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Old 01-12-2013, 06:23 PM   #26
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Now thats what i'm talking about!
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Old 01-13-2013, 12:34 AM   #27
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saweet. what harness and computer you gonna run?
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Old 01-13-2013, 06:30 AM   #28
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I'm looking for a 69 to build as well. I hope I get as lucky as you did,lol. Nice car. Must feel great knowing you got ur dream car.
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Old 01-13-2013, 09:58 AM   #29
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Thanks guys!
The harness and ecu are from a 1990 Trans Am. I have to pull it apart and prune the harness down from the emissions crap and just check the condition of the harness. I will be bypassing the VATS for now to make sure it's set up right but when I start tuning I am going to order the EBL P4 (it's a prom that allows you to tune through a laptop and check live data without having to burn a new prom).
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...its cool to like diesels, cause that and pretending to be country is like, hip nowadays!!
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Old 01-13-2013, 10:31 PM   #30
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I am getting ready to build two versions of the hotside out of PVC. One with the headers flipped up - routing the bulk of the pipes above the motor and the other with the headers sitting normal and the piping underneath.

I am sticking with 2.5" pipe off each collector but I have been wondering about one part of the system. I am going to use mandrel bent pipes but where the two 2.5" pipes meet the T4 flange what is my ultimate goal?
I have found flanges that are rounded to fit the pipe without heat stretching the pipes but I would like to just spend the $55 and buy a pre-made section of pipe where they merge to go into a single T4 flange. Do I want my two 2.5" pipes to merge into a single 2.5" pipe at the flange (will this bottleneck the system) or should I step up from two 2.5" inlets to a 2.75" or 3" outlet? It will literally be for 2-3" of the system but I don't want to do all this work to cripple it at the turbo flange.
Examples are given below of the pipe using dual 2.5" inlet to a single 2.5" outlet (outlet size can be changed from 2.5", 2.75" 3" or maybe even bigger with the proper T4 flange for the diameter chosen):

Parallel merge:
http://www.mandrel-bends.com/catalog...mild-1998.html

Splayed merge:
http://www.mandrel-bends.com/catalog...mild-1765.html

Although I can probably make a splayed merge without too much headache, the $55 is worth it to me. Will either of the two merges be a better choice other than a splayed merge giving me more room to weld?

EDIT:
This is for a 383 with a 1.15 AR TC78
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...its cool to like diesels, cause that and pretending to be country is like, hip nowadays!!

Last edited by zraffz; 01-13-2013 at 10:34 PM.
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Old 01-14-2013, 07:09 AM   #31
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Wow man, you really hit the jackpot. I'm looking for somthin similar. Wish me luck.
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1999 Z28 A4 upgraded brakes, cat back, computrr tune, Vette wheels. Bunch of little stuff
1994. Z28 A4 Full exhaust including SLP Long tubes, 3" ORY pipe, 3 in cat back, CAI, chip, maf,BMR A Arms, Panhard rod, torque arm,. Bilstein shocks, Eibach springs, transmission more, including street shift kit.
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Old 01-14-2013, 11:11 AM   #32
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Wow man, you really hit the jackpot. I'm looking for somthin similar. Wish me luck.
You said this three posts ago
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Old 01-14-2013, 04:51 PM   #33
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Nice surprise... I ordered a set of 1 5/8" primaries -3" collector headers, well one came in with a 2.5" collector. Now I am a week further behind waiting for another shipment from California. I changed my order to 1 5/8" 2.5" collectors though.
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...its cool to like diesels, cause that and pretending to be country is like, hip nowadays!!
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Old 01-14-2013, 04:57 PM   #34
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2.5" collector? What? Why?
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Old 01-14-2013, 05:10 PM   #35
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2.5" collector? What? Why?
I didn't mean that. I meant I ordered both with 3" collectors. They are taking the 2.5" one back. I'm kind of disappointed. One reducer is ovaled like it got too hot when they welded it. I have a new 3" header and a new set of 2.5" reducers coming.
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...its cool to like diesels, cause that and pretending to be country is like, hip nowadays!!
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Old 01-14-2013, 05:10 PM   #36
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what headers?
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Old 01-14-2013, 05:37 PM   #37
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Sanderson CC2 1 5/8" Primaries 3" collectors to 2.5" reducers. They are about 6" tall overall. I've seen them used to be flipped upward with a little grinding for the coolant temp sensor but I want to try and route my piping under the motor so I'm hoping I don't have to flip them. With my angle plug trick flows I have great plug clearance either way though.
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Old 01-14-2013, 06:59 PM   #38
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nice project the car looks great
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Old 01-14-2013, 07:08 PM   #39
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I am surprised to hear a problem with a Sanderson header.
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The looser the waistband, the deeper the quicksand. Or so I have read.

Feather-light suspension, Konis just couldn't hold. I'm so glad I took a look inside your showroom doors.

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Old 01-14-2013, 07:30 PM   #40
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I am surprised to hear a problem with a Sanderson header.
Customer service is great and in their defense the headers themselves seem like a great product. The flanges are very thick, the tube gauge is thicker than most, they offer great plug clearance.
I am allowed to be annoyed after waiting 3 weeks for them but stuff like this happens.


EDIT:
In case anybody feels like laughing at my misfortune...
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...its cool to like diesels, cause that and pretending to be country is like, hip nowadays!!

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Old 01-14-2013, 08:43 PM   #41
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No merge spike? And is that rusting? So I guess its not stainless?
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Old 01-14-2013, 10:08 PM   #42
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No merge spike? And is that rusting? So I guess its not stainless?
Opted to stay away from any stainless or fancy coatings for welding reasons just in case I have to modify anything. Entire exhaust will be built out of mild steel.
As far as a velocity/merge spike, it wasn't an option. I had to rather sacrifice overall size of header/price/quality and in that ballpark nothing came with any sort of spike. With or without it I will still reach this turbos full potential.
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...its cool to like diesels, cause that and pretending to be country is like, hip nowadays!!
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Old 01-14-2013, 10:22 PM   #43
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Looks like a sweet build! Gonna be cool seeing a turbo'd gen1 sbc 1st gen...
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Old 01-14-2013, 10:29 PM   #44
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1.15 AR?

What do your heads flow?
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Old 01-14-2013, 11:01 PM   #45
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1.15 AR?

What do your heads flow?
I believe right around 265cfm. Don't forget although this has a 78mm compressor shoehorned inside it, it's still only a 68mm turbine wheel. I don't want to be restricted to 5,000 RPM shift points lol.
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Old 01-15-2013, 08:28 AM   #46
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Opted to stay away from any stainless or fancy coatings for welding reasons just in case I have to modify anything. Entire exhaust will be built out of mild steel.
As far as a velocity/merge spike, it wasn't an option. I had to rather sacrifice overall size of header/price/quality and in that ballpark nothing came with any sort of spike. With or without it I will still reach this turbos full potential.
Yeah that's true, you might have to hack it up. Makes sense.
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Old 01-15-2013, 08:43 AM   #47
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Opted to stay away from any stainless or fancy coatings for welding reasons just in case I have to modify anything.
You do know stainless can be welded, right?
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Old 01-15-2013, 10:22 AM   #48
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You do know stainless can be welded, right?
And if you dont have the material you can weld it to regular mild steel with regular ER60 or ER70
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Old 01-16-2013, 06:04 PM   #49
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No merge spike? And is that rusting? So I guess its not stainless?
Who cares about that. The exhaust is getting pushed out by the boost anyways... That kinda stuff is more for the NA/nitrous guys.

And I'm totally jealous of this build. I'd love todo a pro touring 69 camaro
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Old 01-16-2013, 07:59 PM   #50
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Exhaust gets pushed out by the boost?
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