Jump to content
SAU Community

Recommended Posts

  • 3 weeks later...

Hasn't moved much from E65 since they started supplying. With ethanol in short supply atm I don't see them increasing the percentage anytime soon.

Get a $200 wideband if you're worried.

Just wondering...does anyone know the accurate percentage of ethanol of the eflex fuel at springvale and mt waverley caltex servos at the moment? Still don't have my tester...

springvale was down in the low 60's for a while in the dead of winter, but i fill up from Glen Wav for the last few months and have been back to Chequered for some touch up stuff since, content sensor was saying E70.

Actually, i should really get this all going on my laptop. Parallel desktop then Link software, then i can tell you EXACTLY what Glen Waverley is at the moment (filled up a couple days ago)

But to be honest, the two outlets should be the same as it's the same truck and delivers it.

off to piratebay.org...

we weren't sure if it was the Ethanol shortage from the floods that caused the real low winter numbers or if they were being ultra conservative from a cold-start point of view and hence have a higher petrol content.

What will be interesting is if they go to full E85 in summer, shall be checking the laptop with interest :D

I should check if Fueltown has their E85 back up as well...

Fueltown is still out according to my mate, he cant tune his old xr6 flash box anymore so is back on 98 until fueltown have stock of e85. He was running Caltex for a few weeks but it just ran too rich.

You would barely notice the difference between e65 and e70 on the wideband, I just assumed they mixed it on site as the tank was filled hence the inaccuracy's.

  • 4 weeks later...

Sydney Tempe site is now E80. I asked the servo attendant and he said 80%, then went home and tested and yup.

Can't wait till the car has the engine in and tuned! Have 40L of the stuff waiting in jerry cans hehe.

Q: Being it's E80 but knowing that Caltex will revert to e70 later on, do i ask my tuner to tune it slightly leaner or richer to compensate for the future change back to e70 that caltex will implement.

Unfortunately i only have a pfc so no funky ethanol content sensor here.

  • 2 months later...

hey guys

just want to say great thread, has been a mission reading it, only up to page 54, thought i would share something ive just read from another thread

just finnished reading a thread on detonation and pre-ignition, i come accross these two paragraphs and i remembered a few of you guys were running lower EGT's

"The other technique is a little more subtle but usable if attention is paid to EGT (Exhaust Gas Temperature). Detonation will actually cause EGTs to drop. This behavior has fooled a lot of people because they will watch the EGT and think that it is in a low enough range to be safe, the only reason it is low is because the engine is detonating.

The only way you know what is actually happening is to be very familiar with your specific engine EGT readings as calibrations and probe locations vary. If, for example, you normally run 1500 degrees at a given MAP setting and you suddenly see 1125 after picking up a fresh load of fuel you should be alert to possible or incipient detonation. Any drop from normal EGT should be reason for concern. Using the "Tin Ear" during the early test stage and watching the EGT very carefully, other than just plain listening with your ear without any augmentation, is the only way to identify detonation. The good thing is, most engines will live with a fairly high level of detonation for some period of time. It is not an instantaneous type failure."

as far as ive figured out E85 burns at slower rate therefore timing can be advanced a great deal more then PULP

it also had a higher Octane rating makig it harder to ignite

becasue of its high alcohol content alot more fuel is needed to compared to PULP to get your bang for buck, this in turn would keep cylinder temps down and reduce EGT's

Are the E85 guys missing something here and having their engines detonate without them knowing or is the low EGT's just a safe bi-product of E85?

Q: Being it's E80 but knowing that Caltex will revert to e70 later on, do i ask my tuner to tune it slightly leaner or richer to compensate for the future change back to e70 that caltex will implement.

Unfortunately i only have a pfc so no funky ethanol content sensor here.

My GTR was tuned on united E85 (and according to my ethanol sensor that is E 90). I have ran anything from united to Caltex 'flex fuel' over the last 12 months and never had a issue. Take that how you will, but that is my experience.

hey guys

just want to say great thread, has been a mission reading it, only up to page 54, thought i would share something ive just read from another thread

just finnished reading a thread on detonation and pre-ignition, i come accross these two paragraphs and i remembered a few of you guys were running lower EGT's

"The other technique is a little more subtle but usable if attention is paid to EGT (Exhaust Gas Temperature). Detonation will actually cause EGTs to drop. This behavior has fooled a lot of people because they will watch the EGT and think that it is in a low enough range to be safe, the only reason it is low is because the engine is detonating.

The only way you know what is actually happening is to be very familiar with your specific engine EGT readings as calibrations and probe locations vary. If, for example, you normally run 1500 degrees at a given MAP setting and you suddenly see 1125 after picking up a fresh load of fuel you should be alert to possible or incipient detonation. Any drop from normal EGT should be reason for concern. Using the "Tin Ear" during the early test stage and watching the EGT very carefully, other than just plain listening with your ear without any augmentation, is the only way to identify detonation. The good thing is, most engines will live with a fairly high level of detonation for some period of time. It is not an instantaneous type failure."

as far as ive figured out E85 burns at slower rate therefore timing can be advanced a great deal more then PULP

it also had a higher Octane rating makig it harder to ignite

becasue of its high alcohol content alot more fuel is needed to compared to PULP to get your bang for buck, this in turn would keep cylinder temps down and reduce EGT's

Are the E85 guys missing something here and having their engines detonate without them knowing or is the low EGT's just a safe bi-product of E85?

I know from bikes that when you run an ethanol content your egt's are much lower that pulp, so its a safe bi-product of ethanol to have low egt, couldnt give you a figure for a car engine though. Its much safer on your valve seats and almost everything because (especially e85) is just so much cooler.. And in the case of a 2 stroke (getting off topic) its awesome if you tune it right, will make huge power difference and much harder to melt a piston

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

    • Who did you have do the installation? I actually know someone who is VERY familiar with the AVS gear. The main point of contact though would be your installer.   Where are you based in NZ?
    • Look, realistically, those are some fairly chunky connectors and wires so it is a reasonably fair bet that that loom was involved in the redirection of the fuel pump and/or ECU/ignition power for the immobiliser. It's also fair to be that the new immobiliser is essentially the same thing as the old one, and so it probably needs the same stuff done to make it do what it has to do. Given that you are talking about a car that no-one else here is familiar with (I mean your exact car) and an alarm that I've never heard of before and so probably not many others are familiar with, and that some wire monkey has been messing with it out of our sight, it seems reasonable that the wire monkey should be fixing this.
    • Wheel alignment immediately. Not "when I get around to it". And further to what Duncan said - you cannot just put camber arms on and shorten them. You will introduce bump steer far in excess of what the car had with stock arms. You need adjustable tension arms and they need to be shortened also. The simplest approach is to shorten them the same % as the stock ones. This will not be correct or optimal, but it will be better than any other guess. The correct way to set the lengths of both arms is to use a properly built/set up bump steer gauge and trial and error the adjustments until you hit the camber you need and want and have minimum bump steer in the range of motion that the wheel is expected to travel. And what Duncan said about toe is also very true. And you cannot change the camber arm without also affecting toe. So when you have adjustable arms on the back of a Skyline, the car either needs to go to a talented wheel aligner (not your local tyre shop dropout), or you need to be able to do this stuff yourself at home. Guess which approach I have taken? I have built my own gear for camber, toe and bump steer measurement and I do all this on the flattest bit of concrete I have, with some shims under the tyres on one side to level the car.
    • Thought I would get some advice from others on this situation.    Relevant info: R33 GTS25t Link G4x ECU Walbro 255LPH w/ OEM FP Relay (No relay mod) Scenario: I accidentally messed up my old AVS S5 (rev.1) at the start of the year and the cars been immobilised. Also the siren BBU has completely failed; so I decided to upgrade it.  I got a newer AVS S5 (rev.2?) installed on Friday. The guy removed the old one and its immobilisers. Tried to start it; the car cranks but doesnt start.  The new one was installed and all the alarm functions seem to be working as they should; still wouldn't start Went to bed; got up on Friday morning and decided to have a look into the no start problem. Found the car completely dead.  Charged the battery; plugged it back in and found the brake lights were stuck on.  Unplugging the brake pedal switch the lights turn off. Plug it back in and theyre stuck on again. I tested the switch (continuity test and resistance); all looks good (0-1kohm).  On talking to AVS; found its because of the rubber stopper on the brake pedal; sure enough the middle of it is missing so have ordered a new one. One of those wear items; which was confusing what was going on However when I try unplugging the STOP Light fuses (under the dash and under the hood) the brake light still stays on. Should those fuses not cut the brake light circuit?  I then checked the ECU; FP Speed Error.  Testing the pump again; I can hear the relay clicking every time I switch it to ON. I unplugged the pump and put the multimeter across the plug. No continuity; im seeing 0.6V (ECU signal?) and when it switches the relay I think its like 20mA or 200mA). Not seeing 12.4V / 7-9A. As far as I know; the Fuel Pump was wired through one of the immobiliser relays on the old alarm.  He pulled some thick gauged harness out with the old alarm wiring; which looks to me like it was to bridge connections into the immobilisers? Before it got immobilised it was running just fine.  Im at a loss to why the FP is getting no voltage; I thought maybe the FP was faulty (even though I havent even done 50km on the new pump) but no voltage at the harness plug.  Questions: Could it be he didnt reconnect the fuel pump when testing it after the old alarm removal (before installing the new alarm)?  Is this a case of bridging to the brake lights instead of the fuel pump circuit? It's a bit beyond me as I dont do a lot with electrical; so have tried my best to diagnose what I think seems to make sense.  Seeking advice if theres for sure an issue with the alarm install to get him back here; or if I do infact, need an auto electrician to diagnose it. 
    • Then, shorten them by 1cm, drop the car back down and have a visual look (or even better, use a spirit level across the wheel to see if you have less camber than before. You still want something like 1.5 for road use. Alternatively, if you have adjustable rear ride height (I assume you do if you have extreme camber wear), raise the suspension back to standard height until you can get it all aligned properly. Finally, keep in mind that wear on the inside of the tyre can be for incorrect toe, not just camber
×
×
  • Create New...