You have a fuel filter.
Is everyone running 87 Octane in 2010 4Runner?
- Thread starter 4RunnerTrail
- Start date
You have a fuel filter.
Will733
New member
mattleegee
New member
Was curious if any truth to this quote?
Anyone running 91+?
"The 1GR-FE is the 4.0 L version. Bore is 94 mm and stroke is 95 mm. Output is 236 hp (176 kW) at 5200 rpm with 266 lb·ft (361 N·m) of torque at 4000 rpm on 87 octane, and 239 hp (178 kW) at 5200 rpm with 278 lb·ft (377 N·m) at 3700 rpm on 91 octane. This engine features Toyota's VVT-i, variable valve timing system on the intake cam and a compression ratio of 10.0:1. An updated version of this engine features Dual VVT-i, increasing output to 254 hp (189 kW) and 270 lb·ft (366 N·m) on 87 octane and 285 hp (213 kW) and 289 lb·ft (392 N·m) on 91 octane. Inside, the 1GR uses a taper-squish combustion chamber design with matching pistons to improve anti-knocking and engine performance, while also improving intake and fuel efficiency. Toyota adopted a siamese-type intake port, which reduces the surface area of the port walls and prevents fuel from adhering to such walls. This engine has special cast-iron cylinder liners cast into the block, which are a spiny type to improve adhesion between the liner and cylinder block. With these special thin liners it is impossible to bore the block. In the event of cylinder wall damage (scoring, deep protrusions, etc), the entire cylinder block must be replaced. For increased block rigidity, the 1GR also receives a high temperature plastic insulator/protector, which fills the empty space between the outer portion of the cylinders and block material common to open deck engines. For increased cooling efficiency, the 1GR employs water passages between the bores of the engine. There are two such passages for each bank for a total of four. This reduces cylinder hot-spotting and keeps combustion chamber temperatures more uniform."
Anyone running 91+?
"The 1GR-FE is the 4.0 L version. Bore is 94 mm and stroke is 95 mm. Output is 236 hp (176 kW) at 5200 rpm with 266 lb·ft (361 N·m) of torque at 4000 rpm on 87 octane, and 239 hp (178 kW) at 5200 rpm with 278 lb·ft (377 N·m) at 3700 rpm on 91 octane. This engine features Toyota's VVT-i, variable valve timing system on the intake cam and a compression ratio of 10.0:1. An updated version of this engine features Dual VVT-i, increasing output to 254 hp (189 kW) and 270 lb·ft (366 N·m) on 87 octane and 285 hp (213 kW) and 289 lb·ft (392 N·m) on 91 octane. Inside, the 1GR uses a taper-squish combustion chamber design with matching pistons to improve anti-knocking and engine performance, while also improving intake and fuel efficiency. Toyota adopted a siamese-type intake port, which reduces the surface area of the port walls and prevents fuel from adhering to such walls. This engine has special cast-iron cylinder liners cast into the block, which are a spiny type to improve adhesion between the liner and cylinder block. With these special thin liners it is impossible to bore the block. In the event of cylinder wall damage (scoring, deep protrusions, etc), the entire cylinder block must be replaced. For increased block rigidity, the 1GR also receives a high temperature plastic insulator/protector, which fills the empty space between the outer portion of the cylinders and block material common to open deck engines. For increased cooling efficiency, the 1GR employs water passages between the bores of the engine. There are two such passages for each bank for a total of four. This reduces cylinder hot-spotting and keeps combustion chamber temperatures more uniform."
sandcrawler
Senior Member
same thread, couple pages back...
http://www.toyota-4runner.org/5th-g...ning-87-octane-2010-4runner-4.html#post626146
1engineer
Moderator
Are you talking about the HP numbers?
If so, then technically yes. In reality it's much more complex and I suggest you read [MENTION=51205]jreiter[/MENTION]'s and [MENTION=48413]Quentin[/MENTION]s posts a page or two back.
Chances are you can run 87 or 93 octane on a stock vehicle (no headers, no removal of cats, no cool nights, no intake mods, no ecu tuning etc) and not tell any difference with your butt dyno.
That quote is generally accurate but it seems like they are mixing and matching some of the pre-refresh 1GR (4th gen, early FJ) and the refreshed 1GR (5th gen, later FJ). For the 5th gen 4Runner, the engine is 270hp on 87 octane. I've not seen any mention of 285hp on 91 in any Toyota technical document in relation to the 4Runner.
Jeff614
New member
Some great info this thread, not just pertaining to our trucks. Thanks to all who've contributed!
As to filling when you see the tanker truck, is this as much a concern with gas engines as with diesels? I've personally had a lift pump gummed up in a 24 valve Cummins most likely caused by filling up while the tanker was churning up whatever grime was in the stations tank. I've always tried to avoid stations I see being refilled but feel like gassers could handle any crud a little better.
Personally only use 87. Passed up keeping an '07 GX with everything due to its thirst for premium.
- Jeff
As to filling when you see the tanker truck, is this as much a concern with gas engines as with diesels? I've personally had a lift pump gummed up in a 24 valve Cummins most likely caused by filling up while the tanker was churning up whatever grime was in the stations tank. I've always tried to avoid stations I see being refilled but feel like gassers could handle any crud a little better.
Personally only use 87. Passed up keeping an '07 GX with everything due to its thirst for premium.
- Jeff
Vegas Island
New member
I live in a very warm climate. I use 87 in my '12 Runner 95% of the time. I've used 89 a few times and noticed a difference. My ride seems to have a little more power when cruising the freeway with the air on which we do quite a bit here in Las Vegas between June and September. I'll certainly try the suggestions in this thread and probably go back to 87 once the weather cools down.
My question is, since were all asking, is there any truth to filling up your tank and getting more in it when the weather is cooler? I've heard that it's better to fill up at night or early morning due to some of the fuel evaporating as you fill your tank during warmer temperatures. My range gauge seems to be at a higher number during cooler temps. Right now a full tank is approximately around 360-370 mi. At cooler temperatures it seems like I can reach 400.
My question is, since were all asking, is there any truth to filling up your tank and getting more in it when the weather is cooler? I've heard that it's better to fill up at night or early morning due to some of the fuel evaporating as you fill your tank during warmer temperatures. My range gauge seems to be at a higher number during cooler temps. Right now a full tank is approximately around 360-370 mi. At cooler temperatures it seems like I can reach 400.
1engineer
Moderator
Read the whole first post here http://www.toyota-4runner.org/5th-gen-t4rs/102219-winter-gas-explained.html
2014 Warthog
New member
While there may be more evaporation on a hot day, that would account for an absolutely miniscule amount of lost gas. However there is some discrepancy due to the temperature and expansion of the gasoline itself:
http://www.consumerwatchdog.org/resources/DPReportHotFuelUSAJune07.pdf
But... The temp of the gas would not change in the underground tank from day to night, but might from month to month...
So yeah on a hot time of the year, your tank may top off at the same number of gallons as on a cold month but in fact with less total energy to burn so you get fewer miles than if you filled up with cold gas.
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taylour
New member
I've tried out the 87-octane no-ethanol gas at the newest Quick Trips around here. I've been able to get a little farther on the tank than the standard 10% ethanol gas. Not noticing any performance difference. I had tried 91 in my 2012 T4R and didn't have a noticeable difference..
You will see a decrease in mileage with use of gasoline containing Ethanol vs. "Clear Gas". This is due to the fact that the Kb (energy) Kauri-butanol value - Wikipedia, the free encyclopedia is less. This is what many realized when they started tracking their mileage with the increased Ethanol % in gasoline when thinking that it was good to "Go Green". Ethanol is a net loser for America when you consider the cost to plant, grow, harvest, process, and ship and blend the product. When you couple this fact coupled with the lower energy value, it becomes clear that without the government subsidies associated with it, it's use would dry up overnight. I've literally seen Ethanol plants shuttered overnight when the subsidies dried up at different points. It's another example of a costly program propped up by the taxpayer. Only the farmers and Ethanol producers benefit. Ethanol in fuel is corrosive as well, which is why it can take its toll on older vehicles not equipped to handle the exposure to elastomers and fuel system components. Sugar Cane is a much better Ethanol source than corn.
Key words here are "good 87 octane". Not all 87 Octane (or 89, 91, or 93 for that matter) are equal. My post in the link below explains why. Go to the Top Tier website in the post and look for the list of gas stations that participate in the program. Stick to those stations/brands and you will thank me later when your truck is still accelerating and performing to your expectations. Crap 87 Octane at your run of the mill gas station will leave more deposits over time vs. a quality brand. I work in the petroleum and fuel industry, and see data from fleet test results with various fuels regularly. If a person insists on filling up with just any gasoline, the "pop and pour" fuel treatment in a bottle will help some, but just like anything else, it's much better to prevent the problem than try to fix it later with treating one tank of gas and expecting miracles.
http://www.toyota-4runner.org/5th-g...-2014-sr5-after-lift-tires-4.html#post1772768
