Moroso Aluminum Expansion Tank

[Obioban]

I'm not concerned about the cost, rather one less thing to deal with during a race weekend. Call it fixed for life (ish).

Feff

I'm not on board with the opposite of good being better. The stock tank on our car is very reliable-- pretty much bulletproof if you replace it at 100,000 mile intervals, with the rest of the cooling system. The Moroso loses the coolant temp sensor, probably makes for less accurate coolant level setting, is heavier, unproven, more expensive, and heavier.

[Feffman]

If you're worried, buy a backup from FCP and carry it with you along with the other spare parts you have. It'll be cheaper to go that route.

I'm not concerned about the cost, rather one less thing to deal with during a race weekend. Call it fixed for life (ish).

Feff

[Obioban]

After have 2 explode in a 330i and 328xi I'm a little gun shy on believing the dumb ass Germans can do anything right in the cooling system.

Different cars that do, indeed, have failure prone tanks.

[hemi6]

Our expansion tanks are not prone to failure. If one fails, that doesn't make the failure the new rule.

After have 2 explode in a 330i and 328xi I'm a little gun shy on believing the dumb ass Germans can do anything right in the cooling system.

[Arith2]

This is a preventive measure. My car is towed to track events and races, often 8+ hours from home. Last thing I want is a popped coolant tank to keep me off track after towing 13 hours to COTA, 16 hours to VIR, 9 hours to Road Atlanta, etc.

Feff

If you're worried, buy a backup from FCP and carry it with you along with the other spare parts you have. It'll be cheaper to go that route.

[Feffman]

Our expansion tanks are not prone to failure. If one fails, that doesn't make the failure the new rule.

Literally no benefit. Not going to help with temps (unless it has a significantly bigger capacity) and a huge downgrade for not having a critical coolant level sensor (and it will be more uncomfortable should you touch it by mistake). Someone mentioned the metal will help it cool better (it won't) and contradicts people using metal heat shields for intakes vs plastic (I personally don't think it makes a lick of difference unless you have good airflow in which case, metal is better). Mine lasted 200k before it sprung a leak. It looks cool though, except for that stupid logo.

This is a preventive measure. My car is towed to track events and races, often 8+ hours from home. Last thing I want is a popped coolant tank to keep me off track after towing 13 hours to COTA, 16 hours to VIR, 9 hours to Road Atlanta, etc.

Feff

[Icecream]

I've seen 2 M3 coolant bottles split at the seams in the last month over here in the UK.

On the flip side, 89,998 didn't split their seams..

[Martyn]

I've seen 2 M3 coolant bottles split at the seams in the last month over here in the UK.

[Icecream]

Our expansion tanks are not prone to failure. If one fails, that doesn't make the failure the new rule.

Literally no benefit. Not going to help with temps (unless it has a significantly bigger capacity) and a huge downgrade for not having a critical coolant level sensor (and it will be more uncomfortable should you touch it by mistake). Someone mentioned the metal will help it cool better but unlikely unless you have good airflow in which case, metal is better. Mine lasted 200k before it sprung a leak. It looks cool though, except for that stupid logo.

[Arith2]

Our expansion tanks are not prone to failure. If one fails, that doesn't make the failure the new rule.

[Feffman]

It's not hitting Australia until mid-July and then needs to be shipped to me... If it fits in the same threads as the sight glass then i will start testing straight away and revert as i will just replace the sight glass with it short term... if not it will need to wait until I get a welder to come and weld up the roof bow for my CF roof install and weld up a new bracket for my Chase bays Windscreen Washer tank... either way i'll keep you guys posted

STAATS:

Why not fit the Moroso bung and sensor (https://www.moroso.com/catalog/produ...num-bung63950/) in the same underside position like the original tank?

Feff

[STAATS]

Looking forward to hearing back on this, STAATS!

It's not hitting Australia until mid-July and then needs to be shipped to me... If it fits in the same threads as the sight glass then i will start testing straight away and revert as i will just replace the sight glass with it short term... if not it will need to wait until I get a welder to come and weld up the roof bow for my CF roof install and weld up a new bracket for my Chase bays Windscreen Washer tank... either way i'll keep you guys posted

[nervous24]

Looking forward to hearing back on this, STAATS!

[hemi6]

I installed one a few weeks ago, no problems. Trying to eliminate any future cooling system failures, plastic bullshit under pressure isn't for me. Also have all aluminum radiator, silicone hoses and electric fan.
Mike

[STAATS]

STAATS:

This is what's needed. I just called Moroso to see if they are willing to produce the existing tank with the bung. it's a on-off "custom" (ie: pricey) job. They are going to get back with me.

When you get this completed, assuming it works, could you please give details of location. with measurements, of the bung on the Moroso aluminum tank? I'm assuming you'll simply replicate the location from the OEM plastic tank to the aluminum (pronounced AL-U-MINI-UM for our British brethren) Moroso tank. This rids me of another fail point (split OEM tank) on the race car.

You get to be the guinea pig. By the way, thanks in advance.

Feff

Haha yer i searched the web over with nothing so figured I would be the guinea pig...

I was planning on putting it "behind" the tank... so like if you are looking down on tip of the tank with the sight glass on the right hand side then I am going to do it on the top side... so just around the corner from the current sight glass bung so then the wiring and all that is hidden around the corner ... The sensor has its own wiring pig tail so I was going to put a connector on that and then chop the BMW off the other end and do a matching one so then it can be replaced easily if required... I mean all the research I did there is no reason it shouldn't work...

I thought I was the only guy running a Moroso who also wanted the level light haha now I know others are interested I will keep y'all posted... if it works we should probs lobby Moroso to make it like that as standard... or offer it as a standard option