Header pics

kzz1p wrote:

mark1122 wrote:

Does anyone have any info on building a pipe? can one be bent with normal pipe bending equipt? or does it require specialty stuff?
I took my Kerker to a muffler shop today. they said they couldn't alter the bend at the collector. it wouldnt fit into there bender as 1 piece. they could only bend a straight piece of pipe.

Mark, do you want the "how to" for pipe bending or the "calculations" for header length?

Anything u have to help complete this thread would be great.
in the end i would like to know if building a pipe is in my grasp.

Thanks Keith, and John.
That denco looks like it has long primaries.
Kieth , does the V&H have to be removed for an oil change? it reminds me of the race Kerker.
anyone have a good pic of the Kereker race pipe?

Mark, here is what I came up with. All measurements taken with a tape held in the center of each pipe radius.

Outer Primaries: 30" 1.5" o.d.
Inner Primaries: 31" 1.5" o.d.
Collector Length: 4.75"
Megaphone Length: 27.75" 3" o.d.

I also came up with rough bend numbers on the megaphone. 27 degree bend at 11.875" from one end, and another 27 degree bend at 4.5" from the other end. Here's a pic, and let me know if you need more specific info. I also have a V/H pipe if you'd like some measurements from it.

I also read about using a ball mandrel for bending performance exhausts. Would be a must for this type of thing I imagine. Here's a link to a good article........

www.hinesbending.com/BASICTUBEBENDINGGUIDE.pdf

Thats great Eric. Thanks. here are my Street KerKer #s. this is for the 1 that has access to the oil filter.
I used a string to follow the bends and then measured the string.

Primary ID = 1 3/8" od = 1.5"
prim #1 = 34"
#2,3 = 35"
#4 = 33"
collector ID= 2 5/16" OD = 2.5"
length of taper is 5", to end of collector is another 9.5"

slip on starts @ 2.5" od ,and widens to 3" od at the bend . 7" long to bend.
3" to 4" OD. 12" long from bend to to end.
total length of slipon megaphone is 19".
At a glance it looks like the Yosh would favour top end compared to the street Kerker. yosh has shorter primaries and larger collector pipe. I will read that tube bending pg and get back to u. Thanks .

OK now u just have to teach me how to put lines and # on a pic. what program do u use? Thats great.
And John , u have to teach me how to put a collage (spell)together.

if ya want a pic of old kerker, i can dig it out....weekend is free.....hell, if it isnt too bad,
i might just look into throwing it on...they do sound good......no baffle for mine though....:laugh: