| Author | Message | ||
     Dr_greg |
I've been thinking of installing an oil pressure gauge on the Uly. I added one to my old '92 Ducati 900SS and it was kinda neat. However, I don't know the oil pressure range of the XB engine. I know it is quite low (due to "higher-pair" bearings...BTW that's a kinematic term). Do any of you know the oil pressure range? --Doc | ||
| Ourdee |
All right. Here comes another tutorial from Dr_greg. Will it be a sender and electronic gage in the dash, or mechanical threaded right into the engine? Oh, and pics, lots of pics please?  | ||
| Panhead_dan |
I put an oil pressure gauge on my panhead once. Scared the hell out of me so I removed it! Sorry Doc, I have no clue about Buell oil pressure. Bet it's more than a '50 FL. | ||
| Husky |
Oil pressure per 08 Manual, engine oil temp 180 F. At 3000 RPM 20-28 psi At idle (1050-1150 RPM) 10-16 psi | ||
| Crusty |
A friend of mine had a panhead that had zero PSI for oil pressure when it got hot. It ran well for years. I never worry about oil pressure on my Buell. | ||
| Tootal |
That's right Crusty. Even my evo would drop to 3 psi and oil light would flicker but at 153,000 miles it was still going! If I had set the idle at 1000 it would have been a little better but it just sounds so good at 800! Roller bearing cranks are a wonderful thing, just about bullet proof! (Message edited by tootal on April 25, 2010) (Message edited by tootal on April 25, 2010) | ||
| Hughlysses |
Yea, these engines are not like auto engines with bearing inserts that depend on a "cushion" of oil to prevent metal-to-metal contact. The bottom end of these engines would probably go for miles with little to no oil pressure. | ||
| Dr_greg |
The bottom end of these engines would probably go for miles with little to no oil pressure. True dat. I seem to recall a (excuse me) H-D ad some time ago in which they claimed they ran one of their engines WITHOUT OIL for 50 miles, and it survived. However, don't talk to me about bulletproof. My '92 Ducati 900SS has ball main bearings, and the left retainer fragged itself, allowing all the balls to migrate to one side. This allowed enough clearance to develop that eventually EVEN I noticed it. When I pulled it apart that end of the crankshaft had about 1/8-inch clearance! Check out the inner race:  Needless to say I did a total rebuild, which was most enjoyable (fitted 11:1 pistons). 'Nuff said. --Doc | ||
| Ourdee |
So Doc, How are you planning on doing it? New sensor or tapping into the current one? | ||
| Dr_greg |
So Doc, How are you planning on doing it? New sensor or tapping into the current one? I want to keep the idiot light, so I'll figure out some kind of fitting that allows that. Aeroquip hose up to the gauge, and that'll be it. Dunno where to mount the gauge, though... BTW, this is a very "back-burner" project. Lotsa other stuff needs attention first, unfortunately. --Doc | ||
| Luftkoph |
yes those nasty plain bearings,uh like in an airhead BMW,your lucky if they last till 300,000 | ||
| Tootal |
yes those nasty plain bearings,uh like in an airhead BMW,your lucky if they last till 300,000 Only if you keep oil pressure! BMW's run high oil pressure and that works great. Our point was that the HD/Buell cranks don't require much oil. | ||
| Ratbuell |
Check an automotive source for a sending unit. I know on the turbo Dodges I play with, some have only an idiot light (one type of sender, dead ringer for what we have on the XB), and some have a gauge and a light (different, but still a single, sensor). Come to think of it, so do FLHTC and FLHTCU Harleys. Single sender, dual purpose - might be the easiest way to add your gauge...but you're going to want to know the sender's V range and get a gauge to work with it. Definitely interested in what you come up with! | ||
| Dr_greg |
Not really interested in a sender. Want this to be "natively" hydraulic, if possible. But thanks. --Doc | ||
| Ratbuell |
Ah, gotcha. You want mechanical. I missed that above - this is what I get for scanning  How often do you use your front power outlet? Could replace that (hole's already there) with the gauge.... | ||
| Tpehak |
Anyone installed this oil pressure kit? https://docs.google.com/forms/d/1AkkFwJhQgZjsG4Pu0 2c2r0cErC5WPp1uIi1Ao1bY0iI/viewform?edit_requested =true&fbclid=IwAR0XoqdlBTrH9mxsXSYnrk_LodcQZ4MQkOU TpKsUwhLyJYJ59w9NyADRHOI |
