danglerb

The Porsche sickness is hitting me, and I am thinking I don't want silver clear zinc fuel injector hose clamps if I can safely avoid them. I've got some hoarded away used Norma clamps, but I'm thinking new might be better, either something in yellow zinc to match the rest of the engine clamps, or maybe the Gates shrink clamps.

Suggestions on sources or options?

Eplebnista

I wish I had something to offer here. I have been looking for a while.

davek9

Gates shrink clamps.... Interesting, doesn't say anything about Fuel system usage, only water.
But they would make for a clean look.

77tony

Installed the Gates clamps on Just Peachy. As noted above, not to be used for fuel lines and do offer a nice clean look. T

Rob Edwards

Not sure what the factory P/N is, but you can't count on NOS factory stuff still being yellow zinc unless it is truly old. Most nuts and bolts from Porsche are regular silver now.


Why not just pull the motor, disassemble the drivetrain, and have a big batch of stuff plated?

Ducman82

^^ thats what i did. :-P

danglerb

Did that, but you don't expect me to just use it up do you? That stuff is for hoarding not using.

Besides I would have to find it first, and not sure I collected up enough smaller clamps when I had them plated.

Some searching suggests MB parts, or apparently its fairly easy DIY to plate with yellow zinc, zinc dichromate.

PortlandTom

Have you looked here?

http://www.eagleday.com/normaclamps.html

danglerb

Yup, "TEMPORARILY UNAVAILABLE", don't appear to go to small enough sizes, or be full circle type for fuel injection.

I'm not going to put a lot of worry into it, long term I want oring/clip rails and injectors anyway.

Rob Edwards

Mike, hit the McFadden-Dale on La Palma- they have a selection of NORMA hose clamps in several sizes. Not yellow zinc, and no idea what size you need, but they're there.

danglerb

Thanks, may give them a shot or just around the corner from them ...

danglerb

Injector cleaner is giving special attention to my set, so taking some time, which I am putting to good use by continuing to look for yellow shiny clamps. I've found sources for both of the following, now I'm not certain on the size.

Gemi hose clamp 0019976990 13mm Clamp for 7.5mm ID Fuel Hose. MB OEM.

or maybe

Norma CHP13N

Caution needed with the clamps, some brands give a nominal size, some min, some max, and I am not certain either of these fit.

Gates 27335 5/16 ID hose is "I think" either 7/16 or 9/16, but I don't recall which or if that would include as fitted over the injector barb.

danglerb

I won't feel 100% sure on fit until I have them on the hoses, but decided to go ahead and order two cars worth, 35 clamps, from https://www.belmetric.com/chp13n-nor...l?cPath=15_143 $35 shipped.

13mm Norma Slotted drive high pressure round head drive hose clamp Yellow Zinc Plated. Clamping range in mm, 10.0 to 13.3. These clamps are a sure seal for small, thin-walled hoses. The nut is secured to the clamp, making installation easier. 9mm wide band. Yellow Zinc plated. Original Norma made in Germany.

danglerb

Clamps from Belmetric arrived today, Norma 13 with yellow Zinc plate. So far so good.

Test fit on bare Gates 27335 hose and its a tight, but I think OK fit as long as the barb doesn't expand the hose too much. I did need to squeeze the clamp open with pliers, but I don't think I pushed the limit it will open, and some of the tight fit was due to the inside "tongue" being curved down slightly, which a little force will overcome.

Plating looks good, not perfect, not all of the threaded portion of the screw plated, but I think its the best that can be hoped for without disassembling the clamp entire prior to plating. I think they will look fine on the motor too.