Got Spanked Today by an '09 XP 800

[kinger]

The old addage fast and reliability dont belong in the same sentance! I think a well set up boosted 4S is the exception. Heck even a well set up NA yamaha is a screamer and no issues running 15K like that!

Still want to ride a XP though

 

[Blue Dave]

Like I said, I rode his XP before it blew up and I was impressed. Again I am not sure how much was gained with the shaved head but he certainly had the clutching spot on. I would really like to race a stock one now.

Most of the time "fast does not last", and in this case it seems to be true. My Apex with just clutching & studs can beat most sleds out there and I know which end of the tow rope it will most likely be on.

 

[MCApex44]

Good stuff Blue Dave! The Apex lives to ride another day.

 

[welterracer]

I bet if you had removed your transfer rod you would have killed him the whole wayl..

 

[vmax80096]

The sad part of all this is how much do you really think that the head mod helped....been there and done that with a good running 800....comes down to the simple fact that they are the same hp and 150lbs lighter....they are going to get out on you everytime.

 

[SledFreak]

The sad part of all this is how much do you really think that the head mod helped....been there and done that with a good running 800....comes down to the simple fact that they are the same hp and 150lbs lighter....they are going to get out on you everytime.

No, I disagree.... It's traction.. Light or heavy, it does not matter.. It's all about how good you hookup.... Unless all variables are the same and you are on ice, then yes the light one will prevail if the weight transfer is there...

 

[Blue Dave]

I do believe that it was mostly a traction issue. After the initial jump we most always stayed about the same distance apart up to about 100 mph where he would let off just as I was starting to gain a little bit.

I won most all of the roll ons from 40-50 MPH to 100 + MPH. The Apex definately has longer legs on top but not nearly as much traction from a dead stop as the XP 800.

I honestly do not know how much the head mod helped him in the races but I would bet that it helped the engine blow. For me fast is nice but reliability is more important and I have heard a lot of bad stories about the XP 800 reliability.

 

[journeyman]

Like I said, I rode his XP before it blew up and I was impressed. Again I am not sure how much was gained with the shaved head but he certainly had the clutching spot on. I would really like to race a stock one now.

Most of the time "fast does not last", and in this case it seems to be true. My Apex with just clutching & studs can beat most sleds out there and I know which end of the tow rope it will most likely be on.

I used to own a 1997 SX600. That sled originally had kind of low compression due to a thick head gasket at 1.4mm. The aftermarket outfits like Hauck's used to carry thinner ones like a 0.8mm and a 0.6mm, the latter needing to run the highest octane available. I ran the 0.6mm in mine and it REALLY woke that sled up big time........but if you were not careful with the fuel it could pop. I never did but the guy that bought it from me did on his first ride. Another person I know popped his too with the thinner gasket in. So my point is, thinner shaved heads on a 2 stroke can really make a difference.

 

[SledFreak]

Yes, he will have a hard time living this one down. He will be hearing me telling that story for many years to come!

Since the Doo dealer did the mods my buddy thinks that they will warranty the engine repair. I told him good luck wth that!

Even a good dealer will have a hard time hiding a cut head... He may get everything else replaced, but I doubt it, since BRP will want to see the head and they will see that it was played with.... He would have been better off putting an after market head on it... Then he would have gotten everything replaced...

 

[Blue Dave]

Well we will see. It is at the dealer now and he is hoping to have it ready for our next trip in two weeks. I told him to make sure that they fix it good enough to last the entire weekend but I will bring my tow rope with just in case

 

[SledFreak]

Tell your buddy this... I have moded enough ski-doo's that they just don't last... Most Doo engines are at the peak and cannot handle to be purshed to the limit... The only modded engines that were durable were the Rotary valve engines. The new series 3 is junk and not that durable in stock forum. When modding those motors, it's not if it will blow, but when it will blow. It won't take long either... It also does not matter how good the engine builder is, the tolerances are just not there to alow for modifications and to be squeezed...

Currently the only two stroke engine, I would mod is a Cat lay down motor. They respond well to mods and seem to be very durable, even though the rest of the sled is junk...

 

[1xr]

I have ran 4 different 800 r's. I can pull them all hard in the top end. All races were on a hard surface. Three of them I raced from a stop. They all had more studs than I did. I just have 48 for now. They would get a 3-5 sled had start, by 90-100 I could catch them and pull a lenth or two to 3-4. I run 3 at a time.
Last year I could just run with a 800r at the top. All I did was add dragon flys, 14" track and a hidle single pipe. With a airbox mod that I had last year.
I'm happy with it. I wonder how much more I would gain with a pc111 and the timeing box?

 

[niko]

Drop 50 pounds and there would be no contest the apex would kill the xp every time, remember 150hp 2stroke is not the same as 150 four.

 

[SledFreak]

I have ran 4 different 800 r's. I can pull them all hard in the top end. All races were on a hard surface. Three of them I raced from a stop. They all had more studs than I did. I just have 48 for now. They would get a 3-5 sled had start, by 90-100 I could catch them and pull a lenth or two to 3-4. I run 3 at a time.
Last year I could just run with a 800r at the top. All I did was add dragon flys, 14" track and a hidle single pipe. With a airbox mod that I had last year.
I'm happy with it. I wonder how much more I would gain with a pc111 and the timeing box?

Add another 100 studs and I bet you beat them from the start.. 48 studs will not do a thing for an Apex.

 

[Chiroguy]

still trying to figure out why top end only showed 108. no studs? 136 track? weight issue? 1500 miles? regular gas? the dealer just went thru it this fall. feedback?