Jump to content
SAU Community

Stock Rb25 Injectors + E85 Caltex Fuel.


Recommended Posts

Recently changed over to e85 from caltex.

currently using high flowed rb25 injectors + aeromotive fuel pump.

car has killed 4 injectors so far. replaced them with stock high flowed ones each time.

Had enough so got tune switched back to 98 pump tune last week and car is perfectly fine again.

anyone had this drama before?

are they not e85 compliant?

Link to comment
Share on other sites

How much are they costing you? Have you not considered just getting some ID1000's? I realize that's not what you're asking, but if you want to run E85 and you're killing stock injectors doing it, why not just go tried and proven?

Link to comment
Share on other sites

yes i will change injector setup to id's i was just curious thats all.. its really odd that its killing them

hi flowed stock injectors cost about $10 each to do..

Link to comment
Share on other sites

would it make u feel better if i said it cost me $100 per injector to highflow.. and the person charging the $100 really only cost them $10... still doesn't explain why the e85 is killing them..

do newer injectors have different design to the 19yr old rb25 injectors?

Link to comment
Share on other sites

Aftermarket injectors are usually tested to run other fuels like race fuels and methanol..E85 is known to be somewhat corrosive like this as well.

I guess it's possible the stock ones haven't been tested for such things, times change as do fuels and fuel components to suit. I believe Injectors have changed quite a bit in the last 20years..update to something more modern and I doubt you will have any regrets..

Link to comment
Share on other sites

yep its on the books, i just thought id test out the stock injectors and see how far they would go.

wasnt sure if i had a ecu fault or wiring or anything else.. why i wanted to know if anyone else has gone thru similar story.

Link to comment
Share on other sites

I have been running stock hi-flowed injectors for around a year now on caltex E85 with no issues.. They are maxed so most likely be upgrading to some kind of 1000cc option soon. Who's doing the best price on the ID1000's these days?

When you say it kills them what exactly happens? does the car just run rough/miss?

Link to comment
Share on other sites

u can get id1000 kits from states for around $950 rail n adapters etc.

yeh it killed 3 in cyclinder 2 then 1 in cyclinder 5 last week.

basically it runs fine... slowly gets worst.. slight miss on de cel and light accel.

then it will completey drop that cyclinder all together at any given time and wont come back and the injector will be dead. replace it with another hi flowed one and away i go again.

switched back to 98 tune 3 days ago done 75kms so far and drives perfect.

Link to comment
Share on other sites

u can get id1000 kits from states for around $950 rail n adapters etc.

yeh it killed 3 in cyclinder 2 then 1 in cyclinder 5 last week.

basically it runs fine... slowly gets worst.. slight miss on de cel and light accel.

then it will completey drop that cyclinder all together at any given time and wont come back and the injector will be dead. replace it with another hi flowed one and away i go again.

switched back to 98 tune 3 days ago done 75kms so far and drives perfect.

So on average how quickly is it killing them?? i find it hard to believe that they are failing due to corrosion inside of a week or two...

Link to comment
Share on other sites

car had been tuned on eflex for roughly 2 months. within the last 2-3 weeks is when the first one played up. then it killed 3 within space of 1-2weeks. and i went to powerplay last weekend, and 1 injector i replaced on the friday, lasted me all weekend ( 900kms driving + 27psi ) then got home and it died the next day. then went to my tuner n got tune switched over 3 days ago.

Link to comment
Share on other sites

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
 Share



  • Similar Content

  • Latest Posts

    • Well, try the new studs first, in case the US sourced studs are actually the problem. But given that the head is off the engine, at least it won't be too hard for someone to install helicoils if it turns out the holes are stuffed. You don't want to just run a tap or chaser through there if by doing so you leave behind 3/10ths of f**k all thread and the studs just pull straight out when you torque up the manifold nuts.
    • Hey everyone, I’m having a bit of a crisis and would like some advice.  I am in the process of assembling a head I had gotten back after NAPREC did their work. I had the exhaust studs removed prior to sending it to the machine shop, but afterwards when I tried threading in new studs, they wouldn’t go in straight. They would thread in smoothly by hand with almost no effort, but it doesn’t go in straight (noticeably circular motion) and eventually stops about halfway in. I had a couple go in perfectly straight with no effort, but when I removed them to try it again, they no longer when in straight and had the same issue as the others. The studs I’m using are M8x1.25, which I read was the standard. I did some research and decided to buy a chaser kit and new studs IEE NZ just in case. Has anyone experienced this? How screwed am I? Do I just need to run a chaser or tap and try again? Prefer a chaser because I heard taps can destroy existing threads.    Note: I also have a new set of intake studs that went straight in just fine that I bought from IEE NZ. I bought the exhaust studs from the U.S.
    • Photos. What you describe sounds impossible, given how the arms are assembled to the upright.
    • Hello everyone.  Since the last stint of turbo upgrades, the intake plumbing from air filter to turbo was made up of sections of ally pipe and silicone bends. This was done as the stock suction pipe was so restrictive, it was noticable on the dyno. The configuration and layout of the m35 engine bay meant that the intake plumbing was too close to the exhaust manifold, even in contact with the heat sheild in one spot. Apart from that i had to use the first section of the stock suction pipe bolted onto the turbo. Although the setup was much better than the stock suction pipe, it still caused some restriction and excesive heat into the incoming air. Its like trying to suck a thickshake through a thin soft drink straw, possible, but you gotta work really hard. Then add the heat...for those that may not know, the hotter the air, the further the oxygen molecules are apart and the less explosive a given area of air is when mixed with fuel, hence, why intercoolers work (compressing air makes the molecules move faster which also generates heat). Water injection and nitrous oxide injection also use the same principle.  As the M35 Stagea intake and suction pipe options on the market are very very limited, i decided to fabricate my own from the turbo to the filter and include one silicone joiner to allow for engine twist.  If anyone is interested while I'm in the process, I could manufacture a couple more but you gotta let me know soon. I'll post some pictures soon.
    • Hi everyone, I was wondering if anyone else has run into a similar issue. I recently installed ikeya Formula -15mm upper camber arms and lowered the car a bit. Right after the upright knuckle arm started to hit the upper camber arm making the car bottom out in while driving over small bumps in corners or dips on the highway. (Not even pushing the car) I was running HKS hipermax IVgt coils with 8K springs up front. Thought if i changed out the springs for 10K it would solve the problem, it did not.. Arms are still hitting. I asked a guy on instagram who is running the same upper arms, 8K springs up front and even a bit lower than my car sits. Guy has no problem of the arms hitting. Anyone else that has run into this issue or might have an idea of what could be the issue? I been told they might be installed backwards but the arms are as good as symmetrical and they fitted perfectly the way they are installed now.   
×
×
  • Create New...