Pinto Boy Posted July 15, 2007 Share Posted July 15, 2007 What do these engine tuning terms mean and what is the advantage of them? Larger choke carbs Carb Jetting Higher / longer lift camshaft Bigger valves Flowed head Ported head Polished head Stage 1, 2, & 3 heads Skimming head Forged pistons Cylinder block boring Lightened flywheel Electric fuel pump Quote Link to comment Share on other sites More sharing options...
Pinto Boy Posted July 15, 2007 Author Share Posted July 15, 2007 I'll start with what I think I know, those please correct me if I'm wrong or too simplistic. Larger choke carbs, longer / higher camshaft and bigger valves These all allow more fuel / air mixture into the cylinders giving a bigger 'bang' and more power. Flowed head Allows the fuel / air mixture to flow more easily into the cylinders by reducing turbulence in the flow, gives more fuel in cylinder so more power. Skimmed head Reduces overall cylinder volume and increased compression ratio, this gives bigger bang and more power. Quote Link to comment Share on other sites More sharing options...
Pinto Boy Posted July 15, 2007 Author Share Posted July 15, 2007 Thanks DIY Si, very thorough Now all I need to do is decide how much of this to do to mine Quote Link to comment Share on other sites More sharing options...
Tigger Posted July 15, 2007 Share Posted July 15, 2007 Quite simply, it means lots of ££££ Quote Link to comment Share on other sites More sharing options...
DIY Si Posted July 15, 2007 Share Posted July 15, 2007 Quite alright, I like engine stuff! I built the race engine in my mini, and enjoy tinkering. As said, it depends how much money you have, and what you expect from the engine. As I'm sure you're aware, there are different types/level of cams, from mild to ultra lumpy race jobs, like mine. My A series idles anywhere from 800-1500, comes on cam at 3k, and revs out at 8.5k! You'll find overbores are relativelyexpensive, whilst head and cam work will yield much better £/bhp. Also, a rolling road setup will always pay huge dividends. My basic set up was ok, but after the RR session it went like a huge green rocket! Oh, different engines will respond better to different things. The A series likes high lift, but short duration cams. Others prefer the opposite, low(er) lift and long(er) duration. Oh, superchargers are always worth a look too! Quote Link to comment Share on other sites More sharing options...
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