Author Topic: 85 22re oil pressure (Read 19638 times)

peacesells · « **on:** Jan 19, 2009, 11:44:09 PM »

I put a mechanical oil pressure gauge on my 85 runner, cold It had 30lbs or so at idle, 9-14 hot idle(700-750rpm), 45-50lbs or so at 2500rpm running 10-30 castrol syntec. Compared to all the hot rod motors ive built this is rediculously weak, Im used to minimum 30lbs at idle hot. Ive heard toyota says minimum accaptable is 4lbs at hot idle.

Anyways, I put a new engnbldr oil pump on, now im lookin at 60lbs cold idle and 18lbs at hot idle, but I have 70lbs at 2000rpm and 70 pounds at 3500 rpm. I know the rule to thumb (10lbs per 1000rpm) but 70 pounds is in danger of washing out a bearing at 2000rpm.. Seen it many a time at the hotrod shop I used to work at. I also noticed a good 5 hp loss due to the extra strain on the motor.

My question would be what kind of oil pressure are you guys at on a decent quality mechanical gauge running 10w-30?

Also, are any of you guys running one of these nifty lc adjuster deals?
http://www.toyotacatalog.net/M1WebGear/ProductDetails.aspx?PartUniqueID=718AA3E9-32A7-4084-BC72-1683F2407782

If so, does it adjust the peak oil pressure and not the idle oil pressure, or all around pressure? Might be just what im lookin for as it seems the relief spring in my new pump is a 70 pounder.

brainlessfool · « **Reply #1 on:** Jan 21, 2009, 08:21:47 PM »

I have 70 cold max. 35-40 hot idle.

don't have that ajust a plug thing butt would think it would just lower peak presser.

93tonkatoy · « **Reply #2 on:** Jan 21, 2009, 10:02:26 PM »

What do you mean by "wash out a bearing"? Either the bearing is getting oil, or it isn't. Please educate me, cause I've never heard this term before.

peacesells · « **Reply #3 on:** Jan 22, 2009, 01:13:05 AM »

Excessive oil pressure can literally blow out a bearing. looks similar to an overloading failure if caught early, causes spun bearings if not caught early. Its common on chevy sb cam bearings with 80+ pounds of oil pressure. It would happen several times a year on sprint car motors when the driver decided not to let the car warm up before turning 7500rpm. We had a few motors come in with wash outs when people would put a high pressure oil pump in thinking the more pressure the better.

Gary Briggs · « **Reply #4 on:** Jan 25, 2009, 10:42:57 PM »

35 psi at hot idle, 65 psi at 3000 rpm, running 5w30 syn on an 85 22r

DanS · « **Reply #5 on:** Jan 27, 2009, 05:39:47 PM »

I've installed one of those LCEngineering 'Hi-Volume' oil pumps on my 22RE to help the engine cooler and remote filter maintain pressure rates, these pumps come recommending an 'adjustable' bypass valve to keep from blowing seals.
Hope it helps, DanS

SolidAxle · « **Reply #6 on:** Feb 04, 2009, 03:59:06 PM »

I have the same high oil pressure thing on my rebuild, I put in a mechanical guage (autometer). some of my seals ooze, i buttoned up some that needed replacing anyways, but that valve seems like a good idea if this bearing wash thing is true, I only have 9k km on my motor at the moment. so I think i will get one of those valves and play with it. BTW mine is a stock replacement oil pump. I'll report back if i follow through in the spring.

peacesells · « **Reply #7 on:** Feb 07, 2009, 12:05:34 AM »

I had my fuel injectors cleaned and changed my oil (still syntec 10-30) and my hot idle pressure is now 18-20lbs. Im guessing due to how much smoother the motor runs.. Im going to order one of those valves once I get around to it, let me know how it is if you get one first

SolidAxle · « **Reply #8 on:** Feb 07, 2009, 07:15:44 AM »

Quote from: peacesells63 on Feb 07, 2009, 12:05:34 AM

I had my fuel injectors cleaned and changed my oil (still syntec 10-30) and my hot idle pressure is now 18-20lbs. Im guessing due to how much smoother the motor runs.. Im going to order one of those valves once I get around to it, let me know how it is if you get one first

I also run synthetic and my injectors have been cleaned and balanced also. NP i'll let you know what i notice when i do it in the spring. I asked for it for my birthday which is the end of april. so lol i'll probably post up that day.

89YOTA P/U · « **Reply #9 on:** Feb 07, 2009, 07:55:39 AM »

Run 30 weight all that other oil is way to thin.

SolidAxle · « **Reply #10 on:** Feb 07, 2009, 08:05:32 AM »

you mean straight 30 weight, or like a 10w30 etc.

89YOTA P/U · « **Reply #11 on:** Feb 07, 2009, 09:10:17 AM »

Stright 30w Bro my buddys a mechanic and he said all that other oil is way to thin your motor will last alot longer with that thicker oil in it.

SolidAxle · « **Reply #12 on:** Feb 07, 2009, 11:21:26 AM »

The only time 30 weight is thicker that 10w30 is at startup when the engine is cold. At this tempurature 30 weight is quite thick and you'd want a thinner oil.thats where multi grade oil comes in. are you saying that a 30weight is better at cold startup.

kneedownnate · « **Reply #13 on:** Feb 07, 2009, 08:46:31 PM »

My current 22r has over 217,000 miles and near stock compression, and the last on in the 4by had around 370,000 miles before a bearing failed (bad head allowed coolant to mix with the oil), and both only ever got multi weight oil. Opinions are like buttholes...

89YOTA P/U · « **Reply #14 on:** Feb 07, 2009, 09:39:21 PM »

just run straight 30w u wont regret it

93tonkatoy · « **Reply #15 on:** Feb 07, 2009, 10:31:41 PM »

First, a SB chevy race motor is a high-revving engine. A 22r(-e) is not. It is a low-rpm work engine. If you turn 7500 rpm's with one you're going to do more than wash a bearing out.

Second, once the oil pressure maxes out, that's it. the rest goes DIRECTLY back into the oil pan. Once the relief valve starts opening, you will get no considerable increase in pressure past that point.

Third, I would really like to see a non-existant cam bearing get "washed out". 22r(-e) heads do not use bearings on the cam journals, and since the head side is what all of the valvetrain pressure is against, and where the oil is supplied to the journal, maximum pressure early in the rpm range would be good (to create a hydraulic "cushion" for the cam to float on).

Last, the compression that the rod bearings are under (inside the rod, properly torqued) make spinning a bearing from 70 psi oil pressure unlikely. The only rod bearings I have heard of spinning was from a loss of oil pressure, and galling the bearing surface to the point that it tries to weld itself to the crank, spinning inside the rod. If it is continually run, the outside of the bearing will gall, and try to weld itself to the rod, at which point, the rod goes through the side of the block.

As far as your original question, I don't think you have anything to worry about. The FSM gives a minimum of 4.3 psi at idle (no maximum) and 36 - 71 psi at 3000 rpm. That should be the relief point for the bypass valve. As the oil pump wears, and the bearings wear, it will reduce this pressure. Also, all of the oil that is used in the bearings is first forced through the filter, reducing the final supply pressure. The 22r reads the pressure before the filter. So, if your filter is totally clogged, you may have a good pressure reading, but be supplying no oil to your engine (unless the filter has a by-pass valve in it).

SolidAxle · « **Reply #16 on:** Feb 08, 2009, 07:24:04 AM »

Quote from: 93tonkatoy on Feb 07, 2009, 10:31:41 PM

blahblah blah blah

Thanks for the info man. I remember looking in my fsm a while ago and could only find where the oil pressure is normal on the factory guage no real numbers. I guess i was looking in the wrong spot. I think I'm still going to try this valve to bring the pressure down a little bit though. gotta tinker with somthing lol. I'll stick to the 10w30

unclejpl4x4 · « **Reply #17 on:** Feb 08, 2009, 08:16:09 AM »

after me rebiuld
LC pump I was seeing 60-100psi and i had a knock mobli 10-30 oil

took out the LC pump for the engbiulder pump from the kit.
cold idle 60 psi
warm temp 40 psi idle 65 psi at 3000+ rpms

still had a cold knock kicked mobie 2 the curb and it went away.

I have not check it latly now that i got 15,000 miles + on the moter

79coyotefrg · « **Reply #18 on:** Feb 08, 2009, 10:04:29 AM »

Castrol 10w40 in the winter, 35psi hot, 75 psi cold
in the summer in 100* heat i run castrol 20w50 same pressures

30w is for air cooled engines

kneedownnate · « **Reply #19 on:** Feb 08, 2009, 10:47:47 AM »

Quote from: unclejpl4x4 on Feb 08, 2009, 08:16:09 AM

after me rebiuld
LC pump I was seeing 60-100psi and i had a knock mobli 10-30 oil

Do you mean a little excess valve noise for a few seconds on startup? My 91 has always done that, as have most my 4 stroke motorcycles, but it lasts a second or two and is gone as soon as there's oil pressure. What oil do you use now?

unclejpl4x4 · « **Reply #20 on:** Feb 08, 2009, 10:59:45 AM »

No it was knock lasted 30-60 secs and still there quietly till the truck warmed up. ( note: weather was 20-30)

I switched 2 royal purple, for 3-4 oil changes then the price jumped to $9.XX a quart. so i change the oil last week with mobie 1 i had in the shed that was already paid for. guess what the cold knock came back.

im in the market for a new oil.

89YOTA P/U · « **Reply #21 on:** Feb 08, 2009, 07:08:32 PM »

My friends a mechanic and has been for 20 years he has plenty of toyotas and he always recommends straight 30 weight oil to me

Edited by BigMike: This is how you should post on this BBS. Thanks

Steve_925 · « **Reply #22 on:** Feb 08, 2009, 07:49:35 PM »

try running 30w in 20 below. you need a mixed viscocity oil for cold start ups.

Rockcrawlintoy · « **Reply #23 on:** Feb 08, 2009, 09:02:03 PM »

Quote from: 89YOTA P/U on Feb 07, 2009, 09:39:21 PM

just run straight 30w u wont regret it

im sure i will when i try and start up at 6 below. the 30 weight will be way too thick

Brandon · « **Reply #24 on:** Feb 08, 2009, 09:03:42 PM »

Do I need to get the whip out ?

BigMike · « **Reply #25 on:** Feb 08, 2009, 09:40:25 PM »

SLIVER · « **Reply #26 on:** Feb 08, 2009, 09:49:48 PM »

Big Mike, your avatar is freaking me out man!!!!!!!!!!!!!!!!!!!!!!!!

))--SLIVER-->

peacesells [OP]

peacesells [OP]

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