2G 7 bolt Evo III oil filter housing on a 2g

[kingjust]

I assume most people are looping them and bending them out of the way. Anyone found any other sources for the housing?

Wassup fellas, well, if you look hard enough, you can fing sellers in other parts of the conutry or world. I had some sellers that had them for around 180, but that is the price you pay for a rare part in america. I don't know how much they would go for now, but if you want, I'll see if I can contact the same guy that's in japan that got me mine. It was 130 about 2 years ago, so expect it to be higher. Later fellas, just trying to help!

KJ

 

[project1g]

Ok so basically I didn't need to buy this OFH? The only reason I did, is because I used the OFH off a 3rd gen N/T. And on top of all this I haven't paid attention so maybe I'm speaking to soon, BUT I don't remember seeing my oil pressure light come on even when the key is in on. I'd check right now but none of my wiring harness is together right now.

I bought this one because I figured it was like the factory oil filter housing that had an oil cooler line connected to it (From the understanding of the guy who built the motor) With all that said, in ya'lls suggestion what should I do with it?

I really would like to get this car running. Would it be safe to run it without the Evo III OFH? Or should I wait til I can find a decently priced Oil cooler kit? Looking at mine there's an open whole and a galley plug, is this galley plug where another oil line would go from the cooler? I don't believe mine came with any kind of adapter.

I got the oe from extremepsi.com anyway, Please lemme know. I'm doing a motor swap tomorrow on a mustang for some quick money I wanna know if I need the oil cooler or if I can go ahead and get an AFC an some 550s.
Thanks
Dylan.

 

[420a-t]

I know this is old, but for anyone searching for an Evo III OFH, extremepsi has them in stock as well. I got it shipped to me within 2 days of my order.

 

[SeaveeDSM]

After searching, this old thread I think is the most appropriate place to post this updated info for use of an EVO III OFH on a 7 bolt 4G63T engine.

For my '98 GST, I very recently swapped my OEM OFH for an EVOIII OFH and used an external air cooled oil cooler as well. My OEM housing had just started to leak a small amount of coolant into the oil and if not for my anal, maniacal and constant checking of the engine oil I would not have noticed until it was too late and I had a catastrophe. Fortunately I was not too late.

I got the following parts:

EVO III Oil Filter Housing + 2G OFH housing gasket:
EXTREME PSI : Your #1 Source for In Stock Performance Parts

STM Oil Cooler and Russel Pro Classic Oil Line kit:
STM OIL COOLER KIT | 90-99 DSM The line kit is really AWESOME and easy to work with BTW.

Also ordered brand new OEM oil switch and senders - might as well since I was still on the original '98 OEM ones. I am the original owner of my GST.

The EVO III OFH only has one 1/8" threaded port for the use of either the switch OR the sender, but not both. This is only partly true.

As it turns out, you CAN use BOTH the oil swith AND the Oil sender with this EVO III housing. I found that there is a hole cast already (unthreaded) that goes into the housing at the bottom right side of the EVO III OFH but is not opened all the way through to the main oil passage just above it. It is clear from looking at this that it was cast with the idea of being able to drill into the oil passage, tap it and allow for installation of a second sensor with 1/8" thread.

So I ordered a 1/8" X 28 TPI (Threads Per Inch) BSPT (British Standard Pipe Thread) tap from Newman Tools (it was pricey and very hard to find this kind of BSPT threaded tap here in the USA), and drilled into this cavity with a 1/4" drill bit. The 1/4" drill bit does NOT enlarge the diameter of the size of the hole where you will tap - it is only to penetrate into the oil passage. You will tap directly into the outer opening of the hole without need for an additional tapping drill bit. Once tapped with the 1/8"X28TPI BSPT - it is an exact, perfect fitment for the OEM oil sender. Some say you can use a much cheaper and more readily available 1/8" NPT tap and that may be so but I am worried about the high oil pressures in our cars, and didnt ever want to ever have fitment issue in the future if I had to remove and replace the sender. The drilling and tapping is very simple, took a total of about 5 minutes to do. I ordered the 1/8"X28 TPI tap from: http://www.newmantools.com/taps/bsp.htm

All this makes more sense looking at the pics below.

For the new OFH, you use 2 of the four original mounting bolts and 2 more that are a little shorter. Sorry but I forgot which ones and what is the exact size for those. Its not hard to figure out comparing the old and new OFH though.

Hope this is helpful to somebody.

I will post pics of the installed OFH showing the instaled new OFH including the switch and sender and the oil cooler hopefully this coming weekend.

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[mantega4g63]

I thought you could get an Evo 9 OFH and it would come with everything and an extra port for an oil pressure gauge

http://www.dsmtuners.com/forums/bolt-tech/393382-evo-9-ofh-2g.html

I saw something about this posted by you or your brother before. So this give the 2g guys an external oil cooler AND an oil filter relocation?!

Awesome. No more waiting for imported parts from Japan.

From JNZ:
Evo 8 OFH - $101.85
Evo 9 OFH - $120.12

 

[SeaveeDSM]

Yes you can, but the Evo 9 OFH still only has ONE 1/8" port for either a switch or a sender, not both. The Evo 8 OFH has NO 1/8" port at all.

A cut and paste quote from turbosax2 the OP of the thread you linked above:

"The Evo 9 OFH has 3 ports: two 3/8" BSP and one 1/8" BSP. The Evo 8 OFH's only have the two 3/8" BSP ports."

I also prefer with the Evo III OFH the orientation of the oil filter - it is the same as the 2G's (facing sideways towards the alternator). With the Evo III OFH, since the thick water cooling "sandwhich" on the OFH is eliminated, the filter does not protrude inwards as much towards the alternator either so there is no longer a bit of a clearance issue with some who have large downpipes.

The Evo 8 or 9 OFH are standard USA available parts from any Mitsu dealer or other vendors and the Evo III is only a JDM part available from certain vendors who get Japan market Mitsu parts (Extreme PSI, JNZ, etc) but they stock the Evo II OFH and the price is about the same.

 

[DSM_GSX01]

Anyone know were I can get the bolts to mount the Evo 3 OFH?
Also is the tap size a 1/8x28? Just want to make sure before I order the tap.

 

[SeaveeDSM]

Any place that has Japanese metric bolts should be able to supply the bolts.

I'm going to be taking my OFH out this weekend to port the oil pressure relief hole (I have too high oil pressure after BSE and removal of oil squirters with my forged internals build - like an idiot I forgot to port the OFH when I switched to the EVO one). While I have it out I'll measure the bolts' lengths with my digital caliper and post the exact dimensions here.

As far as the tap - the OEM thread pattern is 1/8"X28 TPI (Threads Per Inch) BSPT - BRITISH Standard Pipe Thread - different from USA NPT. I ordered my tap from a place called Newman Tools. The little box the tap is in has the brand name "Goliath" on it.

See my post earlier in this thread..

 

[19Eclipse90]

Just an FYI -- BSPT actually stands for British Standard Pipe Taper. BSP exists in both the tapered thread and a straight thread, known as parallel or BSPP.

 

[sypherzero]

Sorry to bring this thread back up, I just want to ensure that I've read and understand this correctly.

To use the OEM oil pressure switch as well as an aftermarket oil PSI gauge, you must drill into the oil passage, and then thread with a 1/8" x 28 BSPT tap. My only question is, where do you put in an adapter for a SS oil feed? Do you remove the allen plug next to the already threaded port?

 

[19Eclipse90]

To use the OEM oil pressure switch as well as an aftermarket oil PSI gauge, you must drill into the oil passage, and then thread with a 1/8" x 28 BSPT tap.

Careful. Aftermarket units that are fairly universal (i.e., not meant to be OE part replacements) are not usually BSPT threads. The thread sizes can typically be found on the internet somewhere, though, so a little research ought to help you figure out what thread size you're dealing with on the gauge sending unit. An adapter might be a smarter idea than re-tapping the existing holes.

My only question is, where do you put in an adapter for a SS oil feed? Do you remove the allen plug next to the already threaded port?

No. That port is unfiltered oil and you do not want to feed unfiltered oil to your turbo. In SeaveeDSM's first picture, the feed will come from the port just to the left of the oil cooler bypass valve (the brass-looking acorn). The oil flow is no different on this housing than the '90 air-cooled unit: http://www.dsmtuners.com/forums/turbo-system-tech/409331-6-bolt-swap-90-ofh-turbo-feed.html.

 

[sypherzero]

Careful. Aftermarket units that are fairly universal (i.e., not meant to be OE part replacements) are not usually BSPT threads. The thread sizes can typically be found on the internet somewhere, though, so a little research ought to help you figure out what thread size you're dealing with on the gauge sending unit. An adapter might be a smarter idea than re-tapping the existing holes.

No. That port is unfiltered oil and you do not want to feed unfiltered oil to your turbo. In SeaveeDSM's first picture, the feed will come from the port just to the left of the oil cooler bypass valve (the brass-looking acorn). The oil flow is no different on this housing than the '90 air-cooled unit.

Thank you for your reply! Okay, so if I reverse what I had originally said, and now feed the turbo from the 1/8 BSP plug on the left, and then use the plug on the right for an aftermarket oil pressure gauge sender, would that be correct? Also, so you know if the plug below the top two ports would be filtered oil or not? Or would you advise against using that one?

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[19Eclipse90]

...if I reverse what I had originally said, and now feed the turbo from the 1/8 BSP plug on the left...

Don't do this. Both of those ports you are referring to, the left and right, are unfiltered.

...and then use the plug on the right for an aftermarket oil pressure gauge sender, would that be correct?

This is fine.

...Also, so you know if the plug below the top two ports would be filtered oil or not? Or would you advise against using that one?

The plug "below" in that picture -- just in front of the brass-looking acorn -- is filtered and the choice port for a turbo feed line on the '90 turbo and Evo III oil filter housings.

 

[sypherzero]

I found this on DSM Talk. So this would be a no no?

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[19Eclipse90]

That would be a no-no. If you didn't read posts 2 and 3 here, I'd suggest doing that: http://www.dsmtuners.com/forums/turbo-system-tech/409331-6-bolt-swap-90-ofh-turbo-feed.html.