1997 850 pcv kit ?'s

[erikv11]

I know it is confusing on the web, but my experience shows that the parts are interchangeable between NA vs GLT engine:

- The engine block holes: spacing between them is the same.
- The engine top port: location is the same.
- The oil trap is the same size and shape.
- The short hoses and hose-to-the-top may have different PNs, but they all fit.
...

Just noticed this post today, wanted to clear up confusion and misinformation, save some people a potential headache. Of course the engine block holes are all the same, yes. But the various PCV parts are definitely not completely interchangeable between NA and turbo. They can be interchanged only in sets, so you have to pay attention to which parts you buy. Namely:

(1) The oil traps are not the same shape between NA and turbo. There is a difference in the placement of the upper right arm. There are two different oil traps sold.

(2) Similarly, the short hoses are not all the same, and because of that they don't all fit. To account for the differences in the oil trap, there are two short hoses available, and each has different angles to connect to the block. You have to match the proper short hose with the proper oil trap.

(3) The top hose, through the intake manifold to the cam cover, is also not the same, two different ones are sold, because the intake manifolds are slightly different. Each manifold has a gap or cutout for that hose, and the gap is between different cylinders for NA and turbo. However, this hose *can* be made to fit, you can buy the "wrong" hose and force it through to work OK, so you won't be stuck with a non-working part on this one. The correct part for each manifold fits better, though.

So as long as you buy a turbo oil trap and a turbo short hose, yes it can be mounted on any car, turbo or NA. And vice-versa, you can mount an NA trap and an NA short hose on a turbo, as long as you have a matched set. But an NA oil trap and a turbo short hose will not play nice together, you will be stuck with a PCV job that can not be completed. Same for a turbo oil trap and an NA short hose: no go.

You will especially want to pay attention to these details if you are reusing some parts of your PCV and getting only some new parts. You want them to work together.

[erikv11]

Here is the info on the elbow hoses, now we just need to get the correct info on the two variant hoses from the oil trap to the top of the cam cover.

Oil trap 9146756 has the higher arm for the upper connection to the block and must be used with elbow hose 1271771, note the elbow is straight


Oil trap 1271650 has the lower arm and uses a different elbow hose, 1271653, note the elbow is angled to accommodate the different position of the oil trap outlet


For sure there are multiple part numbers for each of these parts, but AFAIK there are only two variants on the trap, accompanied by two variants on the elbow hose.