Strom Motorsports B48/B58 Alternator Overrun Pully

[omfgzilla]

When he was listing off all those benefits before revealing what the mod was.......... that one caught me off guard. Honestly never gave alternator inertia much thought, but it makes sense. To what degree it helps the drivetrain is anyone's guess, but for 160 bucks, I'll buy one.

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The Most Efficient B48 / B58 Mod - engineered like an M4 GT3 - YouTube

B48 / B58 Alternator Overrun Pulley – Strom Motorsports

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[Rensuhlo]

Explain it to me like I'm Awad and likely to do a chargeback.

 

[omfgzilla]

Explain it to me like I'm Awad and likely to do a chargeback.

I can only explain who his tuner was during that time, it was this guy lol.
HTE Performance. custom tune b58

 

[Vegas17]

What Strom is doing with the B48 is fun to watch. I see the B48 becoming much more common swap similar to K swaps especially if they can get the ZF8 integration 100%.

Strom also has the charge pipe intercooler which hopefully makes its way over to the B58.

 

[omfgzilla]

What Strom is doing with the B48 is fun to watch. I see the B48 becoming much more common swap similar to K swaps especially if they can get the ZF8 integration 100%.

Strom also has the charge pipe intercooler which hopefully makes its way over to the B58.

For sure, makes me want to find a lightly damaged salvage 2.0 and build a project car.
Surprised no one's done it yet, but maybe the chassis just can't get light enough to make it worth it.

What Strom is doing with the B48 is fun to watch.

I haven't been keeping up with Strom that much since he mostly does B48 content, but like you, I enjoy watching this guy the most.

 

[i3igpete]

This is a good idea. I am buying one. One-way clutches in overrun pulleys are mostly maintenance-free, but they do have a service life. That being said, I will take a gladly accept 5 minute overrun pulley replacement at 60k, if it will extend the life of the crank pulley.

Slight clarification, pulley inertial effects should be squared. An alternator that spins at 3x engine RPM, has an effective inertia of 9x.

 

[omfgzilla]

This is a good idea. I am buying one. One-way clutches in overrun pulleys are mostly maintenance-free, but they do have a service life. That being said, I will take a gladly accept 5 minute overrun pulley replacement at 60k, if it will extend the life of the crank pulley.

Slight clarification, pulley inertial effects should be squared. An alternator that spins at 3x engine RPM, has an effective inertia of 9x.

Thing is, when an OAP fails, do they usually seize up or freewheel? Dead battery is the obvious one, but if they lock up, makes me wonder if we would be able to tell. Just in case we need to pull an Awad

 

[i3igpete]

In theory both can happen, but seizing up is more common. In which case it just behaves like the normal Factory pulley.

One Way clutches in power transmission are made differently and those tend to fail by Freewheel. Both use a wedge mechanism, but the pieces are shaped differently

 

[Vegas17]

I haven't been keeping up with Strom that much since he mostly does B48 content, but like you, I enjoy watching this guy the most.

Same, just posted his video in another thread of him using Claude to decode/find canbus signals.

 

[daobn24]

I bought one as well. Any special tools needed to install these?

 

[RyanA90]

I bought one as well. Any special tools needed to install these?

Nothing special needed.

 

[Rizen]

Solid engineering, for $160 I'm in.

 

[Vegas17]

Same, got one on the way. Haven't looked to see how tight it's going to be getting this swapped out. Someone Sputnik this install and report back please.

 

[Rensuhlo]

Same, got one on the way. Haven't looked to see how tight it's going to be getting this swapped out. Someone Sputnik this install and report back please.

Having done my AC compressor pulley...Remove the chargepipe and cooling stack shroud/plate. Then you'll have room. Removing the fans yields more than enough space, as well.

 

[daobn24]

There should be plenty of room and the process is easier if you already have a 2 piece charge pipe.

I'm trying to follow their instructions -

• Detension belt
• Remove plastic cap in center of alternator pulley
• Hit nut inside current pulley with impact gun to spin it off
• Remove old pulley
• Thread on new pulley (we do not recommend loctite)
• Hold center of alternator shaft with a torque wrench in the off (counterclockwise) direction - the alternator shaft is a 10mm 6 point hex (do not use 12 point). Hold Strom Overrun pulley hex with 27mm open wrench and tighten to 38lb/ft - 50Nm
• If you do not have a torque wrench that can go in the off direction then hold it with a normal wrench and make it nice and tight, it is not a critical torque spec and the pulley will self tighten in use as the alternator spins and loads.
• Reinstall belt
• If you don't understand these instructions then do not install this yourself and have a mechanic do it.

Anyone know how to remove this? I dont see a cap or nut

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