Dropping Heat Exchangers on a '75 - Rennlist - Porsche Discussion Forums

Notices

Dropping Heat Exchangers on a '75

Reply

Old 10-22-2016, 11:52 PM
  #1
SeaCay
Thefu
Rennlist Member
Thread Starter
 
SeaCay's Avatar
 
Join Date: Sep 2003
Location: 28*09'58.16" N, 82*35'17.07" W
Posts: 17,609
Default Dropping Heat Exchangers on a '75

How the hell do you get the top bolts off on the forward connection between the headers and the heat exchangers themselves? This on the 1.8 L engine.

I had a '71 many moons ago, the exhaust was much simpler to drop (other than the risk to breaking the exhaust head studs). Buddy's son just got himself a fairly nice '75 and we're going through it little by little. Any help is appreciated.

Also, just noticed the air control bellows cable is broken. I heard the bellows was NLA, but there may be a VW or some other part that is a direct replacement. Anybody have a part number for us?

TIA!
SeaCay is offline  
Reply With Quote
Old 10-23-2016, 12:47 PM
  #2
skl
Official Wednesday AM Red Bull F1 test driver
Rennlist Member
 
skl's Avatar
 
Join Date: Apr 2003
Location: Iowa 1/2, North Scottsdale 1/2
Posts: 7,186
Default

Not familiar with later exhaust systems, especially if it's a later model with CA emissions, but try asking over at 914 world. Lots of info there.
skl is offline  
Reply With Quote
Old 10-23-2016, 11:21 PM
  #3
SeaCay
Thefu
Rennlist Member
Thread Starter
 
SeaCay's Avatar
 
Join Date: Sep 2003
Location: 28*09'58.16" N, 82*35'17.07" W
Posts: 17,609
Default

Well we got it done, finally. Had to go buy an air hammer to break the damn nuts and bolts off.

Found a place that sells new thermostats.

Now we're chasing down an issue with the air flow meter. Ain't these things grand???
SeaCay is offline  
Reply With Quote
Old 10-24-2016, 08:26 PM
  #4
dr914
User
 
Join Date: Jun 2014
Posts: 356
Default

what is the air flow meter problem?
dr914 is offline  
Reply With Quote
Old 10-24-2016, 10:44 PM
  #5
SeaCay
Thefu
Rennlist Member
Thread Starter
 
SeaCay's Avatar
 
Join Date: Sep 2003
Location: 28*09'58.16" N, 82*35'17.07" W
Posts: 17,609
Default

Originally Posted by dr914 View Post
what is the air flow meter problem?
It's intermittently sticking, sometimes at part throttle, mostly at full deflection though.

Car's running rich now as well. Plugs are black now. A month ago they were pretty decent.

As near as we can tell the car is unmodified as far as the fuel injection and ignition systems are concerned.
SeaCay is offline  
Reply With Quote
Old 10-25-2016, 12:49 PM
  #6
dr914
User
 
Join Date: Jun 2014
Posts: 356
Default

if the air flow meter flap is sticking, it MUST be replaced with a rebuilt one, sticking will of course make the car run rich and dilute the oil as well. The flap sticks most after the engine is well warm (when it needs to be the leanest!) and all of the metal (including the air flow meter) expands. I think that air flow meter replacement will immediately solve your rich problem
dr914 is offline  
Reply With Quote
Old 10-25-2016, 01:05 PM
  #7
SeaCay
Thefu
Rennlist Member
Thread Starter
 
SeaCay's Avatar
 
Join Date: Sep 2003
Location: 28*09'58.16" N, 82*35'17.07" W
Posts: 17,609
Default

Originally Posted by dr914 View Post
if the air flow meter flap is sticking, it MUST be replaced with a rebuilt one, sticking will of course make the car run rich and dilute the oil as well. The flap sticks most after the engine is well warm (when it needs to be the leanest!) and all of the metal (including the air flow meter) expands. I think that air flow meter replacement will immediately solve your rich problem
Thanks Doc. That's one of the first, of many, purchases in the near future.

Any recommendations on a good source?
SeaCay is offline  
Reply With Quote
Old 10-26-2016, 02:22 PM
  #8
dr914
User
 
Join Date: Jun 2014
Posts: 356
Default

we have many rebuilt on the shelf, have them rebuilt by fuel injection corporation, they take awhile and are sort of hard to deal with now that the kids have taken over the dad's business, but do a good job.
dr914 is offline  
Reply With Quote
 

Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
JamesP
993 Forum
4
11-17-2017 09:27 PM
GilesM
964 Forum
9
06-11-2017 04:19 AM
Nikedog
996 Forum
29
05-08-2017 09:47 PM
Rich007
911 Forum
0
06-17-2016 05:30 PM
Mrmerlin
928 Forum
63
06-01-2016 09:04 AM

Thread Tools
Search this Thread
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 06:47 AM.


Copyright ę 1998 - 2017 Rennlist.com We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: