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Possible to convert MK2 GT3 Centerlock to 5 Bolt?

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Old 09-27-2010, 11:05 AM
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GT3
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Question Possible to convert MK2 GT3 Centerlock to 5 Bolt?

Any ideas?
How easy or difficult?
Cost to do so?
Thanks.

Lets start making an unofficial list of those interested for now:

1. GT3
2. DJN?
3. DD GT3 RD?
4. TRAKCAR?
5. brim
6.
7.
8.
9.
10.

I'll be updating the list, as more are interested or not.

Last edited by GT3; 09-28-2010 at 05:34 PM.
Old 09-27-2010, 12:06 PM
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911SLOW
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Just for the fun of it I checked the parts lists and it seems that:

Apart from the obvious 5l wheels and lugs and maybe spacers you need

Rear axle :
wheel carriers are same and you only need 2x wheel hubs from the 2008gt3 997 331 606 00
everything else is same angular bearing, carrier lid, bolt etc.

Front axle :
the wheel hub has a different number and also the tension bolt is different but maybe they can be used.
Surely again you need 2x wheel hub 997 341 60 501 from the 2008gt3 and 2x wheel carrier lids 996 341 661 90 again from the 2008gt3.

Could it be that easy? Or I am missing something.
Interesting.

John
Old 09-27-2010, 12:45 PM
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GT3
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Thank for the info John.

I just call Suncoast parts,

The rear: wheel hubs are $320 each and rear carrie lids are $17 each.

The front wheel hubs are: $291 each and front carrier lids are $48 each.

$1352 total so far. They are confirming if anything else might be needed.

I hope its that easy

Last edited by GT3; 09-28-2010 at 06:30 PM. Reason: Wheel hubs, not carriers, are priced.
Old 09-27-2010, 01:13 PM
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Originally Posted by GT3
Thank for the info John.

I just call Suncoast parts,

The rear: wheel carriers are $320 each and rear carrie lids are $17 each.

The front wheel carriers are: $291 each and front carrier lids are $48 each.

$1352 total so far. They are confirming if anything else might be needed.

I hope its that easy


i actually spent much that to convert my 07 GT3 to wheel studs..... so it is not so bad...
Old 09-27-2010, 03:03 PM
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Larry Cable
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Originally Posted by 911SLOW
Just for the fun of it I checked the parts lists and it seems that:

Apart from the obvious 5l wheels and lugs and maybe spacers you need

Rear axle :
wheel carriers are same and you only need 2x wheel hubs from the 2008gt3 997 331 606 00
everything else is same angular bearing, carrier lid, bolt etc.

Front axle :
the wheel hub has a different number and also the tension bolt is different but maybe they can be used.
Surely again you need 2x wheel hub 997 341 60 501 from the 2008gt3 and 2x wheel carrier lids 996 341 661 90 again from the 2008gt3.

Could it be that easy? Or I am missing something.
Interesting.

John
if this works it could be a great modification to get away from the CLs ...
Old 09-27-2010, 03:15 PM
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DJN
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Hi Gents,

Can someone post some comparison schematics from the Workshop manuals?

Thanks,

Doug N.

PS. I have not liked the idea of centerlocks on my 997.2 GT3 since before my order was locked. I liked it even less when Porsche provided only a socket to deal with them. While I invested in the tools, I still don't like the additional hassles. Now with the "extra measures" of Torque etc.... I ain't too #$@ing pleased at all.
Old 09-27-2010, 03:16 PM
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Carrera GT
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What's the imperative to "get away" from center-locks?
The new torque and grease procedure just isn't that burdensome.
I've noted only one case of a wheel bearing problem.
Old 09-27-2010, 03:30 PM
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Larry Cable
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Originally Posted by Carrera GT
What's the imperative to "get away" from center-locks?
The new torque and grease procedure just isn't that burdensome.
I've noted only one case of a wheel bearing problem.
more choice of aftermarket wheel options? slightly less hassle ... the joy of reading mikymu's "DIY CL to lug conversion" posting?
Old 09-27-2010, 03:41 PM
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Carrera GT
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Originally Posted by Larry Cable
more choice of aftermarket wheel options? slightly less hassle ... the joy of reading mikymu's "DIY CL to lug conversion" posting?
The wheel choice is opening up. Still, I read according to CCW that the engineering analysis of centerlocks determined that the hub design would be heavier than the five slug. In technical terms, "big woop" ... : )

Sadly, we don't see Mike's DIY multi-media presentation on CL conversion unless he first puts them on his car in order to take them off.
Old 09-27-2010, 03:45 PM
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Larry Cable
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Originally Posted by Carrera GT
The wheel choice is opening up. Still, I read according to CCW that the engineering analysis of centerlocks determined that the hub design would be heavier than the five slug. In technical terms, "big woop" ... : )

Sadly, we don't see Mike's DIY multi-media presentation on CL conversion unless he first puts them on his car in order to take them off.
I was thinking he could do it to your car or mine!
Old 09-27-2010, 03:46 PM
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TeamDrugMoney
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Guys! Great idea to migrate away from the CL wheels. After yo do so please contact me to sell me your rims. I am serious!
Old 09-27-2010, 03:50 PM
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Carrera GT
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Originally Posted by TeamDrugMoney
Guys! Great idea to migrate away from the CL wheels. After yo do so please contact me to sell me your rims. I am serious!
Doh!

True. Smart.

I call dibs for seconds on any other CL take-offs (in 19's) ... wide body ... : )
Old 09-27-2010, 04:12 PM
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Originally Posted by Carrera GT
What's the imperative to "get away" from center-locks?
The new torque and grease procedure just isn't that burdensome.
I've noted only one case of a wheel bearing problem.
For me, it is to install Dymag wheels (5-bolt for GT3 that made in 2009 with the aluminum/magnesium centers Vs the Magnesium only center the made before 2009).

I had a 2009 set on my 2008 M3, and the wheels were amazing, zero issues even under hard tracking. The car's better road connection alone, is worth it for me. Add the fact that I wont have to worry about the CL tightening steps, carrying a torque bar, worry about changing a flat in the middle of nowhere without the right tools, not having to flatbed the car because of it, and lower unsprung weight: Priceless

If Dymag was still in business and made a CL wheel for the Mk2 GT3, I might still be looking to change to to 5-bolt...

I highly doubt I'll sell any of the parts, but I'll keep it in mind.

Last edited by GT3; 09-27-2010 at 04:41 PM.
Old 09-27-2010, 04:48 PM
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GT3,

there is a kit that converts 5 lug to CL from porsche. it's not expensive < $2000
so i would think the reverse would be in the same ball park.
i dont want to tie up sun coast's line. since u are working with them, perhaps you can get them to confirm and put together a "kit" to sell on their site.

on 6speedonline, suncoast did ask what type of products the users wnat them to sell. well. this is one of them.
Old 09-27-2010, 06:42 PM
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Originally Posted by Carrera GT
What's the imperative to "get away" from center-locks?
The new torque and grease procedure just isn't that burdensome.
I've noted only one case of a wheel bearing problem.
It was already enough extra effort.....now it's even more. Just wait unit the wheels start "flying" in the future (although, I sincerely hope this is not the case).

Until I decide what to do, I will continue to be "ultra-extremely" diligent with torquing procedure and pre-track retorquing. A major pain in the butt.

Doug N.


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