E-85 MEGA THREAD
#212
Addict
Rennlist Member
Rennlist
Small Business Partner
Rennlist Member
Rennlist
Small Business Partner
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Just to cover off something else. So if we assume that E85 will vary through the year in terms of how much
Ethanol there is in the mix should we all be running those fuel sensors somewhere along the line?
What do those fuel sensors do with the information? Can they talk to a piggy back or ECU / Standalone?
Can these then adj timing or boost depending on the read?
Ethanol there is in the mix should we all be running those fuel sensors somewhere along the line?
What do those fuel sensors do with the information? Can they talk to a piggy back or ECU / Standalone?
Can these then adj timing or boost depending on the read?
But really, I haven't had that much of an issue with drifting tune using E85 year round here in Colorado. And not enough to justify the $400 sensor, and the time to bother with making the circuit, then changing DME SW to use it. I guess if it that much of a concern, I'll look into it.
![Confused](https://rennlist.com/forums/images/smilies/confused.gif)
-Rogue
#213
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
So do you monitor it or just leave it as is and monitor knock counts or????
#214
Addict
Rennlist Member
Rennlist
Small Business Partner
Rennlist Member
Rennlist
Small Business Partner
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
I monitor AFR and knock of course (EGT as well). Perhaps a little global change is needed between winter and summer blends, but otherwise I don't change my tune much (not for ethanol content anyway).
#215
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Ok thanks R.A.
#218
Addict
Rennlist Member
Rennlist
Small Business Partner
Rennlist Member
Rennlist
Small Business Partner
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
That high of CR, I wouldn't push much past 15psi... The NA pistons simply aren't as tough as the turbo ones.
But that should make some good power, and have great drivability - I know mine does, and I'm running a full point less CR then that
But that should make some good power, and have great drivability - I know mine does, and I'm running a full point less CR then that
![Wink](https://rennlist.com/forums/images/smilies/wink.gif)
#219
Rennlist Member
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Nice! Must be very responsive. Get some in car video Joshua.
#220
Race Car
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Depends on the year of engine. The early engines used forged pistons, while the later used cast. I have ran both and broken the later ring lands at around 25psi.
It does make a nice little difference in drivability using the higher compression. At this moment I am swapping my high compression engine into my driver car and using the lower compression engine in my lightweight. I was just doing a clutch, but have decided to have a little more fun too.
![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
#221
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
With no detonation, I don't see how the pistons would come apart.
#222
Race Car
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
weak ringlands between the top and second ring. The added pressure from the top ring ***** against the land which is not very strong on old cast units
I have a full knock monitoring setup on, and they do break due to pressure.
I have a full knock monitoring setup on, and they do break due to pressure.
#223
Addict
Rennlist Member
Rennlist
Small Business Partner
Rennlist Member
Rennlist
Small Business Partner
#225
![Default](https://rennlist.com/forums/images/icons/icon1.gif)
Side skirts also have less material giving less "rock" controll. not sure if the pins are pressed or full floating.. also makes a big difference.. considering 951, im guessing floating.