I have a 1g B16a block that is going to the machine shop for darton iron sleeves.
The bore will be 84mm and i'll be running forged pistons and rods.
This will be a turbo motor in the range of 300-400whp.
I've heard some talk as to whether one should remove and plug up the oil squirters to give an increase in oil pressure.
I have a B16a head with GSR internals, so i'll only be revving to MAYBE 8200 rpm.
There will be an ITR oil pump feeding the engine.

So should I keep my oil squirters, or remove them?

Any help/opinions would be greatly appreciated.

 

I kept mine...Supposedly they help lubricate the wristpin and piston walls while also cooling the piston.
Then some people say you dont need them with forged pistons cause they shed heat well enough...
And some say the extra oil adds extra weight to the piston making it heavier and robbing power...
I think its a good idea to keep them because...

1) a little extra lubrication is always good.
2)VTEC blocks have them and LS/B20's dont.(honda must have thought they were a good idea).
3)Extra insurance in cooling the piston to avoid detonation.

They're there for a reason whatever it may be. I dont think youll lose any oil pressure,if you do I think it would be very slight.

 

if ur running forged pistons you don't need them, taking them out will increase oil pressure

 

Thats a good point regarding detonation. Nobody wants that.

So the final question is:

Is it more beneficial to have a little higher oil pressure, or to have oil squirted on the bottom of the pistons?

 

any other opinions/first hand experience?

 

We just about always plug them off on our high boost turbo motors. Scott and I normally leave the option to go back by simply pulling out the oil squirter, cutting the jet off, and TIGing the end shut. Honda put them in since they were working with factory cast pistons but just as PrettyLude said forged deal with heat a lot better and really don't need them. With them in place the constant jet of oil on the bottom side of the piston just throws off your rotational assemblies balance that much more (really isn't a huge deal tho).

 

any other opinions?

 

eh.....if you have them in there already just leave them.....wont hurt with or without them..

if you need more oil pressure there are other ways of increasing it other than removing those squirters........

p.s. why are you building a turbo motor with stock GSR internals? atleast pick up a set of eagle rods to go with your forged pistons........

 

gsr internals in the head...
i.e. cams/springs/retainers etc...
the bottom end will be bulletproof.

 

Nothing is bulletproof... I would at the bare minimum atleast toss some valve springs in there too. Stock will handle 8-9K rpm with atmospheric pressure on them but they're not intended for boost on top of high revs. Why float a valve into your good bottom end?

 

I agree about the head. At the very least use the ITR/ aftermarket setup. I am not too sure which to use as far as outer and inner springs. I have heard of this setup being good for 9k RPM. As far as the squirters are concerned, Honda put them there for 100,000 mile engine life. I have yet to see a 400 hp Honda motor last THAT long. If there is someone who does have that many miles on a powerful engine, I would LOVE to see that!

 

why would I rev any higher than the gsr cams can make power to?

 

They work a little different on a turbo motor, you've got a bit to learn. On our high boost motors we rev to 10K on stock GSR cams (yes power is falling up there but the average peak is still around 9500rpm and the torque curves are normally still okay). That's only ~2000rpm+ higher with only the addition of boost.

 

So do you think i'll have problems making ~400whp on my setup? I'm not building an all out race motor.

 

No not at all, my friend Will's (WillieWilleFast) B16 CRX made ~400whp on 14lbs when we first started on it awhile back. Towards the end of this last season it was on high boost but he already wants a GSR bottom end (650hp wasn't enough and he only kept the motor for one season ). 350-400 is awesome on the street, anything more and you'll rip 4th from a roll on...

 

Isn't it so that there are NO oil squirters in first gen b16's ???

 

B16A1's DO have oil squirters

 

Hahahaaaa you probably discovered that just recently ???? Mr built-up !!

 

pic taken of my 1g b16a, not b16a1 even though they are basically the same motor...