An exhaust mod in progress

shtbxr22 · Post by **shtbxr22** » Sun Jun 07, 2009 1:11 am

I'm looking to take away the inline 4 sound in my legacy, and here is my project:

Stock manifold setup-

Note somewhat equal length. it equals crap sound!! So here is my solution:
EJ20K (JDM Ver.4 STi) Turbo manifold. I am in the process of modding it to fit. cleaning up whatever casting flash I can, and chopped the heat shield "tits" off the left, and right section. I disassembled everything, blasted the left, and center flex section, and white satin ceramic coated, then reassembled them w/ high temp black on center section. I will be making a jig to get the right angle for the stock manifold, and then hacking the turbo one to change it's angle to be a bolt up affair. here are the progress pics. will update as I progress more.

GodSquadMandrake · Post by **GodSquadMandrake** » Sun Jun 07, 2009 11:15 am

Sweet. So basically you are going for the boxer rumble in an N/A? Very cool. I look forward to a sound bite!

shtbxr22 · Post by **shtbxr22** » Sat Jun 13, 2009 1:52 am

so, here is the beginnings of the jig for the equal length crap. I really need some time with this. I should have been done.

shtbxr22 · Post by **shtbxr22** » Sat Jun 13, 2009 1:59 am

this is a loud version of what I hope to accomplish.

http://www.youtube.com/watch?v=VhIzm-sU ... re=related

letsridestreet · Post by **letsridestreet** » Sat Jun 13, 2009 9:17 am

Are you welding on that cast iron?

shtbxr22 · Post by **shtbxr22** » Sat Jun 13, 2009 11:22 am

with a strong mig, yes.

shtbxr22 · Post by **shtbxr22** » Sun Jun 14, 2009 1:33 am

so the jig is ready. now to cut/adapt the turbo manifold.

fishbone79 · Post by **fishbone79** » Sun Jun 14, 2009 2:57 am

This is pretty cool. One question, how do you keep the cast from cracking when you weld it? Even heat with oxy/acet while you run smallish 'spot' beads with the mig? I've always had bad luck trying to attach things to cast, but according to my old man, that was because I did not set up a few torches to keep the work evenly heated while welding.

shtbxr22 · Post by **shtbxr22** » Sun Jun 14, 2009 3:31 am

just gotta heat it first, and when done, take the heat away gradually.

fishbone79 · Post by **fishbone79** » Sun Jun 14, 2009 4:05 am

Ah, OK, cool. Do you get it cherry right before hand? Thanks!

shtbxr22 · Post by **shtbxr22** » Sun Jun 14, 2009 10:54 am

almost molten. its best to use a rod, and weld iron to iron, but I don't have that luxury. we'll see how she comes out. I'm gonna try a test weld on some iron I cut off first, and if that doesnt work, i'll have it done at a shop that specializes in that kind of stuff.

shtbxr22 · Post by **shtbxr22** » Sat Jul 04, 2009 4:15 pm

waiting on a bandsaw blade to come in so I can hack her up.

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An exhaust mod in progress

An exhaust mod in progress