SXR best mods for an SXR for someone who doesn't want to use an aftermarket exhuast

[JD_WWI]

We're talking factory B pipe here. right?

 

[tom21]

dude i'm in the exact same situation right now. the guy from group k said that the pipe is harder on the crankshaft due to higher rpms. has anyone found this to be true? I mean ideally, would you do a group k kit (sleeper or big bore) AND a wet pipe? Also the presumed decreased fuel consumption of a group k kit seems good. honestly i'm kind of leaning toward the group k kit as well, even though you all say so much good stuff about the pipe.

the sxr sips fuel compared to my superjet. why would the rpms you actually run the ski at be any different from stock to fpp? actually I would think you would be giving it more throttle to get the performance that you want out of it with the stock exhaust vs less throttle for the same gain with the pipe.

hype.

 

[tom21]

yes sir, as far as I know there is no other wet pipe available for the sxr. and that will give you way more bottom end power and all around more power over stock.

 

[Zerfman34]

Well you asked a question and it has been answered. mark this post or print it out and hand it in the garage. my prediction, you will get the group K kit and think you have something until you ride a bone stock sxr with a wetpipe and then you will feel stupid. I had a drypipe with the ski when I purchased it and it was a pain. I have the wetpipe now for a few seasons and its set it and forget it. you seem deadset against it and you would be wrong. the pipe you had is a major pain, I would say worse than the drypipe for sxr. Dont believe all the hype, The only way a motor is gonna make more power then what you have now is more compression and or more capacity. compression is easy, mill the head, the other is a bit more work and money. No single bolt on will give you more seat of the pants increase in power than a pipe. get over your fear and listen to the answers that everyone is giving you. You will do the install, tune it and never touch it again.

yeah i'm in the exact same position. I need to just get the pipe and shut up about it. Has anyone experienced a pipe + sleeper kit (milled, ported, bored carbs)?

 

[JD_WWI]

I'm really starting to get the fever to get an SXR now.

 

[JD_WWI]

yeah i'm in the exact same position. I need to just get the pipe and shut up about it. Has anyone experienced a pipe + sleeper kit (milled, ported, bored carbs)?

see post 37, shonuff does.

 

[Zerfman34]

my bad. I should have asked specifically about the performance of that setup. Also is the carb re-jetting that Group K does sufficient for the pipe or will I need to re-modify my carbs when I put the pipe on?

 

[Shonuff]

As you know, it's never enough.

Your best bet is to go the Korn route and get a new lightweight hull, then you will scorch the water because you're riding a ski that weighs 100lbs less.

I've got the 850 kit. I then added a TDR waterbox, a wet-pipe, jetinetics charging flywheel, Solas mag pump, the Jetworks blackjack mod to the carbs, then an ADA girdled head pushing about 215lbs of compression, ummm . . . . what . . else. I think that's it. Oh . . . an MSD enhancer that I killed at the end of last year.

After that amount of money, it feels like it should be faster - it's fast as hell - it just seems like it should hit harder. But it's an SX-R. It's heavy and it's not really ported for gruntwork.

It's loads of fun and corners like a beast. (I've got rear sponsons that Korndog hates.)

 

[duckman1]

Or just buy an 1100 off me for a conversion and have everything, power, reliabilty, pump gas, and linear powerband....if your a closed course racer, run stock and spend money on handling mods. if your a play rider, your going to spend all kinds of money and have what? Kinda like drag racing against yourself all the time, fun for awhile, but then you realize how much money you spent. To each his own, I've spent countless thousands modifying machines for the past twenty years, I've had my stock spec machines smoke full limiteds in runabout and ski classes. Sometimes people just need to learn to ride. If your building purpose specific machines it's a whole new story, hate to try to backflip with a stock 650 SN...haha! I will say on all my past standups that have had a pipe have gotten much better fuel economy than my stock models of the same machines. Good luck with whatever you choose!

 

[cattledog]

good post duckman, ride more less bling

 

[djkorn1]

The pipe comes with the jets needed. Yes, they are bigger and it sucks down more fuel....but it rips wayyy harder. I have had my pipe on for 6 years and haven't touched it. (I've blown motors for other reasons, but the pipe has been bulletproof and I haven't touched a carb screw either).

I don't know anything about the carb boring...but I would get the head and flywheel done for sure.

 

[baxt3r]

dude i'm in the exact same situation right now. the guy from group k said that the pipe is harder on the crankshaft due to higher rpms. has anyone found this to be true? .

Do you run WFO all the time? How would RPMs in the middle of the powerband be different? Am I missing something?

 

[djkorn1]

Actually, the top end is a bit higher with the pipe, depending how you tune it. Also, the low end is better, and that snappiness is harder on the crank. Basically, he is saying if you make it faster, it is harder on the crank. His mods don't make it as fast, is what he is saying in a round about way.

 

[tom21]

I have a pipe, and milled head and the fpp jetting was too rich for mine. I am happy with the performance as it sits, its still not what I would like but I know that with more mods the reliabilty goes out the window. its been sunk numerous times and ridden hard and is still holding up. much better to enjoy it than constantly keep rebuilding the motor.