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'84 268 Commander, 305 to 318 Swap

dhudge

New member
So, it's looking like my oil press drop (see "305 low oil pressure" thread) is at least partially a result from a blown seal...unconfirmed yet. I've got oil in the bilge after every run and it appears to be losing 1-2 qts per hour. Although unconfirmed, it's looking like I'll need to pull the engine and not knowing how many hrs are on either eng, I'm considering swapping engines out and starting from a clean slate. I've located twin 318's that have been rebuilt from top to bottom and have been in storage since 2008.

Assuming all concerns about engines being in storage for five yrs have been met, is this swap a viable one? Some concerns I have are:
- mounts; does 318 have same eng mount pattern?
- Tranny's; will existing mate up with 318; if not, what ratio (1:1 or 1:1.5 or other?) works with my props?
- props; will current props be adequate or will 318 be over/under powered?

Anyone have experience with this swap out?
 
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