fuel type

no 1 lampy · 02-02-2006, 07:06 PM

hi there guys . am a newbie to this forum so please excuse me if ths question has come up before.
am now on my 3rd mkii
my question is what type of fuel can i use (unleaded or super unleaded) and do i need to do any mods to run on unleaded.
the last 2 mkiis i owned, i only ever ran on 4 star or lrp. i have now recently bought an almost perfect 1986. however leaded is not available in the uk any more. can i run her on unleaded and do i need to do any timing changes. also am i better off with standard unleaded or should be using the higher octane super unleaded.

cheers
mark

TONY! · 02-11-2006, 02:08 PM

I would follow what the manufacturer recommends.
There must be a sticker somewhere on the car, check the glove box.
I would also think that the manual would tell you what you should feed it too.

If I were to guess, I would say that you could use the regular unleaded.
If you hear pinging, go to a higher octane gas.

If you have an '86, then your compression ratio is 9.2:1
That does not sound so high to me.
High compression ratio engines and forced induction engines (supercharged/turbocharged) will need higher octane fuel so they don't ping.

Unless you have a lot of carbon build up (which would increase your actual compression ratio), I would bet that the regular is good enough for you.

no 1 lampy · 02-14-2006, 04:33 PM

hi there thanks for that.

have now spoken to toyota uk
they said about the same

the car was originally designes to run on leaded.
i can run it on standard unleaded by retarding the ignition timing by 2-3 degrees

mark

TONY! · 02-14-2006, 10:48 PM

Glad I could help

Sometimes I forget that I had an MKII also. heheh
Now that I think of it, I just used regular unleaded when I had it.
I should have mentioned that.

I will post my MKII in my own thread later for you MKII'ers and ask you guys what you think of it....but that is another topic.

hangsupra · 02-28-2006, 06:37 AM

try to use the standard unleaded fuel... if dont have the standard/regular unleaded one then try to use the higher octane one and see if it makes any differece....

02-02-2006, 07:06 PM	#1
no 1 lampy Stock Join Date: Feb 2006 Posts: 2	fuel type hi there guys . am a newbie to this forum so please excuse me if ths question has come up before. am now on my 3rd mkii my question is what type of fuel can i use (unleaded or super unleaded) and do i need to do any mods to run on unleaded. the last 2 mkiis i owned, i only ever ran on 4 star or lrp. i have now recently bought an almost perfect 1986. however leaded is not available in the uk any more. can i run her on unleaded and do i need to do any timing changes. also am i better off with standard unleaded or should be using the higher octane super unleaded. cheers mark

02-11-2006, 02:08 PM	#2
TONY! 12psi boost Join Date: Sep 2005 Location: Troy, NY 12180 Posts: 353	I would follow what the manufacturer recommends. There must be a sticker somewhere on the car, check the glove box. I would also think that the manual would tell you what you should feed it too. If I were to guess, I would say that you could use the regular unleaded. If you hear pinging, go to a higher octane gas. If you have an '86, then your compression ratio is 9.2:1 That does not sound so high to me. High compression ratio engines and forced induction engines (supercharged/turbocharged) will need higher octane fuel so they don't ping. Unless you have a lot of carbon build up (which would increase your actual compression ratio), I would bet that the regular is good enough for you. __________________ -------------> ITEMS THAT ARE STILL AVAILABLE FROM AN '88 PART OUT <------------- _____\|_____ /. . . \ . . . \ . .\ ( ]/ . . . . \ . . . \ . .\[ ) _________________ /OO]====(W)====[OO\ [___________________] [ [O] ///______\\\ [O]_] ____________________[\|\|]______________[\|\|]____________________

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02-14-2006, 04:33 PM	#3
no 1 lampy Stock Join Date: Feb 2006 Posts: 2	hi there thanks for that. have now spoken to toyota uk they said about the same the car was originally designes to run on leaded. i can run it on standard unleaded by retarding the ignition timing by 2-3 degrees mark

02-14-2006, 10:48 PM	#4
TONY! 12psi boost Join Date: Sep 2005 Location: Troy, NY 12180 Posts: 353	Glad I could help Sometimes I forget that I had an MKII also. heheh Now that I think of it, I just used regular unleaded when I had it. I should have mentioned that. I will post my MKII in my own thread later for you MKII'ers and ask you guys what you think of it....but that is another topic.

02-28-2006, 06:37 AM	#5
hangsupra 12psi boost Join Date: Jan 2005 Location: 209 area in cali. Posts: 397	try to use the standard unleaded fuel... if dont have the standard/regular unleaded one then try to use the higher octane one and see if it makes any differece....