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Old 18 November 2008, 10:00   #21
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Ahhh, thats good to know and stay clear of!!
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Old 18 November 2008, 14:12   #22
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and stuff in a dishwasher to get clean
Pete is there any coincidence to you selling your Pac22 not that long after you got married and the above statement?
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Old 18 November 2008, 15:38   #23
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Screw the 6cyl yanmar
V8 Tigershark diesel 400HP - 948lbs torque
http://allmarinediesel.com/Tigershark%20Page.htm
Graeme


thats a girls engine
I meant a 7.1 yanmar 500hp 1100lbsft
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Old 22 November 2008, 11:16   #24
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I think we may have it sussed,
Took old exhaust hose off and found that the rubber had delaminated with the inner part dropping down and blocking the exhaust about half way along, We are 99% certain (fingers crossed) that this is the problem with regards slow turbo spool and low boost pressure but unfortunately we have not received our new hose yet so couldnt take her for a run

Graeme
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Old 22 November 2008, 12:01   #25
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Thats good, with the bit of extra fuel you have given it it should be quite sprightly for a pac.
If there is too much smoke you may need to shut the rack stop down a bit!
let us know whan you try it.
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Old 22 November 2008, 14:35   #26
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Hope to get the new hose for the exhaust and fit within the next few days at least that should be another one of the gremlins put to rest and the performance should be restored
Fingers crossed
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Old 28 November 2008, 16:44   #27
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Its Alive!!!!

Well it seams the exhaust was to blame after all





thank fook for that

It sat at about 27 - 29kts without a problem, fastest we saw was 30.5 but we had a wee bit of tide helping us
She sat at 2800 rpm and pulled a bar of boost, oil pressure approx 5.5 bar, temp never got above 80*C

Graeme
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Old 28 November 2008, 17:31   #28
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Still tinkering could give it a bit more fuel ????? mm prop=savage+idle at700 rpm=4kts ish
Any ideas would be gratefull
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Old 29 November 2008, 08:20   #29
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Still tinkering could give it a bit more fuel ????? mm prop=savage+idle at700 rpm=4kts ish Any ideas would be gratefull
You are getting full revs to achieve that speed so next step would be to change the prop for a larger one or having an existing one modified with an extra inch of pitch which O/S had. Standard is 21" so you should be able to go to 22" by having one of the prop people change it. Dia should remain at 16.75"

Pete
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Old 29 November 2008, 15:56   #30
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Its unfortunate that you will have lost the original settings by adjusting the fuel screw. Atleast it appears that it wasnt set up correctly in the first place. I have a p22 with a turbo 4 in that was 145hp as standard. I have a 103 / 113 bottom end on the leg fitted and a 19" x 20" prop. We simply opened up the fuel screw and up she went. Getting 30+ knots but I dont like doing it with a heavy boat. Engine will be giving out 200+ HP.

Temp sitting around 85 degrees C.

I would be interested to do this on a dyno and see what the engine is really pushing out !

I got alot of help from Neville through in edinburgh who lent me some props & sternpower stuff of his rental P22's. Hes worth a try if you are ever stuck.

Good luck ! JC
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