[SIZE="2"]The rod on the pump is spring loaded so I dont think there is any kind of adjustment. THEY ARE CHANGING THE LOBE PROFILE. JUST NOT SURE HOW. Cant look at my spare cams to see how they could be changed . Slightly smaller base circle or lobe profile. A slightly smaller base circle would give you a longer pump stroke limited to the remaining travel in the pump itself

 

The change in the cam profile will change the spring compressions per revolution. What I am worried about, is long term. Is the current spring designed to take the abuse?

 

Without having a cam here on Vacation to look at I cant say for sure but I will guess their changing the base circle slightly. Smaller base circle with the same lobe would give you a longer pump rod stroke and a bit more fuel pumped each rotation of the cam. This would work good on the stock turbo for E85

 

OK When can I get this Cam

 

Yeah I need this cam for the 2 door. The 4 door is back to complete stock so it runs E85 fine.

 

ahhhh I see now. I know they're obviously chaging the profile somehow, I had just never taken one of these hp pumps apart so I wasn't really familiar of the inner workings. I was stuck on thinking rocker arms and lash adjustments.

So you should be absolutely correct then. Changing the base circle would absolutely create more lift, but at what sort of ramp angle are we talking now? Is it such an aggressive ramp angle that there is a risk for float in the higher rpm range? Is there a way of stiffening the pump spring to avoid this potential issue?

 

Okay, can someone give me a 100% clear answer, i have a cai,cp's, and 3inch catless dp with a trifect 23psi tune, if i do e85 on the stock turbo, is it safe on everything clutch, flywheel, ect, and are there any issues other then hard starts on cold days, sorry i know ive asked alot but i want to be 100% before i take the leap!
thanks!

 

This is what I was suggesting, considering the spring is almost overworked as it sits.

 

With all those mods you have the potential to run out of fuel. Cold starts can be an issue in very cold weather. Every car is different. I recommend starting at E47 and working your way up to full E85 to see if your fuel system can handle it.

 

I think the ZZP cam will do the job for us on e85 with the stock TURBO

 

would e47 run fine then? what is that mixure btw? 1:1?

 

I would personally just stick with an E47 blend and call it a day. Less strain on the fuel system and the gains of going from 47% to an 85% blend are pretty minimal at this point.

And yes, E47 is a 1:1 blend of E10 93octane (or e10 91.. whichever is available) and E85

 

whats the deal with the pump? info, price?

 

how do you mix it so its perfect? what do you guys do that are running e47?

 

Subd

 

it's really quite simple as far as the mixing goes assuming you have e85 in your area all year round. Seeing as how you're in a colder climate, they usually do not run e85 all year round. Generally during the winter months they drop the ethanol percentage down to about 70%. But to be honest, as long as you aren't running a rediculous ***** to the wall aggressive tune, you should be fine all year around with doing a 1:1 mix.

For example: if you have a half a tank and only need say... about 6 gallons to fill up. Then add 3 gallons of e85 and 3 gallons gas. 3gallons:3gallons = your 1:1 mix.

same goes for if you're getting close to empty and you want say.. about 10 gallons total. Now add 5 gallons e85 and 5 gallons gas. It doesn't get much easier of a mix than that. Whatever you add in e85, you add that same exact amount in e10. Here is a very simple and easy calculator anyone can use to determine their ethanol to gas mix.

Miles Per Dollar Calculator

use the middle chart to calculate your percentages

 

thanks man!!

 

Seems like a lot of work and trouble. What happens if you mess up once and you put to much 91 then not enough e85?

 

What's the best/most up to date online E85 locator?

 

the mix doesn't have to absolutely perfect every time. You should try to generally be in the ball park but you don't need to be absolutely perfect. I've had no issues going from running a 1:1 mix of e70:e10 93oct to e85:e10 93 oct all while running 22psi and 22* of timing. Trims went a little off, but aside from that nothing really needed tweaking

No offense man, but this just doesn't seem worth the while for someone like yourself. I personally didn't think it was worth the hastle at first either myself until I tried it. I love the cheap and easy power increase with no other modding other than simply retuning the car. To each his own though.. this just might not be the best route for you if you're not willing to put in the little extra effort

 

^^ this

 

Hey,

Does this help the flow issues with E85, meaning cold starts are easier to accomplish, no more priming etc?

Aeromotive stealth fuel pump from ZZP

 

That's the in tank pump i belive

We need more flow and pressure on the high pressure engine side.

 

I've had no issues with fueling running full E85 Mike.. Fully bolted and running strong. Like I've stated earlier in this thread, the car will occasionally pop a low pressure rail code. Not all the time when I go pass 120 mph..

....I got your name from the thread you posted on MSF.org

 

haha, I was like he must have gotten my name from the PM, but then I was like, I don't remember giving it to him.

LOL,

Everyone on MSF.org thinks I should trade up. I'm still undecided.