SoK Supercharger Install
Thread Starter
Three Wheelin'
Joined: Nov 2002
Posts: 1,411
Likes: 18
From: Winnipeg, MB Canada
Stock rods with ARP rod bolts.
I asked around and the consensus seems to be that the stock rods are good for very high horsepower and that Carrillo rods are a good investment if your plan is to raise the maximum RPM.
I still havent made a final decision on the clutch & pressure plate. I was thinking of using my spare RS flywheel, with the pressure plate I just installed with my new DMF and a new RS clutch disc, But I am not sure if I would be better off ordering the clutch and pressure plate from one of the turbo models instead.
(All opinions welcome)
Also with the AFR/Boost gauge I like the idea of the blownsix gauge for regular use, but it would be nice to have a logging gauge for when I first tune the system. (decisions, decisions)
The most important thing is that my wife not see any of the bills.
Kirk
Kirk
I asked around and the consensus seems to be that the stock rods are good for very high horsepower and that Carrillo rods are a good investment if your plan is to raise the maximum RPM.
I still havent made a final decision on the clutch & pressure plate. I was thinking of using my spare RS flywheel, with the pressure plate I just installed with my new DMF and a new RS clutch disc, But I am not sure if I would be better off ordering the clutch and pressure plate from one of the turbo models instead.
(All opinions welcome)
Also with the AFR/Boost gauge I like the idea of the blownsix gauge for regular use, but it would be nice to have a logging gauge for when I first tune the system. (decisions, decisions)
The most important thing is that my wife not see any of the bills.
Kirk
Kirk
Thread Starter
Three Wheelin'
Joined: Nov 2002
Posts: 1,411
Likes: 18
From: Winnipeg, MB Canada
Nothing to report yet.
SoK is shipping the parts
Ordered a pile of parts from Sunset Porsche... They are being shipped
Ordered a pile of parts from EBS racing... They are being shipped
blah.
Kirk
SoK is shipping the parts
Ordered a pile of parts from Sunset Porsche... They are being shipped
Ordered a pile of parts from EBS racing... They are being shipped
blah.
Kirk
Race Car
Joined: Sep 2005
Posts: 3,508
Likes: 0
From: England UK
The on board computer display is in the rev counter, so the boost is displayed here. However a stock 964t does not show accurate boost pressures and is a waste of time. The popular thing is to replace the clock with a boost gauge.
Three Wheelin'
Joined: Jun 2001
Posts: 1,641
Likes: 3
From: Just North of "Big D"
Problem is the only boost gauge I have found that replaces the clock is made for the early 930 cars. The gauges in the early cars were halo lit around the outside of the gauge face. 964 gauges are back lit so if you install an early boost gauge in place of the clock, the lighting will not match your 964 gauges. Just an FYI.
Instructor
Joined: Jan 2006
Posts: 166
Likes: 0
From: Edmonton Alberta
FWIW, I installed the Innovate Motorsports wide-band AFR guages and several other of their chained devices in my blown Miata a few years ago (213rwhp in a 2400lb 1.8L car). The data logging capability itself was worth the price of admission. The wide-band O2 sensor was a standard Volkswagen unit I could buy at the local dealership for about $60 whenever I needed a replacement.
If you go this route, buy two O2 sensors (one for each bank) plus at least one spare from the get-go. You'll probably toast one O2 sensor pretty quick as the digital wide-band controller is VERY picky about how you start your car and power the heating element of the sensor.
Anyway, all their stuff worked great back then, and since then the Innovate engineers have made many improvements in communication protocol and displays. But mostly you buy the endless and always timely support of Klaus who seemed eternally accessible on their user forums, and who has extensive experience and knowledge of porsche.
The display gauges are pretty interesting in that they are very thin and could be surface mounted, say on a backplate attached to the bottom or top of the windscreen (maybe using suction cups like radar detector mounts for portability when not tuning), depending on your preferences for looking up or down for data. You can also mount them in triple or dual gauge DIN-sized panels and installed where your stereo head unit is, if you're so inclined.
The only caveat I have with the gauges is that they have an aluminum backside to facilitate heat dissipation, and its better if they are mounted so that they either have lots of air moving behind them, or are mounted to a metal plate.
The software that comes with this stuff is pretty good, and fairly thorough. I could tune fuel in the boost regions fairly easily with the "spreadsheet" and graphic data displays.
If you go this route, buy two O2 sensors (one for each bank) plus at least one spare from the get-go. You'll probably toast one O2 sensor pretty quick as the digital wide-band controller is VERY picky about how you start your car and power the heating element of the sensor.
Anyway, all their stuff worked great back then, and since then the Innovate engineers have made many improvements in communication protocol and displays. But mostly you buy the endless and always timely support of Klaus who seemed eternally accessible on their user forums, and who has extensive experience and knowledge of porsche.
The display gauges are pretty interesting in that they are very thin and could be surface mounted, say on a backplate attached to the bottom or top of the windscreen (maybe using suction cups like radar detector mounts for portability when not tuning), depending on your preferences for looking up or down for data. You can also mount them in triple or dual gauge DIN-sized panels and installed where your stereo head unit is, if you're so inclined.
The only caveat I have with the gauges is that they have an aluminum backside to facilitate heat dissipation, and its better if they are mounted so that they either have lots of air moving behind them, or are mounted to a metal plate.
The software that comes with this stuff is pretty good, and fairly thorough. I could tune fuel in the boost regions fairly easily with the "spreadsheet" and graphic data displays.
Thread Starter
Three Wheelin'
Joined: Nov 2002
Posts: 1,411
Likes: 18
From: Winnipeg, MB Canada
I received the parts back from SoK
They machined the pistons down to 9:1 compression, strengthened the welds on the aluminum A/C bracket, and added an extra steel plate to the engine carrier to make it stronger.
In the picture of the A/C bracket you can see how they welded a new seam along the inside edges.
For the engine carrrier they welded an full insert plate into the top half. You can see where they spot welded it along the outside edges.
For the pistons they took material off the top crown. I tried to take some shots that showed how much was removed. In these pictures you can see an original piston and the machined one.
Kirk
They machined the pistons down to 9:1 compression, strengthened the welds on the aluminum A/C bracket, and added an extra steel plate to the engine carrier to make it stronger.
In the picture of the A/C bracket you can see how they welded a new seam along the inside edges.
For the engine carrrier they welded an full insert plate into the top half. You can see where they spot welded it along the outside edges.
For the pistons they took material off the top crown. I tried to take some shots that showed how much was removed. In these pictures you can see an original piston and the machined one.
Kirk
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Thread Starter
Three Wheelin'
Joined: Nov 2002
Posts: 1,411
Likes: 18
From: Winnipeg, MB Canada
Marc,
When I talked to SoK they offered to do the brackets as well so it seemed like the easiest solution.
Pistons: I did a measurement and it looks like they removed 3mm from the dome. (Its not easy to measure)
Now I just need to wait for the order from Sunset Porsche to arrive and I can start putting the motor together. Probably sometime in November at this point.
Kirk
When I talked to SoK they offered to do the brackets as well so it seemed like the easiest solution.
Pistons: I did a measurement and it looks like they removed 3mm from the dome. (Its not easy to measure)
Now I just need to wait for the order from Sunset Porsche to arrive and I can start putting the motor together. Probably sometime in November at this point.
Kirk
Instructor
Joined: Apr 2007
Posts: 107
Likes: 1
From: Melbourne, Downunder
Use a syringe to measure the water, back up to the same level as the original piston.
I worked out that you will need to drop 12cc's to go from 10.5:1 to 9:1, I'm assuming that's what you're after.
Thread Starter
Three Wheelin'
Joined: Nov 2002
Posts: 1,411
Likes: 18
From: Winnipeg, MB Canada
If I feel motivated I might check what the actual compression ratio is.
Two good articles on the procedure can be found here:
http://members.rennlist.com/jimwms/Tech/comp_ratio.html
http://www.imperialclub.com/Repair/E...ompression.htm
Previous thread for rebuild of this motor can be seen here:
https://rennlist.com/forums/showthre...ferrerid=10545
Kirk
Two good articles on the procedure can be found here:
http://members.rennlist.com/jimwms/Tech/comp_ratio.html
http://www.imperialclub.com/Repair/E...ompression.htm
Previous thread for rebuild of this motor can be seen here:
https://rennlist.com/forums/showthre...ferrerid=10545
Kirk
Instructor
Joined: Oct 2007
Posts: 122
Likes: 0
From: Utah but not for long!
Kirk,
Ops
, sorry about that first post! I didn't take the time the day I came upon your thread (trying to read and trying to watch/playing with my boy) to read all the posts on the tread, again sorry about that, newbie mistake!
Your doing what I've been researching & save up for, but I haven’t got your skills on Porsche's yet (I’ve only had my 90 964 C4 a year & like you as I’ve read, have had very little time to learn), or to try this on my own. So I will be following with both eyes wide open.
I've also been looking for a used charger, but haven't had any luck, any advice (I'm sure more will come after you finishing your build) on where to look for one or even what a fair price? I have checked into new but the dyno chart that you posted from SoK HP rating is going to be incredible, I'd love a ride when it's done!
I just did my motor this last spring (Andial 3.8 kit with all the extra bells and whistles) I'm really happy with it, but I really would have liked to have done everything all at once, but then there's that darn money thing. But at least this way I'm able to feel the difference in all the upgrades.
I will be reading the tread with complete anticipation and like I implied in my first post, your my hero
, your car will be unreal! Hopefully I'll be able to join you one day soon!
keep showing all the killer pic's, and thanks for sharing all this, it hugh for a newbie like myself!
Ops
, sorry about that first post! I didn't take the time the day I came upon your thread (trying to read and trying to watch/playing with my boy) to read all the posts on the tread, again sorry about that, newbie mistake! Your doing what I've been researching & save up for, but I haven’t got your skills on Porsche's yet (I’ve only had my 90 964 C4 a year & like you as I’ve read, have had very little time to learn), or to try this on my own. So I will be following with both eyes wide open.
I've also been looking for a used charger, but haven't had any luck, any advice (I'm sure more will come after you finishing your build) on where to look for one or even what a fair price? I have checked into new but the dyno chart that you posted from SoK HP rating is going to be incredible, I'd love a ride when it's done!
I just did my motor this last spring (Andial 3.8 kit with all the extra bells and whistles) I'm really happy with it, but I really would have liked to have done everything all at once, but then there's that darn money thing. But at least this way I'm able to feel the difference in all the upgrades.
I will be reading the tread with complete anticipation and like I implied in my first post, your my hero
, your car will be unreal! Hopefully I'll be able to join you one day soon!keep showing all the killer pic's, and thanks for sharing all this, it hugh for a newbie like myself!