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iminhell1 iminhell1 is offline
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Posts: 325
Join Date: Jul 2015
Car: 2010 135i
Default 05-05-2017, 09:52 PM

*edited 05/07/2017

So here is how this can be reworked on factory parts you already have ... you don't have to buy anything (providing you're careful).


This is how you are connected stock,




You'll have to cut all the clamps off the T. The hose going to the overflow will stay with the overflow tank.
Now you'll have to remove the hose from the bottom of the upper radiator hose. Cut the clamp off. This connector will now go to the thermostat and connect to the hose that goes to the lower coolant pipe. You will have to dremel the short pin longer. If you look carefully you'll see the alignment pins are different widths and lengths, it's very slight but matters.

(ignore the parts I used, this was trial fitting)





Now the T will go to the bottom of the upper rad hose,





All factory parts and unmodified hoses. Just need to move them around.



You need a 90* coming off the thermostat. The connector needs to be modified.
A T at the lower port of the upper hose.
A 45 at the coolant bottle.



*edit* 6/07/2017

All's been working flawlessly. No leaks and no issues at all.


2010 135i auto,
2020 mods: Speedtech S366, VTT DBBL, PR Coils, dual 450's, etc
Best stock turbo 1/8 mile: 7.469 @ 98.56, 1.769 60'
Best stock turbo 1/4 mile: 11.480 @ 121.79 1.802 60'

Last edited by iminhell1; 06-07-2017 at 02:09 AM..
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