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
 
Rod Schneider's Avatar
 
Join Date: Jan 2006
Location: Ball Ground, GA
Posts: 148
Question Running Without the Air Pump?

1988 928S4, is there any harm in removing the air (smog) pump and the associated plumbing? Passing an emissions test is not a worry. I'd just like to clean up under the hood a bit........

__________________
Rod Schneider
Ball Ground, GA
88 928S4, 87 Corvette,
88 Fiero GT, 16 Mustang EcoBoost
Old 05-16-2014, 07:24 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered
 
harborman's Avatar
 
Join Date: Dec 2009
Location: SW MIchigan
Posts: 2,236
Garage
Unless there is a problem with the air pump, I would just leave it alone. It has a filter which does need cleaning/replacement at times. If replaced, I think you would need different belts as well.
__________________
1986 928S
32 valve engine
All stock, automatic, 539 Weissgold Metallic, 70K original miles, Hankook Ventus 2 tires.
Previously owned: 67 Vette, 427 L88 Stingray, 74 De Tomaso Pantera L. Latest addition: 2000 BMW Z3 Roadster
Old 05-17-2014, 03:58 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
928-Electrics Guy
 
Alan in AZ's Avatar
 
Join Date: Jun 2007
Location: Phoenix AZ
Posts: 715
It particularly aids cold cat performance, but air injectios does help other cat performace too.

Generally the stock cats clean well enough to pass US emissions requirements without this if the engine is running right. I'm certain many cars have inoperative airpumps/diverters/vacuum actuators and the owners don't even know. Of course some states require it be there visually (most don't).

You can just cut the belt and remove, to clean up you'd have to remove the pump & its plumbing, diverter valve & vac actuator. Then cap the port to the airbox, seal off the feed port to the cats and plug the vacuum line.

Quite a lot of work to free up a little not very useful space. Unless its noisy or you need to put something in place of the pump it isn't going to change the visuals or gain performance...

Even if noisy - you could just remove the belt for the same benefit.

Alan
__________________
1994 928 GTS Black/Black Manual
Old 05-17-2014, 08:03 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered
 
Rod Schneider's Avatar
 
Join Date: Jan 2006
Location: Ball Ground, GA
Posts: 148
Thanks for the replies--the belt is already off of it, so I wanted to make sure it wouldn't hurt to be non-operational. I recently pulled the air pump system off of my 87 Corvette, which did get rid of a lot of "extra" plumbing around the engine. It does look like it would improve access to the right bank spark plugs to get rid of the diverter valve and hose, but I may just leave it for now.......

__________________
Rod Schneider
Ball Ground, GA
88 928S4, 87 Corvette,
88 Fiero GT, 16 Mustang EcoBoost
Old 05-18-2014, 11:57 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Reply


 


All times are GMT -8. The time now is 02:49 PM.


 
Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2025, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2025 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.