Thanks for that but a lot of that is not allowed, only original parts, no lightening of flywheel, I can skim the head a little but are the gains worth the cost? beside's removing the limiter, what settings before TDC is best, anything else?1.3 cams. Lightened flywheel, check and adjust the timing, port the head, skim the head, bigger throttlebody (ga15 is a direct fit, ga16 will fit if you mod it but you 'll loose the idle circuit)
Thank you, very much appreciated.Set the timing to 17 degrees. It almost in the middle of the mark before the last and the last one.
every bit helps so a skimmed head will give a few hp. And if you remove the head you might as well fit a new chain and check the valve clearance.
a ga15 throttlebody pops up on eBay every ones in a while.
other mods include fitting electric water pump and remove powersteering pump. The rally air intake is also a nice upgrade but I’m not sure if that’s allowed or not.
This would be nice but I'd like to stay within the rules...If they don't check the stroke put 1.3 crank and rods in
Just don't make it too obvious you have a few more ponies lol
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Skimming the head is ok within the limit but hadn't heard of running LPG, is this acceptable?Maximum advisable skim off the head? I'll be running LPG so the higher the compression the better. LPG has an octane rating above 110 and 12:1 CR is do-able.
Apologies, my fault for piggy backing on your thread. I'm not preparing a car for competition my Micra is just a personal project. The reason for the LPG is that is what I do, we sell very large quantities of propane and consequently I get free gas. Imagine never paying for fuel againSkimming the head is ok within the limit but hadn't heard of running LPG, is this acceptable?