Pelican Parts Forums - Spendo's Engine rebuild.

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- - Spendo's Engine rebuild. (http://forums.pelicanparts.com/porsche-912-technical-forum/733429-spendos-engine-rebuild.html)

Spencer, Laurence,

I live in a very humid climate here in the Netherlands, having the 912 in winter storage for several months. Not that I have an obsessive fear for rust, but I try to prevent where I can. My advise/suggestion was perhaps a bit overdone for your situation.

Otto

Has or does anyone use a coil condenser? My car had one (beru sk 213/3) I'm thinking it is for noise reduction? Also do I need it? it was attached to the fan shroud up near the coil and connected to the coil. Not sure if I need to replace with a new one or is it something I can live without. You can see it in my very first engine picture. to the left of the coil.

Thanks
Spencer

Spencer:
The"condensor" (capacitor) mounted on your car is there to lessen radio interference caused by generators and ignition systems. These were quite common years ago on virtually all cars, but most newer radios and alternators have built-in capabilities to deal with interference. They were typically mounted in the ground circuit of the generator or on the coil. Here's some examples of earlyBosch VW applications:
http://forums.pelicanparts.com/uploa...1386196622.jpg
Bill

Hi Spencer,

These capacitors where indeed used for noise suppression, needed for the AM (Amplitude Modulation) radio frequency bands (AM/MW, LW and short wave), the only used until the 60's. With the development of frequency modulation (FM on UHF, UKW) in these years the need for the noise suppression was not that important anymore. The frequency modulation is not sensitive for the noise. Not all radios where equiped with the "modern" FM receivers and the noise suppression for the AM radios was mounted. Perhaps the Original radi in your 912 was a simple AM/LW radio. If I'm right the Blaupunkt Bremen was used in the early 912's

Assuming that you will not listen to AM radio, you can live without. However, sometimes these noisy electrical sparks reach the AF (low frequency) part of the radio circuit and can be audible during FM reception. In that situation you will need a noise suppression, but that can be done near the radio power supply connection.

My '66 had a whole battery of these capacitors and I've put them in the NOSTALGY-box on the shelf. Apart from their possible functionality, these capacitors will be too old to do their job right. Internal leakage and internal chemical reactions change their value and even can cause internal short circuits or a complete loss of capacity.

If you need some noise suppression - I didn't with a Blaupunkt Frankfurt in my '66 and '68 - use modern equivalents, which can be bought for afew dollars.

The above is simplified explanation, but I hope it makes things a bit clear to you.

Otto

thanks to both of you. that helps a ton.

I have a new problem. I have put the fan shroud back on and there is a throw off margin of about a 1/2 inch between the crank pulley and the fan pulley. fan pulley is out farther than the crank. I obviously did not make note of this when I took the engine apart. is this normal or did I miss something?

Spencer

Check to see if the pulley is on the shaft correctly. When I bought my 1969 car, the generator pulley was put on backwards, and it stuck out a bit. i didn't even notice until it the belt started wearing out fast!

Ed T

Everything is in order as far as I know. checked and double checked. Still think something I did is wrong though. There is a picture on my first page that looks like it was off before I started but seems like that much throw off would be wrong. guess ill find out when I start it.

Any updates? I got myself into a 912 project recently...

Subscribed.

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Just in case someone has not posted this rebuild. The only problem was freeing 40 years of melting together. the clutch pedal to the shaft was tough to get apart but lots of heat and persistence finally worked, then putting the new pin back in. all the rest was easy. if you haven't done this to your car I suggest it. still a long way off from driving. working on a year and a half now. And still working.

Spencer

http://forums.pelicanparts.com/uploa...1414705529.jpg

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Well she's all back together and running. the thing to the left is a starting stand that I can run the engine and check for leaks before I put it back up. Sounding good but a few more adjustments and up she goes. Two years in the making Every nut and bolt has been redone. New exhaust. The old one was rusted out.

Hi Spencer, thank you so much to post regularly our job....
It's very interesting and remember to me when i rebuild my 69 engine.
With your thread, you reneval my motivation for rebuilding my 2 others 65 engine !
If you want looking the pics of, please go to this link
I reneval my congratulation for our quality work

JLC from FRANCE

So sorry for my poor US language...

The first 65 sitting 20 years in the grass !
https://www.flickr.com/photos/27602244@N08/sets/72157633452672823/

My 69
https://www.flickr.com/photos/27602244@N08/sets/72157627582823169/