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Message 8 of 8
Posted by member Richard on Thursday 16 July 2020
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Message 7 of 8
Posted by member Richard on Thursday 16 July 2020
More prop pics
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Message 6 of 8
Posted by member Richard on Thursday 16 July 2020
I am back again (let membership lapse)
I have been busy with loads more jobs done, calorfier fixed, webasto fixed, vhf fixed, loose cleats fixed, led engine bay lights, engine overheat issue, and many many more numerous jobs attended to.
My latest problem is speed or rather lack of it.
Clean bum and props, 1800rpm both engines (MD22L non turbo 59bhp each) 6 to 6.5 knots, max revs 3000tpm 8.28 knots.
Now I realise she is no speed freak, but I would like to see at elast 10 knots should I need it.
1800rpm is a nice plodder speed, engine noise is acceptable as is the ride.
From what I can gather the 27 is rare, and a 27 with twin md22l is super rare
So I guess my question is, does anyone know what size/pitch prop would have been fitted from new?
I think it may have been downpropped/repitched as it was on the broads for some time.
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Message 5 of 8
Posted by member Richard on Saturday 21 July 2018
Thanks for all the replies
Yesterday I had the cabin floor up and did a couple of little jobs whilst i was down there, bilge float switch/snapped stern gland stud/replaced a few broken p-clips all simple stuff/adjust starboard engine tickover as it was to low, not by much but enough to cause the boat to judder when in gear at idle.
I did notice all the floor to timber supports where the neoprene seal is fitted was well past its sell by date, so I replaced all of the neoprene seal which was very easy to do.
The cupboard with the captains seat on and the one behind it was removed/taken home/varnished and both lined with 10mm neoprene sheet (theory was to stop the box drumming) and refitted today, again I fitted 1.5mm neoprene to the bottom edges so there was no actual timber to timber contact, all the screw down brackets that hold the cupboards to the floor were replaced as more than half of them were missing.
With great trepidattion I started the engines and thought wow thats so much better, so it was pretty much as Simon said above, the noise was escaping from everywhere and anywhere.
Best of all when the good lady turned up a few hours later and I started the engines even she could notice the difference.
Peter the floor has the std foam/lead/sliver foil stuff underneath which certainly seems to help.
I have got some more sound deadening material coming and when I service the engines/incl cambelts later on this year I will add the extra insualtion everywhere it will fit
Clive I have written the article name down and thst my next job
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Message 4 of 8
Posted by member Simon Kidd on Monday 16 July 2018
Hi Richard.
Are they the TAMD22's on Sterndrives or shafts? I know a few Hardy 27's were built with the 59hp, 78hp and possibly the 105hp units on shafts and SX drives - so a few different versions out there.
Although not in a Hardy 27, I have had some experience with the Volvo MD22/TAMD22 series. As Peter says the units are Perkins, they are Perkins Prima engines developed from the old Austin Montego 2.0 Deisel. Landrover (your correct!!), fitted them to the Early Diesel Freelanders 1998 - 2000 ish, they were then called the Rover L series. I have one of these Freelanders and the engine was a great little unit - but not as smooth as the later generation BMW unit. Overall I think the MD22 was a good unit for its day - a new development was the squish-lip piston to improve combustion -not a bad engine - remember to change the CAM belts at appropriate interval though!.
The boats I've operated with the MD22 series are usually singles, the engines tended to be quite raucous up close (Engine Hatch open), but good sound insulation should deaden them down well. I surveyed a Broom 31 the other day with a TMD22 - and it was very quiet indeed. As, all in all, so long as your engine mounts are all good (do check these - bad engine mounts make a lot of noise), it's likely to come down to sound insulation - and the past noise will take through engine vents and the like. Even a slightly poorly fitting engine hatch will make a large difference.
A number of other installations (not Volvos) of high revving engines I see have been boxed in with tighter boxes - i.e. the Merryfisher 805, 925 etc. These use tight-fitting sides and removable panels with heavy engine insulation to really knock the sound down. Ducting tubes are fitted to take in air from baffled vent boxes.
If no H27 owners appear, you might also have a look for posts on sound insulation for Diesel Family Pilot 20's - these had the same unit (single on Sterndrive) but being a smaller boat, the engine is very close to the crew! I'm sure some owners have upgraded the insulation on these boats.
Best Regards
Simon
Hardy Tech Sec.
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Message 3 of 8
Posted by member Peter Cox on Monday 16 July 2018
Richard
Welcome to the Club. I had twin Yanmars in my 27 (I now have a 32) and I don't remember them as particularly noisy but it's all subjective; I don't know your engines at all, except that a quick Google search says that they are in fact Perkins engines, which might help with spares. Assuming that your engines are below the wheelhouse and not in the lazarette, a few suggestions:
Make sure there is adequate soundproofing (the thick silver foil-fronted foam sheet type) on the underside of the wheelhouse floor.
If there's none there already, install soundproofing on the forward and aft engine compartment bulkheads and possibly on the sides of the compartment, possibly the eggbox type that stops sound bouncing around (for this point and the one above, get fireproof or at least fire-resistant type).
Consider carpeting the wheelhouse, plus a sound-reducing underlay, again fire resistant.
Keep the cockpit doors closed to reduce the noise from the exhaust and props.
I hope that current 27 owners with your engines will be along soon.
Peter
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Message 2 of 8
Posted by member Clive ffitch on Monday 16 July 2018
Hi Richard,
Could check the two articles in my reply to your other intro post - may have some helpful info?
Our 75 outboard on our Family Pilot can get a bit noisy at higher revs/planing 4K revs up, but I guess that is a fact of life with the equivalent of a small car engine stuck on the back!
I guess two engines makes a difference - twice one - but don't know in practice. I've always thought diesels generally a bit quieter than petrol o/bs. All relative to engine sizes as well I guess.
Not sure if any of that helped!
Clive
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Message 1 of 8
Posted by member Richard on Saturday 14 July 2018
Aka Perkins Prima as fitted to Austins of years gone by.
Anyway my first ever question is, how do other 27 owners find the noise of the engines?
The noise is quite simply amazing, running at anything over 1800rpm means you are shouting at each other, it is like being in one of my old Landrovers!
Can anyone comment on what the cruising and top speed of a 27 fitted with twin MD22 engines should be?
I have loads more questions, but I will try not to mix them all up and confuse things
Thank you
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