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hi could anyone tell me if the 16 hp and 18 hp opposed twins cylinder heads are interchangeable? i heard the difference in horsepower is the bore....i have a 18hp opposed twin and have to replace the head...got one on the internet and it was for a newer engine..mine is a 1982..i found one that is from a 16hp around the same vintage as my motor and it looks identical to the 18hp i have...thanks

Yes and the difference in hp, 16 - 18, is the stroke not the bore.

Walt Conner

Tinkerer200 said:

Yes and the difference in hp, 16 - 18, is the stroke not the bore.

Walt Conner

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i wasn't sure...someone said it was the bore....so the heads are the same? thanks you for the reply..

For your own satisfaction, go here http://www.mymowerparts.com/pdf/Briggs-&-Stratton-Parts-Manuals-IPL/ pick the model numbers for both engines and compare the part numbers.

Walt Conner

Tinkerer200 said:

For your own satisfaction, go here http://www.mymowerparts.com/pdf/Briggs-&-Stratton-Parts-Manuals-IPL/ pick the model numbers for both engines and compare the part numbers.

Walt Conner

Click to expand...

thank you...i have the model number for mine...the 18hp....but not for the 16hp....i bought the 16hp heads from ebay...my heads have 42-1 and 42-2 stamped on them and the 16hp heads do also...thanks