Vargas Crank Bolt Capture Installed

[CloudVIII]

I wanted to share what the Vargas Crank Bolt Capture looks like installed. I wanted more pictures but this is all that my tech took.

Not saying this is the "crank hub" fix but it is worth a shot.

[Chris@VargasTurboTech]

Looks good! Keep us posted!

Chris

[CAOZKAN]

Originally Posted by CloudVIII

I wanted to share what the Vargas Crank Bolt Capture looks like installed. I wanted more pictures but this is all that my tech took.

Not saying this is the "crank hub" fix but it is worth a shot.

Looks nice and tight I hope it really works for you! Can you please share your car's mods? And I really appreciate if you can give feedback after using it for awhile.

[M4 CSL]

Originally Posted by CAOZKAN

Looks nice and tight I hope it really works for you! Can you please share your car's mods? And I really appreciate if you can give feedback after using it for awhile.

If it does its job, there won't be any feedback. It just stops a bolt from coming loose. Either it does or it doesn't. There is no in between.

Well, actually it should reveal something.......If the bolt does not come undone, and the CH still slips, you will prove its the friction discs that are the root cause and not the bolt backing out.

There are still many that believe is the 3 pieces causing the issue. If one of the captures fail to prevent crank hub spinning, we will have our answer.

Surely someone is working on a Woodruff key solution to the crank?

[CloudVIII]

Originally Posted by M4 CSL

If it does its job, there won't be any feedback. It just stops a bolt from coming loose. Either it does or it doesn't. There is no in between.

Well, actually it should reveal something.......If the bolt does not come undone, and the CH still slips, you will prove its the friction discs that are the root cause and not the bolt backing out.

There are still many that believe is the 3 pieces causing the issue. If one of the captures fail to prevent crank hub spinning, we will have our answer.

Surely someone is working on a Woodruff key solution to the crank?

Woodruff key has worked for decades not sure why it wouldn't work for this! Likely a challenge to retrofit though.

[Chris@VargasTurboTech]

That's been tried, and by itself doesn't work in this application -if there were more room to change the size of various parts it'd be a viable solution for sure.

[Rx7andy]

Hello, how many hours to install the VTT crank bolt capture? Thanks.

[IK6SPEED]

Originally Posted by Rx7andy

Hello, how many hours to install the VTT crank bolt capture? Thanks.

This is NOT the complete solution they are offering now. Make of that what you may.

[EB89]

Originally Posted by IK6SPEED

This is NOT the complete solution they are offering now. Make of that what you may.

Thats also NOT what he asked.

[IK6SPEED]

Originally Posted by EB89

Thats also NOT what he asked.

When a 15 month old thread is revived that is similar in nature to 3 current threads with a similar sounding name, one has to "read between the lines" of what the poster is really asking. One does not install a partial "solution". If this was the end all solution for $99, the current crop of more extensive and expensive fixes would never have been developed.

[CloudVIII]

Originally Posted by Rx7andy

Hello, how many hours to install the VTT crank bolt capture? Thanks.

I am not sure how many hours as I got it installed when I was getting re-timed after it slipped. I have heard 5-7hrs though.

[CloudVIII]

Originally Posted by IK6SPEED

When a 15 month old thread is revived that is similar in nature to 3 current threads with a similar sounding name, one has to "read between the lines" of what the poster is really asking. One does not install a partial "solution". If this was the end all solution for $99, the current crop of more extensive and expensive fixes would never have been developed.

15 months ago this was the only option still on the market as TPG was not producing their's anymore and the others were just prototypes FYI.

[FriedPiston]

Originally Posted by CloudVIII

I am not sure how many hours as I got it installed when I was getting re-timed after it slipped. I have heard 5-7hrs though.

I hope not to jinx anything on your end, but you've gone through two SCH incidents before deciding on this solution... I know you're pushing damn near 700whp these days, and it seems that this VTT crank bolt capture is actually doing something with preventing the crank hub from spinning. Otherwise, at the rate you were incurring an SCH, you would've already spun the crank hub for the third time many miles ago.

I think the VTT crank bolt capture makes for a solid alternative solution just based on this sample alone.

[CloudVIII]

Originally Posted by nars3000

I hope not to jinx anything on your end, but you've gone through two SCH incidents before deciding on this solution... I know you're pushing damn near 700whp these days, and it seems that this VTT crank bolt capture is actually doing something with preventing the crank hub from spinning. Otherwise, at the rate you were incurring an SCH, you would've already spun the crank hub for the third time many miles ago.

I think the VTT crank bolt capture makes for a solid alternative solution just based on this sample alone.

Ya it seems to be working for me.

[IK6SPEED]

Originally Posted by CloudVIII

15 months ago this was the only option still on the market as TPG was not producing their's anymore and the others were just prototypes FYI.

Well aware of that. However, if VTT, PSI and others felt this was the proper end all solution, we would not have seen them develop their current more comprehensive attempts at a solution over the past 15 months.

[Rx7andy]

Yes I was thinking if this "partial" solution is working then maybe that's all I do instead of adding the spline lock +20 hours of labor...

[yjypm]

Originally Posted by Rx7andy

Yes I was thinking if this "partial" solution is working then maybe that's all I do instead of adding the spline lock +20 hours of labor...

Makes perfect sense. If you can reduce the chance of having SCH by 50% with 20% of the cost it's very reasonable.

[FSociety]

Originally Posted by CloudVIII

Ya it seems to be working for me.

Thanks for the feedback

Originally Posted by Rx7andy

Yes I was thinking if this "partial" solution is working then maybe that's all I do instead of adding the spline lock +20 hours of labor...

+20 hrs

Originally Posted by yjypm

Makes perfect sense. If you can reduce the chance of having SCH by 50% with 20% of the cost it's very reasonable.

Better than nothing

[overlook637]

Originally Posted by IK6SPEED

Well aware of that. However, if VTT, PSI and others felt this was the proper end all solution, we would not have seen them develop their current more comprehensive attempts at a solution over the past 15 months.

BMW felt the OEM design was sufficient. Titanic was designed to be unsinkable.

At this point we don't know what or why the slips happen. Or what the least/most costly solution is.

[M2C_PLUS]

Originally Posted by CloudVIII

Ya it seems to be working for me.

Are you running a totally stock OEM hub with just the bolt capture in place? TIA

[IK6SPEED]

Originally Posted by overlook637

BMW felt the OEM design was sufficient. Titanic was designed to be unsinkable.

At this point we don't know what or why the slips happen. Or what the least/most costly solution is.

Clearly the designers of this particular solution did not feel it was the most complete solution.

That IS a fact.

And I suspect that they might just have examined more SCH failures and potential solutions than you.

[CloudVIII]

Originally Posted by GreatWhiteM2

Are you running a totally stock OEM hub with just the bolt capture in place? TIA

Yes just the capture in place.