Little update on my thread Oil Pressure And Oil Temp Guage Opinion - Bimmerforums - The Ultimate BMW Forum
, I decided not to cut the vanos line and use an idea from Audi. I bought an extra Banjo bolt, drilled and tapped that to 1/8-27 NPT and will use that as a source for oil flow for temp and pressure. Now I have to save up for the gauges and senders. I had a slight problem with the threading process, it got a little crooked but the elbow still went in. I just hope it's indexed right when I install it IDK if I'll be able to get much more of a turn on it. With the elbow and a tee I should be able to get both senders in. But now that I think about it maybe I should put it at the other end of the line so the fittings get the flow before the oil changes direction. I don't want my senders in an air pocket. Could be a PITA to put them at the other end, but might be better overall. Any opinions?
I installed the adapters for my sending units tonight, now I can order my gauges, I'm going for Prosport 52mm amber/white. I put an old mechanical oil pressure gauge in to test, but I don't think it's accurate at 100psi and 50 after I shut the engine off. As you can see I adapted a $7 brass insert coupling for the temp sender, 1 1/8-27 NPT hole for the sender and a 10/32 machine screw hole for a ground stud. I also soldered the stud in to assure no leaks. I only cut about a 1/2" wide band out of the upper hose, enough for the fittings, the coupler was a perfect fit inside the hose. I grounded the coupler to the oil filter housing, either threaded hole will suffice. The clamps made for less mess and less bleeding. With the thermostat closed I lost very little coolant.
I checked the oil pressure with a mechanical gauge and had 65psi at cold start up, 40 deg. F, and 50+ after the idle dropped. BTW I run 10w-40 Castrol Syntec.
Cosmos schwartz metalic Sparco strut brace factory X-brace 55w 6000k HID w/LED angel eyes smoked Lamin-X blacked out sidemarkers,tails and brakelights. DDM smoked corners and pedals. 35% tint all around, Prosport water temp and oil pressure gauges, Home Depot lip, M3 rear diffuser ASC-T delete.