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I just did an oil change on my colt vista and figured since there was so much more room near the oil filter area without the turbo setup I could fit a bigger filter there if I could find one. I did, it's a wix 51182, the normal application is some old 80's peugeot.

Here it is next to a standard 6 bolt dsm style filter, fram PH3950, fram filters suck though, napa 1381. I know there is allot of application carry over for these filters for various mitsu models so if you've got the room for it most of you guys on this forum could probably use this filter.





Clearance in the vista, I actually changed it with the engine hot and no burns.



Before anyone questions the why of this, most small stock style filters can only flow a limited about even with a new unclogged filter element and go into bypass mode before even half redline. The volume the filter must flow is proportional to rpm and oil pump output. The 4g engines at least have plenty of rpm potential and a pretty oversized oil pump stock. It is an old school circle track technique to fit the biggest quality filters you can to maximize filtration at higher rpms. Usually you need to do some remote mount trickery to accomplish this but in this instance there is plenty of room stock for a bigger filter and peugeot has kindly already made the filter for us.

Do you have flow numbers for each?
I use a miata filter on my DSM.

to clarify this larger filter is only for NT cars.. if you have a turbo it wont fit..


Steve

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Steve 89 colt 2.3 stroker stock top end. evo3@20 psi 13.489@99.30mph 3/10 2012
On drag radials.auto trans.launching @ 5 psi and no traction thru 2nd.

Interesting you should ask, I did look them both up now, equivalent wix type filters rated by wix,

6 bolt style part # 51381

Max Flow Rate: 9-11 GPM

http://www.wixfilters.com/Lookup/PartDe ... Part=51381

Bigger 51182

Max Flow Rate: 7-9 GPM

http://www.wixfilters.com/Lookup/PartDe ... Part=51182

I wonder how that works exactly, guess that goes to show what they say about assuming.

I will have to cut this one open sometime and see what this is all about. Similar filtration rating in in identical form but 65% taller and if flows less? Maybe the internal construction and filter area are different or perhaps even the flow rating is based on oil viscosity for the given application and the diesels are generally spec'd for a higher viscosity?

What is the manufacturer and part # for the miata one you are using?