Vargas Crank Bolt Capture Installed

[MJ6]

Originally Posted by ILoveCugars

There have been multiple cars spin with just a CBC.

There was one posted today one of large F80 FB pages, 6mt, Ps2, 93oct tune, 550whp with spun hub.

Do you happen to have a link to the post off hand? I was searching the F8x related groups I'm a part of and was wondering if it was posed in one that I'm not a member of. I'm genuinely curious to read about the circumstances surrounding it.

Chris@VargasTurboTech You're absolutely correct, there are a whole slew of variables that could be accounted for which could effect the outcome: break away under constant force, drive train shock from a kick down, high load low RPM. There's also the factor as you stated that someone may wait until a higher mileage to address the crank hub issue, and there's no way to know for sure the level of integrity of the hub at that point.

What I'd suggest then as an alternative to the mathematical model is using a test rig to measure the break away force based on unaltered factory specifications: crank bolt torqued to spec and friction disks confirmed to be intact. By simulating a shock load similar to a WOT launch at different torque values (as that would likely be the most extreme example of shear force the friction disks would experience) it might provide a good baseline. As has been stated before though there's no guarantee that a CBC alone would work if the torque specs are off or other variables are present, but it would at the very least give people an idea what the limitations of the stock hub are under perfect conditions.

[MadM2C]

We still have no evidence of a spin hub with CBC. it’s hilarious

[CloudVIII]

Originally Posted by espressoo

Glad to hear it's held up. What HP and torque are you pushing nowadays?

Last dyno was 731whp/680tq

60-130 in 5.7

Trap speed of 142.7 in the 1/4 mile.

[CT_M3]

That’s the first one I’ve heard. When you say “multiple”, where else have you read it?

[Detoxified]

Originally Posted by ILoveCugars

There have been multiple cars spin with just a CBC.

There was one posted today one of large F80 FB pages, 6mt, Ps2, 93oct tune, 550whp with spun hub.

Link please

[deeldoo]

Originally Posted by CloudVIII

Last dyno was 731whp/680tq

60-130 in 5.7

Trap speed of 142.7 in the 1/4 mile.

142.7? Holy shit

[Cboy]

Originally Posted by CloudVIII

Last dyno was 731whp/680tq

60-130 in 5.7

Trap speed of 142.7 in the 1/4 mile.

Hey when they redid your crankhub did they torque to factory spec or over torque and then put on the CBC?

Super glad to hear it's holding up for you with all that power just curious on the details. Thanks!

[CloudVIII]

Originally Posted by Cboy

Hey when they redid your crankhub did they torque to factory spec or over torque and then put on the CBC?

Super glad to hear it's holding up for you with all that power just curious on the details. Thanks!

It has a bit more on it but don't want to give advise on TQ to yield bolts other than to go to spec.

[Electric]

I've been scouring forums trying to find someone with a CBC who has spun.. anyone have a link?

I am getting a CBC done as I am just trying to reinforce its a good idea given I am stock except for BM3 OTS2 tune.

[M2C_OZ]

Been FBO E85 for over 10k miles now, i beat on the car a lot and its been totally fine on just CBC. Vargas ftw

[jpy1980]

Originally Posted by ILoveCugars

There have been multiple cars spin with just a CBC.

There was one posted today one of large F80 FB pages, 6mt, Ps2, 93oct tune, 550whp with spun hub.

Can you post screenshots please? I'm genuinely curious but don't have access to the Facebook group

[Beemerm3]

I was in that group. It was toxic lol. N doubt there's any spun hubs with the cbc. It would been all over the internet by now.

[jpy1980]

Originally Posted by Beemerm3

I was in that group. It was toxic lol. N doubt there's any spun hubs with the cbc. It would been all over the internet by now.

Yea I left the group as well as all Facebook car groups. So toxic and unnecessary. Glad to come back to the forums haha.

[Beemerm3]

The n55/s55/b58 support group is not that bad

[MisterF80M3]

Originally Posted by Beemerm3

I was in that group. It was toxic lol. N doubt there's any spun hubs with the cbc. It would been all over the internet by now.

It's just a lot of trolls. If someone asks questions they will automatically say "spun crank hub"

I'm guilty of that for dumb questions.

[Marioec]

Bringing back this thread from the dead but has anyone spun the crank hub with CBC only ?