Braided Brake Hoses

[Andy97]

Hi
I am looking for a set of Goodridge type braided brake hoses for a 944 Turbo fitted with the Mo30 brakes but the usual web sites and Demon Tweeks only list a 944 "S1 or S2". Do these fit or do I need them made up specially?
Anyone got any ideas what i can do - I'd like them fitted for saturday as I'm at a track day!

 

[Lancerlot]

Try Exact Engineering 01803 866464. They'll make up the hoses for you and supply the correct adapters; alternatively they will supply the parts so you can make the hoses up yourself - it's quite easy.
I would recommend stainless steel fittings rather than plated mild steel for obvious reasons. They also do the blue and red annodised alluminium connectors, but these are not really suitable for road cars.
Regards.

 

[944turboS]

Give Stuart a call (968 Reg. Sec.) He is a dealer for Goodridge & his prices are reasonable. http://www.k300.com

 

[Andy97]

Thanks all, I have some on the way from Promax motorsport, being fitted today ready for Cadwell tomorrow!

 

[944Turbo]

Bert at berlyn always says that braided rears will fail, he has been syaing it for at least 5 years though, and I only recall one failure - might be worth inspecting them regularly though.
Tony

 

[Big Dave]

Hi Andy
Did you have a good time at Cadwell yesterday...?????

I was there in a Cobalt blue 944S2.. I was parked with the 968 clan....

It was a great day....If a bit slippy in the AM....[][][][]

 

[Hilux]

Bert at berlyn always says that braided rears will fail

Why??

Do they have a hard time with movement, restrictions?

 

[Peter Empson]

Bert didn't recommend them because he said the rear hoses are very short resulting in excessive wear. The braiding of course also hides everything so you cant keep an eye on how they're wearing either.

However personally I have them fitted to my car, I figured that I have less suspension movement than a standard car which might help and also plan to change them regardless every few years just to be on the safe side.

Best regards,
Peter.

 

[Andy97]

Hi Big Dave
I did enjoy myself - awesome circuit, never even spectated there before. How did they ever race F3 cars their in the 1980's? I did come over to say hi to the 968 Clan. The car behaved very well (apart from a spin early on!) but the Elises & Caterhams, & even the new Mini, were quicker than me but I did improve with the help of an instructor. A great investment.

 

[Lancerlot]

ORIGINAL: Peter Empson

Bert didn't recommend them because he said the rear hoses are very short resulting in excessive wear. The braiding of course also hides everything so you cant keep an eye on how they're wearing either.

If the hoses are the same length as the standard items and routed the same way there should be no reason for deterioration.

These hoses usually have a Teflon liner that's particularly resistant to kinking and decomposition and should therefore last a very long time providing you avoid any possibility of abrasion and ensure there is sufficient free movement to cope with suspension and steering inputs.

In some 40 years of using these hoses there have been only a handful of times I have seen failures and it has always been as a result of poor routing or some ineffective securing, resulting in wheel/tyre abrasion or the suspension crashing out and crushing the liner.

You do need to keep an eye on the fittings however to ensure they don't work loose and cause a hydraulic leak. I generally use a dab of paint on each fitting so you can easliy see when a nut is beginning to loosen off. I hope this helps.

Regards

 

[944Turbo]

I had a feeling it was abrasion due to the fairly tight radius bend in them and suspension movement. The abrasion is hidden by the braid that does the abraiding - drop Bert an email I am sure he will fill you in - say Tony (Sidestream) mentioned it here,
Tony

 

[Peter Empson]

I've found Bert's original email and think I've relayed his comments correctly, although I'm hesitant to repost the original email without permission (even though it was posted on a mailing list).

There was also a note that he'd seen complete brake failure on a car when both rear hoses failed because of this problem.

Best regards,
Peter

 

[Lancerlot]

I have spoken to Bert today. It was a 924S that suffered failure of both rear hoses simultaniously. It was not fully investigated but was thought to be due to the very short length of these particular hoses causing some internal abrasioning.

I have never experienced or previously heard of this myself and it seems unlikely that both would fail at the same time, but anything is possible.

Stretched hoses will be vulnerable if there is insufficient freedom of movement to allow for adequate suspension articulation. Also, I once had a case where the telfon liner melted although there was no heat source immediately nearby. Would anyone care to hazard a guess as to how this could come about?

 

[Fen]

ORIGINAL: Lancerlot
I once had a case where the telfon liner melted although there was no heat source immediately nearby. Would anyone care to hazard a guess as to how this could come about?

Sounds like one for Derek Acorah.

 

[Lancerlot]

ORIGINAL: Fen

Sounds like one for Derek Acorah.

Gypsie Rose Lee is a better bet!

 

[Lancerlot]

ORIGINAL: Lancerlot

I once had a case where the telfon liner melted although there was no heat source immediately nearby. Would anyone care to hazard a guess as to how this could come about?

Well I know you're just bustin' to know........
The earthing strap to the engine had fractured so the current was passing through the metal braid of the brake hose. As the resistence built up, the heat generated melted the inner liner resulting in sudden failure!

 

[sawood12]

The Goodrich hoses have a clear film of plastic over the braid so the braid is not exposed so hopefully any electrical shorts shouldn't be a problem - unless it shorts via the unions.

 

[Fen]

I think in the case Lancerlot describes the braided lines would just work like any other insulated cable even if they had plastic around them.

I think the plastic coating is more to keep them shiny and to stop them abrading through other things they might rub against.

 

[Lancerlot]

ORIGINAL: Fen

I think in the case Lancerlot describes the braided lines would just work like any other insulated cable even if they had plastic around them.

I think the plastic coating is more to keep them shiny and to stop them abrading through other things they might rub against.

Quite right. The hose braid was in effect acting as the engine's earthing strap. Following repairs we introduced a second earth strap - just to make sure - and had no re-occurrence of the problem.[]