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 911 Technical Forum


Reply
 
LinkBack Thread Tools Rate Thread
Author
Thread Post New Thread    Reply
Registered
 
goldsc78258's Avatar
 
Join Date: Nov 2002
Location: San Antonio Texas/Mexico
Posts: 1,100
Send a message via Yahoo to goldsc78258
MFI question

Do you guys know how the flapper box that goes to the filter ataches to the engine? here is a picture the part is in the red circle. if you have any detailed pictures of the bracket and how it ataches plase post them




thanks

Old 08-02-2006, 03:42 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #1 (permalink)
Registered
 
Early_S_Man's Avatar
 
Join Date: Dec 1999
Location: TX USA
Posts: 9,804
Send a message via Yahoo to Early_S_Man
Porsche Crest

Three hex-head M6 bolts to left stack on cadmium-plated stamped steel bracket -- cyl 1 trumpet, illustrated on p. 6 of CMA.
__________________
Warren Hall, Jr.

1973 911S Targa ... 'Annie'
1968 340S Barracuda ... 'Rolling Thunder'
Old 08-02-2006, 05:08 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #2 (permalink)
Autodidactic user
 
David E. Clark's Avatar
 
Join Date: May 2003
Location: Summerfield, NC
Posts: 1,298
Get a copy of CMA and lots of other MFI information here.
__________________
Please help the MFI community keep the Ultimate MFI resources thread and the Mechanical fuel injection resource index up to date. Send me a PM and I'll add your materials and suggestions.

1973 911E Targa (MFI)
Old 08-02-2006, 08:12 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #3 (permalink)
Registered
 
goldsc78258's Avatar
 
Join Date: Nov 2002
Location: San Antonio Texas/Mexico
Posts: 1,100
Send a message via Yahoo to goldsc78258
Thanks Guys
Old 08-02-2006, 08:55 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #4 (permalink)
Registered
 
goldsc78258's Avatar
 
Join Date: Nov 2002
Location: San Antonio Texas/Mexico
Posts: 1,100
Send a message via Yahoo to goldsc78258
Anybody have a close up picture of the area? I can't find anyway to atach it to the stack, maybe I'm missing some parts. If you do please post it

Fred
Old 08-04-2006, 02:57 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #5 (permalink)
Registered
 
sithot's Avatar
 
Join Date: Sep 1999
Posts: 944
Diagrams

Here you go.

Tom

__________________
R Gruppe #111
Early S Registry #235
res ipsa loquitur
Old 08-04-2006, 05:52 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #6 (permalink)
Registered
 
Join Date: Sep 2005
Location: So. Cal.
Posts: 11,249
I will try to get you a close up photo Friday night.
__________________
David

1972 911T/S MFI Survivor
Old 08-04-2006, 06:44 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #7 (permalink)
Registered
 
goldsc78258's Avatar
 
Join Date: Nov 2002
Location: San Antonio Texas/Mexico
Posts: 1,100
Send a message via Yahoo to goldsc78258
Thanks Tom, I've got all the parts I just can't figure out where that plate ataches to the stacks.I think with this picture I'll be able to firgure it out

Daepp That would be great Thanks!

Fred
Old 08-04-2006, 07:15 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #8 (permalink)
Registered
 
sithot's Avatar
 
Join Date: Sep 1999
Posts: 944
One more thing...

FWIW: Porsche issued a bulletin way back (before some of you were born) regarding the suggested removal of the flapper box. The factory thought that there was a distinct possibility that the engine could ingest items pumped through the left hand heat exchanger particular to only the '72-'73 MFI cars. (Plus, it never gets cold enough here to really need it anway)
According to the owner of SSI Chuck Stoddard was questioned about this when they first began making heat exchangers and said it was useless.

That's why they don't make a dedicated left side SSI heat exchanger with the additional heater box for the intake pre-heat.

Tom
__________________
R Gruppe #111
Early S Registry #235
res ipsa loquitur
Old 08-04-2006, 07:21 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #9 (permalink)
Registered
 
goldsc78258's Avatar
 
Join Date: Nov 2002
Location: San Antonio Texas/Mexico
Posts: 1,100
Send a message via Yahoo to goldsc78258
I din't know that ,I'm finishing a 1971 E and wanted to look as stock a possible, I just won't conect it to the heat exchanger. Anyways i don't think mine have a place to conect it to.

Fred
Old 08-04-2006, 07:32 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #10 (permalink)
Registered
 
Join Date: Sep 2005
Location: So. Cal.
Posts: 11,249
Re: One more thing...

Quote:
Originally posted by sithot
The factory thought that there was a distinct possibility that the engine could ingest items pumped through the left hand heat exchanger particular to only the '72-'73 MFI cars.
How could something be ingested if the air filter was properly in place?
__________________
David

1972 911T/S MFI Survivor
Old 08-04-2006, 07:43 AM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #11 (permalink)
Registered
 
sithot's Avatar
 
Join Date: Sep 1999
Posts: 944
Here is the subject as it was discussed on the Early S Registry in 2004.
Roger Grago is with Porsche Motor-sports but was in the dealer system for more years than he cares to remember.

Note Posts #18, #20 and #24

http://www.early911sregistry.org/forum/showthread.php?t=2562&page=2


Tom
__________________
R Gruppe #111
Early S Registry #235
res ipsa loquitur

Last edited by sithot; 08-04-2006 at 12:32 PM..
Old 08-04-2006, 12:30 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #12 (permalink)
Registered
 
Grady Clay's Avatar
 
Join Date: Dec 2003
Location: Arapahoe County, Colorado, USA
Posts: 9,032
First a ’69-’71 doesn’t use this pre-heat flapper.
This is only on the ’72 2.4 and later MFI.


Since we are discussing this ….

The ’72 picked up the air at the heat exchanger. Yes
Porsche was concerned enough to change it again in
’73. The ’73 has another thin aluminum tube going
from the pre-heat exchanger to a small grill on the
left side engine tin. This allows the air to go from in
the engine compartment down that tube to the pre-
heat exchanger and then back up the larger aluminum
tube to the flapper valve.

Here is the ’72 configuration.

"
"
© Dr. Ing. h.c. F. Porsche A.G.
"
"
© Dr. Ing. h.c. F. Porsche A.G.



"
"
© Dr. Ing. h.c. F. Porsche A.G.

1 – Fresh air flap
2 – Hot air flap
3 – Thermostat
A – Hot air
B – Fresh air



"
"
© Dr. Ing. h.c. F. Porsche A.G.

1 – Nut
2 – Spring washer
3 – Washer
4 – Lever
5 – Control box
6 - Nut



"
"
© Dr. Ing. h.c. F. Porsche A.G.

Above is the ‘72 heat exchanger and warm air tube. The
air intake is at the red arrow. In ’73 the area of the red
arrow is closed off and there is a tubular fitting similar to
the green. An aluminum tube goes over the green fitting
and over a fitting on the left engine tin.

A ’73 presented at a Parade concourse better have that tube.

Best,
Grady
Old 08-04-2006, 02:14 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #13 (permalink)
Registered
 
goldsc78258's Avatar
 
Join Date: Nov 2002
Location: San Antonio Texas/Mexico
Posts: 1,100
Send a message via Yahoo to goldsc78258
Thanks you grady, So my car being a 1971 doesn't use a flaper, what does the correct configuiration on the car look like? long intake tube? If you know( and I think you will) please let me know

Thanks again

Fred
Old 08-04-2006, 02:21 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #14 (permalink)
Registered
 
Grady Clay's Avatar
 
Join Date: Dec 2003
Location: Arapahoe County, Colorado, USA
Posts: 9,032
Fred,

This isn’t exactly the best view. Note the air intake horn goes
to the left (passenger side). There is a small paper hose that
goes from a fitting near the air inlet over to the chassis just
forward of the oil filter. This is for warm air and only functions
when you have the heaters on.

“
"
© Dr. Ing. h.c. F. Porsche A.G.

Best,
Grady
Old 08-04-2006, 02:45 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #15 (permalink)
Registered
 
goldsc78258's Avatar
 
Join Date: Nov 2002
Location: San Antonio Texas/Mexico
Posts: 1,100
Send a message via Yahoo to goldsc78258
thanks! I guess one never stops learning about the history on this things huh?

Thanks everybody that responded but I have gotten my answers and gotten a little wiser

Fred

Old 08-04-2006, 02:54 PM
  Pelican Parts Catalog | Tech Articles | Promos & Specials    Reply With Quote #16 (permalink)
Reply


 


All times are GMT -8. The time now is 05:23 AM.


 
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.