pristic
XS650 Addict
Guys,
Here where I am I have access to 95RON, 98RON or 10% ETHANOL 91RON - All unleaded.
So, what have you guys found works best in our XS's ?
Someone told me to put 91RON or 95RON in instead of the 98 I have been running.
Their logic is that 98 wasnt around when the bike was made... BUT then again, LEADED was...
Do any of you put any additives in (lead replacement type stuff) or anything?
Why? Mainly to ensure its running as good as it can.
My experience with my classic cars heavily modified was that I used to be able to bump up the advance, get it running REALLY well, and was using 98RON to ensure no pre-det... however that was using mapped ECU for the advance. I am moving to the PAMCO + E-Advance setup and believe that it will help... however in my past I had access to an engine dyno and could play with pipes, fuel, timing, everything for hours on end for free and could tune to my hearts content... with the bike I dont have that ability so starting with fuel and going from there.
Any one had an experience in tuning every scrap out of these? OBVIOUSLY doing the basics are first, but past that in terms of tweaks, tips, tricks... is where I am headed.
Will go down the porting route, etc later... for now its just the tune tricks, etc.
For example, I had a 1976 Leyland Mini - 1132cc turbo that I built.
It was running Ford EDIS module and MegaJolt ignition system (so a VR sensor on the harmonic balancer with a 36-1 tooth wheel... )
Now, it made 400% more power than the stock motor, ran a 13sec quarter mile on the stock tyres... with wheelspin in most gears. The diff ratio's gave me great 60' times but lost in top end due to the 4 speed box (there was a billet quaife LSD and dog box setup)
Now, that thing was great, but to my surprise when I was playing with it, adding Molybond 2.5 to the oil (BEFORE it went into motor) and shaken up, then put into motor gave me 7% more power on the dyno! that had to do with the zinc content in oils these days and the pushrod motor needing zinc for less friction.
Another one that the officials and scrutineers didnt like was in the 998cc class... we used to throw 2 stroke into the fuel... it simply helped the motor rev and keep up with the V8s a bit more down the straight... the only way it could be seen after the race was because there was black oil on the firewall that used to spit back out of the carb! haha...
Anyway, I know I cant add molybond 2.5 to my bike, but any old school things like that - tips tricks and ideas... would be awesome.
There has to be an old school XS650 racer among the crowd...
Cheers,
Peter
Here where I am I have access to 95RON, 98RON or 10% ETHANOL 91RON - All unleaded.
So, what have you guys found works best in our XS's ?
Someone told me to put 91RON or 95RON in instead of the 98 I have been running.
Their logic is that 98 wasnt around when the bike was made... BUT then again, LEADED was...
Do any of you put any additives in (lead replacement type stuff) or anything?
Why? Mainly to ensure its running as good as it can.
My experience with my classic cars heavily modified was that I used to be able to bump up the advance, get it running REALLY well, and was using 98RON to ensure no pre-det... however that was using mapped ECU for the advance. I am moving to the PAMCO + E-Advance setup and believe that it will help... however in my past I had access to an engine dyno and could play with pipes, fuel, timing, everything for hours on end for free and could tune to my hearts content... with the bike I dont have that ability so starting with fuel and going from there.
Any one had an experience in tuning every scrap out of these? OBVIOUSLY doing the basics are first, but past that in terms of tweaks, tips, tricks... is where I am headed.
Will go down the porting route, etc later... for now its just the tune tricks, etc.
For example, I had a 1976 Leyland Mini - 1132cc turbo that I built.
It was running Ford EDIS module and MegaJolt ignition system (so a VR sensor on the harmonic balancer with a 36-1 tooth wheel... )
Now, it made 400% more power than the stock motor, ran a 13sec quarter mile on the stock tyres... with wheelspin in most gears. The diff ratio's gave me great 60' times but lost in top end due to the 4 speed box (there was a billet quaife LSD and dog box setup)
Now, that thing was great, but to my surprise when I was playing with it, adding Molybond 2.5 to the oil (BEFORE it went into motor) and shaken up, then put into motor gave me 7% more power on the dyno! that had to do with the zinc content in oils these days and the pushrod motor needing zinc for less friction.
Another one that the officials and scrutineers didnt like was in the 998cc class... we used to throw 2 stroke into the fuel... it simply helped the motor rev and keep up with the V8s a bit more down the straight... the only way it could be seen after the race was because there was black oil on the firewall that used to spit back out of the carb! haha...
Anyway, I know I cant add molybond 2.5 to my bike, but any old school things like that - tips tricks and ideas... would be awesome.
There has to be an old school XS650 racer among the crowd...
Cheers,
Peter
