effjay80
SILVER Star
10 around town and 13-15 on trips. Not much more blood to squeeze out of the stone beyond keeping tuned up and airing up tires.
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Your right...The best way to get better gas mileage out of your 80 is to buy a commuter car s***box and keep the 80 for road trips. I have a 2005 echo I beat on daily.
All that got looked at about 5 years back when I did the head gasket.Even better is a motorcycle....
@GW Nugget are you planning on replacing any fuel parts, ie fuel filter, fuel pump, injectors, fuel pressure regulator etc.
Yes kind of... I did put in full tank of 89 oct. then advanced the timing till it pinged, then rolled it back till it didn't ping. Result was better bottom end response. It will now pull my trailer up hills better with 91 oct.Are you tuned for 89octane? A higher octane fuel is inherently more difficult to ignite and unless the timing is advanced, requiring the octane to ward detonation you're not helping your cause.
I agree, but use Chevron locally, because the other fuel in my town has more Ethanol in it. I try to stay away from Ethanol...Good points (above). Chevron gas around here is generally quite expensive. I've run 85 octane (at altitude), no problem.
Stock compression IS low, which makes for an octane friendly engine.
Ooops. Now fixed. CXRACING HEAT WRAP / HEATSHIELDAwesome work! Watching And link for heat wrap goes to a blogging thing
I'm open to suggestion.In my opinion, you are asking for trouble in plugging the PCV valve. The valve is supposed to be calibrated to balance out the pressure differences between blowby gasses on the bottom with manifold vacuum on the top. Without that differential, you are going to have more pressure in the crankcase at times, leading to more oil leaks and a few other possible problems. If the goal is more vacuum, then you should be looking at the largest source of vacuum loss; the throttle plate. Keeping the throttle plate closed will definitely increase fuel mileage.
I think the Ultra Gauge has a timing feature. I will look into that since I have been asked here twice.@GW Nugget what is your base timing set at? Did you check to see if your tstat is stuck open? My 80 is at full temp in about 3/4 mile this time of year.
Last time I did mileage in my 80 I got 17.0mpg all highway between Flagstaff and Kanab cruising at about 70mph. That's a pretty light 80 loaded with 8 days of camping gear and me. Truck has a 3" lift, 35" mud terrains and part time 4wd. Motor is stock other than base timing set about 7 degrees, a 170 tstat (which hurts MPG's) and a 2.5" exhaust with a magnaflow cat and flowmaster. I run all synthetic fluids and 91 octane in low elevations or high temps, 87 is fine where I live (7000ft) all but a few weeks out of the summer.
One of the big culprits of poor fuel economy in 80's is fuel boiling off due a non functioning evap system. I just went through my evap system before the 17mpg trip, as well as a lot of the PM's you did already. Ethanol content is another killer, as it lowers the boiling point of gasoline - and it just sucks all around. You can test for ethanol content with a graduated cylinder or one of the test kits out there if you want to log that as well. I usually get shell gas, their premium is usually around 5% ethanol and 87 is around 8-10%. I get about 10% worse fuel economy with 10% ethanol VS ethanol free.
Your right...
All that got looked at about 5 years back when I did the head gasket.
Yes kind of... I did put in full tank of 89 oct. then advanced the timing till it pinged, then rolled it back till it didn't ping. Result was better bottom end response. It will now pull my trailer up hills better with 91 oct.
I am willing to put in 87 octane for daily duty status to see if the is any improvement. I will try the mashing throttle trick to check for pinging with 87 oct.
I agree, but use Chevron locally, because the other fuel in my town has Ethanol in it. I try to stay away from Ethanol...
Ooops. Now fixed. CXRACING HEAT WRAP / HEATSHIELD
I'm open to suggestion.
I can route the PCV hose in front of the throttle body (throttle plate). I would need to Tee into the same hose as the current air vent which in my mind is sucking gases out of the crankcase when the engine is running.
As far as Don being a good friend I don't know if you are messing with me on the throttle plate statement???
I think the Ultra Gauge has a timing feature. I will look into that since I have been asked here twice.
A thermostat is cheap, I can look into that also I put in a new one in 2015. Mine I can hear on cold mornings open & closer while on warm up around 180*
I could get better mileage if I went longer distances, with the improvements my guess is 16 because before my instant mpg was 13-16 now is 18-21 mpg at 55 mph.
I have a new Delco charcoal canister on my rig so I hope the evap system works???
As far as Ethanol I will look next time at the pump.
If you are going by the factory coolant temp gauge then your actual temp is only about 145-150 when the gauge reaches the normal hot indication.@GW Nugget what is your base timing set at? Did you check to see if your tstat is stuck open? My 80 is at full temp in about 3/4 mile this time of year.
Last time I did mileage in my 80 I got 17.0mpg all highway between Flagstaff and Kanab cruising at about 70mph. That's a pretty light 80 loaded with 8 days of camping gear and me. Truck has a 3" lift, 35" mud terrains and part time 4wd. Motor is stock other than base timing set about 7 degrees, a 170 tstat (which hurts MPG's) and a 2.5" exhaust with a magnaflow cat and flowmaster. I run all synthetic fluids and 91 octane in low elevations or high temps, 87 is fine where I live (7000ft) all but a few weeks out of the summer.
One of the big culprits of poor fuel economy in 80's is fuel boiling off due a non functioning evap system. I just went through my evap system before the 17mpg trip, as well as a lot of the PM's you did already. Ethanol content is another killer, as it lowers the boiling point of gasoline - and it just sucks all around. You can test for ethanol content with a graduated cylinder or one of the test kits out there if you want to log that as well. I usually get shell gas, their premium is usually around 5% ethanol and 87 is around 8-10%. I get about 10% worse fuel economy with 10% ethanol VS ethanol free.
In my town from 87 to 89 octane, there is 10 cent difference per gallon, that's $2.20 per tank. (To me that's not a big deal.)If you've advanced timing you likely need higher octane. But at what cost of power?
You're spending more money for what, 10hp? Maybe.
Another way to look at it is that at 12.5 mpg the $.10 difference in cost is $.01 for every mile you driveIn my town 87 to 89 octane is 10 cents per gallon, thats $2.20 per tank.
I will put in 87 octane next fill up to test for pinging, but will leave the timing were it is no matter because it works good where it is for towing my trailer.
I've wondered about the effects of some kind of air dam up front and possibly some skirts down the sides. Someone once posted here that turbulent air going under the vehicle creates a surprising amount of resistance.
Since the vast majority of my driving is short trips around town, where I get 10 - 11.5mpg, I'm intrigued by those exhaust sweaters...
^^^^ThisI was having a discussion with my 20 year old a couple of days ago about octane ratings. His mechanic told him he should be using premium, but his justification for why didn't stand up to logic.
Found this from the Federal Trade Commission, among loads of other articles
I use the torque app on an old android phone, the stock gauge shows the same temp from about 160 until 230 then starts to climb. That’s about 95% more deadband than I am comfortable withIf you are going by the factory coolant temp gauge then your actual temp is only about 145-150 when the gauge reaches the normal hot indication.
What octane does the toyota owners manual call for?
What was the mechanics justification and what is the car?I was having a discussion with my 20 year old a couple of days ago about octane ratings. His mechanic told him he should be using premium, but his justification for why didn't stand up to logic.
Found this from the Federal Trade Commission, among loads of other articles
Right? Way too much of a dummy gauge. You can pry my scangauge from the clutch of my skele-fingers.I use the torque app on an old android phone, the stock gauge shows the same temp from about 160 until 230 then starts to climb. That’s about 95% more deadband than I am comfortable with
For the 80 series, 87 octane.