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Single Crank Pulley - Single RS pulley - Single Belt w/o A/C
In order to put my finger onto the car, the first step is taking informations and honestly, this forum is full of infos regarding this modification.
But to be sure not to do mistakes, I would do a summary of what I found/understood on this argument:
- Crank Pulley (w/o A/C) is 993 102 050 40 (a very expensive part, since here in Europe it costs around 550 Euro)
- RS pulley support is 993 106 051 80
- Belt is 999 192 338 50 (9,5mm X 776mm)
Now, even if what I wrote above is right, I would still have few important questions:
- the alternator/fan pulley that I have to use is the same that is now housing onto the co-axial alternator/fan pulley support or, please correct if I got something wrong, there was an update in this part concerning a larger belt, so that updating the belt (which is probably recommended) I need also to buy an updated pulley?
Maybe the code is the one I found on the 993 Katalog, i.e.
993 106 509 50
993 106 510 50
which on the katalog are described as parts for the M64.60 turbo engine?
Or do I need some other part(s) with other code(s)?
I suppose the 776mm length of the belt has to fit the new single belt crank pulley and the alternator/fan pulley perfectly.
- the other thing I'd like to find out are the part numbers of the 3 nuts with threadlock and and 3 washers to tighten the alternator/fan pulley on the shaft support.
I am waiting for information before ordering the parts,
P.
No need to change the crank pulley. Get the RS hub from Gert Carnewal (comes complete) and use loctite on the studs because the nylocs will pull the studs out when you change the belt which is the standard fan belt. Trickiest bit is removing the altenator and pressing the bearing out of the fan very carefully. You cannot replace the fan it in situ.
Good write up here:- http://911uk.com/viewtopic.php?t=79778
The other reason is to change the 2 kgs of rotating mass onto the crank with 0,4 kgs of the single pulley: the thing is I don't want to make mistakes ordering the part numbers and if there are parts that Porsche has changed - the single pulley on the alternator/fan shaft and related larger belt for example - I am looking for the right part numbers to order.
I studied the procedure and as Endoman said the trickiest part seems to be removing the alternator and pressing out the bearing of the fan which is very fragile.
Part numbers seem to be the following:
- Crank Pulley (w/o A/C): 993 102 050 40
- RS pulley support: 993 106 051 80
- Single Belt: 999 192 338 50 (9,5mm X 776mm)
I look forward for advicecs regarding the alternator/fan pulley: is there a stronger/better version?
Is it the one made of 2 pieces for M64.60 engine? If yes, with which belt does those parts fit?
P.
P.S. The car has 117000kms: since I remove the fan, is it recommended to do something on the alternator side as well?
In order to put my finger onto the car, the first step is taking informations and honestly, this forum is full of infos regarding this modification.
But to be sure not to do mistakes, I would do a summary of what I found/understood on this argument:
- Crank Pulley (w/o A/C) is 993 102 050 40 (a very expensive part, since here in Europe it costs around 550 Euro)
- RS pulley support is 993 106 051 80
- Belt is 999 192 338 50 (9,5mm X 776mm)
Now, even if what I wrote above is right, I would still have few important questions:
- the alternator/fan pulley that I have to use is the same that is now housing onto the co-axial alternator/fan pulley support or, please correct if I got something wrong, there was an update in this part concerning a larger belt, so that updating the belt (which is probably recommended) I need also to buy an updated pulley?
Maybe the code is the one I found on the 993 Katalog, i.e.
993 106 509 50
993 106 510 50
which on the katalog are described as parts for the M64.60 turbo engine?
Or do I need some other part(s) with other code(s)?
I suppose the 776mm length of the belt has to fit the new single belt crank pulley and the alternator/fan pulley perfectly.
- the other thing I'd like to find out are the part numbers of the 3 nuts with threadlock and and 3 washers to tighten the alternator/fan pulley on the shaft support.
I am waiting for information before ordering the parts,
P.
The RS parts are
993-106-051-80 impeller hub for the alternator
Thank you Bill,
In order to remove the air conditioning support, I noticed it is a single piece together with the engine bracket and that I have either to cut it or change it, I suppose, with the RS version or the 993 not A/C version ( since I don’t know if there was a special reinforced part expressively made for the RS)
The part number of the part I want to remove is
964 126 026 00
the part number originally provided by Porsche AG for the car without a/c I suppose is
964 115 011 02
which in the 93 katalog is described as the bracket for C2/C4/cabrio and not for the RS
I have the impression and probably I am wrong, that this part is much much lighter than the one with A/C support, and that probably would be more resistant for track use to cut the part with a/c support that looks thicker and stronger.
That's why I doubt the second part I named could be used on a track car: the cup and rose had the same construction?
Any advice?
I have the impression and probably I am wrong, that this part is much much lighter than the one with A/C support, and that probably would be more resistant for track use to cut the part with a/c support that looks thicker and stronger.
That's why I doubt the second part I named could be used on a track car: the cup and rose had the same construction?
I'll want to know more about that compressor support piece & replacement part, as I just removed my AC compressor, too. Now I need to remove that big 'ol ugly mounting bracket, and wanna do it right.
I am doing this because I want to install a single crank pulley, single RS fun belt: I know I could take in place the part with the A/C compressor support, but not having anymore the A/C, giving a cleaner look to the engine bay isn't a bad idea at all, but it is just my opinion.
I will take advantage of this exchange to remove and change the engine carrier with the rennline reinforced RS style one.
I will keep you updated and will post pics of the result
I'll want to know more about that compressor support piece & replacement part, as I just removed my AC compressor, too. Now I need to remove that big 'ol ugly mounting bracket, and wanna do it right.
This is the correct part # for the console w/o A/C, 964.115.011.02 RS Bracket w/o A/C
I've done it both ways w/ that console and by modifying the A/C w/ a saw.
Either works fine, It was all so long ago I seem to recall that there was a difference in mounting bolts but can't remember what the difference was when installed you can't see the differnce
Stock console cut
Thank you for that.
Do you know if the engine needs to be dropped to remove that piece to cut it? Any "gotchas" I should be aware of that you can remember?
10-02-2017, 12:38 PM
Single Crank Pulley - Single RS pulley - Single Belt w/o A/C
