HR 36 Re-engine

[misterhino]

I am looking to re-engine a HR36, the original Volvo unit, an MD22 is no longer made.
Does anyone have any input on the following
Best replacement engine, I was looking at a Volvo D2-60
Any known issues in re-engining this boat.

 

[Nina Lucia]

We still have the original 2003T, which we managed to fix and keep running, we have bought lots of second-hand, and are ready to be replaced. I think, sometimes, it's better with the devil that you know.
Otherwise Beta or Vetus, another rebuild d2-50?

 

[johnalison]

Your best bet would be via the HROA. Have a look at their site and think about joining as I assume you don’t already. There is a lot of technical information and a forum for such queries.

 

[TSB240]

Just out of interest how many hours has the MD22 done? Leyland Van's had a reputation for doing 100,000's of miles and many report similar hours on marinised versions.

 

[Whaup367]

Your best bet would be via the HROA. Have a look at their site and think about joining as I assume you don’t already. There is a lot of technical information and a forum for such queries.

Seconded.

Also note that Parts4engines sell a rebuild kit for the MD22: https://parts4engines.com/collections/volvo-penta-md22-parts

In your shoes (which, in a sense, I am; as I have an original 3750hr MD22p in an HR36...), I'd be looking into that option quite hard before trying to change to anything else. I'm not convinced a "newer" engine has a lot to offer over the original, though open to being persuaded otherwise.
My starting point would probably be deciding who to get to do the work; then discussing options with them.

 

[DownWest]

I had the Perkins Prima base unit for the MD22 in a van and it was a very good unit. Worth looking at a rebuild.

 

[Bobc]

I replaced my MD22 with a Beta 50. Quieter, more torque, lower revs, cheaper spares. Altogether better.

Sits straight on the same engine bearers. You just have to replace the prop, as it turns the other way (great opportunity to fit a Featherstream).

 

[Tranona]

While any of the 50-60hp engines would fit the space with relatively small modifications it is important to look at access for servicing. The MD22 has the exhaust and cooling on the port side looking aft, fuel and electrics on the other side and seawater pump at the aft end. All the newer engines are the other way round. Most have the filters etc plus the seawater pump on the front face, although the Volvo has filters on the starboard side. The main access to the engine on your boat is on the port side and the front so important to check access to the starboard side, particularly with the Volvo D2.

 

[Whaup367]

The HR37 interior layout is almost identical to our HR36s, except that it's a mirror image with the access to the engine room from the starboard side instead of port. Can't help thinking now that this is because they fitted the D2-55 as standard instead of the MD22p that was current when the HR36 was designed...

 

[Tranona]

The HR37 interior layout is almost identical to our HR36s, except that it's a mirror image with the access to the engine room from the starboard side instead of port. Can't help thinking now that this is because they fitted the D2-55 as standard instead of the MD22p that was current when the HR36 was designed...

Exactly. That is why I was raising the issue. It looks like the 36 does not have access to the starboard side of the engine, although the calorifier seems to be located there. Not a big problem with a Beta or Nanni as the service points are at the front and the electrical bits on the port side. The fuel pump. injectors and glow plugs are on starboard but don't require frequent access. Does your 37 have some access on the port side for the starter and alternator? On my Bavaria with a Volvo there was a big hatch in the aft cabin for the service points and a smaller one in the loo on the port side for the electrics.

 

[robmcg]

If the replacement Volvo Penta engine has the dreaded MDI box then probably look at a different brand to replace with. Google Volvo Penta mdi failure to head down the rabbit hole.
Unless your MD22 is knackered, and you have to go some to knacker them then I wouldn't really look to replace. Parts are available......and relatively cheap if you buy the Perkins rather than Volvo Penta parts.

I took had a Perkins Prima engine in a Maestro van back in the day. The van had galactic mileage and received little servicing in its later life. Engine was sweet as a nut unlike the brakes, bodywork and electrics in the rest of the van .

 

[Whaup367]

.... Does your 37 have some access on the port side for the starter and alternator? ...

I have a 36, like the OP; Original MD22p but had wondered why HR had changed the layout for the 37 (without actually changing the layout)...

 

[Tranona]

If the replacement Volvo Penta engine has the dreaded MDI box then probably look at a different brand to replace with. Google Volvo Penta mdi failure to head down the rabbit hole.
Unless your MD22 is knackered, and you have to go some to knacker them then I wouldn't really look to replace. Parts are available......and relatively cheap if you buy the Perkins rather than Volvo Penta parts.

I took had a Perkins Prima engine in a Maestro van back in the day. The van had galactic mileage and received little servicing in its later life. Engine was sweet as a nut unlike the brakes, bodywork and electrics in the rest of the van .

The MDI issue is long past - nearly 10 years since it was a problem The engine has been in production since 2003/4 and the dodgy units were only in the period 2013-6 and all affected engines were offered a replacement. Rabbit hole is well blocked up now. OP would likely be buying a new engine - and even if it is a used one it would almost certainly have a unit to the latest spec.

 

[robmcg]

The MDI issue is long past - nearly 10 years since it was a problem The engine has been in production since 2003/4 and the dodgy units were only in the period 2013-6 and all affected engines were offered a replacement. Rabbit hole is well blocked up now. OP would likely be buying a new engine - and even if it is a used one it would almost certainly have a unit to the latest spec.

I know of 3 separate boats with VP MDI failures. All engines were post 2019 so not sure the Mdi woes are completely sorted .

 

[Sandy]

Have you had a look at?

Used Engine Boats For Sale in South West | Marine Enterprises Ltd |

 

[Turnnidge]

I have replaced the MD22 in my HR36 mk1 with a Beta 50, as bobc said the Beta turns the other way so also went with a feather stream. 2 seasons in and I am happy withe the decision.