor, but it didnt happen. while my lines got straighter they also got lower. from the seat of my pants i could feel that it wasn't as fast as before, although i could tell that the bike reved up a little quicker, but i could also tell that that the power runs out faster. Dan Hodges was right, the bike doesn't want to go over 120mph now. maybe these cams could be good for better gas milage but i'm not going to find out. i knew i was going in the wrong direction by using these cams but i had to try. i will be putting the older cams back in tomorrow.
.. the numbers that i got today are not great but they are better numbers then when i started tuning this bike
i would have no problem with leaving these cams in and testing the gas milage part but i like how the bike ran before i changed them[its that seat of the pants thing, like how fast and how far my @ss slides back on the seat when i wack the throttle wide open]
.. this is a before and after picture, the dark blue lines are of a previous run = 85.25 hp, 65.32 torque.. the light blue lines are todays run = 82.68 hp, 63.19 torque
.. enjoy

[MAXIMAN]

Very interestng gnepig. One thing I've learned is this: Dan Hodges is kinda like E.F. Hutton...when he speaks...people listen.

When I got back from my road trip last month Zilla had been getting awful fuel economy. Talked to Dan and asked what I could do to increase my mileage. He said for a full dresser I wanted torque and to get maximal torque I should dial the intake cam up 5*.

I had been getting about 30 mpg at 85 mph on long road trips ...fully loaded with no head wind. A stiff wind would knock it to 25 or 26.

However on my recent venture (no pun) I was getting 25 and 26 at 70 or 75 mph. I was very disgusted. When in Carlsbad I pulled the plugs and #2 was white. So I figured something was up with the #2 carb.

When I got home I took the Maxim to my dealer and had him check it out. While he had it ... he slotted the cam sprocket and advanced it 5*.

He called me later and told me the main problem was the #2 carb slider wasn't closing all the way and we replaced it. That was the main problem with the bike. When he first put it on the dyno it was only making 49 hp!!!

But boy did the advanced cams help with low end torque. Check out this dyno run. Most Elevens exhibit the typicallow end stair step on the torque curve where the torque curve pre-peaks at 3000 or 3500 ...falls slightly then gains back out around 6000.

But after dialing the cam up it really lowered the torque development. Obviously it knocked quite a bit off top end but I don't ride the big Maxim that way. It is a road bike and where I need grunt is down low to launch the load of the 'behemoth".

I checked my mileage the day after. Now at 80-85 I'm getting 31 or 32 mpg. The bike now rockets to about 5500 and then levels off. It still climbs out to redline quickly but probably lost 3 or 4 hp on top. However the gain on the bottom was well worth the cam tweek for me.

This dyno is not meant to be impressive from a HP stand point. This is a bone stock Maxim Eleven.

Kudos to Dan the Man for the helpful tip!

[GNEPIG]

.. thats a pretty neat tip, i will have to try that one also.
thats a really good gain, but i dont think your dyno buddy should rev your bike so far past redline

[MAXIMAN]

Obviously the the gain was due not true since the #2 carb was screwed up.

Normally this bike would be making 75 or 76 hp. With the cam advanced it dropped the peak HP to 72. But it also shifted the torque curve downward and this is what we were looking for fo rlow end grunt.

Now I am debating a Wiseco kit for even more torque. But geez I hate to fix it if it ain't broke! This bike only has 20,000 original miles and the motor is pristine.

[GNEPIG]

.. it's back!. this run is todays, after putting the early cams back into my early motor. the bike feels real good again!
although the bike never idled so smooth before[with the newer cams in], but the way the bike runs now is just about perfect, to me anyway, i like that fat rush up to 3 grand

i brought the woman with me today, i forgot she had the phone with a camera in it, and yeah that's me.

[Shuriken]

Nice dyno results.

what does, "Why don't we d'do it in the road" mean?

[GNEPIG]

.. it's from a Beatles song,

[Shuriken]

Thanks. Which one?

Sure would like to ride an XS11 with numbers like yours. Would definitely peg the "seat of the pants" o-meter.

Can you keep the front wheel on the ground?

Ben

[Dan Hodges]

Originally posted by GNEPIG
.. it's back!. this run is todays, after putting the early cams back into my early motor. the bike feels real good again!
although the bike never idled so smooth before[with the newer cams in], but the way the bike runs now is just about perfect, to me anyway, i like that fat rush up to 3 grand

i brought the woman with me today, i forgot she had the phone with a camera in it, and yeah that's me.

Nice work my man as a 4% horsepower gain swapping out a set of stock cam's is not too shabby. The late heads flow 10% more than the early ones which equates to a 5% power gain,so putting one of these things in the ninety hp range with stock parts is not out of the question. Nigel Patrick say's his standard porting job is worth 10%,so one of these old creatures can be made pretty robust if a guy want's to spend the money.I can hear someone screaming now that you can never make one of these things run like a modern day bike and so be it,who cares.It's like comparing a 66 Mustang to an 06 Mustang,which would you rather have? Don't answer that,cause I don't want to know.

[81xsproject]

You probably do want to know. I'd take the '66 hands down When it comes down to it, any jackass with a pocket full of cash can go out and buy a Hayahusa. You own an 11 cuz its rare, has character, rides nice, is dependable, worth way more than you'd ever have to pay for it, and hauls way more ass than anyone needs to. Plus, it take skill, knowledge, patience, persistance, and the desire to ride something that doesn't look like it just fell out of a cookie cutter. Besides, you wouldn't get to chat with all these great people on a Hayabusa forum.

[Dan Hodges]

Originally posted by 81xsproject
You probably do want to know. I'd take the '66 hands down When it comes down to it, any jackass with a pocket full of cash can go out and buy a Hayahusa. You own an 11 cuz its rare, has character, rides nice, is dependable, worth way more than you'd ever have to pay for it, and hauls way more ass than anyone needs to. Plus, it take skill, knowledge, patience, persistance, and the desire to ride something that doesn't look like it just fell out of a cookie cutter. Besides, you wouldn't get to chat with all these great people on a Hayabusa forum.

You and I are on the same wave length and you said it better than I ever could.I laugh when people ask me,Dan what do you think that old bike is worth and my reply is always the same,it's not for sale,go get yourself a Honda.

[MAXIMAN]

Originally posted by dragxs11
I'll get back to you in a bit if I can get into the dyno.
80sg
1179 kit
mac 4-1
stage 1 jet kit
drilled air box
accel coils

Hey Matt!!!

Ever get the Kruz Missile in on the dyno? If ya did you might wanna go ahead and post the results now. (hehehehe)

Cause once I get this XJ1200 off the dyno I don't think you'll want to even bother...hehehe hehaheha HAHAHAHAHAHAHA!

Wiseco 1196 Kit
Motad 4-2-1
stage 3 jets
mod air box
Web cam
ported head
5 angle radius valve job
One16 oz can of Whupass Fuel Additive

[pggg]

Hey Max, high octane won't do anything unless the heads skimmed for more compression Is that Web cam street or race? Will you get away with no valvetrain mods? The pipe makes a difference if it's a good one, your 4-2-1 sounds interesting. Hopefully the 34mm CV carbs won't stifle any potential increase in horsepower

[MAXIMAN]

Originally posted by pggg
Hey Max, high octane won't do anything unless the heads skimmed for more compression Is that Web cam street or race?

I hope to gawd you know that "Whupass" additive is a joke . As far as I know there is no such thing. However in the realm of NASCAR some "good 'ol boy" is probably already marketing something like that.

I will be running high octane pump fuel since the compression will be up to 10.25 to 1. That should only be needed on hot humid Oklahoma days however.

The web cam is a stage two. It's not the full blown race cam but not the toned down street version either. Web requires heavy duty valve springs on this cam.

Here's the cam specs if your interested:

WEB CAM XS11 Specs

I'm not sure I know what you mean by "Valvetrain Mods". The the cam sprockets will be slotted and dialed in. No we are NOT going with Titanium valves as this project is strictly for more streetable...towing power and torque. I am not ...I repeat NOT going to turn my full dressed Eleven into a dragster.

[Dan Hodges]

whupass

Originally posted by MAXIMAN
There is in fact a so called secret whupass ingredient and it's called propylene oxide and it mixes well with gas and will add a bunch of horsepower when jetted properly.It is also deadly toxic and banned by NHRA and NASCAR.Of course I have never used it as that would be cheating and poor ol kind hearted would never do that.No,Moroso does not sell it nor does Billy Bob's auto part's and no Analine oil does not increase horsepower.

I hope to gawd you know that "Whupass" additive is a joke . As far as I know there is no such thing. However in the realm of NASCAR some "good 'ol boy" is probably already marketing something like that.

I will be running high octane pump fuel since the compression will be up to 10.25 to 1. That should only be needed on hot humid Oklahoma days however.

The web cam is a stage two. It's not the full blown race cam but not the toned down street version either. Web requires heavy duty valve springs on this cam.

Here's the cam specs if your interested:

WEB CAM XS11 Specs

I'm not sure I know what you mean by "Valvetrain Mods". The the cam sprockets will be slotted and dialed in. No we are NOT going with Titanium valves as this project is strictly for more streetable...towing power and torque. I am not ...I repeat NOT going to turn my full dressed Eleven into a dragster.