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Re: Re: Re: D310 Help Me Understand?
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Posted by K.B. on June 09, 2004 at 12:57:44 from (209.163.43.124):
In Reply to: Re: Re: D310 Help Me Understand? posted by Allan in NE on June 09, 2004 at 11:24:34:
Allan, this is somthing I've always been confused about myself. If you check the parts manual for the 310 or 358 engine, it will list several different pistons. It will specify "high-ratio" pistons for late-model 3088 tractors. However, if you go to the service manual, it will state that all 310 and 358 engines have 16:1 compession. I can't remeber where, but I have seen the 15:1 compression ratio listed somewhere. Now, I have spent many hours on a '70 826 with a 358, a '79 686 with a 310, a '81 786 with a 358, and a '82 3088 with a 358 (an early model, the 104th one built). I have also been around 706's and 756's with 310's. The 786 and the 3088 start ten times easier than any of the older tractors. So, I think it is obvious that the compression was raised from 15:1 to 16:1 at some point in time, but I would like to know when, and if putting late-model pistons in an early engine is possible, and if it improves starting.
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