theczechone Posted June 15, 2015 Share Posted June 15, 2015 Hi, I am getting really close to first fire on my RB25det swap, but I'm worried about priming the oil system. The engine hasn't run for quite some time so having a fresh coat of oil in all the right places would be great. I have searched on here in regards to the topic and the basic answer I found is, disconnect the fuel injector harness and just turn the engine over with the starter to build up the oil pressure. Would this, low speed turning of the pump be enough to generate enough pressure to supply the whole system? Is there another option? I heard of using an Accusump, but not sure how to integrate it into the oil system. Thanks, Quote Link to comment Share on other sites More sharing options...
Wedge Posted June 15, 2015 Share Posted June 15, 2015 Just check google new engine oil prime and you will get a general idea. My 2 cents. Quote Link to comment Share on other sites More sharing options...
mtnickel Posted June 15, 2015 Share Posted June 15, 2015 I'd say you'd be fine with just turning the engine over with the fuel injector harness disconnected. However, I've read it is recommended to pull all the spark plugs as well. This allows the engine to both rotate at a faster speed, but also reduces the load greatly on all the bearings (main bearings, rod, and piston pin). That way they don't "wipe" and rub metal on metal. But as also suggested, can google to give yourself a better idea. Regards,Mark Quote Link to comment Share on other sites More sharing options...
theczechone Posted June 16, 2015 Author Share Posted June 16, 2015 Thanks guys, taking out the spark plugs would definitely help in reducing the load on the bearings. I am familiar with the most common ways. When you google you find things like "spin the distributor shaft with a drill" which is not applicable and "turn the engine over until you see pressure build up". I guess I was maybe looking to see what other people have done with their RBs to prime the system. Quote Link to comment Share on other sites More sharing options...
ZT-R Posted June 16, 2015 Share Posted June 16, 2015 I rigged up a hand pump on my oil filter housing. then i backfilled though the turbo port, not sure if it did any good or not but do spin it with no plugs and injectors turned off or disconnected. Quote Link to comment Share on other sites More sharing options...
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