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 > Porsche 928 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered User
 
DZGunner's Avatar
 
Join Date: Jun 2012
Location: Montana
Posts: 199
Air Intake tubes

Does anyone have an alternative to the plastic air intake tube that go from the front air dam to the air box? I've seen some pictures before of 928 engines with different tubing, but no one has ever elaborated on what they are made of and such. My plastic tubes are old and have some holes near the bottom portion of the tube about halfway up.

I'm sort of a do it your-selfer (much like a lot of you guys), so if there's an upgrade out there that can be crafted with locally bought materials, i'd be happy to get some ideas.

Just so i can get a full spectrum of what's available, i'm not opposed to being shown aftermarket pre-made items.

Thanks guys.
__________________
1987 928 S4 - Guards Red
Old 11-16-2013, 07:35 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Formerly from Bannlist
 
MPDano's Avatar
 
Join Date: Dec 2007
Location: Sunny San Diego
Posts: 9,018
Garage
Strange that I didn't include the MB hoses I put on my Euro in the Common Fixes.









Part Number

1170940382

Genuine Mercedes
Air Intake Boot/Hoses; Intake Scoop to Air Filter Housing
1 per car.

$12.96
__________________
1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior
1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior

Porsche928Forums.com (NOW Mobile Enabled!)
Old 11-17-2013, 05:43 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Registered User
 
DZGunner's Avatar
 
Join Date: Jun 2012
Location: Montana
Posts: 199
Where are you getting them for $12.96? and where did you get the colored hose to connect them? This looks really nice, thanks Dano.
__________________
1987 928 S4 - Guards Red
Old 11-17-2013, 06:33 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Formerly from Bannlist
 
MPDano's Avatar
 
Join Date: Dec 2007
Location: Sunny San Diego
Posts: 9,018
Garage
Couplers are from eBay. You have to measure the tube diameter first once you get them. Google that part number and there are plenty of places, even here.
__________________
1981 Porsche 928 "Euro" Auto Gunsmoke Metallic Flat - Black Interior
1983 Porsche 928S "US" Auto Light Bronze (Copper) Metallic - Brown Interior

Porsche928Forums.com (NOW Mobile Enabled!)
Old 11-17-2013, 06:43 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered User
 
DZGunner's Avatar
 
Join Date: Jun 2012
Location: Montana
Posts: 199
What diameter coupler did you get
__________________
1987 928 S4 - Guards Red
Old 11-17-2013, 07:01 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered User
 
Fixer's Avatar
 
Join Date: Aug 2012
Location: Philadelphia Area
Posts: 3,082
Looks great Leo, and good question and thread.
__________________
Matt Mariani, Philly Pa IG: matt_mariani_rsc
[B]1983 Super Carrera Coupe 'Mad Max'
1969 911E targa Crystal Blue / Black (selling)
1968 SWB 912 "Stinger 912R 1680 lbs
1977 911S coupe "Bandit" all original for now
Old 11-17-2013, 07:38 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
 
Network Native
 
Danglerb's Avatar
 
Join Date: Jan 2007
Location: SoCal
Posts: 10,202
Make sure you do a hole for the timing cover vent.

BTW I haven't ever gotten a good answer on which way the air goes through that vent.
Old 11-17-2013, 08:22 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Porsche 928 Fanatic!
 
Join Date: Oct 2013
Location: Allentown, PA
Posts: 233
Quote:
Originally Posted by Danglerb View Post
Make sure you do a hole for the timing cover vent.

BTW I haven't ever gotten a good answer on which way the air goes through that vent.
Timing cover vent is to be connected to a vacuum to the intake - air comes out, it anotherwords, keeping negative/vacuum in the timing cover.
__________________
Webmaster - www.GreatWhite928.com
250+ 928s for sale at all times!
Old 11-17-2013, 08:30 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered User
 
stepson's Avatar
 
Join Date: Mar 2010
Location: Texas
Posts: 1,547
Roger also sells those MB tubes complete with holes and connectors.
__________________
John Curry (Drift King) 928OC member
Grand Prix White 1994 GTS AT (The GTS)
Cobalt Blue 1989 S4 AT (The Blue Car)
Indishrot 1984 Euro S AT (The Stepson)
Black Metallic 1984 Euro S 5 speed (The Schwartz)
Old 11-17-2013, 08:45 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Kool
 
AirtekHVAC's Avatar
 
Join Date: Mar 2012
Location: China Grove, NC
Posts: 1,800
Garage
I got my replacement tubes on the 'bay....I think they were 64$ for a pair.....still in the box...
__________________
Ron
1978 5sp (#30) project-Wreckscue
1979 5sp Euro basket case
1982 5sp resto project
(Yes, I now have 3 project Sharks)
Old 11-17-2013, 09:19 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Porsche 928 Fanatic!
 
Join Date: Oct 2013
Location: Allentown, PA
Posts: 233
??? No fewer than 10 listings on e-Bay for the real deal air intakes made for Porsche, new,, $50-$60
__________________
Webmaster - www.GreatWhite928.com
250+ 928s for sale at all times!
Old 11-17-2013, 09:30 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Registered User
 
DZGunner's Avatar
 
Join Date: Jun 2012
Location: Montana
Posts: 199
Thats for one though, two will cost atleast $115. Also, what is the significance of having the low air pressure in the timing cover? One of mine is messed up and doesnt exactly fit over the thing anymore, how important is that?
__________________
1987 928 S4 - Guards Red
Old 11-17-2013, 10:26 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
Registered User
 
SanDiego928's Avatar
 
Join Date: Dec 2011
Location: Alpine, CA.
Posts: 456
Leo - So nice. I bought the real deal 3 years ago but I like the looks of yours.
__________________
Mark

1981 928
Old 11-17-2013, 07:36 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
Registered User
 
stepson's Avatar
 
Join Date: Mar 2010
Location: Texas
Posts: 1,547
Roger sells both sides of MB ones for less than the cost of factory ones.
__________________
John Curry (Drift King) 928OC member
Grand Prix White 1994 GTS AT (The GTS)
Cobalt Blue 1989 S4 AT (The Blue Car)
Indishrot 1984 Euro S AT (The Stepson)
Black Metallic 1984 Euro S 5 speed (The Schwartz)
Old 11-17-2013, 07:36 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)
Registered User
 
DZGunner's Avatar
 
Join Date: Jun 2012
Location: Montana
Posts: 199
I sent roger an email the day i made this thread, he hasn't replied yet though.
__________________
1987 928 S4 - Guards Red
Old 11-18-2013, 07:03 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #15 (permalink)
Registered User
 
928_Trackie's Avatar
 
Join Date: Mar 2009
Posts: 23
Garage
I am using 3" aluminum intercooling pipe.. And polished. It also removes the restriction in the middle of the plastic tube as it starts out as a 3" and is choked down to 2". I'm not using the vacuum port to the timing belt. I have run like this for 5 years with no issue.. And also if you look at a GTS, they were deleted. I'm positive the vacuum nipple on the timing cover has nothing to do with removing air pressure. There are many holes and slots in the cover for wire and such to remove any pressure, if any at all.
Old 11-18-2013, 12:42 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #16 (permalink)
Engineer of profanity
 
924CarreraGTP's Avatar
 
Join Date: Apr 2011
Location: BFE
Posts: 1,283
Garage
I wouldn't think the air flow holes on the tops of the timing covers would hold any vacuum either. There would be tighter seals if so. I think it just provides a little more cooling for the timing belt. The holes in the timing covers probably blow more air out than it does suck it in. Maybe that's to provide a little more charged air to the intake. Maybe both, I'm really not sure. Also DZGunnar, if you stick your finger in the hole (don't get too exited) where the timing cover attaches, you can spin the sleeve in the inside of the intake tube. Then the holes of both pieces will line up and the intake tube will go back down on the timing cover.
__________________
1970 Porsche 911T Black
1990 Porsche 944 S2 Red on cashmere
1984 Porsche 928S Euro ROW GP white on black

Last edited by 924CarreraGTP; 11-18-2013 at 02:27 PM..
Old 11-18-2013, 02:23 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #17 (permalink)
Network Native
 
Danglerb's Avatar
 
Join Date: Jan 2007
Location: SoCal
Posts: 10,202
Quote:
Originally Posted by uBoat Commander View Post
Timing cover vent is to be connected to a vacuum to the intake - air comes out, it anotherwords, keeping negative/vacuum in the timing cover.
Air intake tubes are pre air filter, ambient atmospheric pressure all the time. Mark Kibort is hooked up with those turbo efan people and they measured pressures all over the intake system, no losses pre filter, not much even post filter pre throttle plate.

Movement of the cam gears and belt will tend to draw air in, but flow path isn't clear, so flow direction at vent is still a guess.
Old 11-20-2013, 12:36 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #18 (permalink)
Registered User
 
Join Date: Sep 2018
Posts: 1
Digging up an old thread I am getting a 1983 928 soon but it doesnt have the tubes. I have already ordered 4 of these. As far as fit at the back and front is it just push on or some other way of sealing as well.
Thanks
Greg
Old 09-01-2018, 01:35 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #19 (permalink)
Registered User
 
stepson's Avatar
 
Join Date: Mar 2010
Location: Texas
Posts: 1,547
Greg,

They just push onto the airbox and also the cam gear cover vent hole.
__________________
John Curry (Drift King) 928OC member
Grand Prix White 1994 GTS AT (The GTS)
Cobalt Blue 1989 S4 AT (The Blue Car)
Indishrot 1984 Euro S AT (The Stepson)
Black Metallic 1984 Euro S 5 speed (The Schwartz)
Old 09-02-2018, 06:17 AM
  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 05:41 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.