Is 2-3 bar oil pressure to low?
10-04-2011, 01:09 AM
#16
Addict
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Also, did you undo the main crank bolt to replace belts while you were in there? It needs to be torqued properly and the pulleys need to be on right to get full pressure. 2-3 bar at idle is ok when fully warmed up, but if that's all you have when cold, that's lower than normal.
10-05-2011, 11:17 PM
#19
Pro
Thread Starter
Alright.... I torqued the crank bolt down and am still have oil pressure around 2-3 bar. Any other suggestions? Its just odd because all the other problems that clarks garage points to would cause me to show no pressure or spike all the way. Thanks for the help guys.
10-05-2011, 11:22 PM
#20
Addict
Lifetime Rennlist
Member
Lifetime Rennlist
Member
WEll, obviuously you want to eliminate all of the really important and catastrophic possibilities, but, it's entirely possible that it's the oil pressure sending switch or the guage. Make sure the wires on the switch are secured well.
10-05-2011, 11:34 PM
#22
Rennlist Member
well this is not a happy situation. Sometimes the machinist will remove the check valve when decking the head to avoid getting debris in it. If it was not reinstalled this would explain the lifter clatter on startup. But to the low pressure problem I can't say for sure. Maybe... since it is a restriction in the oil supply to the head. I would try a different pressure sender to see if it makes a difference. Know that the wires connecting to the sender must be on the correct terminal. If not it will peg the gauge at 5 bar.
10-06-2011, 12:06 AM
#23
Addict
Lifetime Rennlist
Member
Lifetime Rennlist
Member
well this is not a happy situation. Sometimes the machinist will remove the check valve when decking the head to avoid getting debris in it. If it was not reinstalled this would explain the lifter clatter on startup. But to the low pressure problem I can't say for sure. Maybe... since it is a restriction in the oil supply to the head. I would try a different pressure sender to see if it makes a difference. Know that the wires connecting to the sender must be on the correct terminal. If not it will peg the gauge at 5 bar.
10-06-2011, 12:07 AM
#24
Addict
Lifetime Rennlist
Member
Lifetime Rennlist
Member
Also, couldn't a badly leaking AOS cause a serious pressure problem. If the top of it is broken, as mine was, it gave me really low pressure. There was a ton of air leaking out of it.
10-06-2011, 09:15 AM
#26
Team Owner
Join Date: Oct 2009
Location: one thousand, five hundred miles north of Ft. Lauderdale for the summer.
Posts: 28,705
Received 212 Likes
on
153 Posts
that's way too low oil pressure at startup. even for 40 weight oil.
your rod bearings must be considerably worn. at the very least change to a 50 weight oil.
now that it's winter, i would consider mobil 1 5w50 'rally' or 0w50 'racing' oils as they flow very well at cold startup.
your rod bearings must be considerably worn. at the very least change to a 50 weight oil.
now that it's winter, i would consider mobil 1 5w50 'rally' or 0w50 'racing' oils as they flow very well at cold startup.
10-06-2011, 11:51 AM
#27
Rennlist Member
Did you remove the pulleys as part of this job and, if so, are you sure you did not flip one over by mistake?
