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GWGAllisfan

Briggs conversion

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Chris727
I wouldn't do it. The 10 and 16hp blocks have major differences, cooling fins, synchro-balance, and most likely the thickness of the cylinder walls. I beleive the stroke may also differ. The intake valve on the 16hp is also much larger.

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BLT
If that is choice of last resort, the 10 and 16 HP engine have same stroke according to my Briggs crank book. Both engines are dimensionally the same. I think you can get away with same flywheel. The best way is to do a parts comparison. I have both lists. Now will it work? Can't tell you, but I'll bet someone has done it. Could be a little rough at idle without synchro balance. My guess for a minimum parts cost will be for piston, rings and conn rod to convert. You might even get by with same head as I think the head gasket is the same for both. Send me a PM with you home E-mail address if you want them E-mailed.

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firefoxz1
That's like taking a 305 small block and boring it to a 350. Although the stroke maybe the same the cranks are weighted different and you would not have a cylinder wall left or may overheat(Warp) being to thin. Also with the same head the compression would be higher, maybe to high. Most engine only have a maximum of .060 overboring designed into them and small engines possibly only .030.

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Chris727
I believe the head gaskets for the 9 and 10 are the same but not the 16. The 12 through 16 share the same head gaskets. Really the 10hp is sort of an updated 9hp (model 23) I have several models in states of disassembly here and could measure the heads. I know the bolt pattern is quite different.

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