1985 928 Intake Removal - Rennlist Discussion Forums
Rennlist Discussion Forums   classifieds | membership | rennlist | photo album    
sponsors | upload photo | chat    
 
Go Back   Rennlist Discussion Forums > Water Cooled Technical Discussion Areas > 928 Forum
Sign in using an external account
Register Forgot Password?
Search

Reply
 
Thread Tools Search this Thread
Old 01-13-2006, 02:08 PM   #1
RngTrtl
Addict
Rennlist Member
 
RngTrtl's Avatar
 
Join Date: Dec 2005
Location: DFW, TX
Posts: 949
Send a message via ICQ to RngTrtl
Default 1985 928 Intake Removal

Dear All, 1985 928 auto 32v 5.0

I have gone over the board throughly (I think) and I have not been able to find any information/tips on removing the intake manifold/s so that I can replace the gaskets and vacuum lines that are under there. I have seen the info for the 78-84 and for the 87+, but not any for the 85-86. I do have the manuals on cd so that helps, but I also know that there is alot of info left out of those. If anyone would please offer me any advice, I would greatly appreciate it. Thanks
To remove this ad, register today or login if you already are registered!


Last edited by RngTrtl; 01-13-2006 at 07:46 PM.
RngTrtl is offline   Reply With Quote
Old 01-13-2006, 02:38 PM   #2
JEC_31
User
 
JEC_31's Avatar
 
Join Date: Aug 2003
Location: DFW
Posts: 1,603
Default

The most important tool is time, as that intake has more parts than the average Kia.

I rememer a long afternoon of nothing but cleaning all 20 hose clamps...
JEC_31 is offline   Reply With Quote
Old 01-13-2006, 02:38 PM   #3
Dave Howerdel
User
 
Dave Howerdel's Avatar
 
Join Date: Apr 2004
Location: Central NJ
Posts: 1,989
Default

RngTrtl,
First off welcome to Rlist.
The intake removal is fairly easy as you take note of hose routing etc. Simplifying it:
1)Remove intake sides(rubber/hoseclamped connectors)
2)Disconnect fuel hoses, rail/injectors 10mm bolts. and remove.
3)Unbolt intake and remove taking care not to drop any debris into the head. 13mm bolts
4) now your free to check/replace hoses, gaskets etc.
Oh and while your in there, might as well replace the ISV as well.
Dave Howerdel is offline   Reply With Quote
Old 01-13-2006, 02:43 PM   #4
Jim bailey - 928 International
Addict
Rennlist Member

Rennlist
Site Sponsor

 
Join Date: Jul 2001
Location: Anaheim California
Posts: 11,552
Default

The 85-86 intake is pretty easy since it comes apart where the 11 rubbber boots and 22 hose clamps hold it together. The intake runners are joined so two intakes come off together but this modular design makes it much easier to access than the later 87 > intake where all eight runners are a single casting. Just be very careful not to drop anything into the intake ports and do not be surprised or alarmed to find residual blow by oil coating the inside of the intake.
Jim bailey - 928 International is offline   Reply With Quote
Old 01-13-2006, 02:44 PM   #5
Shane
Sharkaholic
Lifetime Rennlist
Member
 
Shane's Avatar
 
Join Date: May 2002
Location: Rochester, WA
Posts: 5,158
Default

The injector rails and injectors need to be pulled, your spark plug wires will have to be removed from the fuel rails to allow removal of the rails. Mark where all of the vacuum lines go so as not to get them mixed up when you put it all back together. Once you have the fuel stuff out of the way it will be easy to identify what is next and how it comes apart. 10 bolts for the intake and hose clamps for most of the rest. Pretty easy once you get into it, but it looks like a maze when it is altogether and a little intimidating. If you run into some thing you can find a place for when you do reassembly, post a pic of it and we can help guide you to where it goes. HTH
__________________
Beth... '86.5 928S Auto #2641 Garnet Red Metallic/Burgundy Stage III Supershark 32Vr -2░ 0░
Heidi... '86.0 928S Auto #0223 Garnet Red Metallic/Burgundy Fire turned it crispy in '04 (parts car)
Shane is offline   Reply With Quote
Old 01-13-2006, 03:26 PM   #6
Big Dave
928 Engine Re-Re-Rebuild Specialist
Rennlist Member
 
Big Dave's Avatar
 
Join Date: Oct 2001
Location: Milwaukee
Posts: 7,603
Default

Welcome to the forum!

When I did my rebuild, I kept a copy of the vacuum hose diagram since I knew it was a common question. You can ignore the valve circled in green....that's the one I removed since I deleted my air pump.

Hope this helps. As the others have said, removing the intake is fairly easy once you start turning the wrenches.

Click the image to open in full size.
__________________
1985 928S Auto Black/Black, Chipped, Ott X-over - reborn twice!
2005 Acura TL
2013 Chevy Suburban
2013 Cadillac CTS4
My 928 Home Page
Big Dave is offline   Reply With Quote
Old 01-13-2006, 04:30 PM   #7
SteveG
Addict
Rennlist Member
 
SteveG's Avatar
 
Join Date: Jul 2001
Location: New York
Posts: 5,171
Default WYIT

1. Someone already mentioned the ISV?
2. Have injectors cleaned?
3. Powder coat intake?
4. Replace "U" shaped fuel line on the firewall. I think it there are two back there, one connects using only clamps, no threading and on mine it was a fire waiting to happen.
5. The covers use a special rubber backed washer. You can get them or an identical replacement from Fastenal for 1/10th what Porsche will charge you.
__________________
928 '93 GTS, A/T, slate grey metallic, Konis, RMB, new Behr rad, Greg's oil lines.
928 '85, 5-sp, Schwarz/Burgundy, gone but not forgotten.
SteveG is offline   Reply With Quote
Old 01-13-2006, 05:22 PM   #8
ssimchock
New User
 
Join Date: Jan 2006
Posts: 2
Default

Quote:
Originally Posted by SteveG
5. The covers use a special rubber backed washer. You can get them or an identical replacement from Fastenal for 1/10th what Porsche will charge you.
Do you have a part number or a place to purchase the Fastenal washer?
ssimchock is offline   Reply With Quote
Old 01-13-2006, 07:45 PM   #9
RngTrtl
Addict
Rennlist Member
 
RngTrtl's Avatar
 
Join Date: Dec 2005
Location: DFW, TX
Posts: 949
Send a message via ICQ to RngTrtl
Default

Man, I can hardly believe the greatness that y'all (yes I live in mississippi! ) have given me. Thanks alot for all the help. I have lusted after the 928 since I was a wee tott of a child and I lucked on to one on ebay during thanksgiving for 2k. im doing this ona college budget so the cheap hints are great! Im gonna start turning the wrenches on Mon. (We get General Robert E. Lee b-day off from school). Thanks again, im glad to hear that there are no "big deals" in this intake. Y'all take care.

p.s.: i am assuming that now would be a good time to also check the preload on the flexplate to prevent TBF huh?

~RngTrtl
RngTrtl is offline   Reply With Quote
Old 01-13-2006, 07:51 PM   #10
jeff jackson
User
 
Join Date: Oct 2004
Location: Suburban St. Louis in Illinois.
Posts: 877
Default

Rng Trtl... Monday (here in Lincolnland...is "Martin Luther King day") ...hence no school. Funny coincidence...no ???
jeff jackson is offline   Reply With Quote
Old 01-13-2006, 07:54 PM   #11
Shane
Sharkaholic
Lifetime Rennlist
Member
 
Shane's Avatar
 
Join Date: May 2002
Location: Rochester, WA
Posts: 5,158
Default

Not really needed on the 86 as on the higher hoss power S4's. The only time I got any really noticable movement out of mine was after I had run with the supercharger.
__________________
Beth... '86.5 928S Auto #2641 Garnet Red Metallic/Burgundy Stage III Supershark 32Vr -2░ 0░
Heidi... '86.0 928S Auto #0223 Garnet Red Metallic/Burgundy Fire turned it crispy in '04 (parts car)
Shane is offline   Reply With Quote
Old 01-13-2006, 07:59 PM   #12
RngTrtl
Addict
Rennlist Member
 
RngTrtl's Avatar
 
Join Date: Dec 2005
Location: DFW, TX
Posts: 949
Send a message via ICQ to RngTrtl
Default

The Robert E. Lee b-day thing is kinda a joke, offically it is MLK day, but seeing is how we learn how to whistle Dixie before we learn twinkle twinkle lil' star, we call it The General's Day
RngTrtl is offline   Reply With Quote
Old 01-15-2006, 11:37 PM   #13
RngTrtl
Addict
Rennlist Member
 
RngTrtl's Avatar
 
Join Date: Dec 2005
Location: DFW, TX
Posts: 949
Send a message via ICQ to RngTrtl
Default

Dear All helpers,

Thanks for all the help and insight for the removal on the intake and associated stuff with it...Note to the future removers. Rather than trying to remove the fuel rails with the injetors attached to them from the intake manifolds, I suggest undoing the clips on the injectors that secure them to the rail and leaving them on the intake when lifting the fuel rail. Then undo the injector wires then remove manifolds, then remove injectors from the intake manifolds. This is what worked for me. I found that on the 1st try that i almost broke a fuel injector trying to get the rail and injectors off as a complete assembly. The rail actually popped passed the upper clip on the fuel injector leaving the injector on the intake anyway. Thank goodness that it didn't break the injector as this happened. After I removed all the clips, the rail popped off with no problems. I hope this helps.
RngTrtl is offline   Reply With Quote
Old 01-16-2006, 12:56 AM   #14
figgen
User
 
figgen's Avatar
 
Join Date: Jul 2001
Location: Calgary, Alberta - Canada
Posts: 313
Default

for some good info on the 85-86 MY check out:

http://groups.msn.com/thediygang
figgen is offline   Reply With Quote
Old 02-03-2006, 08:34 PM   #15
RngTrtl
Addict
Rennlist Member
 
RngTrtl's Avatar
 
Join Date: Dec 2005
Location: DFW, TX
Posts: 949
Send a message via ICQ to RngTrtl
Default

Another few questions to all...I have gotten all the intakes sandblasted and painted and clear-coated. Tomorrow I plan to start reconstruction.
Question #1, Do I need any kind of sealant for the two large O-rings that go in the air guide and MAF? I have 1 rather large one that fits into the airguide, and 1 that fits around the MAF. Both just seem to pop in and/or around, but i would think that there would need to be some kind of sealant that is needed (like some gasket seal or something).
Question #2, I have used a tad of Vaseline (Petroleum Jelly) around the fuel injector seals to get them to seat right on other projects and have heard that this is good practice. Can I use just a tad of axle greese the same way for the injectors of this 928? The only reason I ask is that I do not have any Vaseline laying around, but do have axle greese. Buying some would be no problem, but I am curious because they have the same consistancy.
Question #3, Should I put the fuel injectors in the manifolds before I mount them or after, and then mount the fuel rail on top of them? I would think that it would be easier to mount them into the intake 1st then mount the intakes, and then the fuel rail, but then I run the risk of fouling up an injector huh?

Thanks to all for all the help. Y'all Rock!!
RngTrtl is offline   Reply With Quote
Old 02-03-2006, 08:34 PM
Rennlist



Paid Advertisement
Reply

Similar Threads
Thread Thread Starter Forum Replies Last Post
oil pan job TheLlamaGod 944 Turbo and Turbo-S Forum 6 10-31-2013 12:20 AM
Putting a turbo in the middle of a V8? 17prospective buyer 928 Forum 12 07-30-2013 12:26 PM
928 coolant leak growlrt 928 Forum 4 05-01-2013 08:04 PM
Milkshake all over! 1985.5 944 lina944 944 & 944S2 Forum 7 01-25-2013 06:49 PM
Help - Need engine compartment photos 86.5 928 thezonster 928 Forum 12 11-08-2012 07:34 PM


Tags
1985, 928, 928s, bolts, fuel, intake, porsche, rail, refresh, removal, remove, removing, rennlist, runners, upper

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Forum Jump


All times are GMT -3. The time now is 05:18 PM.


Powered by vBulletin® Version 3.8.7 AC1
Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.6.1
Copyright ę 1998 - 2007 Rennlist.com

Advertise on Rennlist - Privacy Statement - Terms of Service - Jobs