Quote:
Originally Posted by oil pan 4
I had lean burn in my 5 speed, 3.42 rear end, 2.8L v6 camaro and the best it ever did was 30mpg on the highway.
Water injection on gasoline engines with a normal compression ratio doesn't seem to do anything.
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Yes some got 35MPG.
Problem is your stock engine has a torque peak at 2800RPMs, so if you drop much below it the MPGs will also drop.
I am building an engine that will peak at 2000 so should get great MPG at 1500+ RPMs.
So I needed a replacement engine, and had already started on it in 2005, so most of the costs were already done. but I replaced the van it was meant for...
And I want to test my ideas on how to make a van get20 to 30MPG...remember I started this project back in 2000.
IF I was rich I would just buy a 2017+ Express van with anew 29/30MPG setup, but I do not have 30K to spend, so on with my build.
So I will be happy with 20MPG.
Damn my 03 Crown Vic P71 (ex cop car) just made a run of 416 miles and got 18/22MPG on the highway...
My 2000 Mercury grans Marques was able to get 24/26 MPG highway.
So if I can match that in a full size van I am good.
Rich
PS water injection may add a little and EGR and water will lower its NOX output keeping it clean.