Show full size 924Board.org
Discussion Forum of 924.org
 
 FAQFAQ   SearchSearch   MemberlistMemberlist   UsergroupsUsergroups   RegisterRegister 
 ProfileProfile   Log in to check your private messagesLog in to check your private messages   Log inLog in 
 Technical FAQ924 FAQ (Technical)   Technical924 Technical Section   Jump to 924.org924.org   Jump to PCA 924 Registry924 Registry

I think I killed it :-(
Goto page Previous  1, 2, 3, 4, 5  Next
 
Post new topic   Reply to topic    924Board.org Forum Index -> 931 Tech.
View previous topic :: View next topic  
Author Message
peterld  



Joined: 10 Dec 2006
Posts: 808
Location: Noosa Heads QLD Australia

PostPosted: Wed Nov 11, 2020 12:49 am    Post subject: Reply with quote

Having just done it in the past week, here are my tips for a newby:
Take lots of photos/label all wires/use baggies
Disconnect battery
Drain oil and water
Remove crossover pipe to throttle body
Disconnect turbo from exhaust
Disconnect J pipe from exhaust
Remove distributor
Remove coil
Disconnect cold start injector
Remove inlet manifold
Disconnect heater hoses/TTS wires/Oil pressure wire
Remove cambelt
and then the head
_________________
80/81 932/8 ROW
Back to top
View user's profile Send private message Send e-mail
bureau13  



Joined: 07 Sep 2017
Posts: 349
Location: South Florida

PostPosted: Wed Nov 11, 2020 4:20 am    Post subject: Reply with quote

Excellent, very helpful, thank you!
_________________
-----------------------------------------
1982 931
1986.5 Silver 928S
2007 Hummer H3 (Daily Driver)

Past lives (I miss them all):
2004 RX-8 (Wrecked)
1993 RX-7 (Sold)
1987 RX-7 Turbo II (Sold)
1985 RX-7 GSL (Stolen)
Back to top
View user's profile Send private message
bureau13  



Joined: 07 Sep 2017
Posts: 349
Location: South Florida

PostPosted: Sun Nov 15, 2020 7:09 am    Post subject: Reply with quote

OK, we got a few consecutive minutes without rain so I was able to take a closer look. The two turbo-to-manifold bolts I can reach from the top were amazingly easy to break loose. "Break" barely even applies. I did spray them a few times with PB Blaster, but I can't believe they've been on there from the factory, I think a PO had the turbo off. I haven't tried to get to the other one yet, I'm sure that one will be fun.

I know the J-pipe will be easy because I had that off a few months ago when I replaced my wastegate.

The intake manifold does have me scratching my head. The top bolts are easy, but I can't see how to reach the bottom bolts with everything in the car. It almost looks like it might be easier to just remove the head with both exhaust and intake manifolds still attached. Am I missing something?
_________________
-----------------------------------------
1982 931
1986.5 Silver 928S
2007 Hummer H3 (Daily Driver)

Past lives (I miss them all):
2004 RX-8 (Wrecked)
1993 RX-7 (Sold)
1987 RX-7 Turbo II (Sold)
1985 RX-7 GSL (Stolen)
Back to top
View user's profile Send private message
Carrera RSR  



Joined: 08 Jan 2010
Posts: 2104
Location: Somerset, UK

PostPosted: Sun Nov 15, 2020 8:29 am    Post subject: Reply with quote

bureau13 wrote:
The intake manifold does have me scratching my head. The top bolts are easy, but I can't see how to reach the bottom bolts with everything in the car. It almost looks like it might be easier to just remove the head with both exhaust and intake manifolds still attached. Am I missing something?


All 8 are available to you from the top of the manifold......
_________________
1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252
Back to top
View user's profile Send private message
bureau13  



Joined: 07 Sep 2017
Posts: 349
Location: South Florida

PostPosted: Sun Nov 15, 2020 12:57 pm    Post subject: Reply with quote

Carrera RSR wrote:
bureau13 wrote:
The intake manifold does have me scratching my head. The top bolts are easy, but I can't see how to reach the bottom bolts with everything in the car. It almost looks like it might be easier to just remove the head with both exhaust and intake manifolds still attached. Am I missing something?


All 8 are available to you from the top of the manifold......


Hmmm. I'll look again. Do you think it's advantageous to take it off before removing the head?
_________________
-----------------------------------------
1982 931
1986.5 Silver 928S
2007 Hummer H3 (Daily Driver)

Past lives (I miss them all):
2004 RX-8 (Wrecked)
1993 RX-7 (Sold)
1987 RX-7 Turbo II (Sold)
1985 RX-7 GSL (Stolen)
Back to top
View user's profile Send private message
chuck21401  



Joined: 20 Feb 2005
Posts: 322
Location: Annapolis, MD

PostPosted: Sun Nov 15, 2020 12:58 pm    Post subject: Reply with quote

bureau13 wrote:
I haven't tried to get to the other one yet, I'm sure that one will be fun.


Not too bad actually once the exhaust is out of the way.


_________________
1981 Porsche 931
Back to top
View user's profile Send private message
bureau13  



Joined: 07 Sep 2017
Posts: 349
Location: South Florida

PostPosted: Sun Nov 15, 2020 2:47 pm    Post subject: Reply with quote

That picture helps. I'm curious though, is that a stud? I thought the one with the stud was only on S1 cars. Maybe I read that wrong. I know both of the other two on my car were bolts.

chuck21401 wrote:
bureau13 wrote:
I haven't tried to get to the other one yet, I'm sure that one will be fun.


Not too bad actually once the exhaust is out of the way.


_________________
-----------------------------------------
1982 931
1986.5 Silver 928S
2007 Hummer H3 (Daily Driver)

Past lives (I miss them all):
2004 RX-8 (Wrecked)
1993 RX-7 (Sold)
1987 RX-7 Turbo II (Sold)
1985 RX-7 GSL (Stolen)
Back to top
View user's profile Send private message
chuck21401  



Joined: 20 Feb 2005
Posts: 322
Location: Annapolis, MD

PostPosted: Sun Nov 15, 2020 11:25 pm    Post subject: Reply with quote

My 931 is a 1981 model but the engine and transmission are from a 1980 931.

On my car the turbo is bolted to the exhaust manifold. Two bolts on one side....one bolt on the other. In the picture above the hole where the screw goes is faintly circled in yellow.

Porsche updated the hardware at some point...with these parts....Screw 93112319700 and Sleeve 93112319900. $85 a set X 3



[/img]
_________________
1981 Porsche 931
Back to top
View user's profile Send private message
CÚdric  



Joined: 27 Aug 2004
Posts: 2077
Location: Sweden

PostPosted: Mon Nov 16, 2020 1:14 am    Post subject: Reply with quote

I also went through that tedious process recently. I removed the head with the exhaust and intake manifold still attached. Its bloody heavy so its not something help from a friend, wife or wathever is recommended
_________________
1980 924 Turbo
Back to top
View user's profile Send private message MSN Messenger
bureau13  



Joined: 07 Sep 2017
Posts: 349
Location: South Florida

PostPosted: Mon Nov 16, 2020 2:38 am    Post subject: Reply with quote

Interesting...I guess that explains why my bolts weren't frozen...they were definitely replaced in the past, as they aren't even stock bolts. Regular ol' hex-heads, with no spacers. Hmmm...

chuck21401 wrote:
My 931 is a 1981 model but the engine and transmission are from a 1980 931.

On my car the turbo is bolted to the exhaust manifold. Two bolts on one side....one bolt on the other. In the picture above the hole where the screw goes is faintly circled in yellow.

Porsche updated the hardware at some point...with these parts....Screw 93112319700 and Sleeve 93112319900. $85 a set X 3


_________________
-----------------------------------------
1982 931
1986.5 Silver 928S
2007 Hummer H3 (Daily Driver)

Past lives (I miss them all):
2004 RX-8 (Wrecked)
1993 RX-7 (Sold)
1987 RX-7 Turbo II (Sold)
1985 RX-7 GSL (Stolen)
Back to top
View user's profile Send private message
bureau13  



Joined: 07 Sep 2017
Posts: 349
Location: South Florida

PostPosted: Mon Nov 16, 2020 2:39 am    Post subject: Reply with quote

Time to put the kid to work

C´┐Żdric wrote:
I also went through that tedious process recently. I removed the head with the exhaust and intake manifold still attached. Its bloody heavy so its not something help from a friend, wife or wathever is recommended

_________________
-----------------------------------------
1982 931
1986.5 Silver 928S
2007 Hummer H3 (Daily Driver)

Past lives (I miss them all):
2004 RX-8 (Wrecked)
1993 RX-7 (Sold)
1987 RX-7 Turbo II (Sold)
1985 RX-7 GSL (Stolen)
Back to top
View user's profile Send private message
Carrera RSR  



Joined: 08 Jan 2010
Posts: 2104
Location: Somerset, UK

PostPosted: Mon Nov 16, 2020 6:48 am    Post subject: Reply with quote

bureau13 wrote:
Interesting...I guess that explains why my bolts weren't frozen...they were definitely replaced in the past, as they aren't even stock bolts. Regular ol' hex-heads, with no spacers. Hmmm...

chuck21401 wrote:
My 931 is a 1981 model but the engine and transmission are from a 1980 931.

On my car the turbo is bolted to the exhaust manifold. Two bolts on one side....one bolt on the other. In the picture above the hole where the screw goes is faintly circled in yellow.

Porsche updated the hardware at some point...with these parts....Screw 93112319700 and Sleeve 93112319900. $85 a set X 3



Save your money. Use super strong studs and aerotight stainless locking nuts
_________________
1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252
Back to top
View user's profile Send private message
bureau13  



Joined: 07 Sep 2017
Posts: 349
Location: South Florida

PostPosted: Mon Nov 23, 2020 12:26 pm    Post subject: Reply with quote

I don't think I would want studs there. How would you ever remove the head/intake manifold without removing the turbo?

My two top bolts came out surprisingly easy, but the bottom one is giving me a bit of resistance. I dosed it with more PB Blaster so hopefully tomorrow.

I still don't see an obvious way to the lower intake manifold bolts. Are you just using a long extension and fishing in there until you find it? I can't even see most of the bolt heads! I'm just going to take it out with the head if I can't figure out a better way, it seems people have done it both ways.

Carrera RSR wrote:
bureau13 wrote:
Interesting...I guess that explains why my bolts weren't frozen...they were definitely replaced in the past, as they aren't even stock bolts. Regular ol' hex-heads, with no spacers. Hmmm...

chuck21401 wrote:
My 931 is a 1981 model but the engine and transmission are from a 1980 931.

On my car the turbo is bolted to the exhaust manifold. Two bolts on one side....one bolt on the other. In the picture above the hole where the screw goes is faintly circled in yellow.

Porsche updated the hardware at some point...with these parts....Screw 93112319700 and Sleeve 93112319900. $85 a set X 3



Save your money. Use super strong studs and aerotight stainless locking nuts

_________________
-----------------------------------------
1982 931
1986.5 Silver 928S
2007 Hummer H3 (Daily Driver)

Past lives (I miss them all):
2004 RX-8 (Wrecked)
1993 RX-7 (Sold)
1987 RX-7 Turbo II (Sold)
1985 RX-7 GSL (Stolen)
Back to top
View user's profile Send private message
Carrera RSR  



Joined: 08 Jan 2010
Posts: 2104
Location: Somerset, UK

PostPosted: Tue Nov 24, 2020 12:18 am    Post subject: Reply with quote

I've removed the head twice using studs in the turbo + manifold without removing the turbo.......just lifts straight off. The stud(s) also makes sure the gasket stays straight as your drop the head back on...

Two turbo studs still in place with head off, one is in the exhaust manifold.....helped line up the head to stop the dowel pin scuffing the head as it landed



The 8 bolt holes from the top of the intake, see them .....?


_________________
1980 931 - forged pistons, Piper cam, K27/26 3257 6.10 hybrid turbo, 951 FMIC, custom intake, Mittelmotor dizzy & cam pulley, H&S exhaust, GAZ Gold, Fuch'ed, Quaife
Now www.924board.org/viewtopic.php?t=34690
Then www.924board.org/viewtopic.php?t=31252
Back to top
View user's profile Send private message
bureau13  



Joined: 07 Sep 2017
Posts: 349
Location: South Florida

PostPosted: Tue Nov 24, 2020 3:19 am    Post subject: Reply with quote

Turbo studs: Interesting. I didn't think it would be able to clear those studs, but clearly I'm wrong.

Intake manifold bolts: Oh, hell, I'm an idiot. I was so convinced the bolt holes were on the bottom I completely missed that. No wonder I couldn't see them! Thank you for that picture, that was definitely helpful!
_________________
-----------------------------------------
1982 931
1986.5 Silver 928S
2007 Hummer H3 (Daily Driver)

Past lives (I miss them all):
2004 RX-8 (Wrecked)
1993 RX-7 (Sold)
1987 RX-7 Turbo II (Sold)
1985 RX-7 GSL (Stolen)
Back to top
View user's profile Send private message
Display posts from previous:   
Post new topic   Reply to topic    924Board.org Forum Index -> 931 Tech. All times are GMT + 11 Hours
Goto page Previous  1, 2, 3, 4, 5  Next
Page 3 of 5

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum


Powered by phpBB © 2001, 2005 phpBB Group