Advice on Bending CIS Fuel Lines Would like to hear comments from other folks who have direct personal experience with bending the small individual steel portions at each end of the CIS fuel lines, which run from the fuel distributor to the end of each fuel injector. I need to slightly alter the routing of a couple of these fuel lines, and so far I have been unable to bend these lines successfully, unable to do so without creating kinks and flat spots in them. I am aware that such companies as Eastwood sell tubing bending mandrels, but a casual review of their offerings implies that these are intended for larger diameter lines, such as those used in the braking system, as one example, rather than being suitable for the teeny lil lines of the CIS system. Thanks - DM Image Unavailable, Please Login
Did you check NAPA, or Harbor Freight, or Sears Hardware, or AutoZone or one of those places for tube bending tools? I have to believe that there are some reasonably priced bending tools available for fuel lines.
Quick search found the following: http://www.harborfreight.com/tubing-bender-3755.html http://www.harborfreight.com/tube-bending-pliers-95782.html Hope that helps.
Had all mine off recently & replated & I had no problems "adjusting" them when I refitted them. Just go carefully, as far as I know they are not easily replaced.
I worked with the tubing benders listed above and they are designed for larger OD metal lines used for brakes. I decided to design and just have new lines fabricated as re-plating the oem pieces, new line and special tools to rebuild them and time was not for me. I kept my old lines for future owners if I ever decide to sell. I do not worry about my cis fuel lines anymore. Image Unavailable, Please Login Image Unavailable, Please Login
Whoa! Beauty! What a well done piece of work this is! Can you offer some how-I-did-this details for us all, especially the use of the ferrules on the line ends? Steve - thanks for the effort to post the links to the tubing benders earlier, but the dilemna is that the small OEM tubing has only a 5/32" (4 mm) O.D. And if you check the specs on those benders in your links, you will see that they all start with 3/16" (4.75 mm) as the smallest line that they can do. However, a new thought: Maybe a fellow could cut off the OEM tubing about an inch or so beyond the fittings at each end, and then slip a slightly larger tubing with a 4 mm I.D. over the old tubing, and then solder the connection to make it tight? This would offer the advantage (?) of a slightly larger tube I.D. for the fuel to pass thru, up to the points where it needed to go back thru the short end stubs of the OEM tubing, of course. This larger diameter tubing could then be easily custom bent using one of the various benders referenced above. Thanks - DM
Here are some of the work in progress pic's with additional information as requested. Hope this will help. Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
Robert, Those line are really nice. Where did you have them made up? I'm sure that shop would get a LOT of business from folks here, especially if they have the specs to make up the sets from what you put together. Steve
I would think any proper tool designed for bending steel brake lines would work fine --- same material and similar range of diameters.
+100000000000000 Robert, P L E A S E postmore on this subject. PRETTY P L E A S E ?????!!!!!!! Also, where did you get the hose "keepers." I tried for months to find OEM or OEM-like from another manufacurer using BOSCH CIS to no avail. Any additional posts would be VERY MUCH APPRECIATED.
ROBERT --- You make me feel "dirty"..................about the cleanliness of my engine, I mean That's one damn shiny 308 engine you have there --- very nice
I too was looking into a marketable set of these lines but too costly as this original thread stated the bending of these (4.75 mm) lines is not as easy as it appears to be and duplicating them 8 times well it was a lot of trial and error during fabrication. The #3 injector (on my 83 QV) is covered by the throttle body butterfly linkage which ended up in my case determining how the lines were going to look as I wanted them to all look similar. The two different cis end connections pictured below did not look good together in my opnion. Greg Brown Owner of J2 Precision Hose in California can make anything you may need. J2 PRECISION HOSE 930 E. ORANGETHORPE AVE. SUITE E. ANAHEIM, CALIF 92801 714 447-4700 FAX 714 526-6002 Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login Image Unavailable, Please Login
