Oil pump ? for the B series gods...
 

I'm getting ready to put my non-tec together...b16a bottom with the LS head for now...and i'm having an issue. I've been having a hard time trying to get a b16 oil pump (the block only has the rotating assembly on it), and Honda themselves want a monster nut for a new pump. I still have my LS oil pump that will fit on, but would it even be worth it? I used to do a couple of spring change tricks with my old D-series oil pumps that up the oil psi, but I don't know if the volume would be upped as well. This motor in it's current setup will never see over 7800 rpm due to the head, so should i just keep hunting for the b16 pump or just re-adjust the LS pump instead?

Re: Oil pump ? for the B series gods...
 

i have a gsr oil pump with about 12K mile son it for 20 bux +ship if you want it homey


the LS pump is just not adequit enough to give proper oiling, hence the main reason for so many spun rod bearings

Re: Oil pump ? for the B series gods...
 

so when you guys do these ------ b16/ls combos, do you block the port in the block or just say ---- it and hope the head/gasket will be fine? I would think some oil seapage would happen on the oil feed corner (for vtec)

Re: Oil pump ? for the B series gods...
 

I have done it jeff. Just drill the hole out and use a nice sized plug in the block. I think it was a 5/16 plug when i did it. or a 3/8

Re: Oil pump ? for the B series gods...
 

I'm pretty sure it's a 5/16" plug. 3/8" is too small. That's the only part of the block that the LS HG doesn't cover.Lemme do some more searching, but i'll probably take you up on that. A stock LS bottom with a vtec head i know can't handle the extra oiling needs, but it's not gonna have a vtec head on it just yet. But still...y change the pump twice :-\

Re: Oil pump ? for the B series gods...
 

Not true...its because the rod bolts are weak they strecth and bam you got yourself a spun bearing...look at the torque specs between b18a/b and all other b's different metals dont ask why honda did it but put some arp rod bolts in it and its all better....and so everyone knows there is only 2 differences between b16 b18 all b oil pumps...the srping rate is different..and also on ls's there is a shim that lowers the springs rates.... so go get a nwe b16 spring put it together without your ls shim and wala... you got yourself the almighty type r oil pump everyone pays top dollar for ::) have a nice day ;D

Re: Oil pump ? for the B series gods...
 

Good information to know! Thanks for that.

Um... 5/16" is smaller than 3/8", just to let you know. The head needs to be tapped with a 1/8 pipe-thread tap, then have a plug inserted.

Re: Oil pump ? for the B series gods...
 

do the pump now. or in a few weeks when you spin bearings you'll wish you did.

Re: Oil pump ? for the B series gods...
 

See that's the info i'm talkin about ;D I used to change spring rates in the d-series oil pumps to jump up the pressure (i like to have at least 20psi per 1000 rpm, even though 10 is minimum required), and it seems that nobody really does this to b-series pumps for some reason. Of course, i don't think anyone even messes with the d-series pumps anymore for that matter :l Oh, and so you guys know, the spring is located inside the tube on the pump with the large plug on the end...i know that question will eventually pop up.

Re: Oil pump ? for the B series gods...
 

you got pics of this? the shim in the ls pump? I've had one apart and dont recal a shim in there? If this is the case thats definatly pretty cool, I couldnt imagne all these b-series oil pumps being that much diffrent.

Re: Oil pump ? for the B series gods...
 

Ok, so far this is what i've dug up...took my LS pump apart and compared it to a gsr pump my friend had...the spring is the only difference between the 2 pumps. I didn't really see a spacer on the LS pump, only a metal ring to seal the plug in. Maybe the b18b's have the spacer to up the psi a little, but the b18a1 didn't have one. Actually, by the way it's designed, if you add a spacer to the spring, it should increase the spring tension and therefore make it put out a higher psi before it opens the valve. From what i can see of the design, think "granger valve" mbc design. Supposedly though according to my friend and his fellow honda hoodlums, the real deal type-r pump has not only the increased spring rate, but an increased volume as well.

Re: Oil pump ? for the B series gods...
 

The shim should've been in the VTEC oil pumps. The shim raises oil pressure.

Re: Oil pump ? for the B series gods...
 

Umm...where do you see anything about vtec oil pumps having shims? I think he meant the oil seal ring. And why would they add a shim when all they do is make a different rate spring? We're saying add a shim to the LS pumps to raise up psi.

Re: Oil pump ? for the B series gods...
 

Someone mearly stated that the LS oil pump had a shim in it. I meant that if the spring rates were the same, then the vtec oil pumps would have the shim to raise oil pressure. I've seen people add shims to VTEC oil pumps to raise pressure as well.

Re: Oil pump ? for the B series gods...
 

Ok...i gotcha. I think he meant the retaining bolt was shimmed down, therefore putting less pressure on the spring than if it was removed.

Re: Oil pump ? for the B series gods...
 

oh for anybody who did't know 96+ plus b18's have a higher flow rate. it is the same as the vtec b's basicly any obd2 b seris pump is the all the same. look at the part numbers.

Re: Oil pump ? for the B series gods...
 

^^ damn i was about to mention that. and yes all 96+ b series pumps are the same. including b20's.

Re: Oil pump ? for the B series gods...
 

Uh, no. :l

A broken rod bolt manifests differently from a spun bearing. Sometimes you get a little stretch (before breaking) that causes the edges of the bearing shells to dip inward and grab the crank + spin, but in that case you'd also see a good number of broken LS rod bolts accompanied by good bearing halves hanging out in the oil pan. You don't.

The different torque specs are due to different size rod bolts. Welcome to metallurgy.

I've seen a couple of early ECHC engines, B20B/Z, with stock LS rod bolts revving to 8500 daily, making good power, over 50K miles on engine beaten on by late teens/early 20-somethings with no restraint. Most had shimmed, or VTEC, oil pumps.

See where I'm going with this?

Re: Oil pump ? for the B series gods...
 

Sorry i didnt reply was busy. But yeah the ls pump has a shime in-between the allen bolt and the pump itself so that there is more spring travel ,hence a lower spring rate and less oil pressure. That is the reason it isnt adequent enought for vtec engines. No, from what all i seen all the spring part numbers for all b series pumps are they same. its just the washer thing in between the allen screw/bolt thing

http://www.team-integra.net/forum/di...g+Common+Topic

That will clear it all up enough guys and sorry for all those who kicked out the seroius cash for the TYPE R oil pump :/