Hello,
I'm new here but as the original owner of my 1996 SR5 I've been caring for my Toyota for a long time. She has a little over 200k with several upgraded items: radiator, 17" 5h gen Toy wheels, and Tundra front caliper/disk. So it's high time for me to replace the aged, dehydrated vacuum hoses for my 3.4. I need help, if anyone can share a list what size hoses (since they vary) required? And where to shop or best place to get them at fair cost? I like the newer colored hoses which adds a little zest under hood. For now the list of numbers is huge help. Thanks in advance!
Peter Landy

 

Personally I would stay away from aftermarket vac lines as they are usually poor quality and will last 1/4 as long as the OE Vac lines and cause you issues, go to Toyota and buy quality Vac lines that will last 25 years or more, there really isn't much in the way of Vac lines,.. mine are all original and I'm not planning on changing them until a Vac/Pressure test says I have a leak or I observe cracking/swelling of Vac lines, even on my old 92' Mitsu running boost water/meth it still has all the original lines because anything I put on there aftermarket broke down within a few years., yes there are a few good suppliers out there for aftermarket lines with colour, but you will have to test them out on your daily driver..

 

Good advice Malcom99. I've had second thoughts about the silicon tubes. Will stick with OEM rubber. My reason for going ahead with replacement because some of the tubes are splitting .... so it's time. Thank you!

 

This is what I bought for my 98. So far so good. I'm typically a fan OEM, but I seriously doubt these are going to start falling apart anytime soon.

 

Right, a lot of people seem happy with silicon tubing. However, they may not hold up in extreme situations which could strike in the most expected places leaving a car stranded. After some research, I read a testimony from a user whose battery exploded, showering acid all over the engine. The silicon tubings ended up riddled with tiny, perforated holes while the rubber tubing were unaffected. So, yes, thanks for your input. I suppose in most normal cases, barring unusual circumstances, silicon should be ok. However, I'm open to anyone's demonstration which proves that silicon tubing will survive battery acid.

 

Silicone is not resistant to most acids or gasoline, but is compatible with ethylene glycol, brake fluid and oil. The police interceptor crown victorias used silicone coolant hoses because of the durability. I prefer rubber over silicone for vac lines because many of the evap hoses take in gasoline vapor which can degrade the silicone over time.

 

Yep, thanks for the interesting input. So there you go, much better to play it safe with rubber.

 

What are we talking about again?..