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Temporary Injector line replacement

 
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WhorkMan  



Joined: 18 Feb 2012
Posts: 5
Location: Idaho Falls, Idaho

PostPosted: Wed Feb 29, 2012 5:56 am    Post subject: Temporary Injector line replacement Reply with quote

On the 77 924 that I recently picked up, the injector lines were in questionable condition and one was rigged fairly badly (a previous owner broke the banjo fitting on the injector side and reconnected them using some clear plastic tubing over both the injector and fuel line). I decided to try to do a temporary replacement until I can either find or make some proper replacements.

As anyone on this board who has tried this knows... it is impossible to find m8x1 threaded hose barbs....BUT... you can easily find m8x1 grease fittings at more hardware stores (I paid $5.99 for a 10 pack at O'reilly's Auto). I removed the spring and ball bearing from 8 of the 10 fittings and plan to use rubber hose with clamps. I also plan to take the original inner plastic hose from the original lines and push it up inside the new rubber lines... to help with pulsing and pressure issues. I still need to go buy the rubber hoses, but here are the grease fittings with the valves removed. The stem on the grease fittings is a bit short, but with a proper clamp it should hold better than my previous lines did


Grease fittings with the removed valve springs and ball bearings



Grease fitting showing that the valve was removed



Grease fitting without the valve removed



Side view showing the short stem on the grease fitting


I will get more pictures as I continue and let you all know if it works or not. Any questions or comments are welcome

Also, at-least on my 77, the injectors themselves and the four injector outlets on the fuel distributor are m8x1.00[/b]
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Rasta Monsta  



Joined: 12 Jul 2006
Posts: 11733
Location: PacNW

PostPosted: Wed Feb 29, 2012 7:32 am    Post subject: Reply with quote

Keep a fire bottle handy!
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Toofah King Bad
  • WeiBe (1987 924S 2.5t) - 931 S3
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WhorkMan  



Joined: 18 Feb 2012
Posts: 5
Location: Idaho Falls, Idaho

PostPosted: Wed Feb 29, 2012 7:38 am    Post subject: Reply with quote

ha! i would be more likely to need it if i tried running what was already there. here is a test fit for injector #2's line. I still need to get the old plastic line fed through the rubber hose and put the clamps on. the hose makes a surprisingly tight connection to the fittings even without the clamps. I am going to run to the parts house on my next work break and try to get the clamps i need

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fiat22turbo  



Joined: 18 Jan 2006
Posts: 4040
Location: Portland, OR

PostPosted: Wed Feb 29, 2012 7:53 am    Post subject: Reply with quote

Great potential solution.

Reinforced EFI-rated hose with the plastic hose inside should be just as durable as the stock lines.

I would look at just using braided steel line instead, some of the local parts stores has Earl's line available. That's just me as that is a lot of rubber that could get get rubbed through if you're not careful of the routing.

Just make sure to use EFI clamps to not cut through the ends of the hose like a worm-gear style would.
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1979 924 Carrera GTS (clone-ish)
1988 944 Turbo S (Silver Rose)
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