Moroso Coolant Tank Design Question

[kray]

The large hose connects to the bottom of the tank. The smaller hose that lays across the radiator connects to the upper front. The rear connection is for the overflow that routes to the ground. My Mishimoto tank came with a pre bent hose that routed straight down the back of the tank. Route the hose away from moving parts. A lot of times you will get a piece of wire from the wire feed welding process inside the tank. You should be able to,shake it out. I had a piece of wire in a Roush muffler that took me about an hour to finally shake out.

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[Silver6Speed]

Can't answer your question specifically, but I can speak to my experience. This was my first mod other than 11hp's worth of Plasti-Dip.

I haven't had any temp issues or any noticeable changes in my temp gauge reading. The tank does get hotter than the plastic tank though.

It looks awesome!

Wish it had the glass tube level indicator like the Mishimoto tank, but 'Moroso' looks more at home brand-wise paired with my Coyote than the mentioned alternative. If I had an EB S550, I'd strongly consider differently.

With nominal lighting, the coolant level is still easily discernible.

I wouldn't change it, unless it proved harmful (your concerns are worth exploring).

Hope this is of some value in your decision.

 

[GT Pony]

The large hose connects to the bottom of the tank. The smaller hose that lays across the radiator connects to the upper front. The rear connection is for the overflow that routes to the ground. My Mishimoto tank came with a pre bent hose that routed straight down the back of the tank. Route the hose away from moving parts.

The Moroso doesn't have the hose nipple on the back of the filler neck like the Mishimoto for the over-flow, but rather a vent hole built in to the bottom of the tank, which basically functions like the OEM tank. The pressure cap controls venting, and there is a vent hole in the filler neck itself, just like the OEM tank. Same goes for the Mishimoto, except they have incorporated a separate hose nipple for a vent hose as you've described.

As I've shown in the cut open photo of the Mishimoto tank, there is a tube inside the tank that is connected to the rear nipple on the tank (top corner, not the filler neck) that turn 90 degrees inside the tank and goes down towards the bottom of the tank. The Moroso does not have that inside tube. That's my concern because even the OEM tank has this tube inside the tank.

 

[GT Pony]

Made contact with Moroso's Tech Dept about the concern of no internal tube on the rear/top port. They are going to look a their blue prints to see what the design shows and get back with me soon. Will let you guys know what they say.

 

[kray]

Yes, please let us know what they say. I am very curious now.

 

[dbasql]

Hah
I have this sitting in my garage in the 'to be installed' bin.
Subed....thanks as usual GTP

 

[GT Pony]

I heard back from Moroso today about my inquiry on the internal tube that seems to be missing in the Moroso tank design. This was their replay:

"Our tank does have an internal tube, similar to the other aftermarket tank you show, but routed from the filler neck assembly straight to the bottom of the tank for venting air from the system."

The problem is, that is not the internal tube I'm asking them about. Both the OEM and Mishimoto tanks also have the vent built into the filler neck. So it seems they don't quite understand what's going on here and what my concern is with the missing internal tube. :doh:

I shot them another email back trying to clarify that the internal tube I'm talking about is an extension of the hose nipple located on the rear corner of the tank - the nipple I point to with the red arrow in post #1. I had sent 3 photos with my initial inquiry to clearly explain the internal tube I'm talking about.

I keep pointing out that the OEM tank has this internal tube connected to the rear nipple that is submerged in coolant to ensure no air gets in the hose that runs from that rear nipple to the engine. I guess I don't understand why they wouldn't fully replicate the functionality of the OEM tank.

Is it something that might cause a problem? ... I don't really know at this point. But I would feel better if the tank had the same setup as the OEM tank.

 

[ero 5.0]

im surprised more people havent chimed in on this...

 

[Roh92cp]

This is bizarre that ones with the tank haven't reported problems, I imagine higher coolant temps due to air introduced into the system.

Frustration trying to get technical information across over the Internet. Where is the inlet or tube form the filler neck that they talk about. I didn't see it in your pics.

 

[GT Pony]

This is bizarre that ones with the tank haven't reported problems, I imagine higher coolant temps due to air introduced into the system.

Frustration trying to get technical information across over the Internet. Where is the inlet or tube form the filler neck that they talk about. I didn't see it in your pics.

Maybe their design doesn't create any cooling system issues, but it does seem to have the possibility to introduce air into the system. It doesn't make sense to not put the submerged tube into the design. The OEM tank obviously has it designed that way for a reason.

The vent tube that Moroso was talking about is an internal tube that runs from the hole in the filler neck to the bottom of the tank. Anyone with the Moroso tank can see that tube by looking straight down into the filler neck hole. So if the pressure cap vents, the pressure/coolant would puke out the hole in the filler neck and then travel through the tube and out the bottom of the tank. That tube is entirely different than the missing tube from the hose nipple I'm concerned about.

 

[kray]

Give the guys at LMR a call. At least you can talk with a live person and maybe they have been asked these questions. If people have been experiencing problems with the tank they would surely know about it. Can you possibly return it and do the Mishimoto tank? I absolutely love the design of that one mostly due to the sight window and the fact that they send a pre bent hose directing overflow to the ground as part of the kit.

 

[kray]

Not sure if this is helpful or not. I went back into some old online comments from mustang forums that talked about coolant recovery tanks. There were comments made about just what you are talking about on older Moroso tanks. In a nutshell, I read that if the coolant tank is the highest point in the cooling system the design that Moroso uses will not cause problems with air getting into the system and thus overheating. Correct me if I am wrong but the location of the tank on the S550 looks to be the highest point in the cooling system which means you should be just fine with the tanks as designed. Just my 2 cents.

 

[GT Pony]

Not sure if this is helpful or not. I went back into some old online comments from mustang forums that talked about coolant recovery tanks. There were comments made about just what you are talking about on older Moroso tanks. In a nutshell, I read that if the coolant tank is the highest point in the cooling system the design that Moroso uses will not cause problems with air getting into the system and thus overheating. Correct me if I am wrong but the location of the tank on the S550 looks to be the highest point in the cooling system which means you should be just fine with the tanks as designed. Just my 2 cents.

Thanks for your comments on what you found being said about the older Moroso tanks on older Mustangs. The coolant tank probably is the highest point in the cooling system, but I guess I keep going back to the fact that the OEM tank has this internal tube for the rear hose that is always submerged in coolant, so there must be a design reason behind it. And Mishimoto has replicated the submerged tube, so they seem to think it's important part of the cooling system functionality.

Does anyone reading this have their cover removed from the intake manifold so they can see where the hose that connects to the rear of the tank goes? I'm assuming it connects to one of the heads, or to the rear of the engine block (?). I'm thinking that hose is to bleed air out of the high points of the cooling system inside the engine block/heads and into the tank. But if that hose end is never submerged in coolant (because the internal tube is missing), then it might be possible that air gets drawn back into the cooling system every time the engine cools back down. Even so, it may just bleed the air back out into the tank during the next hot cycle and not cause any real problem.

Moroso does have a Tech Dept and I have spoke to them to let them know the concern. I then emailed them with photos similar to what I've posted here, and then they replied as I showed in post #22. I'm not so sure they are fully understanding what I'm trying to convey to them yet. I plan on calling them on Monday.

 

[Voodooo]

Maybe someone needs to buy a Moroso tank and cut it open

 

[GT Pony]

Maybe someone needs to buy a Moroso tank and cut it open

I know exactly how the Moroso tank is built by looking down inside the filler neck with an inspection mirror. the two small hose nipples on the top front and rear just vent directly into the tank. But the top rear nipple on the OEM tank (and the Mishimoto tank) has a internal tube that goes down towards the bottom of the tank so it's always submerged in coolant. It's explained in post #1, 4 & 5.

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