Coopz Posted February 11, 2013 Share Posted February 11, 2013 L28NA to ET build in progess. Was planning to feed coolant to the turbo using a branch from the heater feed like the original SU manifold coolant route but getting 3/4" braided hose down to a 5"8 barb and -6AN looks nasty. Then noticed the unused thermistor fitting hole between cylinder 5 and 6 in the P90 head. Any opinions on using this as the turbo coolant feed? Quote Link to comment Share on other sites More sharing options...
Xnke Posted February 11, 2013 Share Posted February 11, 2013 (edited) Don't draw coolant from the head. Get it from the block drain on the lower rear manifold side of the engine, and return to the lower thermostat housing. Otherwise, make a spacer block for the water inlet to the water pump, and add a port to draw coolant from there. Edited February 11, 2013 by Xnke Quote Link to comment Share on other sites More sharing options...
Coopz Posted February 11, 2013 Author Share Posted February 11, 2013 Block coolant drain plug is blocked by the exhaust manifold. "make a spacer block for the water inlet to the water pump" Any more details or pics of such a spacer? Quote Link to comment Share on other sites More sharing options...
NewZed Posted February 11, 2013 Share Posted February 11, 2013 Isn't the CHTS hole a dry hole? If it isn't, it's a tiny hole to the coolant passages. Wouldn't get much flow through there as-is. Quote Link to comment Share on other sites More sharing options...
LanceVance Posted February 11, 2013 Share Posted February 11, 2013 Isn't the CHTS hole a dry hole? If it isn't, it's a tiny hole to the coolant passages. Wouldn't get much flow through there as-is. You are correct, it's dry. Quote Link to comment Share on other sites More sharing options...
Xnke Posted February 15, 2013 Share Posted February 15, 2013 By spacer plate I mean cut out a copy of the water pump inlet flange about an inch thick, drill and tap it for the fitting, and sandwich it between the water pump inlet and the timing cover with two gaskets. Quote Link to comment Share on other sites More sharing options...
palauoriginal Posted February 25, 2013 Share Posted February 25, 2013 I am also looking for a turbo coolant feed atm. anyone have some pics? Quote Link to comment Share on other sites More sharing options...
Tony D Posted February 25, 2013 Share Posted February 25, 2013 Block coolant drain plug is blocked by the exhaust manifold."make a spacer block for the water inlet to the water pump"Any more details or pics of such a spacer? You can bend tubing around obstructions... Quote Link to comment Share on other sites More sharing options...
Coopz Posted February 26, 2013 Author Share Posted February 26, 2013 Thanks for the info. Picture doesn't really show the issue but the exhaust runner from cylinder 6 is directly over the block drain plug and is fairly snug to the block. I'm back to using the previous manifold water pipe from the other side of the engine as the return and am feeding from the thermo housing. Quote Link to comment Share on other sites More sharing options...
big-phil Posted February 26, 2013 Share Posted February 26, 2013 In this video I show where I get water for the turbo Quote Link to comment Share on other sites More sharing options...
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