Pelican Parts
Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help



Go Back   Pelican Parts Forums > Porsche Forums > 911 / 930 Turbo & Super Charging Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
R.I.P.
 
drmatera's Avatar
 
Join Date: Aug 2009
Location: Nicholson, Ga
Posts: 2,160
My latest mod. idle hands are the devil's playground

I'm going to prefice this by saying i am in NO WAY going to reproduce, market, sell, give away, rent, lend or condone this.

Here is the latest from my twisted mind. you're saying to yourself " so what? you put a new exhaust on your 930", then you say, "is that a coating on the pipe? looks silver". Well aluminum is silvery in color

Old 03-28-2010, 01:28 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
R.I.P.
 
drmatera's Avatar
 
Join Date: Aug 2009
Location: Nicholson, Ga
Posts: 2,160
yes, it's aluminum. from the flange to the tailpipe tip.







yes, i am aware aluminum melts in the 800* area. Yes, i am aware for road racing this would NOT hold up AT ALL. But it's all in fun and thats what hor rodding is all about.

Sounds pretty good as well.
Old 03-28-2010, 01:32 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
7.0:1 > 11.3:1
 
Join Date: Oct 2003
Location: Calgary
Posts: 1,878
Garage
Yup, idle hands. Nice work.
Old 03-28-2010, 04:02 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered User
 
Join Date: Jun 2005
Location: Colorado
Posts: 700
Nothing wrong with experimenting and trying something different, keep at it!
__________________
1986 911 Turbo
3.3L, K27HFS, Tial 46mm, TurboKraft Intercooler, 964 Cams, Monty Muffler, MS3Pro Evo, M&W Ignition, Zietronix WBO2 Data Logger, Wevo shifter, coupler and motor mounts.
Old 03-28-2010, 05:27 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Crotchety Old Bastard
 
RarlyL8's Avatar
 
Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,555
Garage
You may see temperatures 1000*F higher than the melting point of aluminum in the neck area. Please show pictures of what the looks like as I can't quite imagine it.
__________________
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 03-28-2010, 09:13 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
R.I.P.
 
drmatera's Avatar
 
Join Date: Aug 2009
Location: Nicholson, Ga
Posts: 2,160
the flange off the turbo is 1/2" thick aluminum. The tubing going to the muffler is .120" wall but the muffler is only .083" (we'll see how that holds up). The real unknown is how well the "U" turn will hold up. It's a "donut" we sell and it's really for intercooler piping and .065" wall. It provided me with the tightest radius in one piece but if it blows out i'll replace it with 2 90*'s in the thick wall. The car sounds good, i'll video it and post for all to hear.
Old 03-29-2010, 12:26 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Registered User
 
TurboKraft's Avatar
 
Join Date: Mar 2005
Location: Phoenix, AZ
Posts: 2,540
Mad doctor at work! Love it.
Drag racers have been doing it for years. Why not try on a Porsche? What's the worst that'll happen -- it'll melt at the turbo and get loud?
Go for it!
__________________
Chris Carroll
TurboKraft, Inc.
Tel. 480.969.0911
email: info@turbokraft.com
http://www.facebook.com/TurboKraft - http://www.instagram.com/TurboKraft
Old 03-29-2010, 02:49 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Champagne on Beer Budget
 
HelmetHead's Avatar
 
Join Date: Dec 2004
Location: Seabrook, Texas
Posts: 1,355
Garage
I wish I could Tig like that!
__________________
Einar

www.einarsgarage.com
Instagram @einars_garage
https://www.facebook.com/pages/Einars-Garage/375533809160797
Old 03-29-2010, 03:54 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
R.I.P.
 
drmatera's Avatar
 
Join Date: Aug 2009
Location: Nicholson, Ga
Posts: 2,160
Quote:
Originally Posted by TurboKraft View Post
Mad doctor at work! Love it.
Drag racers have been doing it for years. Why not try on a Porsche? What's the worst that'll happen -- it'll melt at the turbo and get loud?
Go for it!
true.

funny thing is i had just a 24" long straight pipe with no muffler on it before. It weighs 5.75 pounds. This whole contraption weighs 5 pounds and the car sounds much better
Old 03-29-2010, 04:36 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Crotchety Old Bastard
 
RarlyL8's Avatar
 
Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,555
Garage
Nothing ventured nothing gained. As a one-off in a specific lower-than-tyical heat application it may last for a little while. That design is pretty much how my mufflers look and they weigh 12 pounds in 321 stainless. I would love to use aluminum as it is less expensive and lighter but it is nowhere near as durable as 321. You have seen those pictures of cherry red glowing turbos yes? That would turn your muffler into a vulcano.
Is your muffler packed or a perforated chamber?
__________________
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 03-29-2010, 09:18 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Max Sluiter
 
Flieger's Avatar
 
Join Date: Mar 2006
Location: So Cal
Posts: 19,572
Garage
Maybe you could give the inside ceramic coating if there is a process like powdercoating using ceramic. I guess that would require a "firing" that would melt Aluminum. Maybe a liquid dip?
__________________
911S
1971 chassis, 2.7RS spec MFI engine, suspension mods, lightened

Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance
http://www.flickr.com/photos/max_911_fahrer/
Old 03-29-2010, 09:33 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
R.I.P.
 
drmatera's Avatar
 
Join Date: Aug 2009
Location: Nicholson, Ga
Posts: 2,160
I thought about some sort of coating on the inside but not sure what it would do to the muffler packing. We made the muffler out of perforated aluminum rolled into a tube shape then stuffed into the 4" tube with stainless packing material.
Old 03-30-2010, 12:32 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
 
R.I.P.
 
drmatera's Avatar
 
Join Date: Aug 2009
Location: Nicholson, Ga
Posts: 2,160
Brian, I did use your design for this set-up as it looks to give a bit quieter exhaust note due to the longer tubing. I'm going to the drag strip Wed night so we'll see if it stays on.
Old 03-30-2010, 12:37 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
Crotchety Old Bastard
 
RarlyL8's Avatar
 
Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,555
Garage
If your engine is in good tune with propper AFRs you should not see crazy heat like some of my mufflers have been exposed to. I would LOVE to use aluminum but it just isn't practical for all the various applications and range (or lack of) of tune.
Please do report back as I have never personally seen aluminum used in a turbo application. N/A typically produces a lot less localized heat.
__________________
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 03-30-2010, 08:59 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)
Max Sluiter
 
Flieger's Avatar
 
Join Date: Mar 2006
Location: So Cal
Posts: 19,572
Garage
As an FYI tidbit,

Inconel (Nickel alloy of ~30% Chrome and about ~5% Iron) is used for headers to save weight. It is actually similar density to Stainless Steels but it has a much higher resistance to heat. It is stronger (by weight) than SS at high temperatures. Therefore, F1 teams or high-budget racers can use paper-thin Inconel tubing to save on materials and weight. The problem is that it work hardens quickly and is very easy to fold/bend with tube walls than thin.
__________________
911S
1971 chassis, 2.7RS spec MFI engine, suspension mods, lightened

Suspension by Rebel Racing, Serviced by TLG Auto, Brakes by PMB Performance
http://www.flickr.com/photos/max_911_fahrer/

Last edited by Flieger; 03-30-2010 at 09:19 PM..
Old 03-30-2010, 09:16 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #15 (permalink)
R.I.P.
 
drmatera's Avatar
 
Join Date: Aug 2009
Location: Nicholson, Ga
Posts: 2,160
alot of my drag racing customers use aluminum exhaut on their turbo cars. They are after light weight and low price. Even if they have to replace the pipes at the end of the season it's still a whole lot cheaper than exotic materials. I keep my a/f on the fat side (10.5 @ WOT) so we'll see how well it holds up.

I would never recommend aluminum for road racing or any kind of extended WOT situations
Old 03-31-2010, 06:55 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #16 (permalink)
Crotchety Old Bastard
 
RarlyL8's Avatar
 
Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,555
Garage
Quote:
They are after light weight and low price. Even if they have to replace the pipes at the end of the season it's still a whole lot cheaper than exotic materials
That is a great application for this material, short term high performance.

We worked up a set of headers in inconel. Cost for materials alone was going to be $5000. Wow!
__________________
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 03-31-2010, 07:07 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #17 (permalink)
R.I.P.
 
drmatera's Avatar
 
Join Date: Aug 2009
Location: Nicholson, Ga
Posts: 2,160
yikes
Old 03-31-2010, 08:33 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #18 (permalink)
7.0:1 > 11.3:1
 
Join Date: Oct 2003
Location: Calgary
Posts: 1,878
Garage
Brian, did your customer actually go ahead with the inconel system? Bragging rights or to save 2 oz? Where can I find customers like this.

A friend used aluminum for the rear half of the exhaust on a turbo road race car. To my surprise it lived.
Old 03-31-2010, 04:41 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #19 (permalink)
Crotchety Old Bastard
 
RarlyL8's Avatar
 
Join Date: Jan 2000
Location: Huntsville, AL
Posts: 13,555
Garage
The inconel headers were bagged by the client due to a personal issue that affected financing. He did pay for all the R&D work and some fixturing costs which was very nice.
LOVE the ditty under your screen name.
__________________
RarlyL8 Motorsports / M&K Exhaust - 911/930 Exhaust Systems, Turbos, TiAL, CIS Mods/Rebuilds
'78 911SC Widebody, 930 engine, 915 Tranny, K27, SC Cams, RL8 Headers & GT3 Muffler. 350whp @ 0.75bar
Brian B. (256)536-9977 Service@MKExhaust Brian@RarlyL8
Old 03-31-2010, 07:58 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #20 (permalink)
Reply

Thread Tools
Rate This Thread
Rate This Thread:

 


All times are GMT -8. The time now is 12:24 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Pelican Parts Website -    DMCA Registered Agent Contact Page
 

DTO Garage Plus vBulletin Plugins by Drive Thru Online, Inc.