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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > FBO E92 335i money shift clutch damage



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      10-16-2019, 02:19 PM   #1
trenbalonace
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FBO E92 335i money shift clutch damage

Long story short: money shifted from 5th to 2nd at 170kph, disengaged clutch in 1.5-2s. Engine has a crack and needs to be replaced. I know the flywheel needs to be replaced but I'm not sure if the clutch needs replacing too. It had a Spec Stage 2 clutch which was only used for about 10,000 km so it's fairly new. The guy I brought the car to says it's should be replaced but I'm not sure about it because he hasn't looked at it. His argument is that he might as well replace the clutch when he's getting the engine swapped so I won't have to go back to him if I decided to keep the old clutch and it starts slipping.

What do you guys think? Did it get that big a hit it needs to be replaced?

Last edited by trenbalonace; 10-16-2019 at 04:38 PM..
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      10-16-2019, 04:05 PM   #2
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I think he's just saying for the cost of a new clutch versus the cost of the labor you're better off just doing the clutch anyway.

It seems I only got about 45k miles out of my Stage 2+ clutch, so maybe figure out how many miles are on it & then decide. Stock clutches are like half the price of an upgraded one so it's a bit harder to swallow that pill.
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      10-16-2019, 04:50 PM   #3
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Quote:
Originally Posted by nissubaru View Post
I think he's just saying for the cost of a new clutch versus the cost of the labor you're better off just doing the clutch anyway.

It seems I only got about 45k miles out of my Stage 2+ clutch, so maybe figure out how many miles are on it & then decide. Stock clutches are like half the price of an upgraded one so it's a bit harder to swallow that pill.
The previous owner did all the upgrades including the drivetrain and he only drove
10k km in the time he owned the car. That's part of the reason I suspect the clutch may still be fine. It being that new.

The thing is it takes 3 weeks to ship the clutch from the US to the Netherlands.
When he gets the engine swapped, the car's already disassembled and waiting 3 weeks is going to be difficult with where to store the car.

Last edited by trenbalonace; 10-16-2019 at 04:57 PM..
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      10-16-2019, 10:22 PM   #4
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Quote:
Originally Posted by MrModZix View Post
Long story short: money shifted from 5th to 2nd at 170kph, disengaged clutch in 1.5-2s. Engine has a crack and needs to be replaced. I know the flywheel needs to be replaced but I'm not sure if the clutch needs replacing too. It had a Spec Stage 2 clutch which was only used for about 10,000 km so it's fairly new. The guy I brought the car to says it's should be replaced but I'm not sure about it because he hasn't looked at it. His argument is that he might as well replace the clutch when he's getting the engine swapped so I won't have to go back to him if I decided to keep the old clutch and it starts slipping.

What do you guys think? Did it get that big a hit it needs to be replaced?
I have a few questions....

1. What is a "money shift"???

2. What do you mean "engine has a crack"?

Until you dive into it, I wouldn't do anything. And like others have said, if you do end up pulling the motor.....the price of a new clutch is nothing compared to that, so just replace it.

Hope you got a damn good deal on the car.....
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      10-17-2019, 05:33 AM   #5
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Quote:
Originally Posted by iqraceworks View Post
I have a few questions....

1. What is a "money shift"???

2. What do you mean "engine has a crack"?

Until you dive into it, I wouldn't do anything. And like others have said, if you do end up pulling the motor.....the price of a new clutch is nothing compared to that, so just replace it.

Hope you got a damn good deal on the car.....
Money shift: https://www.urbandictionary.com/defi...=money%20shift
It happened to me at a relatively high speed on the Autobahn in Germany a week after owning the car. I got comfortable using it but the gear shifting is a bit different than my previous car (Mk5 GTI). I thought I was adjusted to the car but that was just in "slow" driving, up to 130 km/h (Netherlands). Everything's different at higher speeds.

Direct translated from Dutch: "the engine has a hole in it". I thought by describing it in English as a "crack" would be better wording.

The mechanic has looked into the engine with a camera so he's sure about the state of the engine. He hasn't looked at the clutch which is why I'm skeptical about replacing it. It had just 10k km on it. I'm asking myself if those 2 seconds while over-reving could've caused so much damage to the clutch.
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      10-17-2019, 10:21 AM   #6
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5th to 2nd is a severe overspeed, that's around 10k rpm glad you're ok (even though the motor isn't).

The clutch might be ok depending on how much slip happened, but you have to weigh that against the convenience of having access so easily. The labor is basically free. Inspect it, sure, but if there is any wear or what not, IMO just replace.


Chris

Last edited by Chris@VargasTurboTech; 10-17-2019 at 09:29 PM..
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      10-17-2019, 10:38 PM   #7
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Out of curiosity, what exactly happened to the engine?
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      10-18-2019, 05:16 AM   #8
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Quote:
Originally Posted by relative4 View Post
Out of curiosity, what exactly happened to the engine?
The first thing they saw when they removed the oil pan was that the crankshaft broke into two pieces. Upon further inspection with a small camera it turned out the block itself cracked too.
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      10-18-2019, 11:25 PM   #9
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Usually a rod goes bye-bye and punches a hole in the block. The inertial forces are waaayyyy too high at those RPM's. Cracked/hole/etc, overspeed to 10k isn't a "well let's see" sort of thing, she's DONE. Bummer. Glad the driver was okay though.
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      10-19-2019, 03:24 PM   #10
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Quote:
Originally Posted by MrModZix View Post
The first thing they saw when they removed the oil pan was that the crankshaft broke into two pieces. Upon further inspection with a small camera it turned out the block itself cracked too.
Wow. Sorry dude.
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      10-19-2019, 08:24 PM   #11
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If I money shifted I would never tell anyone lol. Good to know you're ok. Could have ended much worse.
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      10-22-2019, 07:14 AM   #12
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Quote:
Originally Posted by Chris@VargasTurboTech View Post
5th to 2nd is a severe overspeed, that's around 10k rpm glad you're ok (even though the motor isn't).

The clutch might be ok depending on how much slip happened, but you have to weigh that against the convenience of having access so easily. The labor is basically free. Inspect it, sure, but if there is any wear or what not, IMO just replace.


Chris
Thanks for your insight. I asked the mechanic if he could look at the clutch and he's pretty certain it needs to be replaced. Besides, he said he has no room to store the parts if he takes out parts to look at the clutch.

I was the driver. I'm glad the car stayed straight and didn't go sideways.
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