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Newbe
Trainee


Joined: 21 Apr 2019
Posts: 67



PostPosted: Sat Feb 01, 2020 6:55 pm    Post subject: What coffin arm makes are good?? Reply with quote

Hi All

After some advice on what coffin arms to buy.

I’m going to replace the lot including tuning forks.

Looking around and there’s lots of makes?

What’s a good brand to go for???
 
  
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7829
Location: Brighton


PostPosted: Sat Feb 01, 2020 7:17 pm    Post subject: Reply with quote

I would query why you are replacing them .. coffin arms and delamination in the bushes then fair enough .. but all 4 ? somewhat unusual and i'm not a fan or replacing parts without a reason .. sorry .

Diag arms and if you have no knocking noises on bumps then they don't really need replacing as it wont .. IMHO make any difference to the handling of the car .

TRW is i believe OEM but not cheap hence if no real reason stick with what you have over fitting a cheaper make .. thats what im thinking anyways .
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Newbe
Trainee


Joined: 21 Apr 2019
Posts: 67



PostPosted: Sat Feb 01, 2020 9:42 pm    Post subject: Reply with quote

Cheers for the reply.

I was going to get geo/tracking done. When I done the top suspension mounts I noticed the rubbers bushes on the coffin arms were dried out and cracked. I don’t have any knocking but I didn’t want to spend out on 4 wheel tracking for then to fail. They look original, TBH it’s the fronts rather than rears.

I did think about just changing the bushes but I imagine it would be hard the get the ball joint out without damaging the boot around the ball joint.
 
  
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Nürburgring


Joined: 10 May 2018
Posts: 446
Location: Hampshire


PostPosted: Sun Feb 02, 2020 12:57 pm    Post subject: Reply with quote

Hello Newbe, when I had my 997 I bought coffin arms and tuning forks from "Spyderperformance" (look on Ebay). Chris at Center Gravity fitted them and they were fine. IIRC a set of two coffins with two tuning forks was around £300 at the time.

More generally, suspension brand names that are supposed to be good include (but not limited to) Meyle, TRW, Febi, Lemforder and JP Dansk.

It is bewildering though, because (for example) a genuine Porsche rear control arm for my 993 is £360, or Design911 offer a "Retro Line" one for £120, or you can get one branded "Triscan" from Ebay for £41! Then there's refurbished items from Hartech done on an exchange basis........

Even the cheap items claim to be "fully guaranteed" so I have no idea how a bumbling amateur like me is supposed to know. An email to Center Gravity is a good idea, they always reply promptly and they know their Porsche onions.
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Newbe
Trainee


Joined: 21 Apr 2019
Posts: 67



PostPosted: Sun Feb 02, 2020 3:27 pm    Post subject: Reply with quote

Thanks for the reply.

You’re quite right on the prices. A piece of ally and some rubber, they can’t be that different!!

I have looked at the spydy ones and the others, I may even replace them with Powerflex bushes? Don’t know yet?
 
  
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Alfaian
Imola


Joined: 12 Mar 2014
Posts: 833
Location: S.wales


PostPosted: Sun Feb 02, 2020 4:16 pm    Post subject: Reply with quote

Hi, I put meyle lower coffin arms on my 997 and lemforder top mounts with febi top bearings,bump stops and gators and all is well. As for diagonal fork arms then, check them for play and leave them alone for now. They are very robust.

Power flex bushes are good but can be expensive if you have to pay someone to fit them. It's time consuming.

So, meyle, lemforder and febi are all good equipment.

Good luck

Ps. Febi are part of bilstein. Thumb
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RXP.
Monza


Joined: 24 Oct 2017
Posts: 220



PostPosted: Mon Feb 03, 2020 11:19 am    Post subject: Reply with quote

Agree with all of the above.

However just to add, you didn't mention if you have PASM or are lowered at all? If so the RSS arms are worth considering.
 
  
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7829
Location: Brighton


PostPosted: Mon Feb 03, 2020 7:28 pm    Post subject: Reply with quote

If you have no knocking noises ... on diagonal arms ... this starts to happen at around 50K on the original ones then i would suggest save your money on these ..

Diagonal arms don't really get play in them at least i've never seen it .. they just make noise and as such won't affect a geo .

Coffin arms then if worn bushes fair enough .
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She's not going until july 2020 though .



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wasz
Paul Ricard


Joined: 28 Dec 2012
Posts: 3067


1999 Porsche 996 Carrera 2

PostPosted: Mon Feb 03, 2020 9:14 pm    Post subject: Reply with quote

TRW made them for Porsche, if you can find em get em because they stopped supplying them aftermarket.

Meyle OK second choice but a little heavier and some say the bush is soft - allowing too much movement on a turbo, but not really noticeable on a carrera
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James M-S
Suzuka


Joined: 11 Apr 2017
Posts: 1144
Location: Derbyshire

2009 Porsche 997 Carrera 2

PostPosted: Mon Feb 03, 2020 9:42 pm    Post subject: Reply with quote

I went for meyle, after my MoT tester detected play, that I hadn’t noticed.

When it was removed, I could see he was right. Changed the other side as well.
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