Supertrapp exhaust??????

[cew73]

Hi everone!
How do you tune a Supertrapp exhaust system?
kinda silly, i know! :oops:
I got a 85 200X from a guy and rebuilt most of it, :D and never put the back half of the system on until now, and don know how many disks to put on and how tight to torque tha screws :?: Anyone have any info :?:
thanks
cew73

[3WheelsForever]

On my 350x supertrapp you dont have to torque the screws very much at all. I have around 10 disk in mine but I also made a custom end cap for it. I'll get a pic for you tommorow.

[NOS_350X]

The less disks the more topend the more disks the more bottom end. As far as torquing them down i have never herd of that.

[cew73]

thanks guys :D
I should'nt have said torque!
I didnt know how compressed the disk should be or how much movement there should be.
Ill have to play with it .
thanks

[3WheelsForever]

Nos350x I think you got that switched around. More discs is letting out more exhaust so more power at the exception of a louder sound output. Less disc will give a lower sound output at the exception of a little less power versus more discs. You may be right but when i had only 7 discs on mine it didnt seem to have near as much power with my custom end cap and 10 discs.

[REDMAN225]

right...the more discs the more top end. less=more bottom. they also recommened a jet change if you are using more or less than 6-8 discs. also...more=leaner....less = richer.(this is all according to the directions)

[NOS_350X]

Yup i had it backwords. Thats what i get for using my memory, i shoulda looked it up.

[mad_max]

cew73... my bolts were stuck/hard to remove (particularly the bottom ones), I hosed them with liquid wrench, let them set and worked them out very carefully. When I put it back together I pit a little anti-seize on the bolt ends

Heres a pic of the supertrapp on my 85 250sx... I run 14 discs, K/N filter, airbox lid is hole-sawed and carb has a 140 main jet (stock is 130). It runs somewhat rich. I'm planning on jetting it down as I ride mostly on trails and pasture (little high speed throttle)

14 discs VS open end: the exhaust sounds the same.

[3WheelsForever]

Here is a picture of my Supertrapp Exhaust with a custom end cap I made for it. Right now its a little dirty.

[cew73]

Thanks guys!
Ill play with mine and see where she feels the best! :D
Ive got 10 disk in now and she feels good on the top end so far, but havent gone wide open yet!