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twice pipes -my version


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#1 madkaw

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Posted 12 April 2007 - 11:27 AM

My version of twice pipes finally starting be be a reality. Some of the most challenging but fun fabricating I've done. I wish I was initially brave enough to do this in SS but wasn't sure how it would turn out. Can't wait to hear it!!!!!! Posted Image
Steve,
9/71 240z. 2.4 -.40 over, balanced. E-88 Bigger SS valves, stage 2, 6x2 header, true dual exhaust. BW t-5 , STI LSD 3.90- triple Mikunis 40mm

#2 justin260z

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Posted 12 April 2007 - 12:11 PM

Looks awesome, cant wait to hear it!! How big is that pipe 2 1/4?

#3 madkaw

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Posted 12 April 2007 - 01:05 PM

Posted ImageI am running 2" only for my p-30.
Steve,
9/71 240z. 2.4 -.40 over, balanced. E-88 Bigger SS valves, stage 2, 6x2 header, true dual exhaust. BW t-5 , STI LSD 3.90- triple Mikunis 40mm

#4 Sven

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Posted 12 April 2007 - 07:52 PM

Where did you find a 2" X-over pipe? I've looked for one to do the exact same thing with no luck!
Sometimes nothin' can be a real cool hand...
'73 240z 3.1 Mikuni,Mikuni,Mikuni - the OD Green Z
'73 240z "The Driver", soon to steal engine from ^^^
'77 280z -spread across three states in pieces, SBF'ed eventually
'85 500SEC I refuse to drive nothing but the very best! (of 1985...)
'00 F250 7.3 PSD mostly in one piece
'91 Mustang Coupe - Dust collector, forgotten step child


#5 madkaw

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Posted 12 April 2007 - 11:17 PM

I never did find one so I made that one. Just takes 2 -90 degree bends and 4 -45 degree bends and a welder , oh ,and a lot of patience. I thought about using a 2.25" crossover but decided to build my own. At
90$ for a dynoflow , i about bought half of my whole system for that. besides, you are limited to working around their dimensional specs for incorporating into a Z chassis. i did find someone that did make a 2" Xover the other day when i picked up my glasspacks and i can find it somewhere if you like?
Steve,
9/71 240z. 2.4 -.40 over, balanced. E-88 Bigger SS valves, stage 2, 6x2 header, true dual exhaust. BW t-5 , STI LSD 3.90- triple Mikunis 40mm

#6 JMortensen

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Posted 13 April 2007 - 06:20 AM

Looks like you're doing a really nice job with it. You might consider making the center part removeable so that if you have to drop the trans out you don't need to take everything from the header on back out.

Jon Mortensen, owner/operator www.petdoorstore.com


#7 madkaw

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Posted 13 April 2007 - 11:57 AM

Thanks John. Actually the exhaust will be removable . Someone showed me the bandclamps for exhaust and i will be using them to connect the rear section(behind the diff) to the front. I will also use the band clamps to connect to the header.
Picked up my 12" glasspacks today. I wish i could have fitted longer ones but it's to tight in there.Now I need to decide what tips:?:
Steve,
9/71 240z. 2.4 -.40 over, balanced. E-88 Bigger SS valves, stage 2, 6x2 header, true dual exhaust. BW t-5 , STI LSD 3.90- triple Mikunis 40mm

#8 madkaw

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Posted 15 April 2007 - 02:33 PM

Damn I am having a hard time deciding which tips to get. I also can't believe how $$$$$$$$ some of these are. I am considering two sets of dual SS tips out the back--what do you think. I also wonder how restrictive the monza dual tips would be with built in resonators. I need to make up my mind so I can finish this up:confused2 :confused2 :confused2
Steve,
9/71 240z. 2.4 -.40 over, balanced. E-88 Bigger SS valves, stage 2, 6x2 header, true dual exhaust. BW t-5 , STI LSD 3.90- triple Mikunis 40mm

#9 dk240z

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Posted 15 April 2007 - 03:57 PM

Get the monza splitter duals and cut off the tips. I bought a righthand Monza 300zx muffler new off Ebay for $13. I'm using the muffler, but I cut off the tips since I had to flip the muffler to fit. Ended up welding on some generic chrome tips. My muffler guy did it for $40 uncluding the tips. I'll see If I can find the tips. Pretty sure there "2 dia. You might want them. By the way which is better; the GMs, or the GEs? Who you running for, NS or CSX? See Ya!

Dave K

#10 madkaw

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Posted 15 April 2007 - 05:35 PM

Dave,
i can't quite picture what your saying ,maybe a pic would help.
I run for CSX and for the most part I like the GMs the best . The sd 70's are pretty amazing , nothing fancy , just gets it done well.
Steve,
9/71 240z. 2.4 -.40 over, balanced. E-88 Bigger SS valves, stage 2, 6x2 header, true dual exhaust. BW t-5 , STI LSD 3.90- triple Mikunis 40mm

#11 madkaw

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Posted 16 April 2007 - 01:21 PM

Well i hope these will look good. That was a tough decision. What do you think?
Posted Image
Steve,
9/71 240z. 2.4 -.40 over, balanced. E-88 Bigger SS valves, stage 2, 6x2 header, true dual exhaust. BW t-5 , STI LSD 3.90- triple Mikunis 40mm

#12 Sven

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Posted 17 April 2007 - 04:19 PM

Very nice Steve. Now make me one, please! Those are pretty clean looking tips too. How much were they?
Sometimes nothin' can be a real cool hand...
'73 240z 3.1 Mikuni,Mikuni,Mikuni - the OD Green Z
'73 240z "The Driver", soon to steal engine from ^^^
'77 280z -spread across three states in pieces, SBF'ed eventually
'85 500SEC I refuse to drive nothing but the very best! (of 1985...)
'00 F250 7.3 PSD mostly in one piece
'91 Mustang Coupe - Dust collector, forgotten step child


#13 madkaw

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Posted 17 April 2007 - 05:14 PM

Found those on e-bay for 25$. They had excellent feedback and their prices are great.
Steve,
9/71 240z. 2.4 -.40 over, balanced. E-88 Bigger SS valves, stage 2, 6x2 header, true dual exhaust. BW t-5 , STI LSD 3.90- triple Mikunis 40mm

#14 madkaw

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Posted 23 April 2007 - 06:29 PM

Finally made some more headway on my twice pipes.
Posted Image
Steve,
9/71 240z. 2.4 -.40 over, balanced. E-88 Bigger SS valves, stage 2, 6x2 header, true dual exhaust. BW t-5 , STI LSD 3.90- triple Mikunis 40mm

#15 Guest_TeamNissan_*

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Posted 23 April 2007 - 06:52 PM

Hey steve are you using a stock gas tank? Any pics of the passenger side?

#16 Ledphoot

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Posted 23 April 2007 - 07:01 PM

very nice!
LedPhoot Racing
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#17 madkaw

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Posted 24 April 2007 - 03:22 AM

Posted ImageCentered cj-5 tank
Steve,
9/71 240z. 2.4 -.40 over, balanced. E-88 Bigger SS valves, stage 2, 6x2 header, true dual exhaust. BW t-5 , STI LSD 3.90- triple Mikunis 40mm

#18 madkaw

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Posted 24 April 2007 - 03:39 AM

Here is a better pic of the right side. there is obviously major work to run pipes like this, but i wanted to do it and I love doing fab work. Posted Image
Steve,
9/71 240z. 2.4 -.40 over, balanced. E-88 Bigger SS valves, stage 2, 6x2 header, true dual exhaust. BW t-5 , STI LSD 3.90- triple Mikunis 40mm

#19 katman

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Posted 24 April 2007 - 07:40 AM

Very nice. What engine mods are these going behind?

#20 madkaw

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Posted 07 May 2007 - 11:24 AM

I finally can say my exhaust is done. I threw some parts on to see what the rear view would be like. I need some big rubber on her now!! Posted Image
Steve,
9/71 240z. 2.4 -.40 over, balanced. E-88 Bigger SS valves, stage 2, 6x2 header, true dual exhaust. BW t-5 , STI LSD 3.90- triple Mikunis 40mm




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