I need help with Penta 5.7L prop shaft diameter

[riggingroguerider61]

I'm on the hunt for the prop shaft diameter for a Penta 5.7L engine, but I'm coming up short with my online searches. If anyone has the specs or can direct me to a trustworthy source, I'd really appreciate it

 

[WishkerTwch]

I'm on the hunt for the prop shaft diameter for a Penta 5.7L engine, but I'm coming up short with my online searches. If anyone has the specs or can direct me to a trustworthy source, I'd really appreciate it

you know, it's best to find a service manual or detailed parts diagram for your specific Volvo Penta sterndrive (which the 5.7L hooks up to).
Websites like MarinePartsEurope.com or your local Volvo Penta dealer's parts counter are often the most reliable sources for these exact dimensions. They can look it up by your drive's serial number

 

[bluewater_tartan]

In general if you're looking at Volvo Penta 5.7L setups from 1991 and later, the prop shaft diameter is usually about 1-1/4 inches. Older models might be a bit smaller so if you have the specific year or serial number that'll help you confirm it

 

[Piajempi]

In general if you're looking at Volvo Penta 5.7L setups from 1991 and later, the prop shaft diameter is usually about 1-1/4 inches. Older models might be a bit smaller so if you have the specific year or serial number that'll help you confirm it

That's the thing with these might situations, they're not definitive answers. I know you're trying to help, but it's not a specific answer. @riggingroguerider61 have you considered reaching out to Tartan to get this info?