Turbo M52 with aluminum m42 radiator ?

[Bigboost3]

has any one had any issue running a aluminum m42 radiator on a turbo m52

was think about running this radiator setup sense the reservoir is pretty much built into the radiator and mounts on the opposite side of the turbo and cleans up the engine bay and wont have to have a coolant tank on the fender well


thanks in advance

[wworm]

You'll have to have a really freakin good fan but even then I'd be wary of it. Even N/A the m42 rad can have some issues properly keeping the engine cool

[e30davie]

If you already have it give it a go.

[Bigboost3]

You'll have to have a really freakin good fan but even then I'd be wary of it. Even N/A the m42 rad can have some issues properly keeping the engine cool

Well I would use a aluminum one not a stock one hoping that it’s being and aluminum radiator with a good fan would be better.


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[Bigboost3]

If you already have it give it a go.

I didn’t get one yet but I did these one of these on eBay

https://rover.ebay.com/rover/0/0/0?mpre=https%3A%2F%2Fwww.ebay.com%2Fulk%2Fitm%2F262671840636

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[Codym42]

I didn't even know you could buy an aluminum m42 radiator with built in tank. That's pretty cool!

[Bigboost3]

I didn't even know you could buy an aluminum m42 radiator with built in tank. That's pretty cool!

Yea found that on eBay comes from the Netherlands


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[eternal24k]

looking forward to a report on that radiator...

[Bigboost3]

Guess I’ll just have to try it out and hope for the best and just get a really fan.


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[pazi88]

Well I would use a aluminum one not a stock one hoping that it’s being and aluminum radiator with a good fan would be better.


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What makes that better than stock rad. In sense of cooling power. That has the same core as the stock rad. Only difference being aluminium end tanks.

I use the stock e36/m42 rad in my m52 turbo with no problems ;)

[MR E30 325is]

With Pazi88. Aluminum end caps don't have a dramatic effect on the cooling capabilities.

My S52 swapped 318is started out with the stock radiator. I had issue after issue with overheating. Quickly went to an E36 Mishimoto. No issues for years.

[Bigboost3]

What makes that better than stock rad. In sense of cooling power. That has the same core as the stock rad. Only difference being aluminium end tanks.

I use the stock e36/m42 rad in my m52 turbo with no problems ;)

So you use a m42 rad from a 318 e36 on your turbo m52 with electric fan? If so how many cfm is that fan ?


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[Bigboost3]

But then again isn’t the idea of an aluminum radiator because aluminum supposedly dissipates heat better


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[pazi88]

So you use a m42 rad from a 318 e36 on your turbo m52 with electric fan? If so how many cfm is that fan ?


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Well it's e36 rad from model which has air conditioning. So it's bit taller than e30 m42 rad. But otherwise it's same, so it's drop in replacement for facelift e30.

I had 375mm spal fan which is rated for 1620 m³/h of airflow. Which is 950 CFM if I calculated correctly. That was fine for normal driving, but too weak for doing long stand still burnouts etc. So I'm replacing that with e39 fan assembly. That feels like it will flow 2 to 3 times more air that the spal fan, and costs about the same. And it also includes the frame and resistors for multi speed operation. https://www.instagram.com/p/BfLQt53l...en-by=sipasema

But then again isn’t the idea of an aluminum radiator because aluminum supposedly dissipates heat better


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Yeah. But the stock one is also aluminium and that linked ebay rad has exactly same core as the stock one. Same size, same design, same thickness etc. So you pay extra for those shiny aluminium end tanks that do not make difference on cooling power.

[Bigboost3]

Well it's e36 rad from model which has air conditioning. So it's bit taller than e30 m42 rad. But otherwise it's same, so it's drop in replacement for facelift e30.

I had 375mm spal fan which is rated for 1620 m³/h of airflow. Which is 950 CFM if I calculated correctly. That was fine for normal driving, but too weak for doing long stand still burnouts etc. So I'm replacing that with e39 fan assembly. That feels like it will flow 2 to 3 times more air that the spal fan, and costs about the same. And it also includes the frame and resistors for multi speed operation. https://www.instagram.com/p/BfLQt53l...en-by=sipasema



Yeah. But the stock one is also aluminium and that linked ebay rad has exactly same core as the stock one. Same size, same design, same thickness etc. So you pay extra for those shiny aluminium end tanks that do not make difference on cooling power.

E39 fan interesting I’m gonna have to look into that. Thanks


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