300tdi cooling - blocking the head flow to the heater matrix?

julianf · Nov 30, 2016

Is the 300tdi reliant on the port at the back of the head, that runs to the heater matrix?

If that port was blocked off (not looped back, but blocked) would the cooling suffer?

Ie is it just a convenient take-off for the matrix, or is it actually required?

Magicgrotto · Nov 30, 2016

IT aint that F/IN warm

300bhp/ton · Nov 30, 2016

Why would you want to block it off? Surely just looping it round is the easiest thing to do and something you'll know can't cause any harm.

julianf · Nov 30, 2016

I want to fit a webasto heater. People generally seem to fit them in series, between the head, and the matrix.

I feel less than comfortable doing this, given that the circulation pump on them is restrictive (when not running) and could, i guess, block the flow entirely in the wrong situation.

So im asking what would happen if that port on the head was blocked.

Kwakerman · Nov 30, 2016

Looking at the manual you may get away with it as it says a proportion of the flow goes to the heater, that indicates that there is still flow through the head by other means. However don't know if that means you may also get hot-spots in the head. Your choice!

jamesmartin · Nov 30, 2016

julianf said:
Is the 300tdi reliant on the port at the back of the head, that runs to the heater matrix?

If that port was blocked off (not looped back, but blocked) would the cooling suffer?

Ie is it just a convenient take-off for the matrix, or is it actually required?

it can be blocked off, a portion of the flow from the block through the head to thermostat housing is diverted to flow to the heater

300tdi cooling - blocking the head flow to the heater matrix?

julianf

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Magicgrotto

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300bhp/ton

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julianf

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Kwakerman

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jamesmartin

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