17 replies to this topic

[Apdiliars250]

Im currently using a fletcher radiator I don't have any over heating problems but I would like to get the cooling system/ radiator a bit more efficient. The temperature is slightly higher than when my car was N/A It does gets slightly hotter in traffic. I have added a electric fan in the wing aswell.

Would a MED Ultimate Radiator or mini spares 2 core be any better than what is have?
also has anyone made a radiator shroud to help?

[IronmanG]

https://www.minispar...er-wing-pre1975

And

https://www.minispar...surround-rubber

Worked wonders for me. The hot air can only go out from under the wing. The difference in temperature of the wing before and after is substantially different

[Cooperman]

Do you have the 'Export 6-blade fan'. That will make a big difference.

[nicklouse]

Use a shroud. It improves the flow. And the MiniSpares rad. If the MED one is not aluminium then that could be ok. Not seen one.

[imack]

I've considered fitting an inner wing shroud to my car, but I've never got round to it.
My SW23 cammed road going 1380 runs the Radtech/MED ultimate radiator with an expansion tank, early narrow bladed plastic fan, old Unipart water pump and the 4" MED pulley plus semi dry decked. I always leave the heater valve open for flow though the matrix. It copes with ambient temperatures in the low 30° ok, on the move running around the N mark, but the gauge creeps to half way between N & H in traffic, so I switch the heater fan on for some additional cooling.

Edited by imack, 07 March 2025 - 09:38 PM.

[timmy850]

If it works fine, why change it? It’s easy to make it worse by putting in cheap parts or an incompatible combination of parts

It’s normal to get a bit hotter in traffic

What temp is it getting to? Is your gauge reading accurately? Have you got a heater fitted and does it blow hot?

[KTS]

https://www.theminif...ckup/?p=3753752

[Apdiliars250]

Do you have the 'Export 6-blade fan'. That will make a big difference.

I have the plastic 11 blade fan fitted. I have not tried the 6 blade fan. Would it still fit with the breather canister?

[Apdiliars250]

https://www.minispar...er-wing-pre1975

And

https://www.minispar...surround-rubber

Worked wonders for me. The hot air can only go out from under the wing. The difference in temperature of the wing before and after is substantially different

Does that fit with a aftermarket radiator like a fletcher?

[Apdiliars250]

If it works fine, why change it? It’s easy to make it worse by putting in cheap parts or an incompatible combination of parts

It’s normal to get a bit hotter in traffic

What temp is it getting to? Is your gauge reading accurately? Have you got a heater fitted and does it blow hot?

85 degrees on hotter days in summer it will creep up to 90 I always have the heater valve open once it gets hotter I have the heater fan on aswell. In slow traffic it will get close to 100 in the hotter days.
I don't know what you would class as over heating because it always runs ok

[Apdiliars250]

Use a shroud. It improves the flow. And the MiniSpares rad. If the MED one is not aluminium then that could be ok. Not seen one.

The MED one is aluminum. I was looking at the minispares aluminum one.

[timmy850]

 

If it works fine, why change it? It’s easy to make it worse by putting in cheap parts or an incompatible combination of parts

It’s normal to get a bit hotter in traffic

What temp is it getting to? Is your gauge reading accurately? Have you got a heater fitted and does it blow hot?

85 degrees on hotter days in summer it will creep up to 90 I always have the heater valve open once it gets hotter I have the heater fan on aswell. In slow traffic it will get close to 100 in the hotter days.
I don't know what you would class as over heating because it always runs ok

 

That sounds perfectly normal to me. With the radiator cap on the boiling point of water is above 100C, with a 13psi cap it's nearly 120C

[Apdiliars250]

https://www.theminif...ckup/?p=3753752

That looks really good did you notice the difference?

[Apdiliars250]

If it works fine, why change it? It’s easy to make it worse by putting in cheap parts or an incompatible combination of parts

It’s normal to get a bit hotter in traffic

What temp is it getting to? Is your gauge reading accurately? Have you got a heater fitted and does it blow hot?

85 degrees on hotter days in summer it will creep up to 90 I always have the heater valve open once it gets hotter I have the heater fan on aswell. In slow traffic it will get close to 100 in the hotter days.
I don't know what you would class as over heating because it always runs ok

That sounds perfectly normal to me. With the radiator cap on the boiling point of water is above 100C, with a 13psi cap it's nearly 120C

The cap is 1.1 bar 16psi..it does release a bit of pressure after a drive when engine is off sometimes on hotter days

[Steam]

The role of the thermostat is widely overlooked in running temp. If the rest of your cooling system is in good nick then using an 82C or even lower will reduce the running temperatures.