66 Chevelle Retirement Project - Page 20 - Chevelle Tech
Pro Touring Todays performance with classic style

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post #286 of 298 (permalink) Old Feb 8th, 19, 4:08 PM Thread Starter
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Re: 66 Chevelle Retirement Project

So now that you have some history, here is where I am today. First, I got a proper plug for the front vent hole. Iím not convinced the brass plug was the correct thread, and could have been my entire problem.

I purchased the BMW Tank Vent System Charcoal Filter from Turner Motorsports. Cost me $280. I went with this because I saw Detroit Speed was using it. I am running a line from the filler vent hole to the 3/8Ē hole of the BMW filter. Then a ľĒ line from the BMW filter to the II Much vent.
I guess I should have mentioned that I used PTFE line from Brown & Miller, they are right down the road in Charlotte and a great bunch to work with. I basically took all my parts down, set them on the counter and said help. They were all over it, less then 30 minutes later I was walking out with the lines cut and AN fittings on them.

I am going to mount the BMW under the body up by the rear seat on the same level as the II Much vent. This is about as high as I can get it.
None of my solutions are cheap, I know that. I have heard guys say they go to the junk yard and grab a charcoal filter, but I have no idea what vehicles or where to find one, so I went this route. I also understand that I am probably applying a lot of over kill. But I have a II Much vent already, so figured I would hook it up. I could probably get by with a roll over vent after the BMW filter.

Hope to have this done over the weekend. Not sure if Iíll be able to get any good pictures but Iíll try.
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1966 Chevrolet Malibu
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post #287 of 298 (permalink) Old Feb 9th, 19, 2:16 PM
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Re: 66 Chevelle Retirement Project

Well, that sucks that the II Much vent with Vaporworx tank didn't do good for you.......I have the same parts for my build, not installed yet. We'll see how it goes for me....

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post #288 of 298 (permalink) Old Feb 10th, 19, 10:34 AM Thread Starter
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Re: 66 Chevelle Retirement Project

Todd,

You may be good. The II Much flaw has been fixed as I understand. Do you have the Rick Tank filler tube vent line access? Just those two items alone may be all you need.

Like I said, I know I am overkill with the charcoal filter, but not willing to take the chance. I'm working on the system today and hope to drive it, so I'll update this post with what I have so far later.

Rodger

NCOA# 17189
ACES # 536

1966 Chevrolet Malibu
Aberdeen NC


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post #289 of 298 (permalink) Old Feb 11th, 19, 11:40 AM
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Re: 66 Chevelle Retirement Project

Not trying to be critical of your design but I would of thought the charcoal filter would be placed in line after the vent/rollover check valve. That way it would only see the fuel vapors and no liquid.

Or am I missing something?

I'm going to be installing my tank in a few weeks and have been thinking about this step for awhile.

Jeff Evans
65 Chevelle, LS3/T56 transplant in progress
67 Chevelle, ZZ502, AFR 305, Straub Solid Roller, 400 Turbo, Moser Rear 3.42 gear
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post #290 of 298 (permalink) Old Feb 12th, 19, 10:12 AM Thread Starter
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Re: 66 Chevelle Retirement Project

Jeff,

Valid point, and you could do it that way. Just not sure how you would run from the II Much Vent to the Charcoal filter.

My thinking is that I originally had it set up to go straight to the II Much vent. The II Much vent has the brass vent on the bottom that they say no fuel smell should come out, but? it did. I went the route I did because Detroit Speed only uses the charcoal filter. And the Charcoal filter has a line out which the II Much does not. My other option would have been to have a T fitting after the charcoal filter to allow fuel back into the tank if it came up that high.

I have everything hooked up now, but while it is winter and I have the back end on jack stands I wanted to adjust my rear ride height with my coil overs. Unfortunately, my honey do list keeps getting in the way of me completing this last task. I am going to a Cruise in this weekend in Charlotte, so I need to get everything wrapped up by then so I can drive it and see where I am at.

Rodger

NCOA# 17189
ACES # 536

1966 Chevrolet Malibu
Aberdeen NC


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post #291 of 298 (permalink) Old Feb 13th, 19, 2:32 PM
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Re: 66 Chevelle Retirement Project

I did a little more research yesterday, from what I could learn it seems as though you'll have to have a vacuum line hooked up to the charcoal canister to pull the fumes it collects into the engine to be burnt. The charcoal has a limited capacity to absorb or hold the fumes and will become saturated overtime, thus you'll be in the same situation, gas fumes from the canister vent. Most hookup a ported vacuum source to the canister to accomplish this. Doesn't sound much different than the systems used in the early 70's. I would think that you could even restrict the ported vacuum source some to prevent an open vacuum leak that could affect engine tune. The ECM may make up for the additional air easily though.

Jeff Evans
65 Chevelle, LS3/T56 transplant in progress
67 Chevelle, ZZ502, AFR 305, Straub Solid Roller, 400 Turbo, Moser Rear 3.42 gear
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post #292 of 298 (permalink) Old Feb 13th, 19, 2:39 PM
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Re: 66 Chevelle Retirement Project

By looking at the II Much Vent I would assume there is an air path through it to the little bronze filter on the bottom. I don't think the bronze filter with remove gas fumes, its just a filter.

Please report back how your new system works with the charcoal canister.

Jeff Evans
65 Chevelle, LS3/T56 transplant in progress
67 Chevelle, ZZ502, AFR 305, Straub Solid Roller, 400 Turbo, Moser Rear 3.42 gear
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post #293 of 298 (permalink) Old Feb 13th, 19, 2:57 PM
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Re: 66 Chevelle Retirement Project

Found this, explains a little about how the system works on Corvettes.

1970 to 1982 Corvette Evaporative Emission Control System

Jeff Evans
65 Chevelle, LS3/T56 transplant in progress
67 Chevelle, ZZ502, AFR 305, Straub Solid Roller, 400 Turbo, Moser Rear 3.42 gear
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post #294 of 298 (permalink) Old Feb 13th, 19, 7:07 PM Thread Starter
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Re: 66 Chevelle Retirement Project

Jeff,

Great information, thank you. I took her out today and put 3/4 tank of gas in. So far so good. I'll get a better feel Friday.

If the BMW filter lasts a few years I am good to replace it. Otherwise, I'll be addressing this again soon.


I am driving the Hot Rod Power Tour this summer, that'll be the big test.

Rodger

NCOA# 17189
ACES # 536

1966 Chevrolet Malibu
Aberdeen NC


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post #295 of 298 (permalink) Old Feb 14th, 19, 2:10 PM
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Re: 66 Chevelle Retirement Project

Glad to hear that the charcoal canister is an improvement!

You have a beautiful car, glad to know that you drive it! I too plan to drive mine on long trips when complete.

Jeff Evans
65 Chevelle, LS3/T56 transplant in progress
67 Chevelle, ZZ502, AFR 305, Straub Solid Roller, 400 Turbo, Moser Rear 3.42 gear
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post #296 of 298 (permalink) Old Mar 3rd, 19, 8:34 AM
Greg
 
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Great looking car can’t wait to get mine done. I may have missed it but what a/c kit did you use?
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post #297 of 298 (permalink) Old Mar 4th, 19, 12:19 PM
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Re: 66 Chevelle Retirement Project

Quote:
Originally Posted by rpm66 View Post
Todd,

You may be good. The II Much flaw has been fixed as I understand. Do you have the Rick Tank filler tube vent line access? Just those two items alone may be all you need.
I looked at my filler neck yesterday, and there is a welded bung near the gas cap.

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post #298 of 298 (permalink) Old Jun 10th, 19, 9:25 PM Thread Starter
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Re: 66 Chevelle Retirement Project

I went with Vintage Air.

Rodger

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1966 Chevrolet Malibu
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