Penta 275 A

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merky1761

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Hi, I need some help with my 1988 SunRunner 225. I have a Volvo Penta 225 E engine coupled with a 275 A outdrive. My outdrive is toast. I have been looking for a complete replacement but have not found any with the "A". So what is the difference between the 275 and 275 A? Also, I have read of others swapping their 275 with a 280 and even a 290 DP. Is this true, and is it a direct bolt on?
 
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captmello

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Re: Penta 275 A

Welcome.

I don't know the difference between the 275 and 275A, could just be the gear ratio, but thats just a guess. From what I've seen, most of the 275s seem to have been used on the 4 cylinder engines so make sure your replacement has the correct gear ratio. 1.61:1 is what you need. A 280 may bolt up, but again I'm not sure.:confused:
 
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merky1761

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Re: Penta 275 A

captmello said:
Welcome.

I don't know the difference between the 275 and 275A, could just be the gear ratio, but thats just a guess. From what I've seen, most of the 275s seem to have been used on the 4 cylinder engines so make sure your replacement has the correct gear ratio. 1.61:1 is what you need. A 280 may bolt up, but again I'm not sure.:confused:
Click to expand...

The gear ratio is 1:61:1. I found a 275 of same year from a V-8 motor. But don't want to sink that much money unless I know for sure it fits.
 
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merky1761

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Re: Penta 275 A

After looking at the drive it appears the gear set in the lower unit are fine, the gear ratio is determined by these gears? correct? Can I use another outdrive and replace the lower unit gears with mine? Are the upper and intermediate the same? I can pick a 275 or 280 up for a decent price but there out of a 4 cylinder engine.
 
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captmello

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Re: Penta 275 A

Swapping gears is not for the inexperienced. You're better off finding a complete used outdrive, IMO.
 
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merky1761

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Re: Penta 275 A

captmello said:
Swapping gears is not for the inexperienced. You're better off finding a complete used outdrive, IMO.
Click to expand...

I am a auto mechanic by trade, 11 years before changing careers, still have all the tools. Not claiming to be a boat mechanic but I think I can handle it. Just trying to save some money. I would like to find a complete drive, but the only one I found was $1600.00
 
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