Hello Volkszone,
My name is Al, I'm rebuilding a 1200. I have a pre65 1200 case.
Here is my project
1960 Kastenwagen.
I have enjoyed this Thread for a week now and have read through it several times. I also checked out those links to bug-talk etc...
To gain some knowledge to rebuild my 1200 to gain the best HP.
Can I use a 74mm crank, is it possible? If I cannot, then I will want to use a 69mm counterweighted crank. I would of used the 64mm, but they don't sell these in a 4140 counterweighted, I don't want to get it welded counterweight.
I have noticed that the main bearings from the 64mm crank have a smaller Inner Diameter, when trying to fit to the 69mm cast crank.
And the Outer Diameter of the 69mm bearings have around 2mm gap when fitted into the 1200 case. The case has hardly any wear and the 64mm bearings fit perfectly. Can I use 69mm bearings that will fit correctly on the 1200 case, if so do I just get the measurements from the crank and buy the bearings. Just confusing. After reading Hot 1200 installing the 69mm without any problems.
Is this because he used a post65 1200 case ?
I'm hoping for over 70hp. Is this possible or am I dreaming.
--Al