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alex yates
Shanghai
Shanghai


Joined: 06 Mar 2014
Posts: 10654
Location: Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Tue Aug 08, 2017 5:50 pm    Post subject: Reply with quote

trig_112 wrote:
Is there potential for a group buy of the redesigned item?



Can't see the point - they're only £28.
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2000 Manual 996 C4 Arctic Silver Convertible

 
  
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trig_112
Monza


Joined: 11 Apr 2014
Posts: 162
Location: Northants


PostPosted: Tue Aug 08, 2017 5:54 pm    Post subject: Reply with quote

alex yates wrote:
trig_112 wrote:
Is there potential for a group buy of the redesigned item?



Can't see the point - they're only £28.


Not from a cost perspective, more a "can't be arsed asking the reseller if it's the new design only to be sent the old design and having to sort it out" perspective.
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Harv
Suzuka


Joined: 18 Sep 2014
Posts: 1040



PostPosted: Tue Aug 08, 2017 10:53 pm    Post subject: Reply with quote

As I posted in Infrasilver's thread I don't believe the issue with these is really with the ear size, it's the width of them..

Reposted

There are a few different types of these inserts out there and thought I'd share pics of the ones i have.

Noticeable differences are the flanges on this version are much smaller and more in line with what Infrasilver has modded into.

But something of note is that the thickness of the flanges on mine which don't protrude past the width of the OE bush central metal section. I would say the the flanges need to float like the OE rubber spacers which are thinner than these (these are omitted when fitting the inserts) and if they don't and are wedged in between the gearbox nose mount and the horseshoe support then that is where all the NVH is coming from.



A
 
  
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alex yates
Shanghai
Shanghai


Joined: 06 Mar 2014
Posts: 10654
Location: Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Wed Aug 09, 2017 7:14 am    Post subject: Reply with quote

It is where it comes from, but they don't serve a purpose even when floating so why have them? It's the bush itself that does all the location and work.
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wasz
Albert Park


Joined: 28 Dec 2012
Posts: 1624


1999 Porsche 996 Carrera 2

PostPosted: Wed Aug 09, 2017 9:11 am    Post subject: Reply with quote

is it so that in an extreme case there is something to stop the gearbox moving too much?

i.e. if the bushing totally collapsed the box wouldn't waggle around loads.

But then again they don't do that with suspension bushes do they.
 
  
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alex yates
Shanghai
Shanghai


Joined: 06 Mar 2014
Posts: 10654
Location: Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Wed Aug 09, 2017 9:19 am    Post subject: Reply with quote

That was the only reason I could think of if the bush failed or was tremendously goosed. In the case of the powerflex inserts they need the outer face up against the carrier to act as a stop and prevent them moving out, but the inner part of the insert's outer face is adequate to do that. The rest of it is just non value added waste that has created a problem in itself.

Ps: Powerflex - forgot to mention, I'm a Toolmaker and own my own Engineering business. I currently make tooling for a local company specialising in moulded rubber parts. Quick turnaround and low cost. If you need help - get in touch Wink Thumb
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infrasilver
Fast & Furious
Fast & Furious


Joined: 04 Oct 2010
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Location: East Midlands

2001 Porsche 996 Targa

PostPosted: Sun Aug 13, 2017 8:57 pm    Post subject: Reply with quote

From when I installed mine it definitely needs to have a thinner side wall, if nothing else but to aid installation there wasn't much I could do about the thickness of it other than remove as much meat as I could around the sides without it allowing the insert to slide out as Alex/Harv mentions. If the Function 1st bush has this thinner side wall, that could be the main reason it is not as harsh. And also then the section I removed from between the inserts may not need removing?

If a standard bush collapsed it would still have nowhere to go other than dropping and causing huge amounts of vibration sat in the cradle. I assume the standard rubber side sheets are more of a dust shield and a cushion for sideways movement than anything but the insert does need something to stop it coming out.
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wasz
Albert Park


Joined: 28 Dec 2012
Posts: 1624


1999 Porsche 996 Carrera 2

PostPosted: Mon Aug 14, 2017 10:47 am    Post subject: Reply with quote

so...

would thinning the sides down a bit with a belt sander achieve the same result?
 
  
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alex yates
Shanghai
Shanghai


Joined: 06 Mar 2014
Posts: 10654
Location: Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Mon Aug 14, 2017 10:50 am    Post subject: Reply with quote

Personally I'd just do what Chris and I did. Works a treat and no added NVH. Inserts are sat fully in to the bush as they're meant to be and not clamped beteen any 2 metal surfaces. Just rubber against metal and rubber against rubber. By thinning them down you may allow lateral play that can exist in a worn bush.
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David Power
Newbie


Joined: 07 Aug 2017
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PostPosted: Tue Aug 15, 2017 5:00 pm    Post subject: Reply with quote

We do feel that the "ears" on the insert are required it was just that on our version they were in contact with both the gearbox and the carrier allowing a transmission of NVH.

Porsche supply rubber pads to go with the mount so there is obviously a risk of metal to metal contact in some circumstances, possible high shock loading.

We have reduced the thickness of these ears significantly now and have the new parts in production.

Replacements are going out to all that sent in their details to me.

Thanks for the help on this one and apologies to anyone that was unhappy with the original design.

Once again, if you have an old part, get in touch with us and we will send out the new design free of charge.
 



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57-530A render.png
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Harv
Suzuka


Joined: 18 Sep 2014
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PostPosted: Tue Aug 15, 2017 6:19 pm    Post subject: Reply with quote

Thumb
 
  
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infrasilver
Fast & Furious
Fast & Furious


Joined: 04 Oct 2010
Posts: 6988
Location: East Midlands

2001 Porsche 996 Targa

PostPosted: Tue Aug 15, 2017 6:31 pm    Post subject: Reply with quote

Agreed, looks spot on.
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alex yates
Shanghai
Shanghai


Joined: 06 Mar 2014
Posts: 10654
Location: Lancashire

2000 Porsche 996 Carrera 4

PostPosted: Tue Aug 15, 2017 7:10 pm    Post subject: Reply with quote

infrasilver wrote:
Agreed, looks spot on.


Snap.............but it's the faff of taking the old ones out and fitting the new. Would much prefer some commission based deal rather than a new set Laughing
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skinny_monkey
Spa-Francorchamps


Joined: 16 Sep 2014
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PostPosted: Tue Aug 15, 2017 7:53 pm    Post subject: Reply with quote

great, thanks David! Will confirm details on email

Cheers
John
 
  
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Locosaki
Monza


Joined: 03 Jul 2016
Posts: 156
Location: Fife


PostPosted: Tue Aug 15, 2017 8:24 pm    Post subject: Reply with quote

Yeah likewise, I've got the old design here untouched was going to alter but will happily send back.
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Locosaki
Monza


Joined: 03 Jul 2016
Posts: 156
Location: Fife


PostPosted: Wed Aug 16, 2017 7:43 am    Post subject: Gearbox mount Reply with quote

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Zub-911
Silverstone


Joined: 08 Jul 2013
Posts: 102
Location: Perth, Scotland


PostPosted: Wed Aug 16, 2017 10:15 am    Post subject: Reply with quote

Fantastic support there from Powerflex..

Thumb
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crash7
Monza


Joined: 28 May 2011
Posts: 168



PostPosted: Wed Aug 16, 2017 11:45 am    Post subject: Reply with quote

@David Power

When will the new design be available?

When ordering how do I ensure I get a newly designed item?

Cheers
 
  
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EGTE
Nürburgring


Joined: 06 Jul 2015
Posts: 439



PostPosted: Wed Aug 16, 2017 12:03 pm    Post subject: Reply with quote

Agreed. Thumb

In line with Top Gear Exhausts.Thumb

Stark contrast to Danske. nooo
 
  
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David Power
Newbie


Joined: 07 Aug 2017
Posts: 5



PostPosted: Wed Aug 16, 2017 12:47 pm    Post subject: Reply with quote

They are going into production now.

Where would you normally order from Crash7?

If they have stock, we will replace that and tell them to ensure it is the new design and to mail me directly and I will ensure they receive the correct one.

All stock here has been destroyed so the only way you may get an old design is if the distributor has old stock and is not aware of the exchange.

All the best

David
 
  
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