Oil feed off head what thread is the whole?

[DsMWookie]

I am about to run and make a SS line but I need to know the thread pitch for the whole so I can pick out the right fitting. Being that I can't drag my motor their makes it a little difficult. I thought it was a pipe thread so I figured I can't just run a bolt in to find out the size.

 

[4wd-Eclipse]

It's 1/8 NPT thread.

 

[Suparata]

That is incorrect. There are no 1/8NPT threads from the factory on a Mitsubishi. There is a bunch of 1/8BSP (JPT) but I believe he asked for the one that feeds the turbo which is 10x1.25mm.
If it's the one on the OFH the one he was asking about, it is 3/8BSP and a 3/8NPT will only catch a few threads but it seems to do the job. I prefer to run a tap in there first if the housing is off the engine.

 

[DsMWookie]

I found out it was a 10. 1.25mm the feed line for the turbo is what I was refering too. I blocked it off with a bolt and crush washer from a non turbo since they don't use that oil feed.

 

[11sec_GSX]

That is incorrect. There are no 1/8NPT threads from the factory on a Mitsubishi. There is a bunch of 1/8BSP (JPT) but I believe he asked for the one that feeds the turbo which is 10x1.25mm.
If it's the one on the OFH the one he was asking about, it is 3/8BSP and a 3/8NPT will only catch a few threads but it seems to do the job. I prefer to run a tap in there first if the housing is off the engine.

A 10mm x 1.25 fitting will not fit in the oil feed hole on my head. I have a JDM head, would that make a difference? I can get a 1/8" NPT to start a couple threads but the 10mm will not even start, it's too big.

 

[Suparata]

The hole at the end of the oil galley on the exhaust side facing the back of the engine (transmission/passenger side fender) IS a 10x1.25mm or at least it should be.