Mike Litherous
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- Jan 18, 2016
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hey chaps.
Just had my first experiment with e85 to “cure” a rich running car. Had to swap an airflow meter in an old car and was way too rich even after playing with the spring. It ran really sweet on a 50/50 mix so I wanna play abit further
Just a few Qs
1/ Any issues with running E85 in an “older” car with a metal fuel tank?
2/ Does straight E85 or a blend read same on the wideband with air fuel gauge in terms of lambda. Stoic for petrol being 14.7:1 and for e85 being 9.8:1. On the gauge it reads as it’s petrol so do u think in terms of lambda (ie 0.85ish @ wot for NA and 0.8ish for FI) so 8.3:1 actual in e85 reads as 12.8:1?
3/ Do u setup the same in terms of A/F ratio (read on the gauge) or slighly leaner than petroleum based fuel.
4/ providing u have the fuel capacity in the pump, is it as simple as adjusting fuel pressure and/or injector size to run e85. (ie I run 60lb/hr injectors on one car and dialed the fuel pressure back from 3.5 bar to 2.5 bar to run nice on Ron98. Increasing back to 3.5 bar should get me close to ideal for e85? - correct thinking or not?).
5/ do u run same spark plug gap?
Sorry for all the questions. Run an estimated amount but will fit wideband with A/F gauge tomorrow as I don’t want to run dangerously lean
Just had my first experiment with e85 to “cure” a rich running car. Had to swap an airflow meter in an old car and was way too rich even after playing with the spring. It ran really sweet on a 50/50 mix so I wanna play abit further
Just a few Qs
1/ Any issues with running E85 in an “older” car with a metal fuel tank?
2/ Does straight E85 or a blend read same on the wideband with air fuel gauge in terms of lambda. Stoic for petrol being 14.7:1 and for e85 being 9.8:1. On the gauge it reads as it’s petrol so do u think in terms of lambda (ie 0.85ish @ wot for NA and 0.8ish for FI) so 8.3:1 actual in e85 reads as 12.8:1?
3/ Do u setup the same in terms of A/F ratio (read on the gauge) or slighly leaner than petroleum based fuel.
4/ providing u have the fuel capacity in the pump, is it as simple as adjusting fuel pressure and/or injector size to run e85. (ie I run 60lb/hr injectors on one car and dialed the fuel pressure back from 3.5 bar to 2.5 bar to run nice on Ron98. Increasing back to 3.5 bar should get me close to ideal for e85? - correct thinking or not?).
5/ do u run same spark plug gap?
Sorry for all the questions. Run an estimated amount but will fit wideband with A/F gauge tomorrow as I don’t want to run dangerously lean