Higher compression in late German diesels?

Posted by K.B. on October 02, 2002 at 14:18:34 from (156.99.90.177):

We've got a '79 686 with the D-310, and an '82 786 with the D-358. The 786 will start right up in any kind of cold weather, while the 686 will need the block heater plugged in at anything below 50 degrees. I've heard of other early models (late 706, 756, 826) being a little cold-blooded. I think I remember hearing that the later engines had higher compression pistons. Is this true, and since these engines are basically the same thing, could 786, 886, 3088, 3288 pistons/sleeves be put in a 686 without any problems (problems like the outside of the sleeves being different between early and late blocks)? Also, could someone explain the cold-weather starting feature on the fuel pump to me? I just saw a 756 with a cable in the dash attached to the piece on the side of the pump that moves. Was this cable factory installed or did someone add it, and should I rig somthing like that up on the 686?

Follow Ups:

• Re: Higher compression in late German diesels? K.B.- Thanks! 14:03:39 10/04/02 (0)
• Re: Higher compression in late German diesels? Cliff Neubauer 18:03:07 10/02/02 (0)
• Re: Higher compression in late German diesels? Pete1468 15:08:30 10/02/02 (0)

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