Viper exhaust....

There is three bolts on the silencer section in my viper exhaust, now I presume if I undo these and release the can, I can slide the silencer out, what can I expect to find?

 

Should be a stinger all the way through it (pipe with loads of holes in it)
This should be wrapped in fibre glass wadding.
Take SOME of that out to make the exhaust less restrictive

 

Ok cool, thanks bud.

 

1 its not fibre glass 2 its not restrictive its for sound reduction that's we hast the holes are for in the centre tube if you drill them holes bigger then it will Ber quiter

 

Sorry I'm typing on a tablet and it keeps fucking up

Its meant to say what the holes are for in the centre tube

 

Yes it is. It's fibreglass wadding, sometimes cotton but mostly fibreglass with cheaper pipes. It is restrictive because there's usually loads of it wrapped round the stinger, restricting the flow of the gases, less wadding gives the gases more room to fill before leaving the end pipe.

 

Yes it is wadding...

 

if you say so

the only thing you will achive from packing it looser is reduce the power the gases go straight out the end can if you loosen the wadding then yes you give it more space to fill instead of leaving the can which also affects the back pressure causing it to be more restrictive
the end can has 1 function which is to reduce the noise thats it

 

well I'm not after any more top end, just a nice crackle, it's a great pipe, just needs a bit o volume, but only a bit...

 

well messing with the packing will just make it quieter
and to be honest the vipers really arnt good pipes at all

 

Oh, so why are they quite exspensive, mind you, that means nothing, ok, new pipe it shall be.

 

price doesnt really come into it bud the yasuni z is out performed by cheap endy exhuasts on stock 50s but its still a expensive pipe the viper isnt really suited to any tuning at all its expansion chamber isnt really the right shape to get a decent pressure wave going it might give a bit more poke over a stock pipe as there restricted buts thats it i would think the bhp will drop quite quick over 5bhp with that fitted

 

never tried them so cant say what there like but i know for the same price you can have oxford but if id still try find some alpinestars cheap

 

sorry thought i was on the chat box then lol

 

Too many fingers in too many pies lol

 

what engine is in that model of sr ? is it the same as the older aprilia rally ? if it is i might be able to help you out with a leo vince zx pipe

 

It's a liquid cooled minarelli, year is 97, sr50 lc stealth

 

still doesnt tell me if its the same engine

 

SR50 PRE YEAR 2000 - Chassis number "ZD4R MZ" or "ZD4R LY" Yamaha Minarelli engine - Air box not seen, under left hand runner board.

 

well the aprilia rally uses a horizontal minarelli engine so im guessing there gonna be the same cylinder and head used on both models if its any good to you ive got a chrome leo vince zx for that engine