Cleaning and paintng engine on 26/27. Painted oil pan lower flat large inspection plate with 17 bolts. While cleaning bolts, I noticed 3 are about 1/4" longer than the other 14.
Can't located in my manual where the 3 longer bolts go back.
Two at rear end and one at front end center? All three at front end?
Any assistance appreciated.
Don't think they were different lengths from Ford? Maybe some accessory has been fitted at some time - or the std screws were lost and replaced by longer ones by some previous owner? They will likely work fine wherever you place them
The pan itself has slightly longer bolts at a few positions where the corner reinforcement brackets sits on 1925-27 engines
OK, thanks. I'll go out and check where the support braces are located. I had a feeling that the shorter bolts would go through the block and into the holding irons, but had three longer bolts left over.
This one part that didn't change from its introduction through '27. They should all be 7/16" long. Kind of an odd length so Roger is probably right about them being replacements.
O.K., R.V. (or anyone else) while we're on this topic, are there any other places in a T engine assembly (specifically 26-27), where multiple bolts of the same length are used and what is their correct length? Head bolts are obvious, so no need to review them. Also, when using bolts and castellated nuts, like on the pan to block and hogshead to pan, how did Ford do it at the factory; nuts up or nuts down?
Pan and hogshead nuts go on top except for the bolt under the timer. The length of the 16 crankcase to block bolts is 1-7/32", as are two of the bolts for the aluminum hogshead. The remaining 8 hogshead bolts are 1-3/32". The bolt that goes under the timer is 7/8" and the other 4 that hold the timing gear cover are 11/16". The bolts used with iron hogsheads may be slightly different but I have nothing in the records to indicate such. The exception here would be the bolts under the starter on the iron covers; these are shorter (I believe 23/32") and of course use no nuts.
Just found one change: the 8 trans. cover bolts changed to 1-3/16" long. apparently about the time of the change to the sloping inspection door.
Thanks a lot. I'm sure this info will be helpful to many, like myself, who didn't bag and mark everything when disassembling.
As long as the rods don't hit em a little longer will be ok.