low oil pressure?
- Thread starter mk3sons
- Start date
Yes, quite normal for the 7M to have low oil pressure as it uses a high volume, low pressure system.
A search would have turned up plenty of results, but the search police don't live here
At idle it should be no lower than 4.3psi, and at 3,000rpm you look to be below spec, which is 36-71psi, but the stock gauges are only a reference and aren't exactly "accurate".
I'd suggest putting a real oil pressure gauge on it and finding out for sure.
HERE IS THE LINK to the tsrm engine lubrication section.
A search would have turned up plenty of results, but the search police don't live here
At idle it should be no lower than 4.3psi, and at 3,000rpm you look to be below spec, which is 36-71psi, but the stock gauges are only a reference and aren't exactly "accurate".
I'd suggest putting a real oil pressure gauge on it and finding out for sure.
HERE IS THE LINK to the tsrm engine lubrication section.
I would use a oil pressure gauge to know exactly what it is. Stock gauges can give you false readings sometimes.
im not that much of a dumb ass... i will try to find a gauge but if this gauge is accurate should i not drive it until i figure out what it is?TomFraser;1520122 said:
Get real oil pressure tester gauge. You can rent them at kragen i believe. You unscrew the oil pressure sensor on the block and fit the gauge to there and then get the readings.
And dont drive untill you know what it it for sure.
And dont drive untill you know what it it for sure.
hvyman;1520138 said:
OK i will do that asap. i am gonna be unhappy if it has anything to do with engine internals since i just payed 3000 for an rebuild and im already a little unhappy with the turnout.
mk3sons;1520107 said:
Is that a good witch, or a bad witch?
TomFraser;1520122 said:
As stated - depends on gauge accuracy. A direct mechanical gauge hooked up at the stock location will tell the tale.
mk3sons;1520160 said:
You know, the TSRM is a wonderful thing - Might want to start using it:
http://www.cygnusx1.net/supra/Library/TSRM/MK3/manual.aspx?Section=LU&P=4
I would be more concerned with pressure at 3000 RPM. As a rule of thumb, you should also get ~10 psi increase in pressure per 1000 RPM. Pressures over 40 psi are limited (hot) by the cooler relief valve and oil squirter's...in fact, a stuck open cooler relief valve will show exactly as yours does at hot idle. Oil viscosity will have an impact - What brand/grade are you using? And, did you break-in the engine?
jdub;1520216 said:
i literally loled at your first comment. i am using Pennzoil 5w-30 (i think that's the grade?). I did the hard break in i read about on this site with the high vacuum pulls and oil changes every 12 feet. I will try to see what i can do about the relief valve. would you recommend i get a new one?
Check with a mechanical gauge to eliminate your stock gauge's resolution as a factor. Check at idle and 3000 RPM per the TSRM. Compare against the stock gauge readings.
Is that Pennzoil Platinum?
Is that Pennzoil Platinum?
jdub;1520225 said:
i have no idea i don't think so, i threw the jug away already all i know is that it was big and yellow and 5w-30. I guess I'll begin my search for a pressure gauge tomorrow.
edit: not platinum
another edit: thanks for all the help jdub and others. will this work? http://shop.advanceautoparts.com/we...e-Gauge-Actron_9030005-P_N3342C_P|GRP2032____
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thats an aftermarket gauge.
http://matcotools.com/Catalog/toolcatalog.jsp?cattype=T&cat=2125&page=15��
you want something like at the bottom of that page. it looks like a compression tester but for oil.
http://matcotools.com/Catalog/toolcatalog.jsp?cattype=T&cat=2125&page=15��
you want something like at the bottom of that page. it looks like a compression tester but for oil.
hvyman;1520238 said:thats an aftermarket gauge.
http://matcotools.com/Catalog/toolcatalog.jsp?cattype=T&cat=2125&page=15��
you want something like at the bottom of that page. it looks like a compression tester but for oil.
whats the difference? other than price and i could put the other one in m car!
One is a tester and can be used on all cars and the other is just a very cheap gauge(also can be used on all cars) and at 18$ i would not trust.
You can rent the tester usually from kragen or something and find out what your oil pressure is. Maybe its the gauge, bearing clearances, relief valve. properly diagnosing thing and throwing parts are 2 different things. Its always good to get a nice accurate oil pressure gauge but that is not one of those.
You can rent the tester usually from kragen or something and find out what your oil pressure is. Maybe its the gauge, bearing clearances, relief valve. properly diagnosing thing and throwing parts are 2 different things. Its always good to get a nice accurate oil pressure gauge but that is not one of those.
hvyman;1520261 said:
ooh ok that was just the first one i found and it looked like it would work. I don't know what a kragens is but i think auto zone rents tools so ill take a ride over there. thanks for the help.
kragen, schucks, and checker are all the same. dik if you get it around your area but its like auto zone.
mk3sons;1520135 said:
seriously?
use the stocker for trends, mine read similar to yours when i finally pulled it out. Actual psi was in the 50's though..
No you dont have to drain the oil. Make sure you have a 1/8NPT to 1/8BSPT thread adapter if your gauge is 1/8NPT like most of them are. Sometimes you can get the NPT to thread in, but i was not able to get a gauge into my block until i got the adapter.
CyFi6;1520717 said:
OK thanks good! could i get an adapter at like home depot or something?
edit: more of make an adapter out of fittings?