Join Date: Feb 2011
Location: Edmonton, Alberta Canada
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There are several big name diesel performance shops that recommend doing this to get coolant going thru the hot spots at the back of the heads. Only good things can come from doing this. You drill and tap into the back of the heads. Then you do the same thing just below the thermostat.
When I swap the front cover on my engine to put in the 100 mm water pump I'll be putting a brass spacer under the thermostat to tap into for that end (supply) of the coolant lines just because I feel better with more thread contact then the thin front cover material. Your not robbing coolant flow from the rest of the engine since it's coming off before the thermostat which is as we all know a restriction in the system.
SCT, no studs...yet, Dual OEM intake air filter housings, Banks intercooler & intake elbow, Banks exhaust system, Windrunner ported intake manifold, Bullet Proof Diesel remote oil cooler & thermostat, AirDog2 (plus a couple spares), Power steering filter (Amsoil dual-bypass), MagTec deep ATF pan, Electric oil pre-lub pump, Dakota Digital gauges.
Last edited by Term3; 05-13-2012 at 08:02 AM.