Tom: Isn't that "blanking plate" the location for the connection of the turbo oil return line to the block (Item 12 with the Item 14 gasket and Item 15 bolts) here:
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It is but the small chassis cars had the drain in the oil pan extension.
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To further what was said just above. The AAN return location is the mounting point for the small black bracket on RS2/S2 equipped with a/c. RS2/S2 without a/c utilized the same location on the side of the block as the AAN for.the oil return.
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Originally posted by ThatGUY View PostI have never seen that heat shield over the front part of the manifold/ wastegate before.
Was this RS2 specific?
What was its primary purpose?
Andrew
The shields are S2/RS2 specific.
The purpose is to keep the heat from the manifold off the cold side of the turbo and the charge line running along side the valve cover.
I had snapped a couple of pics of the heat shields before they went on the motor just for this reason.
Part numbers
034 133 832 K large shield
034 133 833 N small shield
Last edited by saltinot; 29 February 2012, 17:34.
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Originally posted by saltinot View PostTo further what was said just above. The AAN return location is the mounting point for the small black bracket on RS2/S2 equipped with a/c. RS2/S2 without a/c utilized the same location on the side of the block as the AAN for.the oil return.RS2'd 93 UrS4 5 spd sedan
94 UrS4 V8 6 spd manual avant
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Originally posted by UrS4boy View PostOkay. Poked around and found this diagram. Maintenant, Je comprends, Miss Lemon:
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Pulled out the CRB and mounted it on an engine stand to get it, and myself, off the ground. After sealing up the vent with some duct tape I was able to rotate it on the stand competely upside down which made the clean up job easier. The intermediate section's paint was pealing and had some surface rust so I gave it a good workover with the needle scaler. After the scaler session I started sanitizing it in preparation for replacing the seals. Marine clean and a toothbrush seems to work the best, but the work it tedious. All those little grooves and cubbyholes. I got about half way finished when I ran out of daylight.
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Originally posted by saltinot View PostThe A/C equipped RS2/S2 also require a different oil return line that turns toward the oil pan. You can bearly see the A/C specific oil pan flange and the oil return line in the pic below.RS2'd 93 UrS4 5 spd sedan
94 UrS4 V8 6 spd manual avant
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Originally posted by UrS4boy View PostThanks Tom. Any chance of a lower angle photo showing the oil pan extension and the oil return line - for the archives?
The locals can correct me but I believe this drain location was also used in S2s with AC.
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I see how the oil return line works on a 3B block (on the oil pan extension). It also shows that, unlike the AAN/ABY/ADU triplets, there is no oil return flange possibilities on the 3B block.
Photo from Ruffiano's (Dave's - not me) Motorgeek thread:
RS2'd 93 UrS4 5 spd sedan
94 UrS4 V8 6 spd manual avant
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Originally posted by JariP View PostJust use the bracket with o-ring. There seems to be some variations with the ac bracket and bracket fitting angle/height on the block side depending on the block's manufacturing date, I hope you found the right bracket for your block and ac compressor.91CQ20v - Gone to a new home
93UR-S4 - The Magic Carpet
94S2Bus - The Emerald Express
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