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Author Topic: 3" stainless downpipes  (Read 34367 times)

June 26, 2007, 02:04:21 pm

935racer

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3" stainless downpipes
« on: June 26, 2007, 02:04:21 pm »
Alright guys you talked me back into, heres what we are going to do:

Moving to stainless steel, never thought we would but it is a bit different than what everyone else is using. We do a lot of sanitary stainless tig welding and fab here and the sanitary fittings are a lot thicker throughout the bend than a traditional mandrel U bend, the reason for that is simply because the sanitary fittings are formed hot, and the mandrel U bends are formed cold. I will be getting pictures up here to show the difference.

I know I have preached about stainless being a poor choice for exhaust many times before, and I'll still never use it for an exhaust manifold, but we have built a few audi s4 downpipes lately for some locals and as long as they are back purged they don't crack. Most manufactures out there like techtonics tuning and 034 motorsport don't backpurge their welds and thats why they crack. Of course we will be welding ours properly, so you can expect your downpipe to last a lifetime.

And on to pricing:
For a 3" stainless DP with flex joint and no flange connection on the end of the downpipe will be $339CAD.
With the V band connection for $379CAD

Yes its a lot more than out old ones but this is virtually the only way I found that we can keep doing them in a timely manner. The 3" is something I've wanted to produce for a while, I've made 2, 3" downpipes for 1.9's with 1.6 turbos and they spool up as fast as the tiny k14's do.
The only other aftermarket downpipe I know if right know is the techtonics downpipe for the mk1, its only 2.25", crappy welding, no flange solution on the end and is $300USD...

SO what are your guys thoughts and opinions?
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Reply #1June 26, 2007, 02:14:37 pm

zukgod1

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3" stainless downpipes
« Reply #1 on: June 26, 2007, 02:14:37 pm »
Ok, what about reg steel?
I dont want stainless really.


dan
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dan

99 Golf TDI (now CNG powered) , 82 TD Caddy
Reply #2June 26, 2007, 02:24:57 pm

zukgod1

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3" stainless downpipes
« Reply #2 on: June 26, 2007, 02:24:57 pm »
Also, What about selling the parts for those of us that want/can build it ourselfs?

dan
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dan

99 Golf TDI (now CNG powered) , 82 TD Caddy
Reply #3June 26, 2007, 02:41:26 pm

935racer

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3" stainless downpipes
« Reply #3 on: June 26, 2007, 02:41:26 pm »
THe problem with steel is that a 3" U bend the tightest radius I can get is 6", which is too big for our engine bays. With the stainless I can get them in a 3.5" radius.

As soon as we can get our mill back up and going we will sell the flanges.
(If anyone knows where we can find a Dynapath S10 graphics board our CNC would get up a lot sooner)
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Reply #4June 26, 2007, 03:33:03 pm

subsonic

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3" stainless downpipes
« Reply #4 on: June 26, 2007, 03:33:03 pm »
Give me a part number for the board if ya would.  I think I have found two of them.
Jim
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2009 Jetta TDI Loyal edition, 6-spd. 16V 2.0CR


1985 VW Golf 5-spd, 4-door, 1.6NA  Bought from orig. owner in Savannah with 42,000 miles.
"Making the jump NA to TD" slow but sure.

1980 VW Rabbit LS 5-spd, 4-door 1.6NA almost 450,000miles  RIP
Reply #5June 26, 2007, 03:44:42 pm

935racer

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3" stainless downpipes
« Reply #5 on: June 26, 2007, 03:44:42 pm »
Quote
Give me a part number for the board if ya would.  I think I have found two of them.
Jim



SWEET!

Ok just pulled the board out.
Heres some #'s I grabbed
s10 Perpheral Control
Jan 14 1985
BIC634
4200547  SN
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Reply #6June 26, 2007, 04:00:22 pm

subsonic

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3" stainless downpipes
« Reply #6 on: June 26, 2007, 04:00:22 pm »
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2009 Jetta TDI Loyal edition, 6-spd. 16V 2.0CR


1985 VW Golf 5-spd, 4-door, 1.6NA  Bought from orig. owner in Savannah with 42,000 miles.
"Making the jump NA to TD" slow but sure.

1980 VW Rabbit LS 5-spd, 4-door 1.6NA almost 450,000miles  RIP
Reply #7June 26, 2007, 04:02:19 pm

jtanguay

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3" stainless downpipes
« Reply #7 on: June 26, 2007, 04:02:19 pm »
Saving up money.... now!  :lol:

can you make a flange to fit the VNT-17?
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Reply #8June 26, 2007, 04:12:19 pm

subsonic

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« Reply #8 on: June 26, 2007, 04:12:19 pm »
Dave, he's calling you in a few min. with the board in his hand.
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2009 Jetta TDI Loyal edition, 6-spd. 16V 2.0CR


1985 VW Golf 5-spd, 4-door, 1.6NA  Bought from orig. owner in Savannah with 42,000 miles.
"Making the jump NA to TD" slow but sure.

1980 VW Rabbit LS 5-spd, 4-door 1.6NA almost 450,000miles  RIP
Reply #9June 26, 2007, 04:23:48 pm

subsonic

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3" stainless downpipes
« Reply #9 on: June 26, 2007, 04:23:48 pm »
Dave, you may want to check this one out as well.  They have multiple boards for 700ish.  They also have the schematics you are looking for.

Jim

http://www.ellingsenresearch.com/

Ask for Warren.  He will be there untill 9pm eastern time.
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2009 Jetta TDI Loyal edition, 6-spd. 16V 2.0CR


1985 VW Golf 5-spd, 4-door, 1.6NA  Bought from orig. owner in Savannah with 42,000 miles.
"Making the jump NA to TD" slow but sure.

1980 VW Rabbit LS 5-spd, 4-door 1.6NA almost 450,000miles  RIP
Reply #10June 26, 2007, 04:29:13 pm

burn_your_money

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3" stainless downpipes
« Reply #10 on: June 26, 2007, 04:29:13 pm »
How long do you expect one to last?
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Tyler
Reply #11June 26, 2007, 04:43:51 pm

subsonic

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3" stainless downpipes
« Reply #11 on: June 26, 2007, 04:43:51 pm »
Will this do away with the need to ceramic coat?
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2009 Jetta TDI Loyal edition, 6-spd. 16V 2.0CR


1985 VW Golf 5-spd, 4-door, 1.6NA  Bought from orig. owner in Savannah with 42,000 miles.
"Making the jump NA to TD" slow but sure.

1980 VW Rabbit LS 5-spd, 4-door 1.6NA almost 450,000miles  RIP
Reply #12June 26, 2007, 04:50:36 pm

QuickTD

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3" stainless downpipes
« Reply #12 on: June 26, 2007, 04:50:36 pm »
Quote
Ok just pulled the board out.
Heres some #'s I grabbed
s10 Perpheral Control
Jan 14 1985
BIC634
4200547  SN


Thats not the graphics board part number Dave, that's the peripheral control board. It contains the tape reader interface and some other functions. You need the graphics controller. Maybe I've been looking for the wrong schematic all along. In any case I just sent you every autocon/dynapath system 10 and delta 10 schematic I have. You should have them this week.
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Reply #13June 26, 2007, 04:51:43 pm

935racer

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3" stainless downpipes
« Reply #13 on: June 26, 2007, 04:51:43 pm »
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How long do you expect one to last?

 

They will come with a 10 year warranty. The only way I see them failing would be under missuse or modification.
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Reply #14June 26, 2007, 04:53:31 pm

935racer

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3" stainless downpipes
« Reply #14 on: June 26, 2007, 04:53:31 pm »
Quote
Will this do away with the need to ceramic coat?


From a corrosion standpoint yes, from a thermal barrier standpoint no.
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