oil pressure regulators??
06-05-12, 11:01 PM
#1
35r 13b first gen
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oil pressure regulators??
I had previusly modified my oil pressure regulators in my 85 12a motor.. i crushed one and shimmed the other... i got a new (different) motor. 87 TII 4 port.... i put the 12a regulators in it... is this acceptable? whats my best option... its going to be running a 35r on a raceport and about 20-25 psi...
06-05-12, 11:44 PM
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Usually shoot for 100-120psi on our street motors and 140-160 on the race cars.
What was the pressure before with that regualtor? It'll prob be a tad but lower now due to the diff in oil cooling system.
What was the pressure before with that regualtor? It'll prob be a tad but lower now due to the diff in oil cooling system.
06-05-12, 11:46 PM
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Eye In The Sky
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Get the FD regulator which gives about 110 psi, and also place a couple thin washer spacers in the front/safety regulator.
Then rework the oil pump scavenge area in the front side housing for better oil flow.
Then rework the oil pump scavenge area in the front side housing for better oil flow.
06-11-12, 06:52 PM
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35r 13b first gen
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what are the first gen regulators rated at? and with one crushed and one with two washers shimmed in it? I have the first gen everything on it... i just plugged most of the other oil passages in the block... is that ok?
06-11-12, 10:59 PM
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the FD part list price is like $28 too, so its cheap!
06-14-12, 10:13 PM
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I have a turbo 2 motor with a raceport.. gt35r and will be running 20-25 psi... will i need more oil pressure than 80 - 90? it is an Fc engine...
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06-15-12, 11:32 AM
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one of the key updates that Mazda did going from the FC engine to the FD was to bump the oil pressure to the same level as the racing engines. so you should too.
06-19-12, 05:55 PM
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Wont the 80-90 psi be better than the stock FC? I know that 110 would be ideal but will 80-90 be ok. I will be only running about 15 psi this year and about 350 rwhp since i need more fuel...
06-20-12, 10:53 AM
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Mazda ran 110psi on everything over 250hp...
06-22-12, 05:54 PM
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35r 13b first gen
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you are doing both front an rear right? i smashed one and shimmed the other like previously told... this is the first ive heard of have to have over 100 psi...
06-23-12, 01:24 AM
#18
I won't be going that high. I'm thinking 90psi, maybe 95. I've got an old school oil cooler and hoses here.
I'd rather pay attention to things like the oil cavity where the oil pump sits, and the other sharp edges along the oil's path. A little smoothing here goes a long way when it gets there.
And I won't add any washers to the front reg. Why? It already is set to like 140psi. I just look for the tallest spring in the collection and throw it in. I try to not be pretentious about this stuff.
I'd rather pay attention to things like the oil cavity where the oil pump sits, and the other sharp edges along the oil's path. A little smoothing here goes a long way when it gets there.
And I won't add any washers to the front reg. Why? It already is set to like 140psi. I just look for the tallest spring in the collection and throw it in. I try to not be pretentious about this stuff.
06-29-12, 09:53 AM
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Imm using the fd rear reg, shimmed the front, and still idle oil pressure is at 40psi, revving the car it stays put. What am I missing here? I gotta have this sorted since I will be driving to Dallas next week for tuning.
06-29-12, 11:30 AM
#20
Something is definitely wrong, even the stock regulator should increase pressure when you rev it. Is the oil pressure sender hooked up correctly ? what about the oil level? I hope its not the case, but that front cover o-ring has been known to cause oil pressure problems...
06-29-12, 12:14 PM
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rotorican85
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I thought about the front cover o-ring, but i was meticulous when assembling it since i knew i would be pushing this motor. I got a cheap oil pressure gauge im gonna hook up to see if its not the dash gauge itself. Gonna try a different sending unit as well. Any other tips are appreciated and can benefit the thread!!
06-29-12, 01:18 PM
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rotorican85
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Front cover is 85 13B, s6 irons. Using teflon ring and gasket. Used same setup and had flawless pressure, 65avg at idle and 110 at 12 psi WOT (street tune).
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