Early Ford V-8 Club Forum

EFV-8 Club Forum / General Ford Discussion / LITTLE OR NO OIL IN VALVE CHAMBER

Reply to Discussion | New Discussion << previous || next >>

Posted By Discussion Topic: LITTLE OR NO OIL IN VALVE CHAMBER -- page: 1 2 3     DONALD 09-08-2011 @ 12:52 PM reply profile send p.m. Member Posts: 12 Joined: Jan 2011 Well finally got engine all back togeather and redid the duel exhaust i paid someone to do, i have found out when working on the old cars you are better off to to the work yourself,if possible, fired the engine and it purred like a kitten,really quiet and the knock was gone,,i had no 7 wrist pin bushing replaced and fitted, now i hope to set body on the chassis and enstall the new floorpans. thanks for all the help.DP Bill Wright 09-02-2011 @ 11:45 AM reply profile send p.m. Member Posts: 49 Joined: Oct 2009 Calming down. Too Close for Rockets,switching to Guns!! Thank You. Don't Believe Everything You Think! Bill Wright supereal 09-01-2011 @ 5:00 PM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 These flatheads have lasted for decades with the oil pressure being very low, particularly when hot. The bearing clearances, by modern standards, are very loose. Many early engines, Chevy for example, ran for decades using a "dip"system, rather than full pressure oiling. If you look at modern oil pressure gauges, which are becoming scarce, you seldom see numbers on them, just a range. If you are obsessing over old Ford oil pressure, you need to calm down and enjoy the ride! Bill Wright 09-01-2011 @ 4:05 PM reply profile send p.m. Member Posts: 49 Joined: Oct 2009 Will changing to a "Melling" or High velocity pump improve the oil pressure? Don't Believe Everything You Think! Bill Wright Bill Wright 09-01-2011 @ 2:58 PM reply profile send p.m. Member Posts: 49 Joined: Oct 2009 I have a '39 Merc in my '37. Skat rotating assembly,Harmon Collins cam. At startup I get 50# or more. As it warms up and at 50-60 miles an hour I get maybe 20-25# And nearly nothing at idle. I have an Isspro mech. gauge,I thought was faulty and installed an old Stewart Warner Mech gauge. They mimic the factory dash gauge nearly pound for pound. Are these normal pressures? Straight 40W Castrol? Don't Believe Everything You Think! Bill Wright supereal 09-01-2011 @ 6:00 AM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 In most cases, the oil pump is rated at 40 pounds (later is 80), but the cold pressure is about 30 and drops as engine temperature rises. At idle, the gauge generally shows little or no pressure, but don't worry, there is enough to protect the moving parts. This tends to drive many owners nuts, but the wide clearances of these old engines means that, at most speeds, there is a shower of oil inside to provide enough lubrication. I run 20-50 weight oil in the summer. It helps to keep a bit more pressure if you run at highway speeds. Just sit back and enjoy the ride. If you are still concerned, install a mechanical gauge as an add-on. Bill Wright 08-31-2011 @ 6:39 PM reply profile send p.m. Member Posts: 49 Joined: Oct 2009 So what oil pressure should these engines run. #'s @ Freeway Speed? #'s @ 25-35 MPH? #'s @ Idle? Don't Believe Everything You Think! Bill Wright supereal 08-31-2011 @ 3:01 PM reply profile send p.m. Senior Posts: 6819 Joined: Oct 2009 The clearances are, for exhaust .014 to .016. Intakes .010 to .012. I've been setting valves for over half a century, yet I always seem to manage having a noisy one. I hope your sloppy wrist pin fixes the noise. Wrist pins are usually less noisy than piston slap. Stock 59AB engines have a relief oil valve in the valve chamber. There were two oil pumps used, one with a relief valve in the pump, the other without. The one without the relief has the intake fastened directly to the pump. The other uses an intake on a pipe connected to the pump. Your post started with a concern over a dry valve chamber. Did you ever find out why oil distribution wsa apparently low? It might be wise to replace the pump while you have the engine apart. Most of them now are the 80# variety. This message was edited by supereal on 8-31-11 @ 3:02 PM DONALD 08-31-2011 @ 1:27 PM reply profile send p.m. Member Posts: 12 Joined: Jan 2011 after taking a couple days off,thinking the noise was a valve ,found out my lath was off a little bit,pulled the piston on no 3L ,GUESS WHAT ,THE WRIST PIN HAD quite a bit of slop,took to local machine and had a new bushing fitted,in the process of reassemblying now ,well see if the knock has gone,all the other clearences were on speck,has to be the wrist pin,,, the engine has a oil pump with built in pressure relief.any issues with this along with the pr valve in valve chamber?,this is a 59 ab setting the valve to .012 abd .014 is this ok for a quiet engine? TomO 08-29-2011 @ 9:32 AM reply profile send p.m. Senior Posts: 7264 Joined: Oct 2009 With the floating bearings, you must check the rod to bearing and the rod to crank clearances. You must also check the rod opening for roundness. Give Red Hamilton a call for the procedure and specifications. Tom

<< previous || next >>

PAGE: 1 2 3

NOTE: YOU MUST BE A REGISTERED USER AND BE LOGGED IN TO POST (and reply to) messages in this forum. If you are a first time user, please click the CREATE A NEW ACCOUNT in the masthead above to register and Log In. After that, all you do is LOG IN to enjoy using this site.

DISCLAIMER: The V-8 Club does no independent testing of any of the opinions, thoughts or suggestions presented in the website on the Forum, in the Tech Tips section, or any section. A reader should consider the website to be a forum wherein differing solutions to a particular set of circumstances may be discussed. Ultimately, the selection of an item for an individual's vehicle must be based upon the independent study of the vehicle owner in consultation with people in the hobby and restoration experts.

EFV-8 Club Forum Home | Back to Home Page | Contact the Webmaster

Copyright © 2009 - EFV-8.org
Powered by < CF FORUM > v.2.1