K-series plumbing

[Ian Hayward]

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

[Bozz]

IIRC The J hose is routed over the top of the bypass on mine.

 

Bozz

 

McLaren Orange and Black 1.6SS 6 Speed here

[SLR No.77]

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.

 

[prs]

You can avoid any possibility of an airlock by drilling a tiny hole in the stat

Phil S7SVN

[Ian Hayward]

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

 

[PAUL MARRIOTT]

Ian

 

your principle of routing the pipes uphill is sound, I've done the same with mine and never had an airlock

 

Paul M

[7 wonders of the world]

........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 !