0320 or 0360

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lewisdj1971
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0320 or 0360

Post by lewisdj1971 » Sun Jun 09, 2019 11:41 am

Need some advice. My motor has a tag on sump that states it’s a 0320-E2D. I have angle valve jugs and I read that if the jug length from bottom flange to oil tube gasket is 10 3/4 then it’s a 0360. Mine measure 10 3/4 so what else can I check to verify 0320 or 0360?
:proud: David

lewisdj1971
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Posts: 37
Joined: Wed Jun 05, 2019 11:54 am
Location: French Settlement Louisiana

Re: 0320 or 0360

Post by lewisdj1971 » Sun Jun 09, 2019 11:43 am

I found a serial # on case but couldn’t locate number on lycoming site to verify. The # is 4S753019
:proud: David

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Deano
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Re: 0320 or 0360

Post by Deano » Sun Jun 09, 2019 12:50 pm

It is likely that case number is a casting number rather than a serial or part number, so may be of little use.

I can't help with the type of measurement you're asking about, but I'd think if you were to measure
the stroke, that would provide another clue if not provide the answer you're after.

An O-320 has a 3 7/8" (98mm) stroke.
An O-360 has a 4 3/8" (111mm) stroke.

Given the 1/2" difference in stroke, I'd think you could discern the difference without a lot of trouble.
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Slidin Gator
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Re: 0320 or 0360

Post by Slidin Gator » Sun Jun 09, 2019 1:17 pm

Prop hub bolts.
7/16” = O320 crank
1/2” = O360 crank

Also, if this is the thread you are referring to, note that was all for straight valve motors. Those measurements may not match angle valve jugs.

https://southernairboat.com/phpBB3/view ... 47&t=72134
I grew up thinking I-10 was the Mason Dixon line.
1986 Airboat Engineering Inc., 14' Marsh Master. Refreshed narrow deck, SV O-540, 72” NGQ. A Bob Stossel original.

lewisdj1971
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Re: 0320 or 0360

Post by lewisdj1971 » Sun Jun 09, 2019 2:33 pm

Thanks for the info guys. I’ll check hub bolts and stroke and that should give me the answer
:proud: David

lewisdj1971
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Location: French Settlement Louisiana

Re: 0320 or 0360

Post by lewisdj1971 » Sun Jun 09, 2019 2:36 pm

I assume the hub bolt measurements are bolt diameter?
:proud: David

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Slidin Gator
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Re: 0320 or 0360

Post by Slidin Gator » Sun Jun 09, 2019 4:31 pm

lewisdj1971 wrote:I assume the hub bolt measurements are bolt diameter?
Yes, bolt diameter, or thread size.
I grew up thinking I-10 was the Mason Dixon line.
1986 Airboat Engineering Inc., 14' Marsh Master. Refreshed narrow deck, SV O-540, 72” NGQ. A Bob Stossel original.

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