Engine Upgrade - Perkins 4107 to What?

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SteveNotlob

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Hello all, I have purchased a Marine Projects 31 with 2x knackered Perkins 4107 diesel engines.
I would like to replace these with a more modern engine BUT I do not want to upgrade the sterndrives - Enfield 130's (cost factor).
I wish to use the vessel in tidal & coastal waters around the Irish Sea so would like some more grunt.
It seems the Enfield sterndrives can handle up to around 70HP from a diesel at around 3000 RPM or so.
Ideally the new(er) engines would be similar size to the Perkins 4107 so there is not too much faffing around with the mounts, etc.

Thanks in advance.
Steve
 
Thanks guys, i will look into both.
I had a quick look at the Lancing Marine site and was interested in the Ford FSD and Peugeot diesel engines. Both have plenty of parts available and are in the power range I want. Don't like the cost of the marinising bits though..... :-(
 
SteveNotlob said:
Thanks guys, i will look into both.
I had a quick look at the Lancing Marine site and was interested in the Ford FSD and Peugeot diesel engines. Both have plenty of parts available and are in the power range I want. Don't like the cost of the marinising bits though..... :-(
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Have a look @ Nanni, quality marinized Kubota engines, your stern will raise 3 > 4 inches with these lighter engines & the engine beds dropped / lowered to accommodate
 
You could consider Perkins Prima engines. They were available at 60 and 80hp (Turbo) outputs. I think they were in the Montego and Sherpa van. Also the Volvo MD22, TMD22 and TAMD22 engines were rebadged and reworked(TAMD22) Primas.
 
SteveNotlob said:
Thanks guys, i will look into both.
I had a quick look at the Lancing Marine site and was interested in the Ford FSD and Peugeot diesel engines. Both have plenty of parts available and are in the power range I want. Don't like the cost of the marinising bits though..... :-(
Click to expand...
Not many people do like spending money !
 
scottie said:
Not many people do like spending money !
Click to expand...

Yeah, but money is short and I am willing to pay out the cash on the engine, hence why I am keeping the Enfield drives instead of upgrading to Volvo or other Stern drives and big engines.
I have budgeted around £5000 for the 2 engines. So, unless I am incredibly lucky and find a pair of engines to suit my needs and just 'drop-in' then it is 2nd hand low mileage engines from scrappers and marinise myself from Lancing (or others) parts.
Big project but not the first time i have done something like this and i am looking forward to it :-)
 
My dad replaced a Perkins 4108 in a shaft drive boat years ago. He used a Nissan van engine. I think the model was an SD22 or SD23. It was a great engine and I’ve heard of them being used in other boats. I think the key thing to get is an engine that has a steel or cast iron block and head. Lots of Diesel engines have aluminium heads.
He marinised it himself and the only tricky bit was making the water cooled manifold.
I’ve also heard of transit engines being marinised
 
I was going to suggest a couple of early Transit engines, cheap as chips and still plentiful in 2.5 guise, non turbo so no lag, heat, or shock loadings, smaller then the Perkies, cheap as chips for spares and water cooled manifolds can be bought cheaply.
 
Dino said:
My dad replaced a Perkins 4108 in a shaft drive boat years ago. He used a Nissan van engine. I think the model was an SD22 or SD23. It was a great engine and I’ve heard of them being used in other boats. I think the key thing to get is an engine that has a steel or cast iron block and head. Lots of Diesel engines have aluminium heads.
He marinised it himself and the only tricky bit was making the water cooled manifold.
I’ve also heard of transit engines being marinised
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Both these engines were bored and stroked versions of the earlier SD 20 engine and are 2.2 or 2.3 litre and the larger SD 25 was an even larger version, all inherently reliable and used in multiple applications, naturally aspirated units.

Toyota were another unit worth looking at as they produced some excellent diesels and one of the best units for reliability is the Toyota engine used in the Daihatsu Fourtrak which is legendary for reliability and long life, most Fourtrak's are rotting away now and still their engines are exceeding 500,000 miles without major work and you can get the non turbo Fieldman for simplicity.
 
SteveNotlob said:
sterndrives - Enfield 130's (cost factor).
I wish to use the vessel in tidal & coastal waters around the Irish Sea so would like some more grunt.



Thanks in advance.
Steve
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If you are seriously going to use the aquisition in the Irish Sea
'Grunt' as you call it is needed
The Vessel you have bought has a chequered History and was the basis of a great Marque
Lots to see and learn about them if you research on this Forum etc
Forgive Me, I do not know your boaty experience or would hate to dampen your enthusiasm
Enfield drives are quite old pieces of kit by now
May be perfectley servicable
The 4107's originally fitted did 'marry' up well to the Enfield drives
4108's were used as well
If you are going to use the boat in sheltered waters
Just get engines that will be ok, like some have said
A 'Transit' diesel etc
You say you would like to use the boat in the Irish Sea
Whereabouts I ask, if you don't mind
It is My 'Playground' that's all
Might be able to advise
Good Luck
K
 
Kawasaki - My area of interest is roughly South end of Anglesey and up to maybe Whitehaven. Over 30 years experience, RYA Coastal Skipper. Never wished to go for Yacht Master Practical but I have sailed in West Scottish / Hebrides waters in another MP31 fitted with 2x Ford Diesels @ 60HP each, and owned several yachts, sailing as far North as the Faroe Isles and as far South as North end of Bay of Biscay.
Now I am getting noticeably Grey in the hair I am quite happy to 'plod' along in the smaller area as mentioned above.

Dino / Assassin -The 2.5 transit engine is one of the engines i have been giving serious consideration too. The Japanese engines mentioned are interesting but where would I buy the marinisation parts from?

Thanks for all the input everybody - much appreciated.
 
Not sure where you'll get marinising parts for a Nissan. My dad is a serious DIY man so he made some parts and got machine shops to make some other parts like a bell housing adaptor.
I'd say a good option would be to go the Lancing Marine route with Transit engines.
They do kits here https://www.lancingmarine.com/pricebookpages/page10.html
If you can pick up two decent used engines and get them overhauled then the marinising kits will certainly get you most of the way. Another issue will be mating them to the enfield drives and mounting on suitable engine beds. And to be honest, you should probably rebuild the outdrives while your at it.
 
I have noticed the Perkins Sabre M65 and M80T engines (I believe the M80T is a M65 with turbo bolted on). They seem the same or very similar in size to the 4108. Any thoughts on these engines?
Thanks
 
Id say the main issue is getting a decent base engine, they are prized by the landrover lads for conversions. Then add the marinisation bits but I suspect they are all pretty standard bar the exhaust manifold - check ASAP supplies. Do a search on ybw for TAMD22's, there's a bit of info on here about these engines.

However I would have thought the most economical swap was the Peugeot 1.9 conversion. However I remember a guy I know had a MacLackan 22 ex-lifeboat with twin 4108's on enfields, he was going to reengine with Peugeots but I think thought better of it, rebuilt the 4108's and chucked them back in.
 
Ferris,
I think the old McLackan Lifeboat Tender in Howth had two Transit engines fitted. It was owned by on of the guys who worked in the yacht club. Was for sale a few years ago.
 
That's the one Dino. Fred did a lovely job on it mechanically but then didn't use it and sold it on. Interesting boat.
 
So, I have pretty much narrowed it down to :- replace the old knackered 4107's with 4108's, but that will only get me around 50HP each.
Replace with M65's - the mountings look very similar so hopefully it will not be much of a problem.
Go for a lighter, newer car / van type engine in the form of the Peugeot XUD 1.9 (non-turbo) - but worried about marinisation parts cost.
I would go for the latter if i could get the required parts cheap.
What are your thoughts????
 
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