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pietrzj
Monza


Joined: 19 Mar 2014
Posts: 211



PostPosted: Mon Apr 10, 2017 11:35 am    Post subject: cam cover bolts - one job leads to another Reply with quote

Hi,

Changing plu leads, plugs, dizzies and rotors at the moment and notced several lower cam cover bolts (allan studs) are rusted such that I wouldn't be aboe to get then out with an allan key.

Not essentioal for the job I am doing, but while its all stripped down it makes sense to replace them.

Any hints/tips on how to remove them? Any examples of successful removal?

I don't want to shear them off by cold chiselling if there are better techniques to try first.

Jan

Last edited by pietrzj on Thu May 18, 2017 9:39 pm; edited 1 time in total
 
  
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HomersSpiceRack
Newbie


Joined: 02 Apr 2017
Posts: 22



PostPosted: Mon Apr 10, 2017 12:12 pm    Post subject: Reply with quote

Just done the same thing. If you are doing the cam covers you may as well do the plugs, a couple of my ht leads looked in poor condition so I did them. Then you may as well do the oil and filters. Then you might as well do the gearbox oil and filter(if not done within your memory) I then also did or doing, the heater air hoses.

My cam cover bolts were generally ok but I did have one where the hex was rounded. I just hammered a 12 point socket on to it, sorry can't recall the size and it came off a treat.

I have also heard where people have cut a slot in the head and used a flat head screw driver which I have never tried.

good luck thumbsup
 
  
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Cameltoe & Heel
Suzuka


Joined: 26 Jan 2009
Posts: 1026
Location: Preston - Lancs


PostPosted: Mon Apr 10, 2017 1:45 pm    Post subject: Reply with quote

OK you need to read Dec's recent thread on this very topic, IIRC he has some good tips for removing the rusted bolts.

http://911uk.com/viewtopic.php?t=119537

Trev
 
  
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pietrzj
Monza


Joined: 19 Mar 2014
Posts: 211



PostPosted: Mon Apr 10, 2017 3:32 pm    Post subject: Reply with quote

Thanks both. Have ordered replacement bolts and will tentatively give them a go over the next week or two (I have some imperial allan keys I can sacrifice so may try those before drilling out to 6mm

Jan

p.s left back Upper & Lower plug leads were easy. RH I am sure will be more difficult.
 
  
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pietrzj
Monza


Joined: 19 Mar 2014
Posts: 211



PostPosted: Wed Apr 19, 2017 2:24 pm    Post subject: Reply with quote

Still no luck trying to remove the first one (RHS lower frontmost) allan stud.

Have dremilled a flat to use a 10mm wide screwdriver (needs to be wide to catch both sides of the stud), but its not budging.

May have to try heat next, but I am also wondering why I am bothering as I don't need to remove the cover yet. Originally liked the idea that I will have nice shiny new studs in when I do come to remove it.

I am thinking now that if I left it until I removed the cover I would get better purchase if I sheared one off.
 
  
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HomersSpiceRack
Newbie


Joined: 02 Apr 2017
Posts: 22



PostPosted: Wed Apr 19, 2017 3:53 pm    Post subject: Reply with quote

It sounds like you have done a bit of damage to the bolt so why leave a problem to another time and sort it know. I know easy for me to say Smile

I had a similar issue and after I had hammered a socket over the head it flew off but maybe I was just lucky.

Heat would work but the cam cover is plastic so it obviously can take heat but I am not sure how much.

Best of luck.
 
  
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pietrzj
Monza


Joined: 19 Mar 2014
Posts: 211



PostPosted: Thu Apr 20, 2017 11:25 am    Post subject: Reply with quote

HomersSpiceRack - I know what you are saying, and it makes sense for me to do it now, but if I do shear it off I really will have to take the whole cam cover off and that is not my plan right now - I just wanted to change out some of the dodgy looking alan studs.

Did you use a socket over the outside of the alan key head or did you use a torque type socket on the inside?
 
  
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HomersSpiceRack
Newbie


Joined: 02 Apr 2017
Posts: 22



PostPosted: Thu Apr 20, 2017 10:45 pm    Post subject: Reply with quote

As I say it's easy for me to say but if you have gone to the trouble to get this far I would consider sorting the problem. Also, and I hate to say it, if you are changing the bolts change the gaskets.....

Back to you problem. I did hope to pop down to the shed tonight where I still have a socket jammed on the head of a rusty Porsche bolt! but sadly didn't have time. However, to the best of my memory it is a twelve sided/pointed socket, 9mm?, hammered onto the bolt. It certainly didn't then put up a fight.

Have a nagging feeling that it was an imperial socket so will check over the weekend.
 
  
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pietrzj
Monza


Joined: 19 Mar 2014
Posts: 211



PostPosted: Sat Apr 22, 2017 9:27 pm    Post subject: Reply with quote

Well all plug leads, dizzies, rotors and plugs changed successfully.

Just changed the fuel filter - lets just say 13year intervals for new fuel filters is too long!!

I will post a photo of the guck I shook out of it tomorrow!!

Cutting off rusty exhaust bolts now, to replace with A4 Stainless ones.
 
  
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pietrzj
Monza


Joined: 19 Mar 2014
Posts: 211



PostPosted: Sun Apr 23, 2017 2:02 pm    Post subject: Reply with quote

hopefully photo of fuel filter crude below
 



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pietrzj
Monza


Joined: 19 Mar 2014
Posts: 211



PostPosted: Sun Apr 23, 2017 2:05 pm    Post subject: Reply with quote

crud not crude, but either way its pretty filthy. Turned a reddy colour when it dried off. I am guessing as the tank is plastic and the fule lines are mostly rubber all this crud is from fuel.

Can't wait to start her up now, but still need to sort the replacement of my catalytic converter straps before I can
 
  
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HomersSpiceRack
Newbie


Joined: 02 Apr 2017
Posts: 22



PostPosted: Sun Apr 23, 2017 5:20 pm    Post subject: Reply with quote

A late reply but I did promise.. The socket was a 12mm as I thought but when in the shed I realised that the oil drain plug near the long filter was rounded when I did the oil change and I had knocked on a 9/16" socket to remove that.
 
  
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pietrzj
Monza


Joined: 19 Mar 2014
Posts: 211



PostPosted: Sun May 14, 2017 8:18 pm    Post subject: Reply with quote

Thanks all. Perserverence plus gas and a centre punch and chisel got the tough ones free with a little help from a dremel and a hammered on hex socket. All nice shiny alan studs in place now. Will post some photies soon
 
  
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stuttgartmetal
Indianapolis


Joined: 23 Feb 2009
Posts: 2335
Location: Caterham. Surrey


PostPosted: Sun May 14, 2017 8:44 pm    Post subject: Reply with quote

It's very easy to not fit your plug leads correctly.
Run the car with the king lead off each distributor in turn
It should run on 6 both ways.
 
  
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pietrzj
Monza


Joined: 19 Mar 2014
Posts: 211



PostPosted: Mon May 15, 2017 10:36 pm    Post subject: Reply with quote

cam cover 1
 



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pietrzj
Monza


Joined: 19 Mar 2014
Posts: 211



PostPosted: Mon May 15, 2017 10:37 pm    Post subject: Reply with quote

Thanks stuttgartmetal, that what I did, each coil disconnected in turn. Ran smoothly each time Cool
 
  
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pietrzj
Monza


Joined: 19 Mar 2014
Posts: 211



PostPosted: Mon May 15, 2017 10:38 pm    Post subject: Reply with quote

cam cover 2
 



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pietrzj
Monza


Joined: 19 Mar 2014
Posts: 211



PostPosted: Mon May 15, 2017 10:40 pm    Post subject: Reply with quote

I waited and waited for the specific tools to do the job (flexi head 3/8 drive, magnetic plug socket) from Demon Tweeks, but I started and finished the job without them as I rummaged around and found suitable tools that I already had.
 



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pietrzj
Monza


Joined: 19 Mar 2014
Posts: 211



PostPosted: Mon May 15, 2017 10:42 pm    Post subject: Reply with quote

Replaced all the exhaust bolts and cat straps while I was at it. The main cat bracket was snapped, so I got it welded at my local fabricators £20 versus £65 for a new one.
 



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pietrzj
Monza


Joined: 19 Mar 2014
Posts: 211



PostPosted: Mon May 15, 2017 10:43 pm    Post subject: Reply with quote

welded
 



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