1BEARMAN, does this place have a web page so that we can check it out? How did you find out about it, and do you know how much it is going to cost?
Thanks for any info.

 

Well, the shop vac is now missing a hose, lol.Actually, I managed to find an old hose so Mom's shop vac is safe, for now.
Anyway, I put it together tonite and gave 'er a try.I really can't say for sure if it's better or not.Kinda hard to measure.I do know it definatly doesn't feel any worse,anyway.
Maybe after a good run this weekend I'll know for sure.

 

I had such a riot today in Bergen (abandoned railroad outside rochester). I'm not sure if anyone living too far away wants to travel to Bergen, since there is not that much riding to do. But, it is highly concentrated fun.

I rode so far on two wheels once I was very scared. I spend a lot of time on too wheels now that I put on my light weight summer tire combo. I go over every hump in the trail doing a wheelie. I blazed a trail in a boggy flooded area (forest). I went over it again and again to make it visible. Maybe people will follow it and make ruts there too.

When I hit shallow puddles at 60, they don't splash me or get much water on the quad. I only hear a faint splashing sound. Since I set my toe in to 0", my handling is awesome at high speed.

I can slide all the way down the trail (alternating sides of course, on a straight trail).

My belt is loose still, even though I took all the shims out. It still does 63 mph, which is 67 (diameter correcting 26" tires against the 24.3" dia stocker tires). I wish I had a GPS to veryify speed.

I bet when I get my new belt on it will go even faster. YUMM! Lucky for me the deer seem to be running back to the thickets when I come screaming by. Hitting a deer on the 650 would hurt.

When I get into deep mud, I miss the mudzillas, since they have much better mud bite than either the sur tracks or the mudrunners. But, I had a hard time sliding, jumping and wheelieing with mudzilla.

 

I too just did the "Craftsman" Mod to mine. Makes a BIG difference all across the power band. Raised my uphill top speed from 56 to 60. Gets there a bunch quicker too! Didn't try it downhill. I could be imagining things but it seems like it made it quieter also. Probably because it's no longer vibrating the airbox as it tries to suck air through the 1.25" end of the factory snorkel.
I ended up cutting the length to somewhere just past the end of the rubber dam because I noticed an interference with the wiring at full lock. No water or mud here so the extra length is not an issue.
I'm trying hard to explain to the wife unit that this mod was free. She doesn't quite understand how it could be free if I now have to by a new hose for the shop-vac. Trying to make her understand this is almost as hard as making her believe that I need four tires instead of just two to replace the quickly balding rear Dooflops.

 

Fishhead

You would happen to have the part # for the hose you Bought would you???[img]i/expressions/face-icon-small-smile.gif[/img][img]i/expressions/face-icon-small-smile.gif[/img]

 

Monte,

I bought it from NAPA, I believe it was 7334 not postive, will check when I get home and post...

 

I got a chance to test my new intake riser at high speeds yesterday but was surprised to find that my top speed was lower by a couple of MPH, although it did improve my bottom end dramatically.
I attribute this to the fact that although the hose is bigger it has "ribs" in it which are probably causing alot of turbulance when she is really sucking. Therefoe I am going with Fisheads radiator hose suggestion as it will have smooth walls and smooth bends. I will report back when I have found and installed the appropriate piece of hose.

 

A lot of people live at a high enough altitude that their jetting is too lean after the airbox mod, and less restriction hurts overall perf. Maybe this is something you should consider.

 

<< A lot of people live at a high enough altitude that their jetting is too lean after the airbox mod, and less restriction hurts overall perf. Maybe this is something you should consider. >>


OK, I've considered it. I ride at 6500+ which means with no jetting changes I'm running rich. So any mods that allow more air into the system brings the A/F ratio closer to optimum.
I realize that the machines are jetted for sea level to 2000' and they're jetted slightly lean for emission considerations. Even with this lean setting I would imagine that they are very rich at my altitude and anything I can do short of re-jetting shouldn't do anything but help right?
FYI, Barometric pressure at sea level 14.7psia Barometric pressure at 6500' 11.6psia
Also rule of thumb altitude losses for N/A 4cycle engines 1.8 percent hp loss per 1000' altitude. Short of turbocharging or mounting a leaf blower on the air intake there is nothing that will correct this loss. So if every thing else is perfect my quad is only making 37 flywheel horsepower. I'm jealous of you folks that live near sea level.[img]i/expressions/face-icon-small-happy.gif[/img]

Or did you mean to say &quot;low enough altitude&quot;?

 

Good catch Wolly,
I was spaced when I wrote that, knowing that carburated things generally run richer at higher altitudes. I used to breath air at 12.5 psi, now that I am closer to 14.5, I could feel the difference until I grew accoustomed to it. My truck has lots more power here, just like someone added a gravity driven supercharger on it or something. I even have a masters degree in mechanical engineering, and have done a lot of coursework on internal combustion. However, I don't have much experience with these cv carbs yet.

What I meant to say to Prariedust is that depending on where his quad sits with jetting (and the weather to a certain extent), the airbox mod may have left his atv lean at the higher rpms.

Two people I know claim that they reduced their power by taking the lid off. Others I know of gained 7 mph in a test without the lid. Jetted correctly, every body should get just about the best performance with the lid off.

Anyway, Prariedust, I feel it is definitely worth investigating and fixing the jetting issue, since you really should be getting more low AND high rpm power with this mod, if the before and after were compared while jetted correctly.