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Easy way to make Lemans fuel cap functional

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Old Feb 28, 2019 | 08:26 AM
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Default Easy way to make Lemans fuel cap functional

Bought the interior threaded tube and filler cap from Hagan’s street rods. Adapted it to stock filler neck. Looks like it will work perfectly. Same style of filler used on all the new cars.



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Old Feb 28, 2019 | 10:50 AM
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Nice, but one question. I live where they have annual smog inspections. One of the very stupid California induced checks is the gas cap and filling tube

It has to include the smaller diameter unleaded nozzle restrictor. Would that pass
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Old Feb 28, 2019 | 01:50 PM
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seems to me that question is for the California emissions people
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Old Feb 28, 2019 | 02:14 PM
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Yeah. Since all the gas I see in Ca. comes from needle- dicked, rubber foreskin covered unleaded fuel hoses--why the concern about a dumb restrictor
in the tank?
My Ford 1 ton has a diesel neck big enough to use the high volume semi truck nozzles. Wonder how they let that by?
I'm sick of Ca. and I'm a native son.
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Old Feb 28, 2019 | 02:17 PM
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That pretty slick. Is it just the cap or the filler neck that you added.

George, a lot of the newer cars and trucks have these so I imagine it will pass. As always with smog *****, ymmv.

Last edited by CA-Legal-Vette; Feb 28, 2019 at 02:18 PM.
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Old Feb 28, 2019 | 02:41 PM
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Adapted to stock filler neck. These are the two parts I ordered.

http://www.haganauto.com/product_p/fdcap.htm

http://www.haganauto.com/product_p/fdfs.htm
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Old Feb 28, 2019 | 02:43 PM
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Originally Posted by MelWff
seems to me that question is for the California emissions people
Well when they started the certified inspection stations 30 plus years ago. I put in my leanest tune jets, brought my initial timing down, changed the oil and air filter.... I arrived at the station and they put the sniffer in. They do and idle and just under 2500 rpm sniff. In the mean time they lift the hood and look the car over. I passed the sniffer tests with flying colors, but they failed me for all kinds of things on the visual inspection. No air pump, no air tubes on my illegal super comp headers, not a CARB certified intake manifold, No EGR, No charcoal gas tank vapor vent, modified dual exhaust without cats, and my quick fill can open gas tank filler didn't have the unleaded restricted gas filler.

That is the mind set of our elected officials. Where a prudent person would say, "Lets just have a pass or fail on the sniffer"

I was thinking that my poor vette was screwed. But then the light came on. I titled and registered my vette in my infant daughters name in a smog exempt area of the US. Police always ask if it is my wifes car and I have to be honest and tell them that my daughter likes fast cars and she just loaned it to me.
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Old Feb 28, 2019 | 04:10 PM
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California comments interesting! I assume some of you have modern year era registration on some of these pro touring cars, and you are not driving one smog exempt!

At the gas nozzles, I have either compressed the hose rubber by arm strength to get the hose to flow, or just use the lip of the filler hole to push hose nozzle compression!

So the smog checked vehicles, are now required to have a modern nozzle style filler! Wow! Interesting! I guess if it does come to that, I will be up at a junk yard with cutters to remove the filler from a modern car! Ouch!
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Old Feb 28, 2019 | 04:38 PM
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I like it! Is the gas tank vented somewhere? That late model cap probably isn't.

Tom

Never mind. I just looked at the link and it is vented!

Last edited by Sky65; Feb 28, 2019 at 04:43 PM.
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Old Feb 28, 2019 | 05:50 PM
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Tom, I am running an aftermarket tank with stock 69 tank dimensions and it is vented.

Last edited by 69ttop502; Feb 28, 2019 at 05:52 PM.
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Old Feb 28, 2019 | 06:05 PM
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I used the same design filler cap- got mine from "tanks inc"

I used a Dodge Challenger Lid instead of the Lemans


http://www.tanksinc.com/index.cfm/pa...rod/prd471.htm

Works great- as I was able to move the neck up higher and keep any water build up making it in the tank if the drain got clogged.









I redid the fill neck too-



Had it welded to the stock filler neck after I cut it down- then I powdercoated it matte black-





Has a drain- but added a hole up higher as an overflow just in case-







.


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Old Feb 28, 2019 | 06:16 PM
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Nice Richard, thought I had seen your whole thread but missed that part lol! Starting to figure out I should have talked to you a long time ago!
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Old Feb 28, 2019 | 08:22 PM
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I have a Lemans filler but on my 68 the fill tube is big enough to put my hand and arm into almost to the elbow. I was going to take and old fill cap and weld a neck to it, the run some Marine fill tube up to the Lemans cap. My cap needs to be vented so I dont have any emissions problems. Has anyone else come up with a different solution. I got excited when I saw that black neck in the first pic but noticed its a fuel cell, not a tank
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Old Feb 28, 2019 | 09:03 PM
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It’s not a fuel cell. It’s a Ricks tank but stock filler neck modified for the fill tube to fit it.
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Old Feb 28, 2019 | 10:24 PM
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Originally Posted by 69ttop502
Nice Richard, thought I had seen your whole thread but missed that part lol! Starting to figure out I should have talked to you a long time ago!

I'll just say that great minds think alike!!!


Originally Posted by Rescue Rogers
I have a Lemans filler but on my 68 the fill tube is big enough to put my hand and arm into almost to the elbow. I was going to take and old fill cap and weld a neck to it, the run some Marine fill tube up to the Lemans cap. My cap needs to be vented so I dont have any emissions problems. Has anyone else come up with a different solution. I got excited when I saw that black neck in the first pic but noticed its a fuel cell, not a tank
The filler neck is the same 63-74.
The piece I have - replaces the rubber filler neck seal AND after you cut the neck-it fits almost perfectly. Weld it up and add the push thru filler cap.

The tank needs venting not for emissions but to replace air in the tank-you cannot take fuel from yourtank unless you let air in.


I'm running fuel injection - so I wanted to make sure I got enough air...



roll over valve






Vent for boat hulls-





Vent in the antenna hole-



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Old Mar 1, 2019 | 06:50 AM
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Thnaks guys, lots of good info. After I get my suspension and rear end installed , my tank overhaul is next on the list
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Old Mar 1, 2019 | 07:35 AM
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Originally Posted by Richard454
I used the same design filler cap- got mine from "tanks inc"

I used a Dodge Challenger Lid instead of the Lemans


http://www.tanksinc.com/index.cfm/pa...rod/prd471.htm

Works great- as I was able to move the neck up higher and keep any water build up making it in the tank if the drain got clogged.









I redid the fill neck too-



Had it welded to the stock filler neck after I cut it down- then I powdercoated it matte black-





Has a drain- but added a hole up higher as an overflow just in case-







.


Dude...does that Charger cap fit right in the recess?
BTW.......where are you at on your project? I have seen you on and off here for quite sometime.......lots of crazy good detail work.

Jebby
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Old Mar 2, 2019 | 10:12 AM
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Originally Posted by Jebbysan
Dude...does that Charger cap fit right in the recess?
BTW.......where are you at on your project? I have seen you on and off here for quite sometime.......lots of crazy good detail work.

Jebby
Thank you sir!!!

Yep- off a 2018 Challenger take off- got it on eBay for about $60. I did have to file off the mounting tabs and the drilled the new mounting cup to secure it. Fits really nice.


HA- a while on this project....

This sort of sums it up -
"Focus on the journey, not the destination. Joy is found not in finishing an activity but in doing it."

Here's my build-I'm getting close-redoing -neatening up all the electrical right now. Drive-train is finished.

https://www.corvetteforum.com/forums...tte-v12-2.html
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Old Mar 2, 2019 | 10:31 AM
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Originally Posted by Richard454
Thank you sir!!!

Yep- off a 2018 Challenger take off- got it on eBay for about $60. I did have to file off the mounting tabs and the drilled the new mounting cup to secure it. Fits really nice.


HA- a while on this project....

This sort of sums it up -
"Focus on the journey, not the destination. Joy is found not in finishing an activity but in doing it."

Here's my build-I'm getting close-redoing -neatening up all the electrical right now. Drive-train is finished.

https://www.corvetteforum.com/forums...tte-v12-2.html
Cool.....I will be eating popcorn!

Jebby
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Old Mar 2, 2019 | 10:57 AM
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Jebby, if you haven’t checked Richard’s build thread out yet, you are in for a real impressive display of skills!

Last edited by 69ttop502; Mar 2, 2019 at 10:57 AM.
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