Rear End Break In

[LTb1ow]

So, how does one break in a rear end when the motor needs to be dyno tuned before the car can drive...?

*Insert philosoraptor meme*

Do I just say F it and have em do dyno pulls on a new rear? The health of the motor and turbo are significantly more important than the rear, so driving on a mail order tune is not an option.

Riddle me this.

[PolarBear]

Put it in someone else's car?

[Jersey Mike]

I'm assuming you can't temporarily run your 10-bolt & driveshaft and swap to the upgraded rear after motor break-in?

[LTb1ow]

Put it in someone else's car?

This is an option, thanks for that idea

I'm assuming you can't temporarily run your 10-bolt & driveshaft and swap to the upgraded rear after motor break-in?

RPM and or owners of vettes there would hunt me down when the 10 bolt sent axles through their cars.

[PolarBear]

This is an option, thanks for that idea


You can even change rears without breaking the seal on the brake system :welcome:

[LTb1ow]

Or, I just borrow a built rear end...

[Dudbird113]

I was in the same perdiciment as you last year when i full rebuilt my 10 bolt. I said **** it and let them beat the piss outta it on the dyno.

[The_Bishop]

This is an option, thanks for that idea



I'll volunteer to break in that axle for you. Free, even.

[sweetbmxrider]

I'll break the rear end for you.

[coolmanvette75]

Or, I just borrow a built rear end...

Good luck. Get past the guard dogs and its all yours ;)

[WildBillyT]

Going 9"? If so, borrow a center section?

[Dudbird113]

Just buy that quick performance 9 inch for 2grand. Ur gonna need it once u launch hard a few times

[LTb1ow]

Just buy that quick performance 9 inch for 2grand. Ur gonna need it once u launch hard a few times

Yes, thats the plan, cept it will need a break in period ....

[The_Bishop]

I think it'll be a non-issue.The drivetrain load on a dyno is going to vastly lower than the drivetrain load when the car is being driven. If you're very worried about it, change out the fluid after the dyno tune.

[Dudbird113]

Why not ask the guys at rpm to get it to idle and such right then break it in on the dyno without beating on it?

[sweetbmxrider]

Does the trans require break in? What about the motor?

[LTb1ow]

Does the trans require break in? What about the motor?

Trans is ready to go, Jake's runs them on dyno before shipping.

Engine will be broken in same way BLS did his.

[WildBillyT]

I think it'll be a non-issue.The drivetrain load on a dyno is going to vastly lower than the drivetrain load when the car is being driven. If you're very worried about it, change out the fluid after the dyno tune.

You know, I was thinking about saying that, but I don't know about the amount of heat his dyno pulls will generate. It's not load as it's work hardening that's the issue.

[Blackbirdws6]

I'm sure the tuner has dealt with this with brand new builds. I would consider asking them and see what they say. I'm sure they won't take any liability but it's in their best interest to give you guidance if you ask.

[Tru2Chevy]

Might also be a good idea to contact the company you are buying the rear from and see what they say about it....

- Justin

[transmaro93]

if you want you can throw your 9in in my car and you will recieve a fresh rebuilt 12 bolt in return....