High Oil Pressure : V-Twin Forum: Harley Davidson Forums
» Sponsors

» Insurance
Go Back   V-Twin Forum : Harley-Davidson Motorcycle Forums > V-Twin Performance Forums > Twin-Cam Engine Mods
New User? Register Forgot Password

Reply
 
LinkBack Thread Tools Display Modes
Old 12-27-2008, 06:40 PM   #1 (permalink)
Lifetime Premium
 
plongson's Avatar
 
Join Date: Jun 2008
Location: Nevada & Utah USA
Posts: 1,119
plongson wants to know Dino or Syn?
High Oil Pressure

I installed a Baisley spring during the HQ-34 cam install. With the weather being cold, start-up oil pressures can EASILY peg my 0-60 HD gauge and I suspect it is making 80 psi at times. I REALLY have to baby it for 10 minutes or so, to keep it below 60. Once the motor is warm, 185f, 2800 rpm = 45-50 psi.

QUSTION: What do you risk damaging on these motors with excessive oil pressures?? Oil pump damage, "O"rings, gasketed and flanged mating surfaces blowing out etc...or is there really no risk of high pressure damage.

I just got a replacement 100 psi gauge because I've blown the guts out of gauges at work, that were pegged and it's NOT as pretty sight.
__________________
On the road again...

plongson is offline   Reply With Quote
Sponsored Links
Advertisement
 
Old 12-27-2008, 06:45 PM   #2 (permalink)
Banned
 
Join Date: Feb 2008
Location: California
Posts: 1,090
TheNowhereman wants to know Dino or Syn?
Hmmmm, I'm happy to hold 15 psi at idle after warm up.
And my engine is only 4k old..
TheNowhereman is offline   Reply With Quote
Old 12-27-2008, 06:55 PM   #3 (permalink)
Lifetime Premium
 
nighttrain67's Avatar
 
Join Date: Nov 2003
Location: Middle Tennessee
Posts: 482
nighttrain67 wants to know Dino or Syn?
That much oil pressure is not a good thing. I would definately let it warm up before hammering it or you could end up with some bearing issues.
__________________

2002 NightTrain 117 inch
R&R Stage V Heads (83cc), JE Flat Tops (11.5:1), TR650G Cams, Delkron Cam Plate, Fueling Oil Pump, S&S Roller Rockers, "B" Lifters with limiters, Rivera Brute III Extreme, Mik. 48/Wood Air Cleaner, D&D Black Low Cat, Baker OD6 "R" Ratio, .80 OD
nighttrain67 is offline   Reply With Quote
Old 12-27-2008, 10:13 PM   #4 (permalink)
Lifetime Premium
 
Coolmaker's Avatar
 
Join Date: Feb 2006
Location: South Carolina
Posts: 2,816
Coolmaker wants to know Dino or Syn?
Have the Fueling cam plate, race oil pump, stretched spring (.050 plus). Pressure at startup is 60+, let it idle for a few and all is good. Runs about 45-50 at 2600-3000 after warm. It will not harm anything, oil cannot wash out a bearing.. Unless it has allot of abrasive material in it...
__________________
"Most of my money was spent on Motorcycles, Women, and Whiskey...The rest I just wasted"
Coolmaker is offline   Reply With Quote
Old 12-28-2008, 08:11 AM   #5 (permalink)
Premium octane member
 
TXCHOP's Avatar
 
Join Date: May 2004
Location: Downstate NY
Posts: 7,380
TXCHOP wants to know Dino or Syn?
Did you check the plunger movement when you installed the spring? Some times they can bind up a bit. I have never gotten that much pressure with the lmr2 spring.
__________________
S&S T124
TXCHOP is offline   Reply With Quote
Old 12-28-2008, 08:34 AM   #6 (permalink)
IronButt
 
Join Date: Jul 2008
Location: Woodstock, Ont, Can
Posts: 1,168
rbabos wants to know Dino or Syn?
Way too much pressure. Too much oil pressure will actually raise the oil temps, loads the pump too much and eat up some hp. Too much oil in the head area will cause carry over into the breather as well. In cold weather, it wouldn't hurt to leave a hair drier or heat lamp under the sump to preheat the oil some before startup. Even though the pressure reading maybe high, the oil is not splashing like it should for the cylinders and lubrication is actually less than it should be. 35-45 psi at temp is more than enough.
Ron
rbabos is offline   Reply With Quote
Old 12-28-2008, 09:44 AM   #7 (permalink)
Lifetime Premium
 
plongson's Avatar
 
Join Date: Jun 2008
Location: Nevada & Utah USA
Posts: 1,119
plongson wants to know Dino or Syn?
Thanks guys,

Ya, I pulled the plunger and made sure it floated freely so I'm confident its not binding. I also don't think its binding because the pressure doesn't just slam and peg the gauge, it floats and fluctuates and you can tell it is dumping oil.

This Baisley really has a different pressure curve than what I was expecting to see. The LMR-2 spring is only a 15% spring so we're only talking 3-5 psi or so more...but excuse the hell out of me, no one I've talked to has seen pressure that low with a Baisley. I didn't have a pressure problem going into this project and if I had a "Do Over" I'm not sure I'd install this spring, BUT...I'll wait until it's summer and it is 120f here in Southern Nevada...I might be real glad it's in there.

For now once warm, all is well, it idles at 20... and 40-50 at 3k. If there were no gauge, you'd never even have a clue. I have a new 0-100 psi gauge going on this morning, mainly so I don't damage the 0-60. So for now I'll just continue to baby it until things warm up.

Oh, just for reference, I'm running Mobil 1 V-twin 20w-50. The low here yesterday was 24f and the high was 45f.
__________________
On the road again...

plongson is offline   Reply With Quote
Old 12-28-2008, 10:05 AM   #8 (permalink)
Lifetime Premium
 
nighttrain67's Avatar
 
Join Date: Nov 2003
Location: Middle Tennessee
Posts: 482
nighttrain67 wants to know Dino or Syn?
I had the same issues as your having with the LMR spring on both mine and my wifes softails. I even lived in Vegas and still had high oil pressure....too high for my liking, so I put stock springs and stretched them bit. Pressure is perfect.
__________________

2002 NightTrain 117 inch
R&R Stage V Heads (83cc), JE Flat Tops (11.5:1), TR650G Cams, Delkron Cam Plate, Fueling Oil Pump, S&S Roller Rockers, "B" Lifters with limiters, Rivera Brute III Extreme, Mik. 48/Wood Air Cleaner, D&D Black Low Cat, Baker OD6 "R" Ratio, .80 OD
nighttrain67 is offline   Reply With Quote
Old 12-28-2008, 10:28 AM   #9 (permalink)
Premium Member
 
Join Date: Dec 2006
Location: southwest OH
Posts: 624
06roadglide wants to know Dino or Syn?
Quote:
Originally Posted by plongson View Post
Thanks guys,

Ya, I pulled the plunger and made sure it floated freely so I'm confident its not binding. I also don't think its binding because the pressure doesn't just slam and peg the gauge, it floats and fluctuates and you can tell it is dumping oil.

I may not be understanding you correctly but it sounds as if your thinking that the spring is letting the plunger move freely and the gauge represents that fact.

Actually you won't see the gauge moving when the plunger is dumping oil. Lets say your sring allows the plunger to open at 60 psi, the plunger will only move enough for the pump to maintain and hold 60 psi until the pump can no longer build that amount of pressure then it will close. The floating or fluctuating that you see from the gauge is the pump simply building more pressure at higher engine speeds and then settling back when idling.
06roadglide is offline   Reply With Quote
Old 12-28-2008, 11:06 AM   #10 (permalink)
IronButt
 
Join Date: Jun 2004
Location: montana
Posts: 2,385
Mtclassic wants to know Dino or Syn?
I had the same high oil pressure with the baisley spring. I ran it for about 20,000 miles with no problems but I eventually pulled it out on a subsequent cam change. It just buggedme pegging the guage at cold start up.
Mtclassic is offline   Reply With Quote
Old 12-28-2008, 11:41 AM   #11 (permalink)
Lifetime Premium
 
strokerjlk's Avatar
 
Join Date: Jun 2008
Location: IL.
Posts: 6,887
strokerjlk is reading this now saying WTF is this?
I know some will disagree with this. or get pissed off!
When I was installing my cams I considered using one my self. (baisley LMR/ 1or2).
So i started asking around, 1st pm'ed Dennis (claydbal) he stated there wasent any reason to use them in the 07 up. But he puts them in the earlier pumps as a courtesy. Ok I had heard that before, so I accepted that. But I am one to always turn these kind of things into a research project LOL. So I ask my buddy who works at a dealership what he thinks about them . He stated that he has not installed any but taken a lot of them out. He also stated that he sees a lot of problems with sumping ,blow bye, seeping gaskets with these various springs. In defense or support of the springs he said he has seen some bikes come in with them with no problems. 3-5 extra Pd's wont hurt anything but 30- 40 is another story. He also said he sees a lot of sumping because of DIYSers not getting the pump aligned right this and the combination of the high pressure caused by the spring is disaster. I am in no way bashing any one for using them, if you get the pump lined up and only have 3-5 extra Pd's then all should be good. And the guys using them are obviously having good luck with only the little extra pressure.
I just think in this case that more is not always better. (30- 40 extra pd's)
__________________
07 ULTRA
SE 120Rxtra....under construction
AMRA
SE 218
DR 218




Light travels faster than sound. This is why some people appear bright until you hear them speak.
strokerjlk is offline   Reply With Quote
Old 12-28-2008, 12:17 PM   #12 (permalink)
Arrogant Bastard
 
jasilva's Avatar
 
Join Date: Oct 2005
Location: Kommifornia
Posts: 1,264
jasilva wants to know Dino or Syn?
Plongson, you should really consider running a thinner oil in winter conditions, especially where your located(I'm assuming somewhere in NE Nevada near Bonneville?). I have the LMR2 spring in my bike and I'm running 15w-40 Delo 400 dino oil for the first 1k miles on a new build. I get about 55-60psi on start up and 45-50 psi at 3k rpm after warm and 20 psi at idle. This is in 35-50 degree temps.

Joe
__________________
__________________________________________
If con is the opposite of pro does that make congress the opposite of progress?
__________________________________________
Isaiah 6:1-9
jasilva is offline   Reply With Quote
Sponsored Links
Advertisement
 
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are On


Powered by vBadvanced CMPS v3.2.2

All times are GMT -5. The time now is 03:47 AM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
Content Relevant URLs by vBSEO 3.6.0
(C)2001-2012 V-twinForum.com All Rights Reserved (C)2001- V-twinForum.com All Rights Reserved
Motorcycle News, Videos and Reviews
Honda Grom Forum Harley Davidson Forum Honda 600RR Kawasaki Forum Yamaha R6 Forum Yamaha FZ-09 Forum
1199 Panigale Forum Roadglide Forum Honda CBR1000 Forum Vulcan Forum Yamaha R1 Forum Yamaha R3 Forum
Ducati Monster Forum Harley Forums Honda CBR250R Forum ZX10R Forum Star Raider Forum Yamaha Viking Forum
Suzuki GSXR Forum V-Rod Forums Honda Shadow Forum Kawasaki Motorcycle Forum Star Warrior Forum KTM Duke 390 Forum
SV650 Forum BMW S1000RR Forum Honda Fury Forum Kawasaki Versys Forum Drag Racing Forum Ducati 899 Panigale Forum
Suzuki V-Strom BMW K1600 Triumph Forum Victory Forums Sportbikes BMW NineT Forum
Volusia Forum BMW F800 Forum Triumph 675 Forum MV Agusta Forum HD Street Forum Suzuki GW250 Forum
Yamaha Motorcycles Victory Gunner Forum Honda Vultus Forum HD LiveWire Forum Ninja H2 Forum Ducati Scrambler Forum