Chain tensioner or chain adjuster?
03-06-2010, 01:18 PM
#16
Drifting
So you are not supposed to use the new style tensioner with the old style chain, but the old style tensioner is no longer available. The parts list shown only shows one of the tensioners, IMS to Crank, and still available. But when I do a search on Renntech's price list the other two tensioners, for IMS to 1-3 and IMS to 4-6, both are shown with superceded numbers.
Has anyone seen these in the newer style. A little confused as to what Porsche is doing here.
Has anyone seen these in the newer style. A little confused as to what Porsche is doing here.
03-06-2010, 02:11 PM
#17
Race Director
So you are not supposed to use the new style tensioner with the old style chain, but the old style tensioner is no longer available. The parts list shown only shows one of the tensioners, IMS to Crank, and still available. But when I do a search on Renntech's price list the other two tensioners, for IMS to 1-3 and IMS to 4-6, both are shown with superceded numbers.
Has anyone seen these in the newer style. A little confused as to what Porsche is doing here.
Has anyone seen these in the newer style. A little confused as to what Porsche is doing here.
He says using VIN is the best way to ensure you're getting the right part. You have to be careful: In some cases -- one I know of for sure -- the new part is not quite a bolt in replacement for the old part.
Case in point: I ordered new washer nozzles for my 02 Boxster. The original nozzles no longer available. New ones with new part numbers (I think the same nozzles as on the 987s) were specified.
The new nozzles while they'll fit just fine require a wiring harness connector. This is a $75 item and two are required, one for each nozzle.
Sincerely,
Macster.
03-06-2010, 02:57 PM
#18
Racer
Join Date: Jun 2004
Location: Brandon FL
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I had the dealer look up the IMS to crank adjuster again when I went to pick them up, due to the drastic changes. The 4-6 adjuster now uses a 14mm allen wrench to install instead of the 24mm socket. It might be able to clear the A/C compressor now. Why Porsche changed the design, might be to reduce the scoring that I guess is very common per Jake.
Rick
99 996C4
87 944S
Rick
99 996C4
87 944S
Last edited by rb101; 06-09-2010 at 08:52 PM.
03-08-2010, 10:50 AM
#22
Drifting
The 14mm allen wrench for the 4-6 tensioner sounds like a good idea as far as access for loosening it, but It would still be hard to get the tensioner out for replacment without removing the AC compressor and loosening the bracket right above the tensioner. Really tight in there.
03-08-2010, 01:14 PM
#24
Drifting
Nope, the AC compressor and the bracket are attached to the motor so lowering the motor does not help. There is actually lots of room under the "hood." This tensioner is on top of the motor, and the problem is that the compressor is located over the tensioner and the bracket is there too. Sorry I don't have a picture. If you have done it before, taking off the compressor is not that hard, the two exposed bolts are easy access. It is the bolt on the back of the compressor that is hard to get at. The easiest way is to use and extension and go between the intake runners for 4 and 5. You have to remove the temp sensor that is located there. If you have done it before it is not so hard. The first time is challenging, figuring out where everything is. As for the bracket, pretty easy, just loosen a couple of bolts.
