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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 16541
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Fri Apr 26, 2019 3:54 pm    Post subject: Reply with quote

I watched it again last night and got a better idea of how bad it was:

When Ant was hammering that IMS replacement bearing into the shaft you can see the engine swinging on the engine mounts. The engine obviously wasn't supported very well on the stand (not enough to be belting with a mallet anyway). I dread to think what internal damage he's potentially done nooo

The cab roof rear window was mullered and in desperate need on a new one fitting. Alloy wheel also needed refurbing with chunks missing out of them.

His comment about the bearing feeling like it was full of sand was a blatant lie.

1/4 of a pint of oil comes pouring out the shaft once the bearing was removed, proving that engine oil had been lubricating the bearing.

There was plenty of stuff they should've been spending their $$$$ on instead of promoting some dodgy after-market snake oil fix and wrapping the centre console. All in all a very poor episode packed with lie after lie.

Wonder how long it'll be before the new owner is on rennlist wondering why his engine needs rebuilding. Grin
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ursicles
Spa-Francorchamps


Joined: 03 Jun 2014
Posts: 303
Location: Orpington, Kent


PostPosted: Fri Apr 26, 2019 7:31 pm    Post subject: Reply with quote

They often do random no value stuff to car's.

Think car SOS and the way they restore a car is so much better.
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mikeluke
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Joined: 03 Jun 2014
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PostPosted: Fri Apr 26, 2019 7:38 pm    Post subject: Reply with quote

Never let facts get in the way of a good TV programme!

Smile
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 16541
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Fri Apr 26, 2019 10:18 pm    Post subject: Reply with quote

Like a Scouser once said to me - "Never let the truth spoil a good story"

Same bloke - "You can tell a Prick, but you can't tell him much"
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rigsby99
Monza


Joined: 22 Oct 2015
Posts: 202
Location: South Cheshire


PostPosted: Sat Apr 27, 2019 7:41 am    Post subject: Reply with quote

Alex wrote:
I watched it again last night and got a better idea of how bad it was:

When Ant was hammering that IMS replacement bearing into the shaft you can see the engine swinging on the engine mounts. The engine obviously wasn't supported very well on the stand (not enough to be belting with a mallet anyway). I dread to think what internal damage he's potentially done :nooo:

The cab roof rear window was mullered and in desperate need on a new one fitting. Alloy wheel also needed refurbing with chunks missing out of them.

His comment about the bearing feeling like it was full of sand was a blatant lie.

1/4 of a pint of oil comes pouring out the shaft once the bearing was removed, proving that engine oil had been lubricating the bearing.

There was plenty of stuff they should've been spending their $$$$ on instead of promoting some dodgy after-market snake oil fix and wrapping the centre console. All in all a very poor episode packed with lie after lie.

Wonder how long it'll be before the new owner is on rennlist wondering why his engine needs rebuilding. :grin:


It's a TV show for Gawds sake, not a engineering instructional video. The oil coming out of the bearing aperture is not much use to a sealed bearing.
 
  
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 16541
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Sat Apr 27, 2019 7:51 am    Post subject: Reply with quote

Well the bearing obviously wasn't sealed otherwise the oil couldn't have got in there could it.
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rigsby99
Monza


Joined: 22 Oct 2015
Posts: 202
Location: South Cheshire


PostPosted: Sat Apr 27, 2019 8:07 am    Post subject: Reply with quote

Alex wrote:
Well the bearing obviously wasn't sealed otherwise the oil couldn't have got in there could it.


All the original bearings were sealed, one of the fixes was to remove the seal and allow the crank case oil to access the bearing.
 
  
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maldren
Suzuka


Joined: 07 Oct 2016
Posts: 1122



PostPosted: Sat Apr 27, 2019 8:10 am    Post subject: Reply with quote

and was a leather covered centre console ever an original option?
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2003 996.2 C2 Coupe Arctic Silver
 
  
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 16541
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Sat Apr 27, 2019 8:13 am    Post subject: Reply with quote

rigsby99 wrote:
Alex wrote:
Well the bearing obviously wasn't sealed otherwise the oil couldn't have got in there could it.


All the original bearings were sealed, one of the fixes was to remove the seal and allow the crank case oil to access the bearing.


I know - I removed my seal years ago. It is only a dust shield and over time warps. Once it does, engine oil gets in there to lubricate the bearing. The only way oil can get into the shaft (as seen in the program) is if this has happened.
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rigsby99
Monza


Joined: 22 Oct 2015
Posts: 202
Location: South Cheshire


PostPosted: Sat Apr 27, 2019 8:13 am    Post subject: Reply with quote

This was the first time I have seen a bush used as a replacement. Interesting to hear of any experience or feed back on such a fix, Doesn't seem a good idea at all to me.
 
  
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 16541
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Sat Apr 27, 2019 8:15 am    Post subject: Reply with quote

maldren wrote:
and was a leather covered centre console ever an original option?


Not as I'm aware of. Would've looked far better and more standard to just colour code it Arctic Silver.
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 16541
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Sat Apr 27, 2019 8:21 am    Post subject: Reply with quote

rigsby99 wrote:
This was the first time I have seen a bush used as a replacement. Interesting to hear of any experience or feed back on such a fix, Doesn't seem a good idea at all to me.


Me neither. It's been talked about in the past. Here's my view on it:

Pros:
Solid stronger bearing that should last as long as the front end ims bearing.

Cons:
Robbing vital oil (pressure) from other engine components.
Risk damaging the oil pipe that's exposed running under the car. Rupturing it would be catastrophic and seize the engine.
Bastardising the flywheel housing and oil filter housing.


Imagine driving your car with a hole in your oil filter allowing oil to escape somewhere else. Fair enough, it ends up back in the sump, but even so - just sounds foolish to me.
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rigsby99
Monza


Joined: 22 Oct 2015
Posts: 202
Location: South Cheshire


PostPosted: Sat Apr 27, 2019 8:22 am    Post subject: Reply with quote

Alex wrote:
rigsby99 wrote:
Alex wrote:
Well the bearing obviously wasn't sealed otherwise the oil couldn't have got in there could it.


All the original bearings were sealed, one of the fixes was to remove the seal and allow the crank case oil to access the bearing.


I know - I removed my seal years ago. It is only a dust shield and over time warps. Once it does, engine oil gets in there to lubricate the bearing. The only way oil can get into the shaft (as seen in the program) is if this has happened.


Dust shield ? Where does dust come from? It is there to seal and contain grease within the bearing, when that breaks down the bearing fails. Porsche presumably thought that there would be insufficient lubrication from crank case oil, in practice it seems there is.
 
  
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rigsby99
Monza


Joined: 22 Oct 2015
Posts: 202
Location: South Cheshire


PostPosted: Sat Apr 27, 2019 8:26 am    Post subject: Reply with quote

Alex wrote:
rigsby99 wrote:
This was the first time I have seen a bush used as a replacement. Interesting to hear of any experience or feed back on such a fix, Doesn't seem a good idea at all to me.


Me neither. It's been talked about in the past. Here's my view on it:

Pros:
Solid stronger bearing that should last as long as the front end ims bearing.

Cons:
Robbing vital oil (pressure) from other engine components.
Risk damaging the oil pipe that's exposed running under the car. Rupturing it would be catastrophic and seize the engine.
Bastardising the flywheel housing and oil filter housing.


Imagine driving your car with a hole in your oil filter allowing oil to escape somewhere else. Fair enough, it ends up back in the sump, but even so - just sounds foolish to me.


It won't affect the oil pressure, it's not an open ended pipe and if it did you might notice a red light.
 
  
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 16541
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Sat Apr 27, 2019 8:28 am    Post subject: Reply with quote

It is refereed to in the industry as a dust shield. Sealed bearings are designed to be used in an open atmosphere. The shields are there not only to hold grease in but also stop any unwanted particles getting in there.


There you go: http://www.manujaipur.com/dust-shields.php
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Last edited by Alex on Sat Apr 27, 2019 8:31 am; edited 1 time in total
 
  
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 16541
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Sat Apr 27, 2019 8:29 am    Post subject: Reply with quote

rigsby99 wrote:

It won't affect the oil pressure, it's not an open ended pipe and if it did you might notice a red light.


It won't affect the overall oil pressure but will affect the pressures required at each individual component (So Hartech tell me - or are they wrong?).
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rigsby99
Monza


Joined: 22 Oct 2015
Posts: 202
Location: South Cheshire


PostPosted: Sat Apr 27, 2019 8:41 am    Post subject: Reply with quote

Alex wrote:
It is refereed to in the industry as a dust shield. Sealed bearings are designed to be used in an open atmosphere. The shields are there not only to hold grease in but also stop any unwanted particles getting in there.


There you go: http://www.manujaipur.com/dust-shields.php


Indeed as wheel bearings etc ,but not in this application.
 
  
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rigsby99
Monza


Joined: 22 Oct 2015
Posts: 202
Location: South Cheshire


PostPosted: Sat Apr 27, 2019 8:48 am    Post subject: Reply with quote

Alex wrote:
rigsby99 wrote:

It won't affect the oil pressure, it's not an open ended pipe and if it did you might notice a red light.


It won't affect the overall oil pressure but will affect the pressures required at each individual component (So Hartech tell me - or are they wrong?).


Oh really, so a pressure fed gauge would have the same effect? It obviously depends on where the tapping is. If you wish to quote Hartech then, for their sake, make sure you get the context right.
 
  
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Alex
Le Mans
Le Mans


Joined: 06 Mar 2014
Posts: 16541
Location: The Ribble Valley, Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Sat Apr 27, 2019 8:52 am    Post subject: Reply with quote

So do you think that by fitting a pipe in the side of the oil filter that allows oil to be pumped to the other end of the shaft have zero effect on pressure at (for example) the crank bearings or cam shafts?
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rigsby99
Monza


Joined: 22 Oct 2015
Posts: 202
Location: South Cheshire


PostPosted: Sat Apr 27, 2019 9:04 am    Post subject: Reply with quote

Alex wrote:
So do you think that by fitting a pipe in the side of the oil filter that allows oil to be pumped to the other end of the shaft have zero effect on pressure at (for example) the crank bearings or cam shafts?


No it wouldn't as long as the bearing, oil cooler, gauge etc didn't leak or, in the case of a bearing was tight enough to maintain the pressure. Worn main bearings will show a drop in oil pressure assuming that the pressure control system cannot compensate.

Last edited by rigsby99 on Sat Apr 27, 2019 9:05 am; edited 1 time in total
 
  
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