senoroms Posted July 2, 2004 Report Share Posted July 2, 2004 do these two both achieve the same job? im confused as to what the difference is between the two. can anyone clarify this for me please Quote Link to comment Share on other sites More sharing options...
kenr74 Posted July 2, 2004 Report Share Posted July 2, 2004 Do them both. The flywheel just allows it to rev faster. Advancing the timing increases HP slightly. I did the flywheel, timing, and shaved head at the same time. Felt like I bought a new bike. Quote Link to comment Share on other sites More sharing options...
senoroms Posted July 3, 2004 Author Report Share Posted July 3, 2004 i just sent my head to boonman and thats gonna be coming back some time soon, and he convinced me to do the fly wheel as well but i really dont know what advancing the timing does or even what that is? can anyone help me out Quote Link to comment Share on other sites More sharing options...
nater006 Posted July 3, 2004 Report Share Posted July 3, 2004 Advancing the timing causes the spark to occur earlier in the ignition cycle. Advancing the timing is a good way to get some extra HP. The fuel in the engine doesn't explode -- it is a controlled burn. The further you advance it, the more power you get, but also the closer you come to a condition called detonation (pinging), which is an explosion of the fuel and is very bad for any engine. A guy in the S10 forums posted a pic of bent rods from pinging. But, the stock timing is relatively conservative to prevent someone from pinging their engine to death if they run crap fuel. If you run higher octanes, you can advance it even further. Octane is basically the fuel's resistance to exploding (which is bad). The higher th better. Make sure you're running good (92/93+) octane fuel and you can safely advance it 4 degrees, most likely more. Quote Link to comment Share on other sites More sharing options...
senoroms Posted July 4, 2004 Author Report Share Posted July 4, 2004 is this something i can do myself or take it to a shop to have it done and if so how much does it run and how exactly do they do it? Quote Link to comment Share on other sites More sharing options...
white trash Posted July 4, 2004 Report Share Posted July 4, 2004 im interested in this too. I want a +4 key, shaved head, and a mild / dune port. Is this safe to do on a stock crank and rod? I know alot of guys have them trued and welded to withstand the extra HP or whatnot. But id rather not split my cases. AS for the trueing... if i have to do it should i send it somewhere or could i take it to a local hot rod shop. Would they know what, where to weld it? SOrry not trying to steal your thread just dont want to start another topic abou tthe same stuff Quote Link to comment Share on other sites More sharing options...
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