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I Did A Engine Change In My R33 & Now It Wont Go

mattsr31

By mattsr31,
in Engines & Forced Induction

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NUTSGTR Enthusiast

NUTSGTR

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ok for one ur oil pump is driving off the crank so its gotta be spining atleast. did u put ur sump or ur oil pump on this new engine etc just double checking cuz if the pick up isnt bolted up properly its probably just gettin air instead of oil... seen if happen b4. with careless nitwits. and for one if the top end is noisy on start up and its a new engine out of a halfcut etc its gonna be noisy due to the fact of if its an rb25 it will have hydraulic lifters which may not be fully pumped up yet... start it give it time to get all the oil flowing etc. unless u really dont know wat certain sounds would be etc dont start it and get a mechanic to come listen when u start it. just a few ideas

Sorry didn't see this 1. These are some good ideas too

NUTSGTR Enthusiast

NUTSGTR

Posted
Posted

get hold of a mechanical gauge (even a cheap ass supercheap 1) remove the original sender and tap your mechanical sender line into the hole. Also you can check to see if there's plenty of oil splashing round up top by looking in you oil filler hole when engines runging but unless you know whats normal you probly wont be able to tell as there could still be some residual oil flicking around in there

mattsr31 Proficient

mattsr31

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if the block was getting air in it from say a crack behind a bolt so not much but would it suck air into the block and some how stop oil from flowing. so dose the block area have to be pressureised to pump oil

NUTSGTR Enthusiast

NUTSGTR

Posted
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no the block doesn't have to be pressurised, the pump simply has oil supplied by the pickup, the pump then moves the oil about the engine and backpressure is created by the tight clearances on the various bearing surfaces and oil journals throughout the engine. The only point an air leak would affect this is if, as skylinekid mentioned, there was a leak before the pump (aka somewhere in the pickup area). Reasons oil pressure can drop are excessive wear in the clearences i mentioned before (main and bigend bearings, cam bearings etc). But there still should be flow to the top end and at least some reading on your op guage.

Beer Baron Grand Master

Beer Baron

Posted
Posted

get an oil pressure gauge. turn the engine over by hand until you see some oil pressure. if you get nothing stop what you are doing and consult someone who knows what they are doing.

in fact, just consult someone who knows what they are doing now. it sounds to me like you are on the verge of loosing this engine. if you want to save it pay a mechanic to come and help you. or even better just tow it to a workshop. :P

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