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The Terminator
Engine/Tuning
Janderson Heads killed it on my new heads
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<blockquote data-quote="badcobra" data-source="post: 16922521" data-attributes="member: 20798"><p>I did a Modular Performance big bore about 15-16 years ago. It cracked a sleeve before it came off the dyno so that experiment failed and now I keep things as simple as possible with a stockish sized bore. As for valve sizes, +1mm does not make that huge of a difference. Here is the thing though, with the power I am making I am not running stock valves. If I am replacing valves, I might as well go larger because the price is the same. Also, you need to replace all the exhaust seats for sure so at that point go larger valves. Bottom line, with as much boost as I am pushing, 'shrouding' of the valves is not of any concern to me anyway. When you are doing a maximum effort build, all the little things matter. In this case, trying to get as much air moving as fast as possible is what we're looking to do. I would spend money on cylinder heads over a big bore 10 out of 10 times.</p></blockquote><p></p>
[QUOTE="badcobra, post: 16922521, member: 20798"] I did a Modular Performance big bore about 15-16 years ago. It cracked a sleeve before it came off the dyno so that experiment failed and now I keep things as simple as possible with a stockish sized bore. As for valve sizes, +1mm does not make that huge of a difference. Here is the thing though, with the power I am making I am not running stock valves. If I am replacing valves, I might as well go larger because the price is the same. Also, you need to replace all the exhaust seats for sure so at that point go larger valves. Bottom line, with as much boost as I am pushing, 'shrouding' of the valves is not of any concern to me anyway. When you are doing a maximum effort build, all the little things matter. In this case, trying to get as much air moving as fast as possible is what we're looking to do. I would spend money on cylinder heads over a big bore 10 out of 10 times. [/QUOTE]
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Janderson Heads killed it on my new heads
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