Silicon hoses.. where to get it for good price

[DevilChrist]

Tim to guild up my engien again.. and I'm replacing all the rubber hoses (vac) with silicon. Anyone know a good place to get them at?.. I've looked at SRO store's price... and it that's a price per foot then that's a rip... sorry Ryan...

[yozsi]

actually napa auto parts has a really good price on silicon vacuum hoses.

[Moloko]

Be warned, many MANY mechanics advise against using them. I found this out too late, seeing how the ones I used on my shelby melted shut after a few days of being on the car causing it to stall and overheat.

[yozsi]

just get the kind that has resistance to heat, i know mine works up to 600 degrees. also dont use it around super hot parts, i.e. exhaust.

[Longroof]

Originally posted by Moloko
Be warned, many MANY mechanics advise against using them. I found this out too late, seeing how the ones I used on my shelby melted shut after a few days of being on the car causing it to stall and overheat.

It also has the tendancy to collapse under vacuum......

[yozsi]

Originally posted by Longroof
It also has the tendancy to collapse under vacuum......
only the ones that are 3/8 inch diameter or larger

[ryans]

nope, that per yard. I have a hosetechniques account. http://www.hosetechniques.com. I'll see what i can do.

[Moloko]

My hoses collapsed, wernt near heat, and ranged in size from 1/8 and up. They melted shut, and made the engine stall and it wouldnt restart until I removed the hoses.

[yozsi]

Originally posted by Moloko
My hoses collapsed, wernt near heat, and ranged in size from 1/8 and up. They melted shut, and made the engine stall and it wouldnt restart until I removed the hoses.
ok, well maybe you were using bad quality hoses? Because from my experience they last much longer than rubber vacuum hoses.

[Moloko]

Was using Spectre brand.

[Mr Rogers]

go steel lines everywhere. that would be sweet.

[Wolf]

I'd heard something about silicon being damaged by oil or gas? Is that true? How well does it withstand heat vs. rubber hoses? (Serious heat, like 750-1000 degrees).

[yozsi]

well your spark plug wires are made from silicone. and those last a real long time. unless they are resting on the exhaust manifold. Rubber is affected by gas and oil not silicon. The gas and oil will make rubber hoses expand and turn into goo. unless they are pcv, or gas lines.

[Wolf]

What about heat? Like silicon turbo hoses? The rubber hose on my compressor housing is a little gooey on the inside.

[yozsi]

the gooeyness on the inside of the copreesor couplers, is probably alittle oil mixed with condensation.

[DevilChrist]

actually silicone is not supposed to be used with chemicals.. there are different uses for different types of hoses...

I found this site.
http://www.mcmaster.com/
they have braided silicone hoses for good price..

Also as for them collapsing... stop using cheap ass silicone hoses.. get the thick walled. There are cheap silicone hoses that are made with really thin walls.. those will collapse under vacume. but normal car does not go more then 1 bar vac.(-14psi)

Durometer and tensile strength should be well considered. before using for any application

Ryan- ya hose technique is good brand nice thick walled hoses but their price is a rip. i can get braided hoses that can hold much more psi cheaper.
You're price is good price per yard, it's cheapest for hose technique i've seen.

[Moloko]

My car goes a lot more than 1 bar vacuum....

[DevilChrist]

oh?? what you're vacuum?..
for my wrx it's around -12psi.. and the supra is around -14-15...

and even still it's the cheap ass silicone hoses that collapse...

[yozsi]

my 240 z has about 25 inches of mercury. and my subie has about 22 in/hg. your wrx is messed up.

[DevilChrist]

umm. unless the stock guage's all jacked up my wrx is perfect...
it's new.. it's stock...
stock guage is a 3 bar sensor. reads' from -15 to 30...
wonder if NA's run more vac then turbo's...

the only time my car has more 15 vac is when the engine is in decel going down hill..

[yozsi]

well my subaru is turboed and like i said i get about 22 in/hg. and that is on a 200000 mile engine, with the turbo pushing 12 pounds.

[Wolf]

I get -18 at idle, and as much as -30 when I'm compression braking.

[DevilChrist]

22in/hg is .745 bar.. 10psi..

my bad my supra vacuum is ~60 kpa =( .6 bar)~10psi
na supra is suppose to be at 66kpa..

[yozsi]

lets clarify this, so pressure is measured in psi and bar's. so what is vaccum measured in? i thought it was in/hg. because you cant have negative pressure.

[Sniper]

Vacuum = negative pressure.....PSI, in/hg, Pa, and bar are all the same...just slap on the conversion formulae for each and you're set......