Sealine S41 with Yanmar 300/Mercruiser Bravo 2 outdrives. Any owners or previous owners?

[ozzie]

A good friend of mine bought a Sealine S41 with the Yanmar 300 6LP engines and Bravo 2 drives last year. Unfortunately he has had issues with the legs and transom shields, all of which have now been replaced with new along with new stainless steel props. The engines have been checked over and fully serviced. Are there any owners or previous owners who could shed some light on the likely speeds/RPM he should be achieving I can pass on??

 

[jointventureII]

A good friend of mine bought a Sealine S41 with the Yanmar 300 6LP engines and Bravo 2 drives last year. Unfortunately he has had issues with the legs and transom shields, all of which have now been replaced with new along with new stainless steel props. The engines have been checked over and fully serviced. Are there any owners or previous owners who could shed some light on the likely speeds/RPM he should be achieving I can pass on??

That's a lot of torque to be putting through a sterndrive leg - do you know if the new legs are the X version (which are for diesels)?

 

[Greg2]

Probably worth asking on the Sealine Forum

 

[ozzie]

Probably worth asking on the Sealine Forum

He has tried the Sealine forum with no success....

 

[Switch]

I think I remember reading that the Yanmar powered S41’s had issues in the early days with some boats being re-engined with VP’s. MBY did a used boat report on the S41/2/3 maybe 10 years ago. It was mentioned in there. I’ll try to dig it out as I think I still have the magazine.

 

[bluetooth]

Did he buy it from cobbs quay?

 

[Sticky Fingers]

I think I remember reading that the Yanmar powered S41’s had issues in the early days with some boats being re-engined with VP’s. MBY did a used boat report on the S41/2/3 maybe 10 years ago. It was mentioned in there. I’ll try to dig it out as I think I still have the magazine.

That’s definitely correct. IIRC, @nicho had one that had been reengined by Sealine

 

[ozzie]

No, didn't come from Cobbs Quay. I had it wrong, they are new aluminium props

 

[Greg2]

I think I remember reading that the Yanmar powered S41’s had issues in the early days with some boats being re-engined with VP’s. MBY did a used boat report on the S41/2/3 maybe 10 years ago. It was mentioned in there. I’ll try to dig it out as I think I still have the magazine.

Yes, early on the engines we’re too beefy for the drives and had a tendency to trash them IIRC. We nearly bought one that had been re-engined with a VP KAD - we pulled out for various reasons but I remember there was a high moisture reading where the old seacock for the Yanmar engine cooling (they didn’t draw raw water through the legs) had been blocked up - not very well apparently.

 

[Elessar]

Yes, early on the engines we’re too beefy for the drives and had a tendency to trash them IIRC. We nearly bought one that had been re-engined with a VP KAD - we pulled out for various reasons but I remember there was a high moisture reading where the old seacock for the Yanmar engine cooling (they didn’t draw raw water through the legs) had been blocked up - not very well apparently.

I bought one of the Yanmars from Sealine and put it in my Bayliner!

Bravo 2 drive the beefiest of the all. Use a drive shower to keep in cool on the plane. Not drawing water through the leg made the heat issue worse.

 

[nicho]

That’s definitely correct. IIRC, @nicho had one that had been reengined by Sealine

Yes, we bought a S41 that had just been re-engined by Sealine with KAD 300’s and new Volvo legs - 30 hours only on the engines. It ran perfectly well. The Yanmar engines originally fitted were fine, it was the Mercruiser legs that were a disaster and overheated. Sealine made mods which sprayed water on the legs, but to no avail, hence the very expensive re-engining. I am sure the Yanmar/Mercruiser combination would be fine on a river, but not at sea. The other S41 issue was the hull - chine riding and sudden uncommanded lunges left or right was common, and scared my wife to death - it took me back to my rallying days, being easier to drive at speed through forests! We loved the interior accommodation - second to none in the class imo. We swapped for an S48 and the seakeeping was truly awesome. In conclusion, be aware the S41 is not too happy at sea unless flat calm, (fixed with chine changes on the S42, and beware of the Yanmar/Mercruiser combo if speed is involved.

 

[ozzie]

Yes, we bought a S41 that had just been re-engined by Sealine with KAD 300’s and new Volvo legs - 30 hours only on the engines. It ran perfectly well. The Yanmar engines originally fitted were fine, it was the Mercruiser legs that were a disaster and overheated. Sealine made mods which sprayed water on the legs, but to no avail, hence the very expensive re-engining. I am sure the Yanmar/Mercruiser combination would be fine on a river, but not at sea. The other S41 issue was the hull - chine riding and sudden uncommanded lunges left or right was common, and scared my wife to death - it took me back to my rallying days, being easier to drive at speed through forests! We loved the interior accommodation - second to none in the class imo. We swapped for an S48 and the seakeeping was truly awesome. In conclusion, be aware the S41 is not too happy at sea unless flat calm, (fixed with chine changes on the S42, and beware of the Yanmar/Mercruiser combo if speed is involved.

That's useful to know, but the boat is based on the south coast so will be used at sea! The legs are brand new so hoping that won't be an issue now, he is just trying to find someone with experience of this engine drive combination to see if his speeds and rpms are in the right ball park.

 

[Momac]

There is nothing wrong with Yanmars, nothing wrong with the Mercruiser legs. But, as said , the two are incompatible as the legs can't take the power /torque from the Yanmar.
That's why boats were re-engined with Volvo engines and drives under warranty. I guess boat builders don't do recalls so some boats were not corrected.

 

[nicho]

There is nothing wrong with Yanmars, nothing wrong with the Mercruiser legs. But, as said , the two are incompatible as the legs can't take the power /torque from the Yanmar.
That's why boats were re-engined with Volvo engines and drives under warranty. I guess boat builders don't do recalls so some boats were not corrected.

There should have been a full recall imo. I believe owners had to push pretty hard to get it re-engined as you might imagine! Guess a Sealine did not make too much profit on this model. In spite of it’s waywardness, we did like the boat very much..

 

[Elessar]

There is nothing wrong with Yanmars, nothing wrong with the Mercruiser legs. But, as said , the two are incompatible as the legs can't take the power /torque from the Yanmar.
That's why boats were re-engined with Volvo engines and drives under warranty. I guess boat builders don't do recalls so some boats were not corrected.

That’s not true. A bravo 2 is fine if you keep it cool. They swing big props too so it makes the boat planted for a stern drive.

The bravo 3 was more fragile but even then ok if you cool it. A drive shower is cheap.