I started out useing the TA adj oil pressure kit ... my oil pressure was all over the place. I then went with the stock Stg1 white spring & stock reg nut ,oil pressure is now rock steady . to fine tune the pressure I am thinking of trying the TA adj reg nut with this spring , anybody used this set up ? ick
Sure, you can do that. Before the adjustable pressure regulator was available, you could step up to the white spring, and even shim that with a small allen head bolt (1/4"). What puzzles me is your statement that your oil pressure was all over the place. What exactly does that mean? I can't imagine why that would be the case, after all, you should be able to attain the same tension with the adjustment, but, whatever works best, use it.
Larry, before my oil pressure would run 15# @ idle , 2500/4000rpm it would run up to 55# then @ 4200 or so it would drop back to 45#. My guess is the (long) spring when compressed was not as linear in rate as the white (shorter) spring. After installing the short white spring my oil pressure is all most spot on. I turned the adj all the way in on the stock spring & could not gain any more pressure. I would think that all engines require differant spring rates ,thus the TA adj regulator. I would like to set mine at 65# @ 5500rpm. I will install the white spring @ the same installed hight & then remove a round at atime until I get to 65#s Thanks , ick
gsx, I have checked the oil filter twice & have found no problem with metal . Both the regular & stge1 (white) springs were tested with the same oil (10-30) Brad Penn that is still in service at this time. The long stock spring did not build oil pressure as the rpms went up ,but the white spring builds more pressure as rpms go up ,I have 70# at 5500 & dead nuts 20# at idle, I have been told that the spring pressure only effects high end readings but in my case it stablized both ends. Maybe my engine is a little wide on the clearances .0023rods & .0025mains but at 70# max rpm I think I could live with it. All readings with oil (HOT) max operating temp. I am going to try the adj cover if it will set up with the same inst hight as the stock reg cover(nut) & try to lower pressure by 5# for a reading of 65# @ 5500 max. Thanks, ick
You said the pressure readings are with the engine "hot", hot as in its up to temp as it idles, OR hot as in you drove it for half hour at highway speeds?
Mark, If I had that oil pressure in a motor, I would certainly not be looking to reduce it. I quit using an adjustable regulator a while ago, I found that I rarely adjusted it, and the white spring gave me the pressure range I was looking for. Which in a Buick, the more the merrier.. Street motors, 70 psi is a minimum, I am happier around 80. I don't care what the "psi per rpm" charts say, this is no SBC with tiny journals in it. One of the tricks to keeping the big race motors alive (700HP and up) is to run a much oil pressure as you can get.. Peg the 100psi gauge at startup? ... perfect... 125lbs at speed all warmed up?... run it! JW
Hello Jim, Did I here you right? On start up I see 80# around 1500rpm COLD after 3-4 min of warm up I see 50# around 1500rpm & after driven 5 miles or so it idles @ 20# steady . The idle numbers I am very happy with. I will leave the max oil pressure alone & call it done. If I had to I could preload it with a shim to reach 80 # if needed. The white spring gave much better oil pressure @ 2000rpm & up, and was very linear on the gage. I tried every setting with the adj set up & could not come up with a linear reading & even lost some pressure @ 4500-5000 & then it came back up 10#s. The bottom line is I now have Great linear pressure from idle to 5500 ( thats all this cam can spin ) Last time i went to Boldons flat with 3.42 gears P275 60 15 M/Ts TH400 (built by Jim W) 2800-3000 9.5 TSP convertor 462 9.9-1cr 226/240 fast ramp cam (rpm challanged) but works well with my gear ratio & tires est 3.25 or soo. On the radar gun 1/4 mile it ran 107 mph crossed the line at 5100 rpm. I shift 1-2 @4800 & 2-3 @ 5000rpm , on a stop watch it shows 12.6 & I know it my not be on the money but does allow me to test my car . Mark Demko , oil was @ operating temp driven over 10 miles to the flat to test . The white spring worked for me & my brg clearances. Thanks for the reply & for sheding some new light on the oil pressure needs of the Buick. Mark
I think if you get the adjustable regulator, it comes with a stock spring, not the white one. http://www.taperformance.com/proddetail.asp?prod=TA_1502
http://www.v8buick.com/showthread.p...-pressure&highlight=white+spring+oil+pressure more oil pressure discussion.
One of the tricks to keeping the big race motors alive (700HP and up) is to run a much oil pressure as you can get.. Peg the 100psi gauge at startup? ... perfect... 125lbs at speed all warmed up?... run it! thats what my engine is doing now. it has 125lbs at 1000rpm when cold and that scares me, once warmed up it has 30@1000rpm and 80 throughout the run. you dont think i should worry??? i have the scavenger setup and its all new to me. im used to having 80-90 cold at 1000rpm. im worried the dist. or cam gear will wear out fast?
