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Old 09-17-2006, 11:11 PM   #1
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Default 1.8 injectors...on a 1.6

everyone keeps saying 1.8 injectors, I've looked: but can I use the injectors from any 1.8 motor or does it have to be from a NA to be direct plug and play.. (like a set from the 2000 thats for sale on miata.net?)

the cars a 90.
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Old 09-17-2006, 11:19 PM   #2
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they are all the same clips I believe, not sure on the CCs.
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Old 09-18-2006, 12:41 AM   #3
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ok, just wanted to make sure.
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Old 09-18-2006, 09:10 AM   #4
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All years will work, but they look and flow different. The 94-97 1.8 injectors look like the 1.6 injectors with a different color plastic. The 99+ 1.8 injectors are red plastic and look considerably different. I saw an old post where someone had flow tested stock injectors from different years and the 99+ injectors (which are often noted to have more "headroom" for FI) actually flowed a little less than the 94-97 injectors, but the two setups also run different fuel rail pressures as the 99+ went to the returnless system and IIRC runs base fuel pressures in the 60s vs. the 40s for the early years.

I found the flow test thread here: http://forum.miata.net/vb/showthread.php?t=153952
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Old 09-19-2006, 09:54 PM   #5
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ah...thanks man. So you think it would be a good idea to grab the 2000 injectors?
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Old 09-19-2006, 10:36 PM   #6
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<Shameless plug>

I've got a set of 1.8 from a 97 forsale in the classifieds:

https://www.miataturbo.net/forums/showthread.php?t=4752

Also have Bipes, FM O2 clamp and MSD fuel pump forsale as well.

Jay


</Shameless Plug>
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Old 09-19-2006, 11:08 PM   #7
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lol, I just emailed the guy about his, if this falls through I'll go with yours
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Old 09-19-2006, 11:45 PM   #8
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Interested in a Bipes or Aux fuel pump?
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