The previous owner of my car has apparently advanced the timing...
Besides a slight power increase what other potential benefits are there to doing this, and what are the downsides?
He was also supposedly running 98 whereas I am back to 91.
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The previous owner of my car has apparently advanced the timing...
Besides a slight power increase what other potential benefits are there to doing this, and what are the downsides?
He was also supposedly running 98 whereas I am back to 91.
Throttle response, increased power, improved fuel economy is also possible.
Factory timing is 15deg BTDC, usually advanced safely to 18deg with higher RON fuels. This is especially important in summer, winter not so much.
Throttle response and power increases are not even a concern for me; I'm happy with stock.
However, which would yield better fuel economy/be cheaper to run, stock timing + 91 RON or advanced timing + 98 RON.
Every now and again I find (even when I was using 98) that the car sort of "idle hunts" and once when I came to a sudden stop before reversing, it stalled.
Could this be a side effect of having advanced the timing?
Generally higher RON fuel + advanced timing will give you better economy. I can't say on a scientific level what is better for overall cost and efficiency but when E10 is 99c, i'm going 98 ron everytime. When E10 is 124c, i'll put 95ron in. I won't ever use 91/E10.
the idle issue is related directly to the idle valve and is very common. Cleaning and proper adjustment usually fixes the issue, its just in an pain in the ass place to get to so often some fine tuning/adjustment can help the issue, or at lest stop the stalling.
run premium, take all the **** out of your car, pump the tyres up, make sure the plugs,air filter and fuel filter are all in good nick, and be happy.
Hmm... back to 98 it is then.
Could you please link me to a thread/guide/youtube on this issue?Quote:
the idle issue is related directly to the idle valve and is very common. Cleaning and proper adjustment usually fixes the issue, its just in an pain in the ass place to get to so often some fine tuning/adjustment can help the issue, or at lest stop the stalling.
Standard plugs are fine. BKR6EIX-11.
N14's were commended a hotter plug for reasons i have no idea about.
Maybe for the early SR20 'high port' N14's… Like the Red Jett's…
Well Hitmanuncut, that's why the Red Jett's SR20 is given new oil every 3,000 klicks…
Never had any issues using the '5' heat range…
Maybe it likes the Crane LX-91 coil?
http://pulsar.org.au/forums/showthre...ane-LX-91-coil
How's the bushes going?
Bushes are great thanks Phil, I hope Cozzmo has a win with turning some up on the lathe. Took one into pedders to see if they manufacture anything similar but that was a no go too. There isn't any reason you would have a drama using a '5' plug as it is only one step down from the OEM spec plugs heat range. Cheers for the book also, though I'm not sure when I'll get the chance to have a read of it, too busy studying at the moment.
I remember now…
As I only do very short runs, max 30 mins, once a week, the '5' is why…