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L-Jet injectors

 
Old 01-06-2019, 08:15 PM
  #16  
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Greg Brown at Precision Motorwerks makes an adapter for modern Bosch injectors to be used with the L-jet fuel rail.
Good luck,
Dave
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Old 01-06-2019, 09:38 PM
  #17  
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Wow!! That’s awesome!! Thanks Dave. I was able to find the thread here: https://rennlist.com/forums/928-foru...-adaptors.html

So, next question, what bosch type II injectors have people been using? I assume they still need to be 24 lb injectors (just like the stock US ones) but they’re not all interchangeable and not all have the needed groove for the clip from what I’ve seen others post. Can anyone share some specific recommendations? And if anyone has done this conversion please share your experience!

Edit: Found some good feedback here: https://rennlist.com/forums/928-foru...6-valve-2.html

Will contact Roger!

Last edited by rjtw; 01-06-2019 at 09:57 PM.
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Old 01-07-2019, 10:55 AM
  #18  
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Be sure to use the correct size fuel hose for the short connector hoses. From a previous post:
"I used the "hats" and the Belmetric hose 13 x 7 mm. You can use hats and clamps on the fuel rail side, but not on the injector side. The hats leave too little room for the clamps to bite there and they slide up the hose. The hoses fit fine and were leak free on initial startup. The hats do seem to hold the ends of the hoses in shape and good contact with the fittings.
I was short two hats so I used clamps there. I used only hats elsewhere. These hoses felt like you could not remove them without destroying them, just like the N20281-1 hose."
The Belmetric hose is ethanol safe.
Good luck,
Dave
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Old 01-07-2019, 11:24 AM
  #19  
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Interested to find out what 4 hole injectors peeps are using on the L-Jet cars - 80 to 84 USA 4.5L & 4.7L
I have alternative injectors for all CIS cars. All 32v cars and S2 16v ROW 84 to 86.
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Old 01-07-2019, 11:58 AM
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I would call Greg Brown, who makes the injector adapters, to get his recommendations for injectors.
Good luck,
Dave
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Old 01-07-2019, 12:49 PM
  #21  
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Both Greg and I would both like to know? Without having them custom made for large $$
I sell GB's adapters but never been able to find a good replacement injector for the L-Jet cars..
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Old 01-07-2019, 03:31 PM
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I'm so confused. In this thread (https://rennlist.com/forums/928-foru...-adaptors.html) Greg says that he sells the injectors for the 80-84 cars and even has pictures. Will call.
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Old 01-07-2019, 03:47 PM
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Initially it was thought that they would be ideal for the 80 to 86 16v cars. The adapters will work on the 80 to 84 L-Jet cars but the ISSUE is the injector. If you can find a reasonably priced alternative injector I am all ears.
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Old 01-07-2019, 04:31 PM
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Wait. The injector and adapter shown in the pictures on Greg's website is not available? Why would he make the adapter fit some strange injector? Maybe he can update it to fit something that we can get.
Thanks,
Dave
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Old 01-07-2019, 04:51 PM
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Dave - The adapter and injector on GB's web site is for the 84 to 86 S2 16v ROW cars not the 80 to 84 USA L-Jet cars - I know it says they fit 80 - 84 L-Jet cars which is technically correct as the adapters do fit the L-Jet cars. The issue, as I keep saying, is finding an alternative injector that meets the different specs of the L-Jet. If someone knows/has experience of an alternative for a reasonable price then I am all ears.
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Old 01-07-2019, 04:53 PM
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Originally Posted by [email protected] View Post
Wait. The injector and adapter shown in the pictures on Greg's website is not available? Why would he make the adapter fit some strange injector? Maybe he can update it to fit something that we can get.
Thanks,
Dave
See my posts in this thread:
https://rennlist.com/forums/928-foru...dance-car.html
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Old 01-07-2019, 04:58 PM
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From Greg -----
I have no idea if high impedance injectors will work with an injecton system designed for low impedance injectors and told SoCal Tom exactly this.
I've been exclusively selling my adaptors to people with Euro engines that can obtain the correct impedance injectors.
I've told everyone with a US vehicle that I had no idea if high impedance injectors would work and have suggested that they either clean their injectors or fund good used original injectors.
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Old 01-07-2019, 06:44 PM
  #28  
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Thanks for looking into this and sharing that update, Roger!! As for myself, while it would have been nice to do an upgrade to more modern injectors, the only thing I really would like to do is replace the short lines connecting my injectors to the rails, just for safety and as a precaution. I would have done the injector upgrade if there was a tested and proven one. The car is running great so will continue to run the injectors I have. I will, however, be ordering the kit from Roger to replace the injector hoses (and will also change out all my other original flex fuel lines under the hood). And BTW Roger has been spending TONS of time answering all my questions about this stuff. Roger, you're such an asset for our community, THANK YOU!!
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Old 01-08-2019, 03:26 AM
  #29  
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I used high impedance injectors in a 944. They use similar electronics to a 928 and so far they have worked absolutely fine for the past 10K miles.

I'm sure it will be fine in a 928. I plan to do it with my 81 once the 5.0 is installed.
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Old 01-08-2019, 02:29 PM
  #30  
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I started this thread 6 yrs ago and still have original injectors.

Some new ideas:
Various sizes available (Inside thread type). Simply machine away inside threads to fit O ring on top of injector:
https://www.grainger.com/category/pu...ch-_-IDPPLACAT

Even easier, I read yrs ago on I believe an Alfa Romeo forum, if you cut away the plastic top of correct new style injector
barbs will be revealed. See photo barbs are already under the plastic top.

Now we need someone with more knowledge than I have to choose the correct injector to use.
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