4 replies to this topic

[edjohnson]

Basically just put my 998 in the car, and plumbed it all in this weekend, and was wondering which pipe was which

Logic tells me the one closest to the carb would be the feed from the head, and the one nearer the wiper motor would probably go to the bottom hose. or does it even matter?

its a 1989 mini thirty

cheers

ed

[DannyTip]

On mine the top one goes to the radiator bottom hose and the bottom one goes to the outlet on the head.

[biggav]

i don't think it matters much as the water is pumped. and goes in and out of the matrix at a similar level.... i think

[Dan]

Does matter.

Firstly there is more than one layout of heater pipes and it sounds like Dannytip is talking about a later system than you are Edjohnson.

Yes the pipe closest to the clutch is the feed to connect to the heater valve and the other end runs to the bottom hose. That is so long as they are connected up properly at the heater. There are a few different heater matrices but in general the feed should be lower than the return if possible but most important is that the coolant flow should enter the core of the matrix closest to the passenger cabin and return from the core closest to the bulkhead (the matrix is made of two cores normally, one behind the other). This is so that the incoming air can take the most heat out of the coolant making the heater work most efficiently. Air locks are less likely with the heater plumbed properly.

[edjohnson]

cheers Dan, I have it hooked up ok then. Dunno whether its ok on the matrix though!! but its all plumbed in ok i the engine bay.

Thanks Again

Ed