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Author Topic:   Tempo tank for 2005 170 Montauk
pvonk posted 03-09-2005 09:27 PM ET (US)   Profile for pvonk   Send Email to pvonk  
There have been discussions about tempo tanks and older Montauks and 170 Montauks in the Repairs/Mods group. One post refers to Bass Pro item:
Ultra PBW13 (Model B) as: 20 3/8(L) x 14 1/4(W) x 13 3/4(H)
in response to someone's query concerning a 2000 Montauk.

Will this model of tempo fit a 170 (2005) Montauk? I have to ask because my boat is stored several states away from home and I can't do a measurement until June. I'd like to buy two 12 gal tempos to replace the original tanks (putting them under the pilot seat, without having to raise the seat or any other surgery). The plan is to buy them before I travel to the boat.

I've seen the pilot seats on older Montauks, and many people have raised the seats to allow for larger tanks. It appears that these older seats are fairly easy to raise, but the new Montauks have a molded lower unit under the seat, and I'm not sure if they can easily be raised, or that I'd want to. So.. I'd really like to know if the 12 gal. tempo with the newer low profile cap will fit under the seat of a 2005 Montauk, as is.

Also, can I use the fittings on the original tanks on the new tempos to connect the fuel line (I have the original 4stk Merc)? Or must I buy new fittings? I ask because last summer I looked at some tank at a marina and the fitting (that the fuel line snaps into) was totally different than what I have. So I figured the type of fitting may be dependent on the engine model. Someone has suggested that I can order the right fitting from Bass Pro (or wherever) when I order the tank. But if I plan to replace the old, original tanks, I guess I can use the fittings (assuming they are removeable - remember, I can't check all this since my boat is out of reach - so to speak).

Any input will be appreciated. I'm just trying to plan ahead. Thanks.

- Pierre

Maximus posted 03-09-2005 10:08 PM ET (US)     Profile for Maximus  Send Email to Maximus     
$39.99 at Bass Pro?

They fit nicely when full, empty you have to fight with them to get them out. You will need new fittings as the Quicksilver fittings are integral with the six gallon tanks. You will also need to remove and replace the chrome hold downs (just the outer two). Don't forget longer nylon hold downs.

Caps from HomeDepot also! The stock Tempo caps are about four inches tall. Use search for more details.

johnr posted 03-09-2005 10:21 PM ET (US)     Profile for johnr  Send Email to johnr     
If I were you I would go for the Pate Tank. It is much more durable, it matches the boat with the color white , and it is made of fiberglass. It is worth the little extra money. Also the hardware in which it comes with is much better quality.
pvonk posted 03-10-2005 07:30 AM ET (US)     Profile for pvonk  Send Email to pvonk     
I've considered the Pate tank, but prefer mobile tanks.
pvonk posted 03-10-2005 07:34 AM ET (US)     Profile for pvonk  Send Email to pvonk     
Come to think of it... it doesn't appear as through the tempo model I mention has a handle, right? Guess it isn't as mobile as I'd like. ??
bigjohn1 posted 03-10-2005 07:54 AM ET (US)     Profile for bigjohn1  Send Email to bigjohn1     

No, those tanks you speak of do not have traditional molded-in handles like Quicksilver tanks but they do have hand-hold cut outs at the bottom of the tank on both sides....look closely at the diagrams of them on the Bass Pro site and you'll see what I mean.

To the question of their portability, that's a relative question and it really depends on your strength level and if you have a bad back. If you're a beefy strong guy with a good back, just use good posture when lifting them and you'll be ok. If you're not (or have back problems), plan on leaving these tanks in the boat once installed and filling your boat at the gas station.

Lots of guys love their Pate fiberglass tanks and they sure are good but damn, that is alot of money for a gas tank. Of course, if money is no object, go for the Pate.

Maximus posted 03-10-2005 08:21 AM ET (US)     Profile for Maximus  Send Email to Maximus     
There is a benefit to having two independent sources of fuel on board.

I typically will run off of one tank and use the other as a spare. They do not get filled at the same time and at the same place. This eliminates most of the possibility of being stuck with bad gas. If you burn more than 12 gallons, in one day you are doing a lot of boating.

These tanks are not portable when full. BTW, they only hold 12 gallons, not the advertised 13.

I considered both the Pate tank and the Tempos and for the money and the added benefit of two fuel sources I chose the Tempos and have been very happy.

Fuel burn with the 4stroke is in the 4.25 mpg range.

Pate tanks run ~$400+, the two Tempos, fittings, straps, and caps can be had for ~$100.

johnr posted 03-10-2005 09:03 PM ET (US)     Profile for johnr  Send Email to johnr     
I failed to mention that you also need to put a gas filter in also which is about $60.00 with the pate or the tempo 24 gallon tank.
pvonk posted 03-10-2005 10:48 PM ET (US)     Profile for pvonk  Send Email to pvonk     
Tell me more about the gas filter.

I seem to recall one or more threads about these in the past - my recollection is that it seemed a personal opinion. Some thought it was important, others felt it was a non-issue. Why a filter on these tanks and not on the two-tank 13 gal. factory issue gas tanks?

bigjohn1 posted 03-10-2005 11:03 PM ET (US)     Profile for bigjohn1  Send Email to bigjohn1     
My sentiments exactly...I see no impelling reason to add a filter just because you switch to the larger Tempo tanks (or Pate for that matter). It is fairly cheap added insurance though and wouldn't hurt. As long as I check the filter under the cowling every few weeks (115efi motor) for water and dirt, I feel relatively safe...that procedure worked fine for me on my last motor as well.
johnr posted 03-12-2005 07:09 AM ET (US)     Profile for johnr  Send Email to johnr     
If you put any size tank in a boat codinsation gets in and that is why you need a gas filter. Unless you use the boat alot it is needed. I see many gas tanks emptied because of this.
bigjohn1 posted 03-12-2005 08:03 PM ET (US)     Profile for bigjohn1  Send Email to bigjohn1     
johnr, we may be saying two different things...I agree with you on an outboard engine needing a fuel filter but in the case where your outboard already has one under the cowel, isn't this sufficient? My 115efi has a small filter with a red float inside to indicate the presence of water in the system. Why would one need an ADDITIONAL fuel filter if their engine already has one?
AQUANUT posted 03-12-2005 10:17 PM ET (US)     Profile for AQUANUT  Send Email to AQUANUT     

Hey bud,...hows guam?.....anyway..the filter under the cowling that has the floating ring it....well what if you got water in your takes just a very small amount to render that factory inline filter inoperable,,, so your 20 miles off shore,,,,hitting the lower part of your tank..and find the water....if the factory filter replace it and throw it away....if you carry a replacement

the volume in the water/fuel separating filter
[example: racor] is much greater...and you can empty it into a proper stowage vessel....til you return to port....

pull the filter off..empty it..put it back on and head for home....

justa thot...

bigjohn1 posted 03-14-2005 12:11 AM ET (US)     Profile for bigjohn1  Send Email to bigjohn1     
I hear you Terry and see your point, I guess its better safe than sorry come to think of it - especially when off-shore:-)
pvonk posted 03-14-2005 07:31 AM ET (US)     Profile for pvonk  Send Email to pvonk     
Well, let me ask you this...

Is a filter needed with the stock twin 6 gal tanks on the Montauk? I'm guessing that the recommendation for a filter with a Pate or twin 12 gal tanks has to do with condensation in a larger tank. If correct, is one needed with the 6 gal tanks?

- Pierre

AQUANUT posted 03-14-2005 10:04 AM ET (US)     Profile for AQUANUT  Send Email to AQUANUT     
Once after crabbing for dungeoness crab on the oregon coast,
a few evasive crabs crawled up under my leaning post..covered in sea weed...they made a mess...when the boat was hauled out...I was the brush wife the hoseperson.....during the rinse...she sprayed water on the 6 gallon tank....the vent was open...the tank was empty..and water got in that case yes...a water sep would have been case I had not caught it.
water is really bad for an EFI engine...can cause more costly repair that an carbed motor
johnr posted 03-14-2005 06:29 PM ET (US)     Profile for johnr  Send Email to johnr     
I would put a filter on any tank now adays because you could buy gas with water in it anywhere. You never know. Plus if the boat sits it gets condinsation. One thing that helps id keeping your tanks full when you are not using the boat.
pvonk posted 03-14-2005 08:20 PM ET (US)     Profile for pvonk  Send Email to pvonk     
Call me a babe-in-the-woods: My Montauk is only a 7 months old (been stored in a garage the past 5 months) and it's my first boat. These filters @ $60 - where do I install them? I have a fuel line coming up under the pilot seat which attaches to the 6 gal tanks. Is this something that goes between the fuel line and the tank? Is there an issue with the type of fitting used to connnect fuel line to tank? Or does the filter connect near the engine? Is this a simple add-on or do I need to perform an operation?

- Pierre

johnr posted 03-16-2005 06:13 AM ET (US)     Profile for johnr  Send Email to johnr     
I would try and put the fual filter under where the tanks are stalled. This way they are out of the way and out of the sun. There is a new stainless one out and that is what I would use with a mercury filter. Also is would not hurt to use Quick Clean in your gas. After you install it make sure you prime the filter by filling it with gas before you insert it. Also put a little grease on the O-Ring before you spin the filter on.
Knot at Work posted 03-16-2005 09:31 AM ET (US)     Profile for Knot at Work  Send Email to Knot at Work     
pvonk, a fuel filter on your portable 6.6 gal tanks is a waste of money. I have a 2003 170 and have never had any issue with water in the tank or condensation or other B.S.

Enjoy it and DONT WORRY

AQUANUT posted 03-16-2005 10:01 AM ET (US)     Profile for AQUANUT  Send Email to AQUANUT     
not trying to be a doomsayer,
However, there are two motors sitting in my bay currently
both died due to water ingestion,
both were used as trade ins, on new motors
1 is a 120 sportjet [mercury] due to gasket deterioation,
water intruded in to cylinder and destroyed piston and rings
2. an 225 EFI, water somehow got into the 3 gal oil tank,
thus ingestion failure.

my point is...water in cylinders kills engines.
how careful can one be? you decide, it only money, right?


LHG posted 03-18-2005 03:34 PM ET (US)     Profile for LHG    
I thought Boston Whaler knew what they were doing when they sell you a completely rigged Boston Whaler with a Merc. The fact of the matter is, they DO, and they don't install a water separating filter on boats with above deck tanks. It's not a matter of "cheaping out", rather, they're simply not needed.

Now if you buy a Whaler with a built-in aluminum tank, you DO get a water separating filter. It's the foamed in aluminum tanks, below deck, with 5/8" tubing open venting, that remain cold and accumulate condensation when the weather quickly turns moist, slowly dripping water into the fuel, hence the filter. That's also why you fill the belly tank to the brim before winter storage instead of draining it dry. With no air space in the tank, no moisture laden air can enter and condense on the still cold tank surfaces. In an empty tank, it can.

You can overkill the daylights out of a Montauk Classic or 170 fuel system, but you don't NEED a water separating fuel filter. I ran a Nauset with twin 12 gallon red Tempo plastic tanks for 16 years, and never had a water problem.
Nor do I with my current 1971 Outrage, also with twin 20 gallon Moeller plastic tanks on deck, and no water sep filter.

AQUANUT posted 03-20-2005 06:54 AM ET (US)     Profile for AQUANUT  Send Email to AQUANUT     

my respected fellow seadog,
You sir are very fortunate, and obviously quite seasoned.
your luck is not of chance but perhaps from experience.

I had a souped up Porsche in the 90's....a street legal racing porsche...fuel injected 6 cylinder...titledas a 1970 911s.. anyhow...back in belts were not stock equipment in a 911s...therefore not required by any state it is in my brother 1932 and 1934 ford vickies....However, not required...I installed them anyway.
With 22 gals of fuel 10 inches from my body..they too were possibly 150mph..none-the-less, The one in a millionth time they may save you hind end...they would have been worth it.haha

one sea dog to another

sweetdreams posted 03-24-2005 10:54 PM ET (US)     Profile for sweetdreams  Send Email to sweetdreams     
I have a 2003 montauk with a 28 gallon tempo tank installed for almost two years. It fits perfectly under the seat. I hinged the reverse pilot seat to allow access for filling the tank. I use the boat alot, this is the first I have heard of needing a fuel filter. Never had a problem. I decided on the tempo tank because it was available immediately at west marine and it only cost about 100.00$. With pate there was ordering and waiting for delivery and I wanted a real fuel tank yesterday. No problems and It matches the red biminy top and forward shelter. I believe the saying goes "wimpy, wimpy, wimpy" with reguards to the stock fuel tanks. It is really a joke to supply that amount of fuel with a boat such as this. Totally love my boat. Wish they made one 21 feet just scaled up.
ero posted 04-12-2005 02:12 PM ET (US)     Profile for ero  Send Email to ero     
Tempo makes a nice 27 gal tank fits under the console seatof a 2004 170. I truly forgot what I paid for it.
johnr posted 04-12-2005 06:07 PM ET (US)     Profile for johnr  Send Email to johnr     
Go with a pate. It is much better quality and it will last much longer. Make sure though you put a filter in also no matter what tank you decide on.
1stwhaler posted 04-12-2005 07:45 PM ET (US)     Profile for 1stwhaler  Send Email to 1stwhaler     
I went with the Pate tank on my 03 170 and after two and a half years (just when pate warranty ran out)the tank developed a crack on a seam leaking fuel all over the deck,save your money and go with the inexpensive tank.
SteveFC posted 04-13-2005 01:56 PM ET (US)     Profile for SteveFC  Send Email to SteveFC     
On issue has made me hesitate about installing any of these large tanks: how do you fill them? Am I correct in thinking that most people would not be able to reach the fill cap from outside the boat? Do you climb into the boat with gas pump hose in hand? Do you transfer gas from a portable can? Some other way?
bigjohn1 posted 04-13-2005 05:33 PM ET (US)     Profile for bigjohn1  Send Email to bigjohn1     
You get up inside the boat at the gas pump to fill these larger tanks.
SteveFC posted 04-15-2005 01:10 PM ET (US)     Profile for SteveFC  Send Email to SteveFC     
That sounds like risky business to me.
bigjohn1 posted 04-17-2005 08:37 AM ET (US)     Profile for bigjohn1  Send Email to bigjohn1     

Please expound on why you feel this is risky. If your concern is static potential when fueling a plastic and/or fiberglass tank onboard a boat, you can use a cheap rubber pad and sit your tanks on that while fueling. While static can be a problem in some areas, it is more pronounced in low humidity areas..luckily, I will never have that to worry about as we have tropical humidity where I live year-round.

SteveFC posted 04-19-2005 01:21 PM ET (US)     Profile for SteveFC  Send Email to SteveFC     
I normally refuel at a gas station, and the idea of climbing over the trailer into the boat with the fuel hose in hand doesn't give me a good feeling. Am I being excessively cautious?
bigjohn1 posted 04-19-2005 05:39 PM ET (US)     Profile for bigjohn1  Send Email to bigjohn1     
Steve, no - not necesarily but consider this. Just pull the boat up to the point where the tanks are in line with the pump. When you pull in, aim so the boat ends up being perhaps 2' away from the pump and the tanks are beside the pump. Climb up in the boat and reach for the pump from within the boat. It really isn't too hard but might be
affected by where the station places their pumps on the concrete "island". Give it a try, I don't think you'll find it unsafe or inconvenient once you get used to it.
Phil Tyson posted 04-20-2005 07:22 AM ET (US)     Profile for Phil Tyson  Send Email to Phil Tyson     
I fill up my Tempo 28 at a gas station all the time. No problems.

Just remember. Never leave the pump on auto fill and get back in the vehicle. Don't leave the pump. Even if it is -15.

Static electricity IS a hazard.

bigjohn1 posted 04-21-2005 01:22 AM ET (US)     Profile for bigjohn1  Send Email to bigjohn1     
Steve, I must admit Phil is dead-on in what he states. Still, it can be safely done if precautions are followed. You will find it very useful to do a web search using Boolean logic such as typing in -- static AND fuel tanks. There, you can read all about it from a variety of authoritative sources.
SteveFC posted 04-21-2005 01:35 PM ET (US)     Profile for SteveFC  Send Email to SteveFC     
John and Phil, thanks for the good advice. I've been reluctant to consider a large tank, but now you've got me thinking......
LHG posted 04-22-2005 05:19 PM ET (US)     Profile for LHG    
Up until about 1972, Boston Whaler never even made a boat that didn't have on-deck metal fuel tanks. The plastic tanks weren't even being used back then. There are millions of on-deck metal and now plastic tanks filled in boats, including Boston Whalers, at gas stations, every year, and have been over the last 50 years. No problem that I can see. At today's gas prices, gas station filling makes the most sense, and has the best fuel also because of constant turnover. Much more likely to get fuel and water problems from marina gas.

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