hello there guys I have the same type of bolt the allen type (part 35) and i also get a little leak that looks like is coming from the bolt ? and i also have my oil presure high like is almost always on 5 or 4,5 when is cold and when is hot it drops to 4,5 when i let go a gas it gos to like 3 or 3,5 and right back up to 4,5 or 5 so i want to change the OPRV that looks like I have the old one the 3 pieces to the new one 1 piece but looking up online i see that most 3 pieces are refer to the new models 944 and i see one of them that say is a retro fit ? so can i use the regular 1 piece or do i need to get the retro fit ? thank you.
I have a 83 model 84 s1 944 2.5l

 

You would need the retrofit part, or a good used 3-piece. Last I looked the retrofit was $400+

...and I just sold a good used 3 piece for $20 last week, if that makes the decision easier for you.

 

yes it does for sure, now i was looking at my under the engine and it looks like it also could the leaking out of the gasket and thats is a longer job i dont see no one talking about leaks out of the OPRV but on my it looks like it is leaking out of there but is super tit ? so now i dont know if my oil pressure being at 5 when is cold and just dropping to about 4,5 and id warn is something to do with the OPRV or is because the last owner did a oil change right before he sold me the car with a 20w50 and from what i read that can make the pressure go up ? when i let go of the gas it drop for a second to about 3.5 and goes right back up to 4,5 and if i hit the gas to 5 dont matter what temp ?

 

Normal pressure is 4-5 bars when warmed up and on the gas. 2.5-3 bars at idle.

 

hnn ok so i think i m fine with the 4.5 to 5, now i just check the oil leak and for sure is coming out of the OPRV and i did not take it out yet ? what may i do ? can i change the aluminum ring ? do you guys know what to do ? it is not leaking out of the oil cooler is all clean but by the OPRV is show the oil trail, now i also have power steering oil going into the power steeling boots ? dawn down here they charge me $365 to do the power steering overhaul.

 

I have the same in my 83 and was going to replace it tonight. Did you ever pull yours? Was it the old style 3 piece? Thanks.

 

It will be the three-piece style.