header lenth
#2
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RE: header lenth
[link=http://nimrifmodels.co.uk/setup.html]Base setup info[/link]
With the wrap to centre (wtc) I have heard you shove it in as far as it will go without the O-rings leaking!!! You should be looking for about 12,5" - 13,5" from the flange to the start of the convergent cone. If I remember correctly the Cooper comes in two types, one that will tune well on a wtc and one that won't....
With the wrap to centre (wtc) I have heard you shove it in as far as it will go without the O-rings leaking!!! You should be looking for about 12,5" - 13,5" from the flange to the start of the convergent cone. If I remember correctly the Cooper comes in two types, one that will tune well on a wtc and one that won't....
#3
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RE: header lenth
thanks ian yes this one is for wtc and deep v headers so should tune in ok thanks for the set u info
bentley
bentley
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RE: header lenth
The chamber you have is a normal pipe the WTC chamber has a shorter front cone.
I run my WTC setup 10mm back from were the O rings leek giving a length of 15" from the outside of the port. This is on a self mod 26zen running a MW3 just drops of pipe in a sharp turn.......
Running a normal chamber on a WTC header will give you a 16" pipe length at the least.
Go as short as you can without letting the O rings leak were the bend has been formed..
Running smaller props would need shorter lengths gepending on your setup. Good luck
I run my WTC setup 10mm back from were the O rings leek giving a length of 15" from the outside of the port. This is on a self mod 26zen running a MW3 just drops of pipe in a sharp turn.......
Running a normal chamber on a WTC header will give you a 16" pipe length at the least.
Go as short as you can without letting the O rings leak were the bend has been formed..
Running smaller props would need shorter lengths gepending on your setup. Good luck
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RE: header lenth
I just picked up a new pipe (need for speed) that has a header adjustment like yours. I am not sure I like the overlap of the header tube going into the pipe. I think I am going cut the tube 1/4" at a time, and test each cut, to get the tuned length that works best for the set up I am running. I* will probably buy a second header tube, in case my final cut went a bit to far. I am not sure, but I suspect the tube sticking into the pipe might effect the return wave duration or strength, and will most likely effect gas flow, so I want the header section cut off just past the last o-ring.
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RE: header lenth
surely cutting the header pipe is standard practice for any tuned pipe setup?.you trim a bit at a time till you find the right tuned length,you dont want lots of header pushed up inside the tuned pipe as it will restrict it.as far as i know you cut all headers to just after the last o ring so your idea is just standard practice not something new .
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RE: header lenth
ORIGINAL: martno1fan
surely cutting the header pipe is standard practice for any tuned pipe setup?.you trim a bit at a time till you find the right tuned length,you dont want lots of header pushed up inside the tuned pipe as it will restrict it.as far as i know you cut all headers to just after the last o ring so your idea is just standard practice not something new .
surely cutting the header pipe is standard practice for any tuned pipe setup?.you trim a bit at a time till you find the right tuned length,you dont want lots of header pushed up inside the tuned pipe as it will restrict it.as far as i know you cut all headers to just after the last o ring so your idea is just standard practice not something new .
Correct......
Glenn
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RE: header lenth
so it looks like i have the wrong pipe for the header im going to order a 100 deg header and that will fix every thing
is the lenth still going to be around 13"??? with that header
is the lenth still going to be around 13"??? with that header