I dont get it?!

[super90]

To sum it up my friends nearly stock 84 200x smokes my modified 86.

I still cant understand why his 84 is so much faster than my 86 is, his 84 has a DG pipe and thats all. The clutch slips alot and his top end is blown and smokes ALOT, but yet it can still blow by mine? Mine has a custom procircuit exhaust, K&N filer, 15/38 gearing with 20'' tires and maybe some engine mods, im not sure. Everyone says the 86s are faster than the older model 200xs but i guess not? With the stock gearing and 22s it was very very slow, alot slower than I though, so i got 20s and a 15 tooth front sprocket which helped alot but its still suprisingly slow, so with 22'' tires the 15 would only equal a 14 tooth.

Today he was ahead of me on a very very dusty dirt road and I got sick of it because he was doing it on purpous, so on the way back I decided to dust him and pulled out of a trail and he was nowhere in sight so I just d it down this long downhill dirt road. I was seriously pinned in 6th WOT and he passed me with ease.

I dont understand it? My X engine runs great, clutch is brand new, no smoke and has tons of power for a 200, but yet it gets blow away by a worn engine with low compression? Could there be anything done to this engine that would make it slower such as a low end cam or some other mod that I dont know of?

[erectordale]

my 87 200x is stock and I consider it slow there is a lot of little things that make them faster . my stepson's 86 200x with a fresh motor will blow by it with ease the 87 runs great runs but low on compression

[bigreddaddy]

That is what we need to know first, what your compression is.

[super90]

Thats a good question, I will get back to you on that when i can find a meter.

[bigreddaddy]

You can get a tester from an auto parts store for $15 or $20. Well worth the investment.

[84honda200s]

are you sure your friend isnt telling you all the mods ? maybe he had it bored out and some port work and stuff done. you know mods that cant be seen.

[3leggeddog]

heres my exoerience.some motors just flat out rip for no apparent reason.i had a 250r motor i bought of ebay.no port work,had a big carb,reeds,and a pt high rev pipe.absolutly ripped.it was unreal,when they get loose sometimes the run really strong for a short time.it's like the perfect storm,you find that tune,and man,things really run

[super90]

To tell you the truth, I dont think he even knows. The thing has sat since the origional owner bought it in 84', then he sold it to my friend for $550.00. Its in really good shape considering how old it is. It possibly could have engine work done, but I doubt it since hes about even with a stock 250ex and can keep up with a 300 pretty good. I can keep up to 300exs but just barely. My X has great accelleration but lacks the top end and it just dosent seem right, so ill get a compression gauge tomorrow and well go from there. Thanks

[Twilight]

I was wondering why you said the 200x barely goes 10mph in first gear. This time I made sure today by going against my truck, and in first gear I was hitting around 20-21mph.

I have to agree with the above poster. One of my FL250's went almost 20mph and was never used since 1983, but my own that I have had since 1997 that was always abused and beat, went up to 35mph *speedometer on that one* Could never understand why, just went with it.

Also my FL350, can out run a FL400 pilot and even one of the older Drakarts... its odd, I have never done anything but put a watercooled head on any of my machines.

Go fig

[200x350xtriz250]

I doubt it since hes about even with a stock 250ex and can keep up with a 300 pretty good. I can keep up to 300exs but just barely.

I could be wrong, but isn't a 300ex faster than a 250ex? if you can keep up with a 300ex and your friend a 250ex, doesn't that make you faster by default?
I agree with 3leggeddog some motors are just fast...I've owned 3 350x's and the first one I had had more power, torque, and speed than the other 2. when I took it apart to rebuild the top end there were no additional mods...put back together and it still ripped better than the other 2...no good reason

[ratvespa]

is his faster all thw way around? top speed and accell?
other question...and now to sound rude by asking..do you weigh more than him? a act70 with a midget on it is going to go faster than a atc70 with my big arse on it.

also, are you sure you got your jetting dialed in?
you could always invest in one of these goodies
http://www.daytona-sensors.com/WEGO2.html



they are killer for getting the carb dialed in

the data logging software is also really good, I use it to dial in the harley trikes I work on. only downside is you got to weld in a 02 sensor bung onto your pipe.

[riverrat]

Another thing that never seems to get mentioned around here when talking about speed of these machines is the tires, and tire pressure.

Adding some tire pressure can be a night and day thing as far as speed goes. But too much pressure, then you loose some grip.

For instance, on my 110, I had the original tires with 2 lbs of air in it. The brakes haven't worked on this trike for years, I never needed them, because as soon as I let go of the gas, and maybe tilt the thing a little, she would stop on a dime. Top speed was maybe 35? 3rd gear winded out, and sometimes into 4th. (in high range)

I put some new tires on it, and now I can't stop, and she winds out to 4th gear, and probably can hit 45, a 10mph difference. The new tires have 8 pounds of pressure (which is too much, cause now I don't have any suspension.) But I am just telling the story to show a point of how much tire pressure, and tire design can make on speed of a trike. These ATV tires when under inflated have tremendous rolling resistance. Also the hardness of the rubber can have something to do with it, as well.

Also like the other guy said, weight of the rider has a lot to do with it also.

[super90]

Alright, as for weight. He weighs around 230, not a lightweight, I weigh 175. His tires are the origional pro vector balloon tires and mine are stock 400ex radials. I run around 25 psi in all my tires usually unless im going on a real rocky trail that needs some extra cushsion. As for the 300ex, I mean that I can keep up in accelleration. I never rode with a 300 wide open anywhere but im guessing I couldnt keep up for long after mid range. His is faster mostly on top end but if his clutch didnt slip I wouldnt doubt accelleration also. I did consider all the things but really it just dosent add up. I even put some stock 22'' balloon tires off of my 110 on it and it couldnt pull 6th gear, then he still creeps by.

[BigGreenMachine]

Did you jet the carb for the pipe and filter? Airbox lid on or off?

[super90]

I think it was already jetted before with the cobra, because when I put the stocker back on it ran horrible. But it could possibly be the jetting. What are the stock jet sizes for the 86 200x?