| [ Total Views: 1726 | Total Replies: 12 | Thread Id: 87565 ] |
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 Pickpocket
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| posted on December 10th, 2010 at 03:28 AM |
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Surge tank material
I've noticed in a few projects that some people have used aluminum or stainless steel for their surge tanks. One car I found yesterday used PVC.
Are there any long term effects of using PVC with gasoline?
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HappyDaze
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| posted on December 10th, 2010 at 05:49 AM |
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When it comes to fuel, use the SAFEST material, not the cheapest - it will be less costly in the long run.
I'd rather wear a Beetle out by racing it than by polishing it!
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pete wood
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| posted on December 10th, 2010 at 08:09 AM |
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| Quote: | Originally
posted by Pickpocket
I've noticed in a few projects that some people have used aluminum or stainless steel for their surge tanks. One car I found yesterday used PVC.
Are there any long term effects of using PVC with gasoline?
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umm, don't go there. I think you'll find steel is cheaper... and safer. that's what mine is made from.
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 vw54
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| posted on December 10th, 2010 at 11:04 AM |
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Most fuel tanks are made from PVC these days
as they can blow form them into any shape to fit perculiar place on the car
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pete wood
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| posted on December 10th, 2010 at 02:25 PM |
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mmm, interesting. be a bit different than making a home made tank from pipe though
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Adsman
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| posted on December 11th, 2010 at 12:34 AM |
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plastics and fuels inc. methanols, ethanols, other additives as well may not necessarly agree. Joints/welds more prone to damage than metal. Plastics
do have a UV and chemical exposure life and are vary greatly. Also be aware the aluminium can react with some fuel additives and steel is prone to
rusting and blocking. If its on a road car running pump gas then aluminium, stainless or steel is fine. Honestly you can get one made or buy one off
ebay for under $100 so not worth the effort. IMHO
What my garage isn't messy........Well chaos is a form of order isn't it?
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Pickpocket
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| posted on December 11th, 2010 at 04:14 AM |
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| Quote: | Originally
posted by vw54
Most fuel tanks are made from PVC these days
as they can blow form them into any shape to fit perculiar place on the car
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You did bring up an interesting point there. My 1987 Porsche and my 1996 Chevrolet both have plastic gas tanks. No leaks, no problems. My steel
tank in my Superbeetle on the other hand.....not so good.
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Inane Cathode
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| posted on December 11th, 2010 at 04:58 PM |
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I have a pvc surge tank (glued as well) in my beetle. It's been working fine for well over 10,000 miles. Our fuel here has 10% ethanol in it, and
i've run some VERY nasty cleaners through teh fuel system without even a hint of a leak. I'd say it gets the thumbs up from me 
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Pickpocket
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| posted on December 14th, 2010 at 02:52 AM |
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| Quote: | Originally
posted by Inane Cathode
I have a pvc surge tank (glued as well) in my beetle. It's been working fine for well over 10,000 miles. Our fuel here has 10% ethanol in it, and
i've run some VERY nasty cleaners through teh fuel system without even a hint of a leak. I'd say it gets the thumbs up from me
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I believe yours was the one I saw with the PVC surge tank. But it wasn't on this site.
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pete wood
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| posted on December 14th, 2010 at 01:40 PM |
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| Quote: | Originally
posted by Inane Cathode
I have a pvc surge tank (glued as well) in my beetle. It's been working fine for well over 10,000 miles. Our fuel here has 10% ethanol in it, and
i've run some VERY nasty cleaners through teh fuel system without even a hint of a leak. I'd say it gets the thumbs up from me
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pics pls
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Pickpocket
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| posted on December 15th, 2010 at 02:18 AM |
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PVC surge tank
Here's a link. I'm going for it.
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GeorgeL
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| posted on December 22nd, 2010 at 01:33 PM |
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Here's a reference chart for various materials and chemicals:
http://www.jenseninert.com/chemical-resistance.htm
Fuel tanks are made of rigid HDPE, not PVC
According to the chart, both HDPE and PVC rate a "Good" resistance.
Looks like PVC should work OK.
I'd still probably get a jam jar and drop a piece of PVC into it for a long term test, just out of curiosity.
This of course, leads to the question of if PVC is a suitable material for cooling system plumbing and reservoirs...
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Pickpocket
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| posted on December 23rd, 2010 at 05:15 AM |
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And you know what George, I already had that question before I found the PVC surge tank. My plan is to lay out my cooling lines under the car in PVC
pipes and once I have it all mocked up where I want it, take that to a shop and get it welded up or whatever in steel. But then I wondered if PVC
would be a suitable material for the cooling system. PVC is used for hot water applications all the time, and we know it can handle a decent amount
of pressure. It doesn't snow where I live so I'm not worried about extreme temperature changes. I don't drive on dirt roads so rocks and debris
isn't a big concern either. Hmmm. I guess there is only one way to really figure this out....
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