1JZ fuel type

89_1j · 03-11-2009, 11:03 PM

All of the specs on the 1JZ say "fuel type: unleaded premium." Is premium required or is it just better for it? Also, is there an easier way to do the wiring on a 1jz? Ive heard they make a wiring harness thats like an adapter when installing in a mkiii. If there is such thing where could i find one and how much would it cost?

mirage83 · 03-12-2009, 12:45 PM

As far as premium fuel goes the higher octane is used to help prevent knocking/detonation. You can use lower octane fuel (many people do), but you increase the chance of real internal damage to your engine. For myself, I don't risk it where my GTE is concerned. It's a little more expensive per gallon, but less expensive than replacing pistons, valves, etc.

Not sure about the wiring issue, have to look around on that one.

89_1j · 03-12-2009, 05:27 PM

That's pretty much what i figured but I wanted to be sure. My baby will get nothing but the best. Thanks for the help.

drewtiss · 04-30-2009, 05:22 AM

Quote:

Originally Posted by 89_1j

All of the specs on the 1JZ say "fuel type: unleaded premium." Is premium required or is it just better mirror for it? Also, is there an easier way to do the wiring on a 1jz? Ive heard they make a wiring harness thats like an adapter when installing in a mkiii. If there is such thing where could i find one and how much would it cost?

Yeah he's right on that matter. I also think that it's a little more expensive per gallon. I think I saw something on this forum about the wiring hareness.

supradaddy0803 · 04-30-2009, 10:04 PM

Yeah the price difference is kinda self explanatory the better gas is always more expensive. As for the wiring I think there a few people on here that make a plug and play harness adapter you will just have to ask around.

03-11-2009, 11:03 PM	#1
89_1j Stock Join Date: Mar 2009 Location: WA Posts: 7	1JZ fuel type All of the specs on the 1JZ say "fuel type: unleaded premium." Is premium required or is it just better for it? Also, is there an easier way to do the wiring on a 1jz? Ive heard they make a wiring harness thats like an adapter when installing in a mkiii. If there is such thing where could i find one and how much would it cost? Last edited by 89_1j; 03-11-2009 at 11:07 PM.

04-30-2009, 10:04 PM	#5
supradaddy0803 12psi boost Join Date: May 2006 Location: Athens, TX Posts: 308	Yeah the price difference is kinda self explanatory the better gas is always more expensive. As for the wiring I think there a few people on here that make a plug and play harness adapter you will just have to ask around. __________________ 1987 supra NA 5 speed 1JZGTE swap Tokico Illumina 2 and Eibach springs Tokico pillow blocks Suspension Techniques front and rear sway bar HKS super dragger cat-back exhaust plus test pipe Greddy Profec B spec 2 boost controller HKS type 1 turbo timer Supra sport solid steel drive shaft Walboro 255 fuel pump JZA70 Front end mod 18" Volk Racing AV3 18x8.5 front 18x9.5 rear

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03-12-2009, 12:45 PM	#2
mirage83 12psi boost Join Date: Feb 2007 Location: Georgia Posts: 359	As far as premium fuel goes the higher octane is used to help prevent knocking/detonation. You can use lower octane fuel (many people do), but you increase the chance of real internal damage to your engine. For myself, I don't risk it where my GTE is concerned. It's a little more expensive per gallon, but less expensive than replacing pistons, valves, etc. Not sure about the wiring issue, have to look around on that one.

03-12-2009, 05:27 PM	#3
89_1j Stock Join Date: Mar 2009 Location: WA Posts: 7	That's pretty much what i figured but I wanted to be sure. My baby will get nothing but the best. Thanks for the help.