C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

84 fuel line replacement

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Old Aug 9, 2020 | 02:01 PM
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Default 84 fuel line replacement

84 fuel line replacement...oem lines are rusty inside and out...how big of a job is this ? any hints from those that have done this already ?
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Old Aug 9, 2020 | 06:06 PM
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You will have a hard time finding a stock OEM replacement for your car. However, I have some 84 FPAs with fuel pressure gauge to replace that if interested? PM me.

Last edited by Buccaneer; Aug 9, 2020 at 06:09 PM.
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Old Aug 10, 2020 | 03:39 AM
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You can get all the lines from Zip or Ecklers. I have only replaced the front half. ie the feed line from the filter forward, the line between The two throttle bodies and the return line back to the union adjacent to the filter. They weren’t that hard to replace but I had the AC compressor off at the time. If you don’t have a set of flare nut spanners get some otherwise you will struggle undoing the flare nuts.

I haven’t replaced the rear half of my lines yet because it took me over 30 emails and six months to convince Zip that the rear half of the return line was not in the box and to please send me one. Anyway that’s a story for another time but the car was back on the road by then, so I’m now storing the rear sections of my fuels lines for a rainy day.

Last edited by GregMartin; Aug 10, 2020 at 03:45 AM.
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Old Aug 10, 2020 | 02:29 PM
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Originally Posted by GregMartin
You can get all the lines from Zip or Ecklers. I have only replaced the front half. ie the feed line from the filter forward, the line between The two throttle bodies and the return line back to the union adjacent to the filter. They weren’t that hard to replace but I had the AC compressor off at the time. If you don’t have a set of flare nut spanners get some otherwise you will struggle undoing the flare nuts.

I haven’t replaced the rear half of my lines yet because it took me over 30 emails and six months to convince Zip that the rear half of the return line was not in the box and to please send me one. Anyway that’s a story for another time but the car was back on the road by then, so I’m now storing the rear sections of my fuels lines for a rainy day.
Greg are you saying that they make the stock line in-between the TBs? If so, do you have a link? I checked at Eckler's and didn't see any. ZIP may have one, but no pics to tell for sure. Thank you.

Last edited by Buccaneer; Aug 10, 2020 at 02:32 PM.
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Old Aug 10, 2020 | 03:02 PM
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Ordered the pre-bent feed line and return line from Ecklers $315 as shipped...see how much PITA this is going to be...any fore-warnings from anybody ?
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Old Aug 10, 2020 | 05:59 PM
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Originally Posted by Buccaneer
Greg are you saying that they make the stock line in-between the TBs? If so, do you have a link? I checked at Eckler's and didn't see any. ZIP may have one, but no pics to tell for sure. Thank you.
Hi Tom
i just looked it up and it seams to have disappeared off the Ecklers website however it’s still on Zip but I notice the the pictures have been removed (maybe that’s after the debacle I had with them). Anyway here is the link https://www.zip-corvette.com/84-thro...fuel-line.html
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Old Aug 11, 2020 | 04:32 AM
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Originally Posted by GregMartin
Hi Tom
i just looked it up and it seams to have disappeared off the Ecklers website however it’s still on Zip but I notice the the pictures have been removed (maybe that’s after the debacle I had with them). Anyway here is the link https://www.zip-corvette.com/84-thro...fuel-line.html
OK, yeah I saw that and wondered. Was the one from ZIP in fact the correct tubing? They show an 84, but no 82 listing, that's odd. Personally, I don't buy anything from ZIP...period!

Last edited by Buccaneer; Aug 11, 2020 at 04:32 AM.
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Old Aug 11, 2020 | 05:12 AM
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Originally Posted by Buccaneer
OK, yeah I saw that and wondered. Was the one from ZIP in fact the correct tubing? They show an 84, but no 82 listing, that's odd. Personally, I don't buy anything from ZIP...period!
Yeah I learnt my lesson too. When I originally looked them up Ecklers had them too so I don’t know what’s going on there. Sometimes I find stuff from Ecklers doesn’t appear when you list by year model. They are actually made by a company in the US called Classic Tube so maybe you can buy them directly from them.
Edit: Here is their website
https://classictube.com/
Also here is my packing slip from Zip maybe the part numbers will be the same





Last edited by GregMartin; Aug 11, 2020 at 05:24 AM.
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Old Sep 26, 2020 | 10:30 AM
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After 2 days of fighting with these lines I have a solution. You can not install complete 1 piece lines without dropping the 'Batwing' and the associated suspension and driveline hardware. My solution was to cut the lines where it makes the 'curve' over the passenger 'half-shaft'.. take out about 14 inches (about 7 inches from each side) then feed them in as 2 pieces...from the tank toward the half-shaft and just over the half-shaft toward the front. Will silver solder steel male -6an fittings on each and fab a -6an flex line to connect them together.
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Old Sep 26, 2020 | 06:20 PM
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Dropping the batwing is not that bad. Only two bolts. I have done that many times on the two post lift. Just support the center with a jack to take the weight while removing the batwing to frame bolts. The rest of the rear suspension and the c-beam does not have to be removed. You can even leave the exhaust in place if you unbolt the hangers rear of the mufflers. Depending on how much you need to drop the rear you might have to slack the e-brake cable.

I replaced the stock lines with 12 mm hydraulic lines that I made myself.





Last edited by JoBy; Sep 26, 2020 at 06:24 PM.
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