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> 275cc Vs 240cc Injectors
islandrvr
post Apr 20 2009, 12:04 PM
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alright i hope to not waste ya'lls time by posting a silly question so here i go. I live on the island of grenada were all vehicles go to die. I had one fuel injector go out on my 96 RVR 16valve dohc and the only replacement i could find was 275cc injectors mine were 240cc. instead of just having one oddball injector i replaced them all with the 275's. is there any thing else i need to do like increase spark plug gap or find a high airflow filter. please let me know what yall think
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Benckj
post Apr 20 2009, 03:25 PM
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With my limited experience with using diff injectors the change you have done will result in overfuleing and running very rich reducing performance and economy. I think you should be able to tune the fuel mix out by increasing your timing and making sure you have optinium air flow + spark. If you have not done a tune up now is the time for plugs, cap, rotor & air filter (K&N). Your O2 sensor will also become essential for adjustment of your A/F ratio so if you have not tested best to make sure its operating correctly.

Hope that this helps.

Jim
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KiT TeUnG 2549
post Apr 20 2009, 08:21 PM
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If yu are using those injectors yu may want to use a plug , NGK a little hotter than the one yu are using , sumthin like for hmmm, a Galant GS/GSR etc (4G64 DOCH) like 94. Also using a differant fuel pressure regulator will help. It all depends on teh type of rail yu have, there were 3 types of fuel rails with the DOCH engines. using a different fuel pressure regulator would reduce standing fuel pressure by a few lbs so it would bring yu to where yu should be with teh benifit of a couple more HP.A less restrictive air box will help offset this also.
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