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Name that part!
Working on the engine while it was on it's stand.... flipped it over and this fell out onto the ground:
 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): 
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10-05-2008, 05:04 PM
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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?
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83 944 NA - Black on black 86 951 - Red - SOLD 7/21 16 Ford Expedition He who hesitates is lost. |
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10-05-2008, 05:35 PM
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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...
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10-05-2008, 05:43 PM
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1984 porsche 944 na
Join Date: Aug 2008
Location: Westfield NJ
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Is it magnetic?
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10-05-2008, 06:12 PM
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That Guy
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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. 
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Jon 1988 Granite Green 911 3.4L 2005 Arctic Silver 996 GT3 Past worth mentioning - 1987 924S, 1987 944, 1988 944T with 5.7L LS1 |
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10-05-2008, 06:15 PM
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Cogito Ergo Sum
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Im pretty sure its from the OPRV. let me search around and see if i can find a diagram
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10-05-2008, 06:41 PM
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Join Date: Jun 2003
Location: Ashland, Oh
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Is that powder coated silverm painted or just cleaned up real good?
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-1988 Black 944 w/ yellow koni's, coilovers with 250lb springs, adjustable camber plates, strut tower brace, weltmeister front and rear sway bars, 968 caster blocks and 5 pt harnesses www.apartabove.com |
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10-05-2008, 06:44 PM
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Cogito Ergo Sum
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Pull up the parts diagrams. Oil cooler is like page 39 and i think that might be part 22
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10-05-2008, 06:53 PM
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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?
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M Last edited by Schumi; 10-05-2008 at 07:22 PM.. |
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10-05-2008, 07:20 PM
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def doesn't look familiar.
maybe it's just a solid billet rod that someone left in there? hehe |
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10-05-2008, 07:22 PM
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That Guy
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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..  .
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Jon 1988 Granite Green 911 3.4L 2005 Arctic Silver 996 GT3 Past worth mentioning - 1987 924S, 1987 944, 1988 944T with 5.7L LS1 |
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10-05-2008, 08:35 PM
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Cogito Ergo Sum
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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.
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10-05-2008, 08:39 PM
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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...
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10-05-2008, 09:58 PM
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That Guy
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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.
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Jon 1988 Granite Green 911 3.4L 2005 Arctic Silver 996 GT3 Past worth mentioning - 1987 924S, 1987 944, 1988 944T with 5.7L LS1 |
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10-05-2008, 10:03 PM
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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...
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10-05-2008, 10:08 PM
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Custom User Title
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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).
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83 944 NA - Black on black 86 951 - Red - SOLD 7/21 16 Ford Expedition He who hesitates is lost. |
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10-06-2008, 05:03 AM
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Back from Beyond
Join Date: Nov 2004
Location: Alberta, Canada
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Too narrow to be 3-piece OPRV slug. It does look like a locating pin, though. Maybe relief valve for late head?
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'88 944 Auto - project, kinda '87 944 Auto - died saving my wife '84 944 5SP - crushed under shop roof during snow storm All others GONE! |
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10-06-2008, 10:45 AM
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Location: Warrenton, VA
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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.
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'99 996 Arctic silver over black. In the past I've owned and wrenched on a '96 Audi A4, '86 944 NA. '79 928, '72 914. Non-Teutonic vehicles of interest: 3 MGB's (one converted to V8 power), Triumph Stag & TR250, Jensen-Healey, T-Bird SC. Most recent "project" was a Factory Five MKII Roadster. |
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10-06-2008, 12:10 PM
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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.
 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 :-)
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11-09-2008, 05:43 PM
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Redline Racer
Join Date: Jan 2007
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Quote:
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1987 silver 924S made it to 225k mi! Sent to the big garage in the sky |
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11-09-2008, 06:14 PM
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My 951
My 83 NA
The Kraut Burner
The Bratwurst Burner
Das Boost
1986 Porsche 944 2.5l
