Matts Tikka
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Dynotest Yamaha SRX700 Tikka PPC damper with adjustable exhaust pressure. Completely stock sled 140.7hp/8100rpm. Tikka PPC damper with low exhaust pressure setting 147.3hp/8200-8300rpm. We are now building SRX700 mufflers for those customers who have already ordered. Will be building a few more dampers in the coming weeks which are not sold.
sounds good.
Cool.
Can you show how to adjust.
Can you show how to adjust.
Alatalo
New member
Very nice. Matts is little bit of a local legend, a reputable engine builder and a qualified dyno operator. I had some stock class dragrace sleds dyno'ed at his place back in the days...
As others said, a picture would be nice.
There was supposedly also a small run of SRX silencers manufactured the other year by another Swedish company called "Leaded Race Supply", (which seems to be a side business to Yamahacenter Östersund). I never did see it live or even a picture, put they posted pictures of the ones they built for the VMax-4 stock pipes:
As others said, a picture would be nice.
There was supposedly also a small run of SRX silencers manufactured the other year by another Swedish company called "Leaded Race Supply", (which seems to be a side business to Yamahacenter Östersund). I never did see it live or even a picture, put they posted pictures of the ones they built for the VMax-4 stock pipes:
yamalars
Member
I wonder how you adjust it.
yamalars
Member
Well, i've never seen one..but i think you adjust backpressure bye adding screws to some sort of a reversecone in the can outlet, more screws =more backpressure/top end power.
Works just like a smaller stinger dia. Your regular aftermarket can almost always have less backpressure than stock, so it won't hurt the motor, that's why they tend to loose top end hp/speed.
Backpressure builds heat, so you need to follow Tikkas recommendations as he develop theese in his dyno, or you be buying new pistons.
Works just like a smaller stinger dia. Your regular aftermarket can almost always have less backpressure than stock, so it won't hurt the motor, that's why they tend to loose top end hp/speed.
Backpressure builds heat, so you need to follow Tikkas recommendations as he develop theese in his dyno, or you be buying new pistons.
Good explanation.
It was a common trick for grass draggers to add a smaller diameter pipe inside the end of the expansion chamber.