The Central Hub for DSM Community and Information

For 1990-1999 Mitsubishi Eclipse, Eagle Talon, Plymouth Laser, and Galant VR-4 Owners. This is where the DSM platform history is documented and archived. Log in to help us in our mission, and to remove most ads from the browsing experience.

Resolved Which OFH port for turbo

This site may earn a commission from merchant affiliate links, including eBay, Amazon, and others.

Archer Fabrications

10+ Year Contributor
9,719
705
May 9, 2011
Scottsdale, Arizona
I have searched around and havent really found a descriptive answer. Which port on the ofh should i feel my hx40 on, i know there is a clean side and an un filtered side but i have no idea which is which, so which is the clean one i should tap into? Also if anythin looks funky as far as wiring for oil pressure sensors go let me know
You must be logged in to view this image or video.
 

Attachments

You must be registered for see attachments list
Last edited by a moderator:
Hey man what's up.

The factory feed for the T-25 is the port on the far right there, -directly below the oil pressure switch. Looks like it may be stripped? It's a 3/8 BSP fitting. Very close to NPT threads but still not NPT

The blue ring terminal can be hooked up to the oil pressure switch to operate the light if you wanted

And the sad looking wire coming off the black connector goes to the factory oil pressure gauge, which I see is not there. It looks to be replaced with an aftermarket deal.

I ASSume you know whether or not to run a restrictor. Because I'm not 100% on Holset oiling yet. Although that is the turbo I plan on running next year after trying maxing out this E316G on meth.

Here's more info
RRE's Turbo Oil Line Installation Instructions

*too late!
 
Last edited by a moderator:
Yeah it is stripped..... Sucks ill try
My hardest to get it out, is that the only one i can go off? And im not going to run a restrictor, just a -4an line with a -12 drain and a vented through pipe pcv
What is the alan wrench size
For this plug? The brass sender is an aem pressure gauge, there is another sender switch at the top of the pic it looks like is that the dummy light switch? Say that port is stripped what other options or suggestions do you guys have to get that sucker out. I haven't even attempted it yet. Is there another
Clean port?
 
Yeah it is stripped..... Sucks ill try
My hardest to get it out, is that the only one i can go off? And im not going to run a restrictor, just a -4an line with a -12 drain and a vented through pipe pcv
What is the alan wrench size
For this plug? The brass sender is an aem pressure gauge, there is another sender switch at the top of the pic it looks like is that the dummy light switch? Say that port is stripped what other options or suggestions do you guys have to get that sucker out. I haven't even attempted it yet. Is there another
Clean port?

If it is stripped than you will need to drill it out and try an easy out on it. You will have to heat the housing around the plug or else it will never come out. A propane torch will work fine. Why not just feed from the head?
 
If it is stripped than you will need to drill it out and try an easy out on it. You will have to heat the housing around the plug or else it will never come out. A propane torch will work fine. Why not just feed from the head?

cause i have a holset HX40 that needs OFH status. anyone know the alan key size for that stripped plug there?

is the plug right below my oil pressure sensor clean oil? that would probably be the best place because the gauge will tell pressure for the same inlet i believe correct?
 
Last edited:
is there anything werong with running off the bottom port? the top is really stripped it was infact an 8mm alan key but it was already too far done. does anyone know what kind of material the plug is? i am thinking about welding a bolt inside of it and then trying to just loosen it like that. these things are bitches! got the holset installed today though! will be doing a write up on it.
 
Justin really likes those FP inline oil filters (which also have a restrictor built in if needed) I don't know if you can use that with one of the other unfiltered ports. Using the unfiltered port, I'd be worried about the filter getting clogged pretty quick

Can you pick one up at the local yard? Maybe upgrade to the 90' style OFH

I'll check out that article if you make one
 
Justin really likes those FP inline oil filters (which also have a restrictor built in if needed) I don't know if you can use that with one of the other unfiltered ports. Using the unfiltered port, I'd be worried about the filter getting clogged pretty quick

Can you pick one up at the local yard? Maybe upgrade to the 90' style OFH

I'll check out that article if you make one

im just waiting on more drain fittings a 30* a 60* and a 45* going to play with which has the best transitions.


is the 90 OFH really an upgrade? dont you need an external oil cooler for those? i can get a new ofh of extreme psi, but im not really trying to port out the relief valve again, although my relief screw is very very loose and im atempting to tighten it with a screw driver and hammer :S
 
im just waiting on more drain fittings a 30* a 60* and a 45* going to play with which has the best transitions.


is the 90 OFH really an upgrade? dont you need an external oil cooler for those? i can get a new ofh of extreme psi, but im not really trying to port out the relief valve again, although my relief screw is very very loose and im atempting to tighten it with a screw driver and hammer :S

The 90 ofh is an upgrade. You will have lower oil temps with that and an external cooler. I wouldn't go thru the hassle though. I would just pull the housing and try to weld a bolt to it like you were thinking. That will loosen the thread sealant on the plug and allow you to remove the plug. That or just drill it and use an extractor on it. What do you mean by oil relief screw?
 
stripped the top and botom to shit with a bolt remover haha. if im pulling the OFH im going to just buy another one, i dont want an external oil cooler, just another thing to have to watch for leaks. id get a direct replacement for the 90.5 to 92.5 ofh which i believe has coolant lines. i did how ever get the plug out easily by the sender unit. is there anything wrong with that port beside the fact its not filtered? i know the exact pressure of the turbo oil line at that port because the sender unit is plugged in right there also. what do you guys think? my 6 bolt is a 92

EXTREME PSI : Your #1 Source for In Stock Performance Parts would this be the direct replacement? if im not mistaken it is. only i dont see the coolant lines to it? or is that something i can take off of my current one. i have never taken off the ofh myself, i know buying a new one requires porting again, which isnt really a problem, i can match the old ofh port, plus my pressure bolt is mad loose so its probably a good idea i replace it or take the front timing cover off anyway (which i also havent done yet) most of my current ventures have been the front and tranny side of the engine bay LOL.
 
Did you heat the housing with a torch before attempting to remove the plugs. IF you don't heat it well than you will never get them out no matter what you do.
 
Did you heat the housing with a torch before attempting to remove the plugs. IF you don't heat it well than you will never get them out no matter what you do.

yeah i got a torch and lit em up. kinda sketchy around the belts if you ask me, even if you direct it away. im leaning tword getting a new ofh. these things are being impossible. even screw extractors as big or bigger then the hole itself cant get out. the only one i got out was the brown one by the brass sender unit. i COULD use that for the turbo, i do change my oil every 700 miles.
 
yeah i got a torch and lit em up. kinda sketchy around the belts if you ask me, even if you direct it away. im leaning tword getting a new ofh. these things are being impossible. even screw extractors as big or bigger then the hole itself cant get out. the only one i got out was the brown one by the brass sender unit. i COULD use that for the turbo, i do change my oil every 700 miles.

That is un filtered oil. Even if you run an inline filter you will be way more likely to clog up the inline filter. I would pull the housing off and out it in a vice and give it more heat. They are real easy to get out when you get it hot. You will see the sealant start to ooze out from between the plug and the housing than you know it is hot enough.
 
That is un filtered oil. Even if you run an inline filter you will be way more likely to clog up the inline filter. I would pull the housing off and out it in a vice and give it more heat. They are real easy to get out when you get it hot. You will see the sealant start to ooze out from between the plug and the housing than you know it is hot enough.

ill put up a heat sheild on the belts and alternator and important places and try and blast it again and use the bolt remover again. i didnt get it hot enough to ooze stuff. just blasted with lots of PB blaster then waited then wiped clean and blasted. worst case ill pull the ofh and replace it, but i have never removed the ofh before and i dont know how. id rather not have to go that route though.
 
No dice it's too far gone i'll have to replace the whole ofh, both front ports are stripped and the relie valve is loose ive
Already ordered another one, does anyone have 6 bolt ofh install and
Removal instructions? I havent gotten to any of tye front case side of the motor yet.
 
heres what i did to get it out although i am still replacing the ofh cause i have a new one next to me i might run this ofh for a little while. i welded an easy out insie of the stripped hole and the heat from the weld freed it up and having the easy out made it nice and simple to come out :) all done. now i hooked up my gauge to check the pressure at the inlet to the fitting that goes directly off that port, i am replacing the hose in my -12 drain with clear tube temporarily to see how much drain i am getting and how soon oil enters and exits the turbo.
 
Yes, need my transmission installed before i i finish it. I have alot written up already i just need to take
More pictures of the beveling
In the fittings,
Also have to make sure i have good oil pressure to the turbo with no restriction and a -4an feed. I have no bs and a ported
Ofh. Meed to port match the new ofh
 
Add Value - Be Respectful - No Trolling - No Misinformation - Participate Often!
Support Vendors who Support the DSM Community

Build Thread Updates

Latest Classifieds

Back
Top