ok ive been on my h22 build for god knows how long now and its just not going good. problem that im having right now from what my tunner tells me (xenocron) is that the oil pressure on the bottom half of the motor is perfect after a new oil pump, but the oil pressure in the head wont go pass 35.

what could be the possible culprits of something like that? thanks

 

clogged oil galleries?

 

Here is what we have tried so far...

Yuriy has an oil pressure gauge on the stock sensor location that is reading roughly 50-75 psi of pressure at or near idle depending on the temp of the motor.

We hooked up another Oil Pressure sensor to the side port of the VTEC Solenoid to measure pressure at that location. Unless the oil is cold and thick...it wont budge above 30-35 psi at the head while the back of the block reads 60-75...

We have replaced the old oil pump with a new OEM unit...

Someone told me to just run a line from the back of the block to the head (like an LSVTEC setup) but that just seems like a bandaid to another problem...

The block was sleeved by ERL and the Balance shafts were eliminated at the same time by ERL. I spent a while on the phone with them brainstorming to no avail...

The block and head were assembled by a competent shop that deals with ERL on the regular...they do a lot of sleeved builds. As far as I know the head was only sent out for a valve job, so nothing critical was removed to do the valve job that could be causing this (hopefully).

I am pulling my hair out trying to figure this out...damn H motors

 

We also removed the oil filter on the back of the block and blew air through the VTEC Pressure Switch hole (as per the recommendation from the builder) to see if we could unclog anything that might be stuck in that pathway, but oil came flying out the back...LOL

 

On all B series engines, there is an oil jet that controls the amount of oil pressure in the cylinder head which is located on the surface of the block....the H series also has this hole for the oil jet on the surface of the block but on all H series engines, this oil jet belongs in the cylinder head.

Either the oil jet was put in the wrong hole or the oil jet maybe missing. Sorry but this is all I can think of. Good luck

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PHDZINE &raquo;</TD></TR><TR><TD CLASS="quote">On all B series engines, there is an oil jet that controls the amount of oil pressure in the cylinder head which is located on the surface of the block....the H series also has this hole for the oil jet on the surface of the block but on all H series engines, this oil jet belongs in the cylinder head.

Either the oil jet was put in the wrong hole or the oil jet maybe missing. Sorry but this is all I can think of. Good luck</TD></TR></TABLE>

I have heard about this oil jet on the H22 and that people have put it in causing these problems between the block and the head...pulling the head may be the next step. I just want to make sure I havent overlooked or forgot to check something that I could with the head on

 

Have you checked the Honda repair manual on how to properly check the oil pressure in the head? I have never thought about checking the pressure in the cylinder head so I couldn't tell you the procedure and specs without looking in the manual but unfortunatly im on vacations right now.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by PHDZINE &raquo;</TD></TR><TR><TD CLASS="quote">Have you checked the Honda repair manual on how to properly check the oil pressure in the head? I have never thought about checking the pressure in the cylinder head so I couldn't tell you the procedure and specs without looking in the manual but unfortunatly im on vacations right now.</TD></TR></TABLE>

Yeah there is a port on the side...this is where we hooked up the pressure gauge.

 

the h22 block does not have the oil restrictor (jet) in it. an h23 does. if someone has installed it in the block this would be the problem. what sucks is that the head will have to come off to check. also check and make sure the o-ring is in the #3 cam cap and that the 2 rocker arm shaft pins are in the 1 and 2 cam caps, they also have o-rings in them.

 

how many miles on the head?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by speedworks &raquo;</TD></TR><TR><TD CLASS="quote">the h22 block does not have the oil restrictor (jet) in it. an h23 does. if someone has installed it in the block this would be the problem. what sucks is that the head will have to come off to check. also check and make sure the o-ring is in the #3 cam cap and that the 2 rocker arm shaft pins are in the 1 and 2 cam caps, they also have o-rings in them. </TD></TR></TABLE>

This sounds helpful, thanks!

 

is there an oil restrictor in the block, if so there shouldn't be. that can cause a lack of oil to the head. the oil restrictor is located behind the middle head bolt. you will have to remove the head to see if its installed or not.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by xenocron &raquo;</TD></TR><TR><TD CLASS="quote">
We hooked up another Oil Pressure sensor to the side port of the VTEC Solenoid to measure pressure at that location. Unless the oil is cold and thick...it wont budge above 30-35 psi at the head while the back of the block reads 60-75...
</TD></TR></TABLE>

hooking up an oil pressure sensor to the side port of the vtec solenoid? you either tapped for pressure on the VTP or at the 10mm bolt in the front of the head.

if it is tapped @ the 10mm you wont have pressure unless vtec is engaged like in a b series is the same. on the VTP well thats another story. if you used another of the hex tapped bolts well i got no idea then heh. the only thing that i can think of is they installed an oil jet, which is a nono on h22's

 

There was an oil jet between the block and head...looks like we found the issue

Thanks for the help guys!