Ian Hayward Posted February 22, 2007 Share Posted February 22, 2007 Is the bypass hose on a K-series routed above or below the radiator J hose? The build manual seem to show it below, but surely this increases the possibility of air locks as the top of the J hose is above the level of the thermostat housing? Thanks Ian Link to comment Share on other sites More sharing options...
Bozz Posted February 22, 2007 Share Posted February 22, 2007 IIRC The J hose is routed over the top of the bypass on mine. Bozz McLaren Orange and Black 1.6SS 6 Speed here Link to comment Share on other sites More sharing options...
Leadership Team SLR No.77 Posted February 22, 2007 Leadership Team Share Posted February 22, 2007 I've done it both ways and as long as there is no air in the system, either method is fine. With a dry sump setup the j-hose needs to be above the by-pass hose to clear the scavenge pulley. Stu. Link to comment Share on other sites More sharing options...
prs Posted February 22, 2007 Share Posted February 22, 2007 You can avoid any possibility of an airlock by drilling a tiny hole in the stat Phil S7SVN Link to comment Share on other sites More sharing options...
Ian Hayward Posted February 22, 2007 Author Share Posted February 22, 2007 I'm pretty sure the car had the bypass below the J hose before I removed the engine (should have taken more pictures!). I have fitted a 82' thermostat that already has a small opening to help bleeding. It just seems more logical to have the hose below the bypass as this ensures that it is uphill all the way to the thermostat. I suppose that by moving/squeezing the hose during the filling/bleeding process this small air pocket can be fairly easily removed. Thanks Ian Link to comment Share on other sites More sharing options...
PAUL MARRIOTT Posted February 22, 2007 Share Posted February 22, 2007 Ian your principle of routing the pipes uphill is sound, I've done the same with mine and never had an airlock Paul M Link to comment Share on other sites More sharing options...
7 wonders of the world Posted February 25, 2007 Share Posted February 25, 2007 ........or take the a;ternative route of re lumbing the systems with a PRRT and doing the job propoerly instead of simple making do with a poorly designed coling system which has in many cases compromised some very expensive motor Too young to be old ! Link to comment Share on other sites More sharing options...
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