Having problem double-flaring metric lines.
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Re: Having problem double-flaring metric lines.
first off its a bubble flare, a double flare is different, make sure you have the right one. Secondly, its a 6mm line, a hair smaller. thats why its slipping. What prop valve did you go with and how are you adapting to it? Im looking to do the same thing.
#3
Re: Having problem double-flaring metric lines.
Going with a wilwood. The wilwood is 1/8" and comes with 1/8" to 3/16" adapters. I went to NAPA and bought 1/8" to 1/4" adaptors and am going to use those adapters instead. Cutting the ends of the stock lines and flaring them for 1/4".
For the fronts, I'm using a 3/16" "T", that I also got from NAPA. Then cutting off the ends and flaring them to work with 3/16" fittings. I can get the SAE flare tool to work on these smaller metric lines (approx 3/16"). Just need a new mini-tube cutter to cut it perfectly.
I can't find a metric flare tool and I think thats what I need.
The stock master cylinder uses a bubble flare but I think downward from that its a double flare to get this other stuff in. I don't know, I'm going off of this: https://www.thirdgen.org/propvalve
For the fronts, I'm using a 3/16" "T", that I also got from NAPA. Then cutting off the ends and flaring them to work with 3/16" fittings. I can get the SAE flare tool to work on these smaller metric lines (approx 3/16"). Just need a new mini-tube cutter to cut it perfectly.
I can't find a metric flare tool and I think thats what I need.
The stock master cylinder uses a bubble flare but I think downward from that its a double flare to get this other stuff in. I don't know, I'm going off of this: https://www.thirdgen.org/propvalve
Last edited by Firebat; 07-14-2008 at 08:04 AM.
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Re: Having problem double-flaring metric lines.
after 82? its all bubble flare on the whole car. I guess it depends on what flare the adj prop valve requires, its probably double flare come to think of it. I lucked out and actually found a metric bubble flare T fitting for the front lines. No cutting required
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Re: Having problem double-flaring metric lines.
you'll have to summon all the strebgth you can muster and tighten the clamp till it feels like it's going to break. if you remove too much material from the line by slipping the tool down it repeatedly you can always go get an extra set of hard lines from the junk yard. cost me $8 for the full rear hard lines.... you should also practice on some lines from the j/y before you cut yours too much. some people suggest practicing on new line stock from Autozone but the new lines are soft and alot easier to flare than your 22 year old stock lines so your flaring technique will need to be changed.
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Re: Having problem double-flaring metric lines.
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Re: Having problem double-flaring metric lines.
I was at Autozone yesterday to rent their flaring tool and the guy asked if I wanted a metric or standard set. I guess they rent out both. Give them a shot. $25.
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Re: Having problem double-flaring metric lines.
Autozone has both the metric and SAE sizes. Sometimes you can get away with using the metric one, because its alittle smaller. What I usually have to do, after a certain amount of flaring, is run a tap down through the tool with it closed. That usually sharpens it up some to give it more grip.
Speaking of it being closed...I break all of mine. On purpose usually. Those little pins are cheap soft crap metal. I get some little bolts and nuts and put them in instead. They will bend/break eventually, but hold up to a lot more abuse.
I couldnt wait to replace all my lines with regular SAE line. I used double flares and regular old line everywhere I could.
J.
Speaking of it being closed...I break all of mine. On purpose usually. Those little pins are cheap soft crap metal. I get some little bolts and nuts and put them in instead. They will bend/break eventually, but hold up to a lot more abuse.
I couldnt wait to replace all my lines with regular SAE line. I used double flares and regular old line everywhere I could.
J.
#13
Re: Having problem double-flaring metric lines.
Autozone has both the metric and SAE sizes. Sometimes you can get away with using the metric one, because its alittle smaller. What I usually have to do, after a certain amount of flaring, is run a tap down through the tool with it closed. That usually sharpens it up some to give it more grip.
Speaking of it being closed...I break all of mine. On purpose usually. Those little pins are cheap soft crap metal. I get some little bolts and nuts and put them in instead. They will bend/break eventually, but hold up to a lot more abuse.
I couldnt wait to replace all my lines with regular SAE line. I used double flares and regular old line everywhere I could.
J.
Speaking of it being closed...I break all of mine. On purpose usually. Those little pins are cheap soft crap metal. I get some little bolts and nuts and put them in instead. They will bend/break eventually, but hold up to a lot more abuse.
I couldnt wait to replace all my lines with regular SAE line. I used double flares and regular old line everywhere I could.
J.
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Re: Having problem double-flaring metric lines.
Autozone should rent a metric flaring tool; I don't think I've ever seen the tool for sale there.
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Re: Having problem double-flaring metric lines.
I had the same problem trying to bubble flare a line. It kept pushing through i had tried 3 different flare sets. My car was off the road so i took the whole line to a shop and had them flare the line with a snap-on set. $20 tip for the mechanic which took him less then 3 minutes he was happy and so was i. Cheap tools don't work worth a damn sometimes.
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Re: Having problem double-flaring metric lines.
i've been using a standard set from napa. life time waranty and you just need to tighten it in a desk vice to clamp it enough to keep it tight. Althought it does slip from time to time, and i have broken one set in the past (it was the cheap $25 kit instead of the $50 kit that i have now). Otherwise try autozone. Ask them for the rental, and if they have it...see if they can order you one so that you can have your own kit. Usually the guys behind the counter will get you the stuff you want, and if the stores can get it, they should be able to find you one for yourself.
#17
Re: Having problem double-flaring metric lines.
Any alternatives to double-flaring the lines?
I've tried the metric flare tool set. I've also tried using a metric flare tool to start flaring then use a SAE tool to get to finish the flare. It didn't leak until I bolted up the brakes and tried to bleed them. Barely leaking though. Any alternatives? I don't care if its permanent either, like welded or something like that.
I've tried the metric flare tool set. I've also tried using a metric flare tool to start flaring then use a SAE tool to get to finish the flare. It didn't leak until I bolted up the brakes and tried to bleed them. Barely leaking though. Any alternatives? I don't care if its permanent either, like welded or something like that.
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Re: Having problem double-flaring metric lines.
try autozone. Ask them for the rental, and if they have it...see if they can order you one so that you can have your own kit. Usually the guys behind the counter will get you the stuff you want, and if the stores can get it, they should be able to find you one for yourself.
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Re: Having problem double-flaring metric lines.
Any alternatives to double-flaring the lines?
I've tried the metric flare tool set. I've also tried using a metric flare tool to start flaring then use a SAE tool to get to finish the flare. It didn't leak until I bolted up the brakes and tried to bleed them. Barely leaking though. Any alternatives? I don't care if its permanent either, like welded or something like that.
I've tried the metric flare tool set. I've also tried using a metric flare tool to start flaring then use a SAE tool to get to finish the flare. It didn't leak until I bolted up the brakes and tried to bleed them. Barely leaking though. Any alternatives? I don't care if its permanent either, like welded or something like that.
RBob.
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Re: Having problem double-flaring metric lines.
I guess I could just add it here since I didnt see the reply to my question yet.
When you cut the tubing, make sure its square to the line. File it if you have to.
When using the tool for the first part of the double flare, make sure it stays square to the line. Also keep in mind you dont have to smash it all the way down to the block holding the line in place.
When using the tool for the second part of the double flare absolutely do not overtighten it. This almost always results in a line split. Tighten it down until it folds the end down and has somewhat of the seat it needs. Let the connection on the car do the rest.
In any case, keep everything as square and centered as possible. Force the tool around if you have to, to get it that way. Most of them while doing the flaring will try to lean over to one side, dont let that happen. When its done, the flare should be fairly close to equal distance from the edge of the flare to the side of the tubing. With practice you can get that to happen every time.
When you cut the tubing, make sure its square to the line. File it if you have to.
When using the tool for the first part of the double flare, make sure it stays square to the line. Also keep in mind you dont have to smash it all the way down to the block holding the line in place.
When using the tool for the second part of the double flare absolutely do not overtighten it. This almost always results in a line split. Tighten it down until it folds the end down and has somewhat of the seat it needs. Let the connection on the car do the rest.
In any case, keep everything as square and centered as possible. Force the tool around if you have to, to get it that way. Most of them while doing the flaring will try to lean over to one side, dont let that happen. When its done, the flare should be fairly close to equal distance from the edge of the flare to the side of the tubing. With practice you can get that to happen every time.
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Re: Having problem double-flaring metric lines.
I had the same problem trying to bubble flare a line. It kept pushing through i had tried 3 different flare sets. My car was off the road so i took the whole line to a shop and had them flare the line with a snap-on set. $20 tip for the mechanic which took him less then 3 minutes he was happy and so was i. Cheap tools don't work worth a damn sometimes.
Cheap tools don't work, period. Spend the $$ on the right equipment and flare away. I wasted a day installing a line-lock on my rag, and the POS flare tool from vato-zone couldn't cut it. Borrowed a "real" flare tooling kit from a guy at work, instant success.
#23
Re: Having problem double-flaring metric lines.
Discovered a little trick to cut the line perfectly square. Flip over the tool that has the holes in it and put the line in so it comes out the side that doesn't have the countersunk holes. Then have the line stick out just far enough so that you can run a file over and the file is parallel to the surface of the tool. Just make the tool tight enough to hold the line in place. The file won't file away the tool but will file the line.
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