3000m Cooling System Incomplete

[Erich Stahler]

Took my race car project build for an MOT today, first time the engine has run for any length of time, started to overheat, looking at the attached diagram realised I don't have any of the pipes and header tank from 14 onward outlined in red, always thought 2 was the header tank, maybe its a swirl pot and 6 is the header, which may explain my overheating?

Anyone know what vehicle the missing tank is from originally?

[phillpot]

Personally I wouldn't have thought that was the reason for your overheating but............


Probably common to a few old BL vehicles but definately used on MGB's .... clicky.


Later ones were plastic

[bluezeeland]

Here you go...

http://www.moss-europe.co.uk/expansion-tank-arh250...

You haven't closed off the swirlpot have you ?

[plasticpig72]

In my opinion you need a header/expansion with Rad cap fitted (keep half full).
On the Swirlpot you need a Blank cap, not Rad cap so the Swirlpot pot can bleed air from top of Rad.
I have no problems with my 3000M or 3000S overheating and both have header/expansion tanks as your dia.
Alan

[Erich Stahler]

plasticpig72 said:

In my opinion you need a header/expansion with Rad cap fitted (keep half full).
On the Swirlpot you need a Blank cap, not Rad cap so the Swirlpot pot can bleed air from top of Rad.
I have no problems with my 3000M or 3000S overheating and both have header/expansion tanks as your dia.
Alan

Excellent, thanks Alan.