Ken-Mt said: (quoted from post at 15:24:12 08/14/08) I specified flat top pistons when I ordered my o/haul kit for a customer"s 1940 "A".Appears that the pistons/sleeves are slightly overbored from stock,no problem.The pistons I received are pop-ups[domed]and the pin height appears to be the same.Will everything clear?If so,will I have to worry about detonation?
The head has to be planed quite a bit before the domes will hit.Once I had the head planed .0125 ( and I think it had been planed once before) on an A to get it flat and there was still no problem with it hitting the domes. As far as detonation, you shouldn't have any problems with that even on 87 octane. Only way you would have any problems is if you could find some old Low Octane Pertroleum Distilate from WW1.
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Today's Featured Article - Tractor Traction - by Chris Pratt. Our first bout with traction problems came when cultivatin with our Massey-Harris Pony. Up till then, this tractor had been running a corn grinder and pulling a trailer. It had new unfilled rear tires and no wheel weights. The garden was already sprouting when we hooked up the mid-mount shovel cultivators to the Pony. The seed bed was soft enough that the rear end would spin and slowly work its way to the downhill side of the gardens slight incline. From this, we learned our lesson sinc
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