Does anyone have any experience with using E85 in a Z32? Mine is a '93 N/A. I know it is a very involved mod, but I want to know if it can be done?
Obviously you would need to swap out a lot of the fuel lines, and possibly the tank to handle the alcohol content in the fuel. Does anyone know about injectors? Would you need larger ones? Or would the Z32 be able to handle the E85 on the stock injectors? The Fuel pump, I imagine, will also need to be replaced with an E85 rated pump.
Would it be possible to make the stock ecu run the E85? Or would you need a custom ecu? or is there some sort of aftermarket module that you can wire in to change the signal from the computer before it reaches the injectors that you could use to tune the injector pulses?
I know many hondas and other cars in my area have been tuned to E85 for not a lot of money, but I am not really sure what all the process involves. Most people say you can get about a 10% increase on a car that has little to no mods, and up to 25-30% increase on a heavily modded car in terms of horsepower and torque gain. I know 10% on top of about 240hp is only 24 horse, but I would think with all the engineering that went into the Z they could probably pull a little more than that out of E85.
I am also planning to make a fuel cell and do an engine swap down the road to make more power, so having an E85 pump and lines already set up would be beneficial to the new engine as well.
Thanks for any help anyone can give!!!
Z32 E85 Setup?
Re: Z32 E85 Setup?
Read a LONG post on another forum about this. Someone did it on their daily driver... I think it was a honda. Sounds like the easiest way to do it would be to get larger injectors to handle the flow, and increase the fuel pressure by about 30% or so, using an aftermarket Fuel Pressure Regulator to boost the flow. From there, the post claims that most computers will compensate with 02 sensors until the perfect mixture is found... Almost sounds a little too easy to me... Does anyone have any experience with this?
Re: Z32 E85 Setup?
Read a LONG post on another forum about this. Someone did it on their daily driver... I think it was a honda. Sounds like the easiest way to do it would be to get larger injectors to handle the flow, and increase the fuel pressure by about 30% or so, using an aftermarket Fuel Pressure Regulator to boost the flow. From there, the post claims that most computers will compensate with 02 sensors until the perfect mixture is found... Almost sounds a little too easy to me... Does anyone have any experience with this?
Re: Z32 E85 Setup?
Was hoping for some suggestions on the setup, but I think I'm going to end up replacing the stock Fuel Pressure Regulator with an adjustable one, and I will keep the lines and hoses all stock. Many people claim that it is only Methanol that causes corrosion, not ethanol. So I will keep them stock for now, and if it leaks, I will replace the parts at that point.
My question now is, do the turbo and the n/a z32 share the same injector size? If so, shouldn't the injector be way oversized for the n/a, and therefore should be able to produce more fuel flow than the n/a would need? If so, I may try to run my stock injectors and increase fuel pressure with e85, and see if I can get a good tune without over-pressurising the injectors. If I can't get enough fuel in at that point I will upgrade my injectors.
As I said, I'm planning an engine swap within the next year or two, so I don't want to spend too much on upgrading an engine I won't be keeping for long. The Fuel Pressure Regulator and gauges, however, should all transfer over to the new engine, and are therefore a relavent mod for me.
Does anyone know if the injectors for the turbo and n/a are the same?
My question now is, do the turbo and the n/a z32 share the same injector size? If so, shouldn't the injector be way oversized for the n/a, and therefore should be able to produce more fuel flow than the n/a would need? If so, I may try to run my stock injectors and increase fuel pressure with e85, and see if I can get a good tune without over-pressurising the injectors. If I can't get enough fuel in at that point I will upgrade my injectors.
As I said, I'm planning an engine swap within the next year or two, so I don't want to spend too much on upgrading an engine I won't be keeping for long. The Fuel Pressure Regulator and gauges, however, should all transfer over to the new engine, and are therefore a relavent mod for me.
Does anyone know if the injectors for the turbo and n/a are the same?
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javadave
- Posts: 46
- Joined: Wed Aug 13, 2014 4:32 pm
- Car: 1990 300ZX 2+2 NA 5-Speed
- Location: Georgia, USA
Re: Z32 E85 Setup?
The n/a came with 270cc injectors, the TT came with 370cc injectors.
Most people upgrade the TT's injectors along with other items to increase hp. You can have a look at this to help identify the injectors in your car if needed. Z32 Wiki - Injectors
Most people upgrade the TT's injectors along with other items to increase hp. You can have a look at this to help identify the injectors in your car if needed. Z32 Wiki - Injectors
Re: Z32 E85 Setup?
Thanks javadave!
So... The average increase in flow needed from gasoline to ethanol is about 30-40%. If you divide 370 and 270 you get around 37.5% increase in injector size.
^^^On top of that, you can actually force injectors to flow more fuel by increasing pressure, which will force the fuel to come out faster, even though the injector is the same size... So if I swapped to the Turbo injectors, I should be able to do up to a 45% or so increase in flow if I need to. Which should be plenty...
I'll take a look at prices of the stock injectors for the Turbo, vs just getting aftermarket ones. If I can get one cheaper than the other, I will go with that one. With the exhaust and intake setup that I am running, I think I am already going to need a little extra shot of fuel. My math so far is showing about a 45% increase should get me pretty close to the right ratio for daily driving with ethanol (of course, with an adjustable FPR I could always lean out the mixture a bit for racing and go back to my Daily setting anytime).
So... The average increase in flow needed from gasoline to ethanol is about 30-40%. If you divide 370 and 270 you get around 37.5% increase in injector size.
^^^On top of that, you can actually force injectors to flow more fuel by increasing pressure, which will force the fuel to come out faster, even though the injector is the same size... So if I swapped to the Turbo injectors, I should be able to do up to a 45% or so increase in flow if I need to. Which should be plenty...
I'll take a look at prices of the stock injectors for the Turbo, vs just getting aftermarket ones. If I can get one cheaper than the other, I will go with that one. With the exhaust and intake setup that I am running, I think I am already going to need a little extra shot of fuel. My math so far is showing about a 45% increase should get me pretty close to the right ratio for daily driving with ethanol (of course, with an adjustable FPR I could always lean out the mixture a bit for racing and go back to my Daily setting anytime).
Re: Z32 E85 Setup?
Looks like re-manufactured TT injectors will be the cheapest. Some are around $200 for a set of 6. The cheapest I've seen anywhere new is about $300, but you need a $100 adapter kit to fit the new-style connector, even though they are the old-style injector... Seems like a waste.
My question is, are the newer style an improvement on the old-style? Or are they just different?
My question is, are the newer style an improvement on the old-style? Or are they just different?
Re: Z32 E85 Setup?
I see that the new style is a "pintle-less" design, which they claim handles Ethanol better. Beings that is my goal, I should probably get the new style...