No oil pressure after sitting
#21
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Debris can screw with any hydraulic relief valve.
My dipstick handle plastic melted and bits of molten plastic went down the dipstick tube into the oil. Small bits of plastic held my relief open. My lesson was to heatshield all the things. I run a rubber cap on the dipstick tube on the track and only put the dipstick in to check the oil now.
My dipstick handle plastic melted and bits of molten plastic went down the dipstick tube into the oil. Small bits of plastic held my relief open. My lesson was to heatshield all the things. I run a rubber cap on the dipstick tube on the track and only put the dipstick in to check the oil now.
#22
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Well given it appears his boundary pump is malfunctioning, I wouldn't recommend replacing it with another boundary pump. I was recommending he throw it away, and use a stock (and not modified by anyone) OEM pump. His car, his choice. Maybe he has a ton of miles/use on the pump and it's just wore out? I dunno.
#23
A couple of years ago a local guy put his car on the trailer after a track day running fine. Then started it up to take it off the trailer and had zero oil pressure. Oil pump valve plunger was stuck. 1.6 lost all oil pressure while on trailer - Spec Miata Garage - Mazda Racers
#25
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Turns out the pickup tube bolts backed out. I guess the machine shop I used didn't torque them correctly, leading to some carnage in the oil pan.
Surprisingly this didn't knock, both my oem gauge and stack oil pressure gauge showed good oil pressure right up until I started it after it sat for awhile. Main bearings look fine, but all the rod bearings are trash and the crank has a few score marks.
Surprisingly this didn't knock, both my oem gauge and stack oil pressure gauge showed good oil pressure right up until I started it after it sat for awhile. Main bearings look fine, but all the rod bearings are trash and the crank has a few score marks.
#29
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If you ask nicely and are willing to be a little patient, Travis will R&R one of his pumps after a motor failure for a very reasonable amount of money (less than the cost of a new OEM pump).
#30
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Waiting to hear back from the machine shop. Motor's like 2 1/2 years old, probably done less than 5k miles, though so we'll see what they say.
Unfortunately the shop got sold to the previous owner's friend about a year after my engine was built...so I'm not getting my hopes up.
I'll definitely look into getting the pump r&r'd, but probably just going to throw a vvt motor in the car for now.
Unfortunately the shop got sold to the previous owner's friend about a year after my engine was built...so I'm not getting my hopes up.
I'll definitely look into getting the pump r&r'd, but probably just going to throw a vvt motor in the car for now.