baz-R
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| posted on 9/7/13 at 09:04 PM |
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zetec silvertop oil pressures
Been getting a bit twitchy about my oil pressure.
It's a fresh rebuild with new rings and shells in and cold I'm getting 4+ bar running.
In this very warm weather its been 2bar running and 1 at idle with 5-30 oil
Coolent temps are staying in the 90's
I'm intersted in what most silvertops are running in the way of pressure before I change my electric gauge and so on
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macc man
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| posted on 9/7/13 at 09:15 PM |
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4 Bar is about 58psi. When running hot I get about 75psi. On tickover about 45psi. My engine has done a few miles so some allowance has to be made.
Before you do anything check your gauge and sender it may be reading out.
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big_wasa
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| posted on 10/7/13 at 09:15 AM |
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Mine would go as low as 1.1 bar at 110 deg @ <900rpm
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baz-R
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| posted on 10/7/13 at 10:34 AM |
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I found the spec for ford zetecs 1.6,1.8 fiesta/escort 1993 engine codes to be
1.3-2.5bar at idle (18.8-36.2psi)
3.7-5.5bar at 4000rpm (53.6-79.7psi)
Intersting thing is I also see pre july 1998 is shows 5w/30, 5w/40, 5w/50 and 10w/40
After july1998 its fully synth 5w/30 ford spec only
Im going to swap over to a mech type pressure gauge and see what I get
Air temps are nearly 30deg c here at the mo mind
Im also running a bit less oil as I have a shortend sump but the way I see it is no matter how much oil you have I will only heat up quicker the less
you have within reason.
It might be worth me upping my hot grade a little to help in all this hot wether.
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baz-R
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| posted on 10/7/13 at 04:52 PM |
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i have 25psi (1.7bar) at idle with my new mech gauge and oil pressure reg can be seen liftting at 42psi(2.89) around 3200 rpm i wounder if the
orignal spring is just old? as i reused the pump as it had minimal ware in it
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baz-R
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| posted on 11/7/13 at 08:42 AM |
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had a mate go into his autodata and they say the earliest zetecs should have 2.8bar (40.6psi) @2000 rpm and later ones are what i put above
looks like it changed around the same time as the oil grade change (sticky valve mod)
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