*The unofficial VR supercharged reference thread* specs, setups, et cetera

[turbo mike]

keep in mind, not all 15psi pulleys work the same on different chargers. my 2.87" pulley gives me 12psi, but it wouldnt produce less on the V9 iirc....steve can correct me on this if im wrong.

[dasGolf01]

Anyone have issues routing their v-belt on a Stage2?

I'm finding the belt is super tight fitting, having a hard time getting it over and then being able to tension it.

Right now with total slack on the blower, the belt will almost get over the pulley but not quite, so I'm not sure I can pull any tension into the blower once I get the belt routed.

VF thinks I just don't have it seated right as Stage 1 and 2 have the same belt, but I need to be able to tension the blower some to get the oil return line past the alternator as well as the discharge pipe up some to route it to the piping.

Thanks

[turbo mike]

ive been told by a few and also learned from experience. the belt should be tight when its new. if youre having trouble putting it on, youre good. my belt is a pita when new, and once its on and running for 30 min, it loosens up a lot. get it on, put tension on it, run the car for a bit. then tighten the tension some more.

[dasGolf01]

Thanks a million!

[slc92]

The power steering pulley should be the last one on since it isn't ribbed. You also mentioned intake piping. A V9 charger can be "clocked" easily. The large V band clamp that separates the two halves of the charger can be loosened and the two charger halves will rotate. I loosen that clamp every time I tension the belt so the intake piping/outlet of the charger stay in the same position while I tension the other half of the charger/belt.

Loosen the band clamp, loosen the charger al the way, route the belt, and put it over the power steering pulley last. It is tight though.

[slc92]

Quote, originally posted by -THROTTLE- »

keep in mind, not all 15psi pulleys work the same on different chargers. my 2.87" pulley gives me 12psi, but it wouldnt produce less on the V9 iirc....steve can correct me on this if im wrong.

It seems like the same size pulley on a V9 gives you about 2/3 of the boost of a V1/V2. However, it seems that V9's have less of an issue w/ belt slip as well. V9's don't seem to slip even w/ a 2.25" pulley and single idler whereas V1/V2's slip alot w/ a 2.5" pulley and dual idler from what I have heard.

[JETTSET]

2000 Jetta GLX VR6
VF-Engineering Stage 3 @ 10.5psi
stock 2.8L top and bottom
Schimmel short runner cast intake
match ported exhasut manifold. Ceramicromed
NGK MKIV OEM wires
NGK BKR8EIX plugs gapped at 0.027"
custom 2" downtubes into a 3" pipe.
3" metallic high flow cat
full 3" GHL cat back
6speed Quaife gearbox
6lb Aluminum flywheel
spinnging 14" rotors and forged BBS's

304whp@6800RPM
237 w/tq @6200PRM

Modified by JETTSET at 11:00 PM 5-7-2008

[traumatrix89]

Quote, originally posted by slc92 »

How are you getting 15psi out of a V9? What size is the pulley? The one in the pic is purple and looks like the 2.7" VF stage 2 (8psi) pulley. You would need a ~1.5" pulley to see 15psi out of a V9 and one of two things would happen. 1) The charger bearings would fail as it's spinning at it's max w/ a 2.25" 2) You would get alot of belt slip. 15psi from a V9 w/ an intercooler Sorry, I call BS

let me rephraze that..... its a 15psi pully im getting about 11psi out of it..sorry its a 2.62in pully

[CorradoMagic]

the 2.5" pulley is advertised as a 15# pulley by certain places. However, that is based on a V1/V2 charger @ an undisclosed rpm.

I ran the 2.5"/15# pulley w/ dual idler on my V1 setup. I never came even close to 15#. The V1/V2 chargers are larger & have more rotational mass to move than the V9's. This results in increased belt slip. If you were lucky enough to ever see 15#, it wouldn't be very consistent.

Cogged Pulleys FTW
Its a trade off. the V9 seems to spins easier & w/ less slip & also has a higher rev. point (65,000rpm IIRC) vs the V1 55,000.
Although the V1/2 push more CFM.

A worked head/exhaust etc w/ a V9 & no belt slip can be a very nice setup.
Big numbers should be left to turbos. Solid performance and smooth power delivery are what the SC is about.

The AC pulley has ribs that can be shaved. This will increase belt life by not having its backside run along the ribs.
The ribs on many non Vortech pulleys tend to be very sharp. When over tightening the sharp rubs tend to 'slice' through the belts. I ve been there, done that.

[dasGolf01]

awesome, thanks for the tip on that, I'll check that out when I retension the belt, just got it all hooked up. Only thing left is the catch can/heater element and vacuum lines.

[slc92]

Quote, originally posted by traumatrix89 »

let me rephraze that..... its a 15psi pully im getting about 11psi out of it..sorry its a 2.62in pully

No way. Your gauge is off or you are revving over 7200 rpm.

Vf stage 3 uses the 2.25" pullley and sees 10-10.5psi intercooled.
You are seeing 11 psi w/ a 2.62"? Nah. That's an 8psi pulley w/ IC at most.

[ThaCorradoKid]

so are pullies interchangeable from V1/2 to V9's?

[dasGolf01]

Got a lot done last night. Only thing left is the vacuum lines and check valves as well as mounting the catch can. Then button up the last bits of coolant lines, tighten down the front clip and see if it'll start up.

Will have pics, but there is something of a picture following here:

http://s264.photobucket.com/al...t=all

[CorradoMagic]

Quote, originally posted by ThaCorradoKid »

so are pullies interchangeable from V1/2 to V9's?

yes.

C2's 2.5" pulley was advertised as 15#. This is the smallest VW 'kit' pulley I have seen.
2.87
2.75
2.62?
2.50

There may be other pulleys that fit/may work available through vortech or summit/jegs but IIRC they were 8 rib. Using a 7 rib belt(trimmed from 8) on my set up before I went cogged did help some.

Modified by CorradoMagic at 10:31 AM 5-8-2008

[slc92]

VFs stage 3 is 2.25" but they don't sell it seperately.

[BlueMk3VR6]

C2 Stage 1 V1, 30# 1.35 software, came with 2.87" pulley - changed later to 2.75, 12psi, TT 2.5 cat-back, 42dd testpipe, Autotech lightweight flywheel, Peloquin slip differential. Have not dynoed yet with some changes.

[dasGolf01]

All is done now but the drain line and putting the front clip back on... should be (hopefully) running by tomorrow evening.

[hogis]

How hard is it to change out the pulley on the V-9?

What else is needed?

Thanks

EDIT for spelling


Modified by hogis at 11:31 AM 5-11-2008

[turbo mike]

hold the pulley tight, and take out the bolt holding it on. then use a pulley to pull the pulley off of the shaft.

[slc92]

Quote, originally posted by hogis »

How har is it to change out the pulley on the V-9? What else is needed? Thanks

An impact gun will make it alot easier to take the pulley bolt off. The issue is pulling the pulley off the shaft. You'll need a puller and might have to modify the jaws to fit under the pulley.

[dasGolf01]

So the kit is installed, car is back on the road, in break in period now so I haven't hopped on it, but nothing leaks so far.

I am getting codes pointing to MAF fault, EPC/ASR Light and code P0102 which is the MAF Low Circuit code...

Anyone else have this issue with a VF Kit?

I did the extender harness and followed the instructions wiring in the MAF Clamp. The switched wire is in the crank case heater circuit and the ground just tied into the battery ground.

Clues tips hints wisdom, all would be appreciated!

I do have a new sensor if I need to, but this one was fine prior to the install.

Thanks!

[CorradoMagic]

^ did you soldier or use connectors for the extension?
I;d recheck the connections. There are basically 2 types of soldier. 1 is non electrical & may cause higher resistance.

[slc92]

BlueMk3VR6

Your car looks great You pretty much have the same setup that I do minus cams. Ever run it at the track? Anything to prevent detonation, IC, water injection, higher octane?

[dasGolf01]

We did solder them, I'll check those out and use an ohm meter and check the resistance. Thanks for the tip.

[vw1320]

While plenty of people use an impact gun I wouldn't - thats a hell of a shock to the gears/bearings for no reason. Go to Home depot or the like and get a set of strap wrenches for $10 or so. They have a two pack for about that much and the larger one works perfect. Use it to hold the pulley and use a normal box wrench or a ratchet to take the bolt off. No need for a puller either. Once the bolt is off heat the pulley up with a heat gun or a torch. You don't need to get it that hot so don't go crazy. Pulley will slide right off once hot - be sure to wear gloves though. If you use a small propane/map gas torch you could even change pulleys at the track using this method. No need for electricity and since you don't need to jam a puller in there no need to take the charger completely off.

[CorradoMagic]

I used a electric impact gun when I did mine. I tried the strap wrenched & found them to be useless for my setup. Maybe the PO over wrenched em sumting

A puller was a must for my setup. easy even w/ a cordless drill.

[dasGolf01]

So now once I get past the break in period and retension the belt, I'm dying to hit a dyno.

Does anyone know of one around the central Virginia area?

Cheers

[dasGolf01]

All done, no leaks, no squeals, no codes, everything is happy and shiny. Only thing left is to put in a boost gauge now.

[CorradoMagic]

^ how much boost & did u hit a dyno yet?

[dasGolf01]

Stage 2 with the 8psi pulley and I haven't had time to hit one yet. Going to Bugout on Sunday, but I'll try harder to find a dyno once I get back. Should be past my break in by then as well.

[hogis]

Has anyone tryed a smaller pulley than 2.25"?

I'm wondering if beltslip would become a problem.. lets say 2.10" or something like that...

EDIT: V9 units


Modified by hogis at 12:04 PM 5-23-2008

[Flyweight]

What belt size would you run for non ac non ps? Thanks.

[slc92]

Quote, originally posted by Flyweight »

What belt size would you run for non ac non ps? Thanks.

I ran a 1360mm stock VR6 w/AC belt w/ the SC and no AC. With no power steering you'll need something smaller. A stock VR6 w/ out AC belt(1290mm) should get you close but I don't know for sure.

[hogis]

What size belt should I get for the 2.25" pulley?

Thanks

[CorradoMagic]

same size belts for all pulleys on C2 kits w/ AC. there is enough adjustment in the groove to compensate various sizes. 61.5" x 6 or 8 ribs(trimmed to 7)