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WILL IT WORK?
Posted: Sun Oct 10, 2004 8:25 pm
by vette76
I HEARD IF YOU PULL THE EXHAUST OFF A SPREE AND MAKE A CUSTOM HEADER FOR IT IT WILL RUN LIKE CRAP BECAUSE IT RUNS OFF OF BACK PRESSURE. IS THIS TRUE?AFTER FINDING OUT ABOUT THAT AIR CLEANER I GUESS ANYTHING IS POSSABLE.
Posted: Mon Oct 11, 2004 1:09 pm
by noiseguy
It will run like crap if you don't know what you're doing. It will also run like crap if you just remove it. Why, interested in building a custom expansion chamber and trying it? I have a design for you if so. Uses the stock downpipe as a replacement for the muffler. Haven't had time to try building it.
Posted: Mon Oct 11, 2004 8:43 pm
by Jerry
The Spree definitely requires a specific amount of back pressure. If you change the exhaust length, diameter or expansion chamber area, you have to tune the intake air and fuel mix, in addition to the compression. The bottom line is that it is simply not worth trying.
As I've stated before, if there were a kit that truly worked, it would be on the market and the designer would be raking in megabucks.
Posted: Sat Apr 09, 2005 3:02 pm
by MYSTERE1
it because of people like you that no body will make aftermarket stuff for our sprees. lots of mods work. i have done them. i wish i hade the money to invest in mass production of tuner parts. i would make a killing.
Posted: Sat Apr 09, 2005 7:27 pm
by vette76
lol.
Posted: Sun Apr 10, 2005 12:38 am
by Tippmann98
the funny thing is, he probably would.
Posted: Tue Nov 15, 2005 11:05 pm
by wickedSpree
I have mine running a straight pipe and it is fast as *.
Posted: Tue Nov 15, 2005 11:08 pm
by wickedSpree
I think it is running better with just a straight pipe
Posted: Tue Nov 15, 2005 11:47 pm
by burnt_toast
wickedSpree wrote:I have mine running a straight pipe and it is fast as *.
that wouldnt make sense. 2strokes require a balance of backpressure to run their best. with a straight pipe you lose all back pressure and performance.
Posted: Wed Nov 16, 2005 9:39 am
by noiseguy
A straight pipe shouldn't work on a 2-stroke. 2-strokes require a backpressure wave to close up the exhaust port to make them work. Now, if you terminated the straight pipe with a convergent cone down to 1/2" ID, that would be getting closer, but an awfully peaky torque curve.
Posted: Wed Nov 16, 2005 11:37 am
by vette76
i lost 3mph when i tried this.
will it work
Posted: Thu Nov 17, 2005 4:23 pm
by KillinSpree
If you knock in all of the baffles in the muffler parts and leave it just open would it give your spree any more power or would it just sound louder?
Posted: Thu Nov 17, 2005 5:04 pm
by vette76
if u take the baffles out it will give you extra power. but you must keep the 1/2 in. tail pipe.
will it work
Posted: Thu Nov 17, 2005 5:06 pm
by KillinSpree
How do you take the baffles out of the muffler without taking apart the acutal muffler?
Posted: Thu Nov 17, 2005 5:41 pm
by noiseguy
You can either drill 4 - 1/4" hole around the outpipe, or saw the back 1/4 (or so) of the muffler off.