968 Supercharger Kit Development
10-20-2011, 03:53 PM
#1141
Developer
Thread Starter
Revisiting the double-sided belt concept:
If there is a 968 owner nearby (I am in Wisconsin) I am interested in re-visitng the double-sided belt concept.
I wasnt able to reasonably do it before, but now that we have a new, larger crank pulley and an underdrive alternator pulley, I think we may be close to taking up the belt length needed to run a double-sided belt.
I have no 968 here to fit it to, so I need someone to drop one off if they are interested. The Owner of the Loaner would get the parts at 10% above my cost and the labor would be free.
If there is a 968 owner nearby (I am in Wisconsin) I am interested in re-visitng the double-sided belt concept.
I wasnt able to reasonably do it before, but now that we have a new, larger crank pulley and an underdrive alternator pulley, I think we may be close to taking up the belt length needed to run a double-sided belt.
I have no 968 here to fit it to, so I need someone to drop one off if they are interested. The Owner of the Loaner would get the parts at 10% above my cost and the labor would be free.
10-28-2011, 02:51 AM
#1142
Advanced
Carl,
this is a wonderful project. I read all 1000+ posts during the last few days. Please let me ask a question regarding all the 968s w/o A/C like mine - A/C has allways been an option on a 968:
Would a belt setup like that will be possible?
Best regards ... Bernd
http://www.berndfuhrmann.de
this is a wonderful project. I read all 1000+ posts during the last few days. Please let me ask a question regarding all the 968s w/o A/C like mine - A/C has allways been an option on a 968:
Would a belt setup like that will be possible?
Best regards ... Bernd
http://www.berndfuhrmann.de
Last edited by BerndCF; 10-28-2011 at 03:17 AM. Reason: Add signature
10-28-2011, 05:08 AM
#1143
Three Wheelin'
You will need a different bracket (to Carl's kit) as the supercharger mounts behind rather than in front of the crankshaft pulley. You will also need an idler roller to increase wrap around the SC pulley. The benefit of the non-ac version is that you can run a normally micro-v belt (rather than use a double sided or try and run off the back of a single sided belt). I am about to install a Rotrex - the alternator hangs off the SC bracket and the bracket bolts where the normal alternator bracket bolts to.
10-28-2011, 08:37 AM
#1144
Nordschleife Master
That will not work as the SC will be spinning in the wrong direction.
10-30-2011, 07:51 PM
#1146
Nordschleife Master
10-31-2011, 01:24 PM
#1147
It was going fairly well, unti the clutch blew 
so that needs sorting now.
I have a revised pulley on it`s way to address the low boost issue, seems along the way I have ended up with a to larger one for the S1 install.
Other than that was going well, though low on power, boost kicking in around 4800.
so that needs sorting now.I have a revised pulley on it`s way to address the low boost issue, seems along the way I have ended up with a to larger one for the S1 install.
Other than that was going well, though low on power, boost kicking in around 4800.
10-31-2011, 07:07 PM
#1148
Developer
Thread Starter
Update on Stage II kit being raced
Just received this email from Stephane in France, racing our new Stage II 968 kit
with a Raptor V-L (Lightweight internals)
Pics below are of his installation and his car. He got a pretty big air-to-air intercooler in there!
with a Raptor V-L (Lightweight internals)
The result is astornishing, may be even too much. The car has never been that fast! On straight line I was nearly as fast as GT3 (415 hp). I was obliged to turn the Fuel Managment Unit to the reacher side because where I was at a 12 AFR value with the standard raptor, I was at 13 with the one you retrofited. So, there is a material difference!
My gazket finally broke at the end of the day, but it already showed some weacknesses on the 2 previous races.
So now, we know we can go as fast as the fastest stock Porshes the manufacturer sells today (GT3 and turbos).
We just have to go to a better gasket and an aftermark ECU.
I let you know what happens next and will send you the promised photos.
Stephane Serrano
My gazket finally broke at the end of the day, but it already showed some weacknesses on the 2 previous races.
So now, we know we can go as fast as the fastest stock Porshes the manufacturer sells today (GT3 and turbos).
We just have to go to a better gasket and an aftermark ECU.
I let you know what happens next and will send you the promised photos.
Stephane Serrano
Last edited by Carl Fausett; 11-02-2011 at 10:41 AM.
11-01-2011, 04:58 PM
#1149
Good to hear a racing success, sounds as though he`s having fun, needs a GCS head gasket now.
The pulley arrived today, thanks Carl.
Once the clutch is sorted this should be it.
Can`t see how hes got the intercooler in there
The pulley arrived today, thanks Carl.
Once the clutch is sorted this should be it.
Can`t see how hes got the intercooler in there
Last edited by edz968s; 11-02-2011 at 01:11 PM.
11-02-2011, 01:17 PM
#1152
Advanced
11-02-2011, 09:49 PM
#1153
Addict
Rennlist Member
Rennlist Member
11-12-2011, 12:39 PM
#1154
8th Gear
Join Date: Nov 2011
Location: FRANCE (BORDEAUX)
Posts: 8
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Hi,
My name is Stéphane TEXIER from France,
I'm a friend of Stéphane SERRANO who send pictures to Carl and this is my car
I still use a stock Raptor but next time, upgrading with light parts is expected
I only drive it on circuits
Is there someone here who can tell me, for a racing using, how many pressure whe have at 47000 rpm at the raptor wheel?
thanks
My name is Stéphane TEXIER from France,
I'm a friend of Stéphane SERRANO who send pictures to Carl and this is my car
I still use a stock Raptor but next time, upgrading with light parts is expected
I only drive it on circuits
Is there someone here who can tell me, for a racing using, how many pressure whe have at 47000 rpm at the raptor wheel?
thanks