Preferred bearing clearance and oil pump question
I am rebuilding my 94' for a turbo and I have a question about bearing clearance. I have heard a lot of things but wanted to ask about the relationship between bearing clearance and oil pressure. It is my understanding that boosted/high power cars would prefer slightly larger clearance than stock especially on a tracked car due to higher temperatures/ loads of a boosted or more powerful car. My goals for this build are mostly street, but i would like the opportunity to take it to a track and not be concerned about it blowing up at sustained rpms occasionally. This is my first full engine build and i kind of just dove into it. I am about 1 year in. Taking it very slow and lots of research along the way.
I will be replacing the internals with forged components, ACL bearings, ARP hardware, st valve springs etc etc.. looking to make just north of 300whp with a little bit of head room. I was not planning on doing any head work like porting yet. I don't have a turbo kit picked out but i like the kraken top mount with the EFR 6258.
So with my goals in mind, mostly street with the occasional track run (Note that it will see sustained-ish rpms but i wouldn't beat on it at redline, more like 5-6k maybe), any recommendations for bearing clearances? I will not be using oil squirters so i want to know if the vvt high flow boundary pump is worth it or necessary to maintain adequate oil pressure using larger bearing clearances, or if i should just go with a stage 1. Should i even run larger clearances on a mostly street car? I know oil weight probably will affect this too. Any input is appreciated because I am not adequately knowledgeable or experienced on this topic.
I will be replacing the internals with forged components, ACL bearings, ARP hardware, st valve springs etc etc.. looking to make just north of 300whp with a little bit of head room. I was not planning on doing any head work like porting yet. I don't have a turbo kit picked out but i like the kraken top mount with the EFR 6258.
So with my goals in mind, mostly street with the occasional track run (Note that it will see sustained-ish rpms but i wouldn't beat on it at redline, more like 5-6k maybe), any recommendations for bearing clearances? I will not be using oil squirters so i want to know if the vvt high flow boundary pump is worth it or necessary to maintain adequate oil pressure using larger bearing clearances, or if i should just go with a stage 1. Should i even run larger clearances on a mostly street car? I know oil weight probably will affect this too. Any input is appreciated because I am not adequately knowledgeable or experienced on this topic.
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