Robert Pickard
Well-Known Member
- Joined
- Dec 17, 2013
- Messages
- 2,694
I have a irwin pipe on a nova rossi 45, since i am new to the mod where do i measure and how long thanks
Did you try contacting Ron Shaw?I can not believe no one knows how to measure a O/B pipe length
Nice method ;-)I just use a metal ruler to measure from header to inside bend. This method does not tell you the actual length you are running the pipe but makes for easy measuring quickly and you can see if your pipe has moved from where you set it.
The wire method will work on any brand pipe. Let us know if you have any problems.Thanks Carl i do not have a ssp
Mark has a point, you should always use the manufacturers "initial suggested point of reference" because they most likely have done a lot of testing prior to selling their pipe. If they say to measure to the stinger, that is what I would do. If I were to manufacture tuned pipes again I would probably use the old P.O.R. method but that is just how I have always done it.Jim,
Isn't the tuned length from the face of the piston to the start of the stinger?
Probably a much better and more accurate measurement?
This is how we are measuring pipes now. We found out that this way helped
us make more power and RPM with a certain 21-Hydro pipe.
We were way too short with the older way of measuring.
Thanks For Reading,
Mark Sholund
The most accurate measurement would be from the piston face in the exhaust window to the middle of the "entire baffle cone length"; where it comes to a point. Two pipes that appear to be exactly the same can have very different tuned lengths when the total included angle of the baffle cone is considered.Jim,
Isn't the tuned length from the face of the piston to the start of the stinger?
Probably a much better and more accurate measurement?
This is how we are measuring pipes now. We found out that this way helped
us make more power and RPM with a certain 21-Hydro pipe.
We were way too short with the older way of measuring.
Thanks For Reading,
Mark Sholund
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