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

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.

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

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.

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....