Jump to content
SAU Community

Recommended Posts

Hi All,

Injector issue so time to change out.

Was using S15 side feeds which served their purposes well, sprung a leak.

Would rather purchase new as I have had a decent run out of them.

Looking at going JECs 550s or higher.

I know this widely debated but I don't want to go to a top feed rail.

Regardless I know I am up for a re-tune so was hoping to hear any recent feedback regarding them before I take the plunge.

Old reviews have a mixed bag of feedback regarding them.

Link to comment
https://www.sau.com.au/forums/topic/466513-jecs-side-feed-inj-for-rb25det/
Share on other sites

I am in the same position as you being a 33 engine. 

You are still looking at around $900+ for some 'decent' side feeds like nismo. You are looking at the same cost going topfeed, and the injectors are new tech.

"JECS" 550+ etc as far as i am aware are still highflow injectors. They market them as standard jecs, because that's what they are, jecs injectors... that have been highflowd.

Completely understand how they market them as Jecs and then they are high flowed etc, also understand that they are "oldish" technology, the same "oldish" technology that 33 owners were using 4-5+ years ago.

Considering I was running S15 side feeds I am hoping for recent feedback of any members who have recently installed / used and had them tuned.

As I am running a Nistune board I already anticipate a new tune will be on the cards also.

 

I upgraded to 550 Deatschwerkls which i believe are actually highflowed stockers and they work ok but I think you may be able to get the better new tech injectors to fit in the sidefeed set-up (not 100% on this) but check with Scotty.

I tried JECS 550's - it was shithouse. Tuner was so angry and the car just idled like a bush pig. I chucked the whole lot out and went top feed setup.

Take my word for it and don't waste your money on a side feed setup!

1 hour ago, SkudR33 said:

I tried JECS 550's - it was shithouse. Tuner was so angry and the car just idled like a bush pig. I chucked the whole lot out and went top feed setup.

Take my word for it and don't waste your money on a side feed setup!

Were they second hand? Did they get cleaned/tested? Never seen trouble like that with jecs 550s, saying that if you're buying now go with top feeds for sure

Were they second hand? Did they get cleaned/tested? Never seen trouble like that with jecs 550s, saying that if you're buying now go with top feeds for sure



I bought them of a club member, they were practically brand new. He had the original receipts and paperwork. He had bought them from a supplier in Perth who claimed they were flow matched within 2%.

I got them cleaned and tested before I installed them. The spray pattern was awful and the injectors were not flow matched within 2% error like they promise. I seriously replaced them with a top feed setup a month after I had them installed!
37 minutes ago, ADM33T said:

It's def a mixed bag of responses of using re-manufactured side feeds that's for sure.

Its quite simple really - if they are in good cond they work. New tech ones work better. PM Scotty and see if he can supply new ones for your sidefeed rail.

http://scottyscustoms.com.au/

Don't do it.. you'll hate yourself. 

Nismo 740s or straight to top feeds. You can fit top feeds under the stock plenum without any issues if you're using 1/2 height injectors. 

http://www.trak-life.com/diy-converting-top-feed-injectors-r33-gts-t-skyline-rb25det/

10 hours ago, ADM33T said:

Thanks Dose, I've read a few of your reviews and feedback regarding them.

Il ponder a little more and go from there.

The top feed option just means more funds out the pocket emoji23.png

More funds in the short term, less funds in the long term, & less hating of yourself

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


  • Similar Content

  • Latest Posts

    • I had 3 counts over the last couple of weeks once where i got stranded at a jdm paint yard booking in some work. 2nd time was moving the car into the drive way for the inspection and the 3rd was during the inspection for the co2 leak test. Fix: 1st, car off for a hour and half disconnected battery 10mins 4th try car started 2nd, 5th try started 3rd, countless time starting disconnected battery dude was under the hood listening to the starting sequence fuel pump ect.   
    • This. As for your options - I suggest remote mounting the Nissan sensor further away on a length of steel tube. That tube to have a loop in it to handle vibration, etc etc. You will need to either put a tee and a bleed fitting near the sensor, or crack the fitting at the sensor to bleed it full of oil when you first set it up, otherwise you won't get the line filled. But this is a small problem. Just needs enough access to get it done.
    • The time is always correct. Only the date is wrong. It currently thinks it is January 19. Tomorrow it will say it is January 20. The date and time are ( should be ! ) retrieved from the GPS navigation system.
    • Buy yourself a set of easy outs. See if they will get a good bite in and unthread it.   Very very lucky the whole sender didn't let go while on the track and cost you a motor!
    • Well GTSBoy, prepare yourself further. I did a track day with 1/2 a day prep on Friday, inpromptu. The good news is that I got home, and didn't drive the car into a wall. Everything seemed mostly okay. The car was even a little faster than it was last time. I also got to get some good datalog data too. I also noticed a tiny bit of knock which was (luckily?) recorded. All I know is the knock sensors got recalibrated.... and are notorious for false knock. So I don't know if they are too sensitive, not sensitive enough... or some other third option. But I reduced timing anyway. It wasn't every pull through the session either. Think along the lines of -1 degree of timing for say, three instances while at the top of 4th in a 20 minute all-hot-lap session. Unfortunately at the end of session 2... I noticed a little oil. I borrowed some jack stands and a jack and took a look under there, but as is often the case, messing around with it kinda half cleaned it up, it was not conclusive where it was coming from. I decided to give it another go and see how it was. The amount of oil was maybe one/two small drops. I did another 20 minute session and car went well, and I was just starting to get into it and not be terrified of driving on track. I pulled over and checked in the pits and saw this: This is where I called it, packed up and went home as I live ~20 min from the track with a VERY VERY CLOSE EYE on Oil Pressure on the way home. The volume wasn't much but you never know. I checked it today when I had my own space/tools/time to find out what was going on, wanted to clean it up, run the car and see if any of the fittings from around the oil filter were causing it. I have like.. 5 fittings there, so I suspected one was (hopefully?) the culprit. It became immediately apparent as soon as I looked around more closely. 795d266d-a034-4b8c-89c9-d83860f5d00a.mp4       This is the R34 GTT oil sender connected via an adapter to an oil cooler block I have installed which runs AN lines to my cooler (and back). There's also an oil temp sensor on top.  Just after that video, I attempted to unthread the sensor to see if it's loose/worn and it disintegrated in my hand. So yes. I am glad I noticed that oil because it would appear that complete and utter catastrophic engine failure was about 1 second of engine runtime away. I did try to drill the fitting out, and only succeeded in drilling the middle hole much larger and now there's a... smooth hole in there with what looks like a damn sleeve still incredibly tight in there. Not really sure how to proceed from here. My options: 1) Find someone who can remove the stuck fitting, and use a steel adapter so it won't fatigue? (Female BSPT for the R34 sender to 1/8NPT male - HARD to find). IF it isn't possible to remove - Buy a new block ($320) and have someone tap a new 1/8NPT in the top of it ($????) and hope the steel adapter works better. 2) Buy a new block and give up on the OEM pressure sender for the dash entirely, and use the supplied 1/8 NPT for the oil temp sender. Having the oil pressure read 0 in the dash with the warning lamp will give me a lot of anxiety driving around. I do have the actual GM sensor/sender working, but it needs OBD2 as a gauge. If I'm datalogging I don't actually have a readout of what the gauge is currently displaying. 3) Other? Find a new location for the OEM sender? Though I don't know of anywhere that will work. I also don't know if a steel adapter is actually functionally smart here. It's clearly leveraged itself through vibration of the motor and snapped in half. This doesn't seem like a setup a smart person would replicate given the weight of the OEM sender. Still pretty happy being lucky for once and seeing this at the absolute last moment before bye bye motor in a big way, even if an adapter is apparently 6 weeks+ delivery and I have no way to free the current stuck/potentially destroyed threads in the current oil block.
×
×
  • Create New...