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Author Topic:   Oil injection tank on Montauk

stagalv posted 01-07-2001 10:26 PM ET (US)
There is no great place to put the external oil injection tank when installing on a Montauk. I really dont want it exposed back aft. I guess I will run long lines and place it under the console. The dealer says this isn't a problem. Any of you guys have suggestions for this? Rex
triblet posted 01-07-2001 10:51 PM ET (US)
My '97 Montauk came this way. The tank
is 2 gal, mounted in the port forward
corner of the console, with the long axis
of the tank awthartships.
Mine sits on the console floor, but I've
considered cutting a hole in the floor so
the tank sits on the deck (in some sort of
tray so spillage stays put) so as to get a
little more console space.
BEFORE you mount
things, see what it will be like to add oil
to the tank. It's a messy job. Try both
gallon and quart containers.
You'll need to put a primer bulb in the line
at the console. Fiddle with the hose lengths
so that bulb tucks out of the way when not
in use.

Run the hose through the floor close to the
tank. Mine came with the hose going way over
into the middle of the biggest piece of
empty floor (DUMB). I relocated it.
Before you first fire it up, you gotta get
ALL the air out of the line. I'd put the
bow all the way down, and pump a couple of
quarts through the line (you can always pour
them back in). Then there's a process for
priming the system in the motor.
Sound like too much work? Another advantage
of a four stroke. ;-)
Chuck
lhg posted 01-08-2001 01:15 AM ET (US)
You must be referring to an OMC engine. You might want to reconsider this for several reasons these days. Any HP Merc or Yamaha 2-stroke engine for a Montauk will have an integral oil tank in the engine, a far superior situation with a Montauk. I'd buy one of those for that reason alone. Or consider the 4 strokes.
triblet posted 01-08-2001 09:51 AM ET (US)
How big are those integral oil tanks?
stagalv posted 01-08-2001 09:53 AM ET (US)
Too late, already got the OMC. Plus I understand that only the 90 Yamaha has the internal oil tank. Does the 115 have it also? Rex
lhg posted 01-08-2001 05:53 PM ET (US)
Chuck: I think the tanks on the Yamahas (up to 90 HP models) and the Mercs (up to the 125HP models) are about 1.8 to 2.0 gallons.
The Mercs have a clear see-through gauge on the front of the engine showing actual oil level. They all have a big twist-off cap on the top of the engine cowling for filling. The motor cover does not have to be lifted off. Maybe someone who has one of these can be more exact. I know Jimh's twin Yam 70's have these integral tanks. With Mercs, you don't get a detached oil tank until you reach the 135HP V-6 engine size. But I think the Yamaha v-4's (115 & 130) also use the remote tanks.
OMC really "missed the boat" on this idea as far as I can tell. Even if long range oil capacity is needed, it's much easier to stow a gallon of oil than to permanently mount the big 3 1/2 gallon oil tanks. They are a particular problem for any of the Classic Whalers up through the 22' Outrages, unless you have the full transom models. Basically all of these boats were designed before the days of oil injection with no place to hide the oil tanks except consoles. Single engine rigged Outrage/Revenge 18-22's all have this problem, since most use V-6's and the splash wells are only designed for battery boxes.

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Author	Topic: Oil injection tank on Montauk
stagalv	posted 01-07-2001 10:26 PM ET (US) There is no great place to put the external oil injection tank when installing on a Montauk. I really dont want it exposed back aft. I guess I will run long lines and place it under the console. The dealer says this isn't a problem. Any of you guys have suggestions for this? Rex
triblet	posted 01-07-2001 10:51 PM ET (US) My '97 Montauk came this way. The tank is 2 gal, mounted in the port forward corner of the console, with the long axis of the tank awthartships. Mine sits on the console floor, but I've considered cutting a hole in the floor so the tank sits on the deck (in some sort of tray so spillage stays put) so as to get a little more console space. BEFORE you mount things, see what it will be like to add oil to the tank. It's a messy job. Try both gallon and quart containers. You'll need to put a primer bulb in the line at the console. Fiddle with the hose lengths so that bulb tucks out of the way when not in use. Run the hose through the floor close to the tank. Mine came with the hose going way over into the middle of the biggest piece of empty floor (DUMB). I relocated it. Before you first fire it up, you gotta get ALL the air out of the line. I'd put the bow all the way down, and pump a couple of quarts through the line (you can always pour them back in). Then there's a process for priming the system in the motor. Sound like too much work? Another advantage of a four stroke. ;-) Chuck
lhg	posted 01-08-2001 01:15 AM ET (US) You must be referring to an OMC engine. You might want to reconsider this for several reasons these days. Any HP Merc or Yamaha 2-stroke engine for a Montauk will have an integral oil tank in the engine, a far superior situation with a Montauk. I'd buy one of those for that reason alone. Or consider the 4 strokes.
triblet	posted 01-08-2001 09:51 AM ET (US) How big are those integral oil tanks?
stagalv	posted 01-08-2001 09:53 AM ET (US) Too late, already got the OMC. Plus I understand that only the 90 Yamaha has the internal oil tank. Does the 115 have it also? Rex
lhg	posted 01-08-2001 05:53 PM ET (US) Chuck: I think the tanks on the Yamahas (up to 90 HP models) and the Mercs (up to the 125HP models) are about 1.8 to 2.0 gallons. The Mercs have a clear see-through gauge on the front of the engine showing actual oil level. They all have a big twist-off cap on the top of the engine cowling for filling. The motor cover does not have to be lifted off. Maybe someone who has one of these can be more exact. I know Jimh's twin Yam 70's have these integral tanks. With Mercs, you don't get a detached oil tank until you reach the 135HP V-6 engine size. But I think the Yamaha v-4's (115 & 130) also use the remote tanks. OMC really "missed the boat" on this idea as far as I can tell. Even if long range oil capacity is needed, it's much easier to stow a gallon of oil than to permanently mount the big 3 1/2 gallon oil tanks. They are a particular problem for any of the Classic Whalers up through the 22' Outrages, unless you have the full transom models. Basically all of these boats were designed before the days of oil injection with no place to hide the oil tanks except consoles. Single engine rigged Outrage/Revenge 18-22's all have this problem, since most use V-6's and the splash wells are only designed for battery boxes.