Correct tubing size for CIS injector lines?

[fanaudical]

I have searched the forum and elsewhere and have found conflicting info on this question:

What is the correct polyamide tubing size for CIS injector lines?

The forum seems to point to "thick wall" tubing and this seems to be the Cohline 6mm OD x 3.15mm ID tubing. I have found another reference that points to 6mm OD x 2mm ID tubing (and this doesn't seem to be available anymore). My original CIS lines are long-since gone.

Does anybody have any original lines that they have recently cut apart?

[Marwil]

Belmetric dot com.
https://www.belmetric.com/rubber-insulated-polyamide-c-14_184_1167/rhpoly2x10-rubber-insulated-polyamide-2x10mm-foot-p-17405.html

Their part number is: RHPOLY2X10

type this number into their seach box and it should get you there.

[fanaudical]

Got it - thanks!

A local Pelican sent me some photos of some original lines - they are marked at 6mm OD x 2mm ID. Bel Metric seems to be carrying this only in the rubber-insulated version; I have asked them if they have it available un-insulated (for those of us who like to apply our own stainless braiding). I'll let you know what I find out.

[Steam Driver]

I have complete sets (used) of both plastic and metal lines if you want to bypass the DIY approach.

[timmy2]

I’m the local guy, and I’ve offered him mine (used in good shape) to try to solve his fluctuation problems.

[fanaudical]

Thanks, Dennis! Yes, I'm going to try Dennis' lines first to verify it does make a noticeable difference.

My initial thought was to make a new set of SST-braided flexible lines (because they are so cool); hadn't considered the rigid metal lines. Will think about that...

[PeteKz]

I don’t recommend the rigid metal lines. They are always in the way when you are working around the engine. Yesterday, for example, i replaced my rear shocks with Koni Sports. The top of the right side shock is behind the engine, against the firewall (yes I know, that’s technicallly in front of the engine). I have the plastic lines, so i unscrewed the bracket that holds the three of them together on the right side. Then I flexed the lines out of the way to get to the nut on top of the shock. That’s a PITA to get at anyway, but if it had the metal lines, I would have had to remove them. Keep the plastic or switch to something else flexible.

[fanaudical]

That's a good consideration - thanks.

[7783911]

If you go SS braided lines I would be interested to hear your story and know what you ordered, i assume the difficult part are the connections to the injectors and the fuel distributor?