learning the hard way... my '62 Coupe.
- Peter Schueren
- 356 Fan
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- Joined: Wed Jan 25, 2023 12:07 pm
- Location: Germany (Münster)
Re: learning the hard way... my '62 Coupe.
Harlan,
that does not help much right now as i am stuck with the engine as it is (and the exhaust)
The guys who rebuilt the engine have a good name and have been doing porsche engines for a long time.
My worst mistake probably was my small local workshop who did not know much about 356 and did not take care with those fat manifolds... ... This is something I hope to get right now. Afterwards I have to find someone for the routine maintenance. I will follow your advice but I can not go back in time...
peter
that does not help much right now as i am stuck with the engine as it is (and the exhaust)
The guys who rebuilt the engine have a good name and have been doing porsche engines for a long time.
My worst mistake probably was my small local workshop who did not know much about 356 and did not take care with those fat manifolds... ... This is something I hope to get right now. Afterwards I have to find someone for the routine maintenance. I will follow your advice but I can not go back in time...
peter
- Peter Schueren
- 356 Fan
- Posts: 188
- Joined: Wed Jan 25, 2023 12:07 pm
- Location: Germany (Münster)
Re: learning the hard way... Look at the plugs!!!
Friends,
here are pictures of my spark plugs showing what happened....
Peter
here are pictures of my spark plugs showing what happened....
Peter
- Jacques Lefriant
- 356 Fan
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- Joined: Mon Dec 06, 2010 1:50 pm
- Location: Washoe county NV
Re: learning the hard way... my '62 Coupe.
Hi Peter
to me that #2 plug washer indicates an off center repair of the spark plug hole. not ideal. to improve the heat transfer it might be advisable to surface the top of the hole.
j
to me that #2 plug washer indicates an off center repair of the spark plug hole. not ideal. to improve the heat transfer it might be advisable to surface the top of the hole.
j
- Peter Schueren
- 356 Fan
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- Location: Germany (Münster)
Re: learning the hard way... my '62 Coupe.
Hello Jacques,
the engine had been totally rebuilt including welding the heads and newly drilled spark plug holes. As I was told the whole damage results from putting in those plugs with an iron fist.. or is it calles "ham fisted". I will point to the possibility you describe, thank you!!!
Peter
the engine had been totally rebuilt including welding the heads and newly drilled spark plug holes. As I was told the whole damage results from putting in those plugs with an iron fist.. or is it calles "ham fisted". I will point to the possibility you describe, thank you!!!
Peter
- Jacques Lefriant
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- Location: Washoe county NV
Re: learning the hard way... my '62 Coupe.
Hi Peter
addressing this issue is done usually especially if the head is off the engine. to do it in place is trickier.
j
addressing this issue is done usually especially if the head is off the engine. to do it in place is trickier.
j
- Martin Benade
- 356 Fan
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- Joined: Wed Nov 23, 2011 10:52 am
- Location: Cleveland, Ohio
Re: learning the hard way... my '62 Coupe.
I wonder if the welded and rethreaded holes got Helicoils? Originally it would have had them.
Cleveland Ohio
62 Cabriolet
56 VW
02 IS 300
04 Sienna
62 Cabriolet
56 VW
02 IS 300
04 Sienna
- Jacques Lefriant
- 356 Fan
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- Joined: Mon Dec 06, 2010 1:50 pm
- Location: Washoe county NV
Re: learning the hard way... my '62 Coupe.
Hi Martin
the 911 of the late sixties and all subsequent ones did not use Helicoils. Interesting the 4-Cams and some early pushrod engines had Bronze inserts for the plugs. Wilhoit uses i believe 12mm or 10mm spark plug with a longer reach to lessen the chance of cracks developing. The obvious problem with Peters head is the top of the hole was not faced orthogonal to the axis during thee repair.
j
the 911 of the late sixties and all subsequent ones did not use Helicoils. Interesting the 4-Cams and some early pushrod engines had Bronze inserts for the plugs. Wilhoit uses i believe 12mm or 10mm spark plug with a longer reach to lessen the chance of cracks developing. The obvious problem with Peters head is the top of the hole was not faced orthogonal to the axis during thee repair.
j
- Martin Benade
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- Location: Cleveland, Ohio
Re: learning the hard way... my '62 Coupe.
I guess lots of aluminum heads are not heli coiled.
I thought that washer was crushed like that because the plug went in crooked, cross threaded, although I’d think that would have taken quite a lot of torque.
I thought that washer was crushed like that because the plug went in crooked, cross threaded, although I’d think that would have taken quite a lot of torque.
Cleveland Ohio
62 Cabriolet
56 VW
02 IS 300
04 Sienna
62 Cabriolet
56 VW
02 IS 300
04 Sienna
- Jacques Lefriant
- 356 Fan
- Posts: 4602
- Joined: Mon Dec 06, 2010 1:50 pm
- Location: Washoe county NV
Re: learning the hard way... my '62 Coupe.
I think the repair was affected in place without removing the manifolds and maybe later it was welded later. It may had been better off using a "Time-Sert" or a Big Sert. the repair kit comes with a counterbore but it only serves to make the top of the insert flat when installed. https://time-sert.com/standard-time-ser ... s-inserts/
j
j
- Peter Schueren
- 356 Fan
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- Joined: Wed Jan 25, 2023 12:07 pm
- Location: Germany (Münster)
Re: learning the hard way... my '62 Coupe.
Hold it!!!!
The engine had been rebuilt - totally including the heads by AHNENDORP. I have described this in my post. Then this like-new engine was put back in the car by my local workshop. These people while changing the plugs damaged the threads so hard that they damaged the plugs too.The people at Victor Günther Motorsprort in Cologne had the car for the final adjustment of the new webers on the roller dynamometer. They discovered the damage and stopped their work. Now it is back at Ahnendorp who will have to repair it. The insurance of my little workshop will pay for this.
It was real bad luck that some ham-fisted guy at my small local workshop had put those plugs in...
Peter
The engine had been rebuilt - totally including the heads by AHNENDORP. I have described this in my post. Then this like-new engine was put back in the car by my local workshop. These people while changing the plugs damaged the threads so hard that they damaged the plugs too.The people at Victor Günther Motorsprort in Cologne had the car for the final adjustment of the new webers on the roller dynamometer. They discovered the damage and stopped their work. Now it is back at Ahnendorp who will have to repair it. The insurance of my little workshop will pay for this.
It was real bad luck that some ham-fisted guy at my small local workshop had put those plugs in...
Peter
- Harlan Halsey
- 356 Fan
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Re: learning the hard way... my '62 Coupe.
Maybe while the engine is back at AHHNENDORP those experts can properly fix the carburetor linkags, jets, accelerator pumps, so that their rebuild runs?
- Peter Schueren
- 356 Fan
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- Location: Germany (Münster)
Re: learning the hard way... my '62 Coupe.
Yes, that is my intention to get that fixed properly....but the car was running before this devil killed the threads...
The final adjustment on the roller dynamometer was planned as the last step. There are few specialists around that can do this. But it really makes a difference as I have experienced many years ago on my MG.
The final adjustment on the roller dynamometer was planned as the last step. There are few specialists around that can do this. But it really makes a difference as I have experienced many years ago on my MG.
- Peter Schueren
- 356 Fan
- Posts: 188
- Joined: Wed Jan 25, 2023 12:07 pm
- Location: Germany (Münster)
Re: learning the hard way... my '62 Coupe.
Today I got the meassage that plug holes have been rebuilt. They will tell me what they did exactly. They did some work on the carbs too so that they can be finally adjusted. Something was wrong with the electric gas pump - some kind of safety mechanism that stops the pump after some time when the engine is not running (sorry, I can not describe it better).
Somehow I get the feeling that I am on my way to a reasonably good 356.... I presume that my 356 was a bit too much for my local workshop.
Peter
Somehow I get the feeling that I am on my way to a reasonably good 356.... I presume that my 356 was a bit too much for my local workshop.
Peter
- Phil Planck
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- Peter Schueren
- 356 Fan
- Posts: 188
- Joined: Wed Jan 25, 2023 12:07 pm
- Location: Germany (Münster)
Re: learning the hard way... my '62 Coupe.
I have to thank for the support...for me this old porsche cost a real lot of money.. and more than once I thought this is one of my really big mistakes. In these moments it was a great help to know there are a number of people around that will encourage me, support me, help me to laugh about the whole thing and get on with it.
peter
peter