Laing DDC 12v Pump

gr1mey · 3 May 2006 at 20:24

recieved one of these pumps today, with one of the plexi tops included.

Now I removed the old black placcy top to the pump and replaced it with the plexi using the included screws- but there was no gasket or sealing agent included? does the plexi just sit on top of the pump and held by the screws? will this be suffiecient under pressure?or should I add a bead of silicone or something to it?

gr1mey · 3 May 2006 at 20:29

there's a small o-ring that surrounds the center of the pump, but when I tightened down the plexi top, there was no "seal" apparent, you know what i mean, like a bit of resistance you have to tighten past to get a nice seal...

maybe thats all it needs...

gr1mey · 3 May 2006 at 20:42

the plexi top is designed to fit this pump exactly, infact I expected it to be already fitted.

gr1mey · 3 May 2006 at 20:47

its a very nice fit, Im just a bit suprised there isnt more to stop it leaking, however when I get this all setup in the next few days and put it on leak test all will become apparent I guess.

If it does leak I will just gun a line of clear silicone around the bottom of the plexi top and re-fix it to the pump, that will stop it leaking for sure.

Just wondered if anyone has had experience of this before...

oh and just an aside...I also recieved some Royal Purple Super Coolant to add into my system, it didnt come with any instrustions, and upon reading their website for mixing ratios this came up:

When using Purple Ice® with an anti-freeze / water concentration, Royal Purple recommends adding 1 ounce of Purple Ice® per quart of cooling system capacity. For straight water (racing) applications, Royal Purple® recommends adding 1.5 ounces of Purple Ice® per quart of cooling system capacity.

wtf is this in english!?! these measurements seem like they're out of the ark to me! when it says quart does it mean quater of a pint? so 1 fl/oz per quater pint???

gr1mey · 4 May 2006 at 08:16

ok apparently a quart is 2 pints, so thats that cleared up

gr1mey · 5 May 2006 at 18:50

there was no o-ring with the plexi top, only the 4 loner screws.

will test the pump for leaks tomorrow

gr1mey · 5 May 2006 at 19:23

yes thanks dave, I checked the pump just a few moments ago and it does have an o-ring installed.

plug plug plug

gr1mey · 6 May 2006 at 19:20

I used PTFE tape on the threads, you should use the tape on all threaded joints.

gr1mey · 6 May 2006 at 21:37

its good practice to do so indeed.

gr1mey · 7 May 2006 at 09:06

I used the two front ports with 1/2" ID tubing, flow rates are exceptionally good.

The top port does give a SLIGHT boost in flow, but I didnt use it as it would have taken up more room in my 3.25" bay which I need.