Changing vacuum lines for silicone

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14 October 2010, 10:32 AM

muttleyturbo

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Changing vacuum lines for silicone

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Last edited by muttleyturbo; 07 August 2013 at 02:03 AM.

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14 October 2010, 10:46 AM

Butty

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The biggest con is cheap silicon splits and breaks up when near heat, which isn't good for boost or vacuum signal lines.

Wurth hose is a very robust material.

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14 October 2010, 11:51 AM

Glowplug

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I use this. Try Samco 4mmx3m

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14 October 2010, 12:04 PM

DDS789

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Ive used the silicone hoses from ebay and they're completely fine. Its the same silicone hosing brand you see forsale at jap shows etc. I cant see samco named stuff being much better if not exactly the same IMO.

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14 October 2010, 12:22 PM

Glowplug

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Reputable branded hose or a bit of 'blue' off ebay?

For the sake of 3 quid more, it's a no brainer for me.

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14 October 2010, 05:24 PM

DDS789

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Fair point, iv used both and can say there's no difference. IMO obviously ;-)

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14 October 2010, 05:33 PM

Glowplug

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Quote:

Originally Posted by DDS789

Fair point, iv used both and can say there's no difference. IMO obviously ;-)

Fairy nuff.

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15 October 2010, 02:47 PM

Dutch Scooby lover

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A mate used the cheap stuff and boost control was right out the window, even with much fiddling with the Apex boost controller the boost was either overshooting like a bugger one moment, and not even coming close to reaching target levels the next.

Swapped out the cheap stuff with rubber fuel lines, and hey presto , rock solid, stable boost.

The hose he had was just silicone, with no textile reinforcements (like a Samco hose usually has)
Maybe there is cheaper hose then Samco, which does have the textile/nomex inserts, THAT could work, but the non-reinforced stuff does not work imho.

Last edited by Dutch Scooby lover; 15 October 2010 at 02:49 PM.

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15 October 2010, 04:23 PM

KAS35RSTI

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Quote:

Originally Posted by muttleyturbo

In an attempt to tidy up the engine bay and to replace a hose that has split I want to change some of the vacuum lines in my engine bay.

I understand the internal diameter of the vacuum lines are 4mm?

Would the be a good choice...

http://cgi.ebay.co.uk/4MM-BLUE-SILIC...item335fc4e675

Would this be a good idea to replace the lines with the above, would they be better than the stock lines?

Any pro's / con's, things I should know before doing this?

Thanks in advance

(my car is a UK MY98 Turbo2000)

They look too soft. The stock ones are good or as said get some fuel hoses.

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15 October 2010, 04:37 PM

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Glowplug

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One piont to mention. If you are replacing the hoses connected to the BCS then do not forget, there is a small restictor pill in the very bottom hose on a 3 port. If yours is a 2 port, then the pill is in the hose from the turbo to T piece.

Last edited by Glowplug; 15 October 2010 at 04:39 PM.

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15 October 2010, 04:44 PM

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timmyajmy93wrx

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Quote:

Originally Posted by b13bat

I use this. Try Samco 4mmx3m

nice one i have been looking for some, cheers

deffo have the 'branded' over fleabay tat

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15 October 2010, 05:55 PM

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markjmd

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Quote:

Originally Posted by Dutch Scooby lover

Swapped out the cheap stuff with rubber fuel lines, and hey presto , rock solid, stable boost.

+1 for that. Motorbike spares suppliers are a good source for smaller diameter lines, as most car-parts places don't seem to have it lower than 5 or 6mm.