Exhaust tuner cooler?

[Coryc]

Quick question, I have a 2.4 200 with a 260 style cowling. I always ran a T fitting out my dump hose that runs to the exhaust tuner cooler. Well I got a Skirt for my cowling and the T wouldn't fit so I just took it out. Is it bad to run these motors without cooling the exhaust tuner?

[transomstand]

Having never done this myself it's hard to say. That fitting feeds all the cooling water to the lower half of the exhaust plate. I think I'd be more concerned about melting the water pump than the tuner. We've seen tuners fall right off of engines and the person wasn't even aware of it (except for the strange rattling noise), the engine ran virtually the same.

[Coryc]

Well that settles it. It's going back on haha. I assume that all the 150,200,225 promax motors run the two piece plate which has this hose to the exhaust tuner. And a lot of them ran 260 cowlings and skirts. How did they hook up that hose?

[transomstand]

Well you stumped me again:D

I run a Promax cowl but have never used a skirt. The exhaust plate on the Promax may have a different entry point for the fitting on the exhaust plate. Now I'm gonna have to go look. Geez, all this cooling stuff is putting me seriously behind in making wife porn with Photoshop:leaving:

[Coryc]

Hahahahaha I'm sorry!! But thankyou for all your responses, I really appreciate it.

[Dave Strong]

Well that settles it. It's going back on haha. I assume that all the 150,200,225 promax motors run the two piece plate which has this hose to the exhaust tuner. And a lot of them ran 260 cowlings and skirts. How did they hook up that hose?

Pro Max skirt is different than a 260 skirt.

Dave

[Coryc]

Oh really?! I did not think they were different other than the promax skirt has that circular hole in the back of the skirt. How else are they different?

[tux974]

Skirts are the same with older and alien cowls.
They will have different part #'s due to hole on early and notch on alien.
The diffence with early is the round hole for relief adapter.
The alien has the rectangular cut out on the bottom port side lip for the relief adapter which is different from the pre alien cowl motors.
No reason why that hose should not hook up to that barb on the lower 1/2 of the plate. You can turn that fitting to best accommodate the hose routing.
IMPO, Run the water system with the 2pc the way Mercury designed it! There was a reason why it was designed that way!

[Coryc]

I do run the system with the 2 piece adapter. My only question was on the adapter plate that bolts to the midsection on the port side there is a little fitting where a little hose can go to. Most people run a T fitting from their dump hose out the bottom of the pan to this. I can no longer do that since I have a skirt on my motor and the T won't fit.

[tux974]

Is the fitting on port side near center or port side rear?
If you are running a 2.4 2pc plate then the skirt will not work with fitting in center. I thought you were running a 2.4 200 on a 2.5 plate.
The Promax plate has it on the port side rear that is why they came with the skirt.
It probably is not a 2.5 Promax plate and yes if it is on the side the skirt will not work because that plate is for a different cowl setup or use the light weight cowl setup but no skirt unless you get creative!
Here is a 2.5 Promax 2pc plate notice fitting location.
382084

[tux974]

Post a picture. Saves the guess work of what you have or trying to do!

[transomstand]

He's got the same setup as I do with a 2.4 plate and the fitting on the port side. I was pretty sure the Promax fitting was in the back but didn't want to post without being certain (because the bunny yells at me).

[tux974]

He's got the same setup as I do with a 2.4 plate and the fitting on the port side. I was pretty sure the Promax fitting was in the back but didn't want to post without being certain (because the bunny yells at me).

:D Yes, the Promax plate has it at the rear (pic above).
But with a little ingenuity I'm sure it can be made to work...;):D

[transomstand]

:D Yes, the Promax plate has it at the rear (pic above).
But with a little ingenuity I'm sure it can be made to work...;):D

Should be a BUNCH easier than putting a steel motor on a 1 pc plate and getting it to act exactly like a 2 pc:eek:

[bigboy]

Should be a BUNCH easier than putting a steel motor on a 1 pc plate and getting it to act exactly like a 2 pc:eek:

It sure is!

[bigboy]

I ran mine both with plumbing to fitting and also with the fitting blocked. No real difference I could tell. I think at the end it was spilling more water with the hose plumbed to the fitting in my case.

Engine is a 2.5 200.

Now switched to 1 piece plate. It makes me sleep better.

[Coryc]

Tux, yes that's it! The copper or brass colored nipple in the back of the adapter right next to one of the mounting bolts! Mine is just further on the side of the plate

[Coryc]

And sorry for not posting pictures, my boat is kept in a
garage an hour from my house so not easily accessible

[Dave Strong]

I ran mine both with plumbing to fitting and also with the fitting blocked. No real difference I could tell. I think at the end it was spilling more water with the hose plumbed to the fitting in my case.

Engine is a 2.5 200.

Now switched to 1 piece plate. It makes me sleep better.

That is not done so much as to cool the tuner but ballance that cooling system. Many change the cooling and have no issues. The Engineers spent a lot of time getting things just right so why change it?

Dave

[Coryc]

Not the best pic but it's all I got: the hose going to the adapter plate is what I am talking about its on the left hand side of the pic. 382118

[Dave Strong]

Should be able to deal with that, the tee is normally above the pan. Suspect you are trying to get to much plumbing under the skirt.

Dave

[Coryc]

Gotcha, I'm gonna put the T above the pan and just run the hose under the skirt. Should work like that

[Dave Strong]

Gotcha, I'm gonna put the T above the pan and just run the hose under the skirt. Should work like that

If you need it will post a pic but stock that tee is between the port head and the divider inside the cowl.

Dave

[Coryc]

Great, thanks so much for all your help man.

[tux974]

If you need it will post a pic but stock that tee is between the port head and the divider inside the cowl.

Dave

Exactly and the cross over is above the lower coils!
382130

[tux974]

Tux, yes that's it! The copper or brass colored nipple in the back of the adapter right next to one of the mounting bolts! Mine is just further on the side of the plate

Make sure the fitting setup coming off the plate looks like the setup in my picture or it will be in the way. There is a reason why it was setup that way.

[bigboy]

That is not done so much as to cool the tuner but ballance that cooling system. Many change the cooling and have no issues. The Engineers spent a lot of time getting things just right so why change it?

Dave

You are right. I got the adapter plugged at the rear. Just ran it like that. Later I installed fitting and plumbed like factory. No noticable difference. I preferred the plug. No hassle with plumbing for cowl and skirt. Also 1 hose for each stat. Easier to spot problem with a stat.