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Old 21 July 2013, 16:20   #1
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Country: UK - England
Town: romford
Boat name: maverick
Make: regal 2150 lsc
Length: 6m +
Engine: inboard diesel
Join Date: Apr 2009
Posts: 16
vacume gauge

Hi all some time ago i fitted a vacume gauge to my boat fitted with a 1.7dti turbo diesel .The pipe came off the other day so i refitted it and now seem to be getting some big readings. There was something on here a while ago but cant find it. Does anyone know what it should read ' i thought it was 18 psi but ot sure at what rev range im getting that at about 3000 revs but when i open it up to 4400 i get nearly 30psi .Any help would be great. Its ten years old now so dont want to blow the turbo or engine up still seems fine.
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Old 24 July 2013, 07:38   #2
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Country: UK - England
Town: Christchurch
Boat name: Grumpy
Make: Parker
Length: 6m +
Engine: Diesel
Join Date: Apr 2010
Posts: 3
vacume / boost gauge

The gauge has done its job and saved you the turbo, the turbo waste gate is stuck/seized closed, the gauge is showing you over boost at 30psi, don't push it, get the waste gate refurbished and whilst you at it a turbo overhauled.
Turbo- Watching is critical to engine life. Avoid situations when your exhaust temp exceeds 1000 degrees. Boost should top out at around 19 psi max as the waste gate opens to prevent higher pressures. Cruising at 33-3400 RPM, you will see about 14-15 psi boost and 750 exhaust temperature.
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Old 24 July 2013, 16:32   #3
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Country: UK - England
Town: southampton
Boat name: hydradrive
Make: yamaha
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Engine: sterndrives
Join Date: Sep 2012
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1+ turbo watergate
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Old 28 July 2013, 16:33   #4
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Country: UK - England
Town: romford
Boat name: maverick
Make: regal 2150 lsc
Length: 6m +
Engine: inboard diesel
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thanks chaps.
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