PDA

View Full Version : all motor k24a2 650cc injector knock issue



talonpunk831
02-22-2012, 03:20 PM
Hey friends, I have a 03 ep with a k24a2, k pried, it was supercharged but not anymore. The only injectors I have are some rc 650s. I loaded up the k24 base tune(nodded with the right injector size). And I get knock issues from 2500-4000rpms on 91 octane. I've backed up the timing greatly, upped the fuel and ill get about 15-25 knocks on a 2nd gear pull half throttle and under. Once I give it more than half to wot the knocks tend to stop or are less than 1 or 2. After hours of messing with it I just dumped 3 gallons of 100 octane with 6 of 91 and it runs perfectly. Anybody help me put here? I was thinking about getting the 310cc injectors since 650 are really big for a stock motor.

AKEP
02-22-2012, 04:46 PM
add fuel on the bottom, if you have a boost gauge you can use that to see at what vacuum level you're knocking, and based on rpm you can add fuel and monitor the AFR on kpro. just keep doing what you're doing, just with less throttle, and it should level itself out. fuel first, then spark.

if you read the notes section it says to check AFR at partial throttle, so just keep doing it.

talonpunk831
02-22-2012, 06:35 PM
Yeah i did that to the point of being suuuuuuper rich......is my idea of smaller injectors well founded or should i just die...lol

AKEP
02-23-2012, 11:30 PM
you can get a set for cheap, under $100 probably. i still tihnk you'll run into those problems. you shouldn't be richer than 13.0//13.5 at partial throttle. pull some timing next.

USAF EP3
02-23-2012, 11:50 PM
If you want to get rid of those RC 650's shoot a PM over to me, I could really use a set.