m42 rad & m50nv heat

[blacked_e30]

ok so ive done some searching and ive found that to be able to retain heat with the m42rad and m50 you have to use the m20 spider hose and m50 heater hose? im not sure if thats correct cause i cant find and straight answer. its getting cold and i NEED heat if anyone can give me a definitive answer i would be most grateful. thanks :)

[hwy84]

Huh?

No.

M20 Spider will bypass the throttle body heating, but has no effect on the operation of the heater core.

M50 Spider has provisions for the throttle body heater, which many people on the forum bypass anyhow (if they don't live in extremely cold climates).

M20 Heater hose fits well form the back of the head to the heater core, since it incorporates a 90 degree bend.

M50 heater hose does not fit well from the back of the head to the heater core, as it only has a ~45 degree bend.

[blacked_e30]

so my next question is how should i go about maintaining heat?
what hoses should i use sorry to be a noob

[blacked_e30]

i mean what hose should i use to run from heater core to m42 radiator? i understand that i need the m20 heater hose from head to heater core.

[blacked_e30]

bump

[trackjunkie21]

Don't play stupid this has been answered numerous times on a daily basis. It's the first sticky in this subforum.

[blacked_e30]

Its not that im playing stupid ive searched and found nothing straight forward otherwise i wouldnt be posting... a link would be nice or just and part number. i understand that i use the m20 heater hose from head to core. i need to know what hose to i use from expansion tank on m42 rad to engine. is it the m20 spider or the m50 spider?

[brokenbimmer533]

use a hose that is the correct inside diameter and long enough to reach the desired location. Look at part diagrams on realoem or look for pictures on here or even google. its not difficult. i used m50 spider.

[blacked_e30]

thanks dude thats all i was asking haha i just wanted to make sure before i went out and spent the money thank you again

[brokenbimmer533]

Im not running m42 rad though. look at the swap picture thread. you will see plenty of m42 rad setups, look at the coolant hoses. might not be direct fit, you may need to trim here and there

[blacked_e30]

well damn ill just try both hoses and return the one that dont work or might have to suck it up and get an m20 rad cause i know for certain what the setup with it is.