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Old 07 December 2007, 15:02   #1
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Country: Ireland
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Boat name: pacific 22
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Pac 22 re-engine

Just wondering if anyone one has some experience with engine upgrades for a Pacific 22. I'm looking at two engines at the moment, one being a 180hp@2800rpm Volvo D4 and the other is a 230hp@4300rpm Steyr. The leg is a Stern Powr 101 High Performance with a 1:1 ratio on the engine side and the top end of the leg has 1.32 reduction. The leg has a plate on it saying there was a 245 yanmar in it previously. Any suggestions?
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Old 07 December 2007, 16:22   #2
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Hi AJ
I have a Pac22 with Yanmar - non runner. I believe the Yanmar Pacifics return 30+ knots and overall is a great improvement on the Mermaids. If your Pacific is designed for Yanmar why not fit one.However if you decide to fit something else and dont require the leg let me know as that is what I require to get mine in the water. Cheers
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Old 08 December 2007, 09:31   #3
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Might be of interest

I was trawling through Google the other day and found this, might be of interest:

http://www.boatsandoutboards.co.uk/view/F166233

Its not bad.
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Old 08 December 2007, 09:41   #4
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Barrus do a package with all you need in it to re engine a pac22 with the Yanmar. All pretty easy.
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Old 08 December 2007, 09:47   #5
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Just checked the Sternpowr manual and the max torque is 350 lb-ft which at 2600 revs for a Mermaid engine equals about 175 hp. A number of P22s have run 200 hp without problems.

Mermaid are Steyr dealers too so might be worth a chat with them. Are you a member of the Mermaid Owners club? for 15 a year you get a number of offers and a diary each year but unlimited technical advice that is very useful, details on there website.

Why not put a Mermaid back in? at least you know it will fit and the exhuast is on the right side etc. A 200 hp Mermaid will give you 28 - 30 knots depending on load.

Pete
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Old 09 December 2007, 01:24   #6
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yamaha

i have a Yamaha diesel available, also i am after some pacific mermaid parts if you want to trade?
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Old 14 December 2007, 05:28   #7
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Why not give this guy a ring, very helpfull and has experience of Yanmar Pacifics


http://www.boatsandoutboards.co.uk/view/FOL076
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Old 16 December 2007, 17:34   #8
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i own a p22 that we had converted with a yamaha 275 hp 6 cylinder diesel. It runs a 1.32 : 1 sternpowr leg no problem, because we had increased the hp by so much we were able to keep the gear ratio and the prop the same. so we have gone from 27 knots at 2650 rpm to 36 ish knots at 3500 rpm.

to use a high revving engine of less than 240 hp will not work with the 1.32 : 1 leg. You will require a 1.66 : 1 and this is standard config for p22's that have the newer yanmars in. If your leg does say yanmar on the back, it is possible that it is in fact a 1.65 : 1 as most early ones were converted 1 32 :1 and were relabelled, or it may be that yours was a special.

out of interest we are putting in a yanmar 315 6 cylinder at the moment and I am hoping to use a 19 " prop on the same but deeper 113 leg.

I wonder if the boat will top 45 knots?

JC
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