Notice: We request that you don't just set up a new account at this time if you are a previous user. If you used to be one of our moderators, please feel free to reach out to Chris via the facebook Outerlimits4x4 group and he will get you set back up with access should he need you.
Recovery:If you cannot access your old email address and don't remember your password, please click here to log a change of email address so you can do a password reset.
Hi guys i have a SWB on Gas/petrol and need have been timing it to 10.
The car runs on gas 99% of the time it only ever runs on petrol to get to a servo or every 3 months or so we run it on petrol for a 20kms or so to lube the seals or something. I'm not sure if u are ment to time them more advance then 10 to run on gas?
If it's been on 10 what do u suggest remebering it's barlely ever driven on petrol unless needed.
Not sure if making the timming more advanced will make the car go better ???
up to 15degrees advance at idle makes it more spritely on gas but i found it pings its ass off on unleaded mind you the unleaded has probly been in the tank since christmas. I was told not to do this with the factory dizzy instead have a petronix electrical unit fitted with a specific LPG curve to suit.
Oh ok so with factory ignition and timming what do u think i should set it at?
I was thinking of getting that Petronix ignition with the flamethrower II at a later daye as i'm replacing the engine as we speak with another TB42 done 180,000KMS instead on the engine right now done 427,000KMS and never with a rebuild or anything
Does advaning the timming from 10 or higher make any performance increasement or anything like that?
And when you said when you run it on fuel it ping it's head off will thise cuase any damage to the engine or anything?
The only reason i'm is becuase maybe i could get this going a little bit better thought advancing the timmign a bit will make it go a bit better becuase when i ran it on fuel the other day it went better on fuel then gas thought this was werid or is this normal but like i said i never use fuel so why have it tunned to it rather have more HP with gas
I dont really understand your post. Did you read it????
Sounds like you'd better off taking your car to a mechanic as advancing your timing if you dont know what detonation is will most likely see you finding another TB42.
If you are not sure leave it at 10 deg they run fine.
all the gas cars i have owned 3 vaccum advance is blocked you dont need advance with gas set timing so it runs fine block vaccum advance see how it gos
I have my timing on 17 degrees with the vacuum advance connected.It doesnt ping on petrol (when i use it).I disconnected the advance and i felt like it wasnt as responsive.
I was told this setting by 2 LPG fitters in Newcastle.
run ur timing a couple of degrease above factory timing with ur vacuum advance connected, also put some new spark plugs in but get non- resisted ones and gap them down to .8 to .9mm gap and get ur gas tuned and it should run sweet and this will help stop the chances of backfiring, just remember that u gas doesnt like to run more than 35 degrees total advance (thats including centralfugal advance)
Ok thanks man u wouldn't know how much it would cost to get someone to tune my gas for me around about and anyone on the sunshinecoast might now of someone that does a good job maybe?
I'm going to look into getting a petronix ignition anyone found any improvements from points to the petronix they claim to make a bit more power jee i hope so
