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lead or boost
Posted: 24 May 2008, 12:39
by gally
hi all
just wondering if i should use valvemaster lead replacement or octane boost in my petrol.
it says on filler cap use 98 ron petrol cap,which is hard to find.
my van is 2.1 86 auto.
cheers
gally
Re: lead or boost
Posted: 24 May 2008, 13:26
by Grun
gally,
A 2.1DJ will run on 95 unleaded if the ignition is (or has been) retarded 5 degrees from the standard setting (IIRC).
Mine runs beautifully on 95 as the timing had been reset by the previous owner.
Mike
Re: lead or boost
Posted: 24 May 2008, 13:38
by Grun
Just to confirm,
Mr. Haynes says.....
2.1 DJ for 98 octane fuel... 10 degrees BTDC (Plus or minus 1 degree) at 800 RPM vacuum disconnected.
2.1 DJ for 95 octane fuel... 5 degrees BTDC (minus 1 degree) at 800 RPM vacuum disconnected.
RPM tolerance is plus or minus 50 RPM
Mike
Posted: 26 May 2008, 12:43
by gally
thanks mike
ill do that then.but in the meantime can i use valvemaster
or will it do any harm.
cheers
gally
Posted: 26 May 2008, 13:04
by toomanytoys
These engines were designed to run on unleaded, so no need for any addatives..
As said.. if it is a "DJ" code engine, then you must run on 97/98/99UL if timed at 10 deg BTDC, if it has been set to 5 deg BTDC then you can use 95UL..