Name that part!
 

Working on the engine while it was on it's stand.... flipped it over and this fell out onto the ground:

http://forums.pelicanparts.com/uploa...1223254813.jpg

That is a 17mm socket for size reference. This is a small hardened steel cylinder that I think came from the oil cooler region but I have no clue when it popped out of. Any ideas? I have been meticulously memorizing how things go together but I didn't see this before it fell off.

Here is a mock up of the motor thus far after cleaning (stuff isn't bolted together):

http://forums.pelicanparts.com/uploa...1223255044.jpg

Jesus that's beautiful!

If your part isn't part of the OPRV, then I have no idea (That is right by the oil cooler).

A 22 LR cartridge that someone dropped by mistake?

I'm pretty sure it came from somewhere in the OPRV but I cannot find a parts diagramme for it anywheres to see how it slides back in...

Is it magnetic?

There are pins that center the cam tower on the cylinder head that look similar. But based on the picture im not sure if its the same size.

Look at the ends of the cylinder head (both sides) and you will see what i mean in this picture. I think what you have pictured is a little larger though.

http://img.photobucket.com/albums/v1...b/IMG_6011.jpg

Im pretty sure its from the OPRV. let me search around and see if i can find a diagram

Is that powder coated silverm painted or just cleaned up real good?

Pull up the parts diagrams. Oil cooler is like page 39 and i think that might be part 22

It is not the pins that hold the cam tower aligned. It is smaller than that. It surely is magnetic, it feels like steel. it is solid, not hollow.
porsche4life what diagrams are you looking at? The ones at pelican and the ones at Porsche both have only 1 page of oil cooler stuff and nothing on those pages resembles this.. I cannot find a detailed view of the OPRV.

The engine was just cleaned up really nicely and then painted with ceramic high heat silver paint. baked on with a heat gun for good measure.
Technoduck I want to know how you got the inside top of your head by the valve spring so clean.... is that head powdercoated?

def doesn't look familiar.

maybe it's just a solid billet rod that someone left in there? hehe

Schumi, not powder coated. It was hot tanked by whichever machine shop Lindsey Racing uses when it was ported..etc. I had another cylinder head from my '87 n/a that was cleaned up the same way locally. I highly recommend bringing your excessively dirty engine parts to the local machine shop to have cleaned.. takes about 15 minutes and they usually look brand new.

I guess its sad that i actually felt bad putting such a clean part on the car.. :).

Sorry schumi i just pulled up the factory parts diagrams from the book. I have them on cd. cant seem get adobe to take a screenshot of the page im talking about.

TechnoDuck- yea, I am have this clean engine and I have this horrible engine bay... I am in the process of stripping all of the engine bay rubber sound/heat mat and underneath is nasty stuff. Hopefully before this pretty engine goes back in I will have the engine bay painted and the firewall coated in gold heat reflective foil...

Rent a steam cleaner for the engine bay if you have the time to mess around a little. I did this with a friends car. The other option was to buy a case of brake cleaner and goto town scrubbing. We decided on the steam cleaner so we could hit the rear of the car aswell. It was amazing how much crud accumulates on the transmission and rear suspension. We got a little carried away and did the wheel well's also. Who would have known the undercoat is the same color as the car...and not black :). It also did a great job cleaning the metal heat shields and insulation around the firewall.

Yea I took a can of brake clean to the wheel wells and was shocked to find the undercoating was Zermatt Silver just like the car....


Oh and also the weekend I painted the top of the car (sunroof, roof, A pillars) a gold metallic color. So it has a two tone paint job. Therefore it must be a race car! No, in all honestly the roof was pitiful.. it had no clear coat left and was etched to hell. Problem is I did such a good job painting the top that now the rest of the car looks not as good. The whole thing will get painted eventually.


Like I said... this $700 car will easily turn into a $4000 car one everything is done...


Now If I can just find where this steel cylinder goes...

If that is part of the OPRV, it's the end of a 3-part (old style) valve.

There's a receiver that screws into the housing by the oil cooler, a spring, and that thing (in that order). If I remember correctly, one end is hollow (and that's where the spring goes).

Too narrow to be 3-piece OPRV slug. It does look like a locating pin, though. Maybe relief valve for late head?

From examining the OPRV on my '86 for hours on end, I'd say it's the piece inside the OPRV that fits partially inside the plunger and the spring. The cap has a fixed one. I believe it's job is so that under extreme pressure circumstances, they contact each other keeping the spring from compacting and binding in the compressed state.

OK update here as I am getting ready to reassembly the motor with a fresh head and new oil cooler seals. I took the part in question (see picture at top of this thread) and tried to see if it came from the OPRV. It slid down the OPVR main tube and fit perfectly in the hole in the bottom. Snug. Now it's down there; I figured it pretty much belonged there because it was a perfect fit. And it didn't seem to want to come out too easily after it got in there (I left it for I didn't have a set of small needle nose pliers to pull it back out) After looking at this image I think it is number 2 in the image. It fits inside what I guess was #4 down inside #6? I never saw part #4, it is still inside #6 which is still screwed in the block.

http://forums.pelicanparts.com/uploa...1202934371.jpg

For reassembly, I have the small piston thingy (part #2) slipped down into part #4 snugly and then the spring goes in over it and I tighten down the cap (#1) after it is all in? I don't want to screw this up but this seems too simple; AKA I don't really understand how this thing does anything :-)

just hit the "print screen" key and paste into paint or some other graphics program.