Built ls3 with mods, low torque numbers
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Teching In
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Ignition timing is ignition timing.
Cam timing is cam timing.
When we say ignition we mean when the spark fires in relation to the piston location.
When we say cam timing we mean cam position in relation to the crank.
Glad you got a degree wheel coming, that will hopefully get you some answers.
I believe you that it's installed dot to dot....the wheel will tell you if it's ground correctly.
Another errant thought that I don't think has been mentioned yet. How's your PTV? Cam is pretty large. May be worth sticking a scope in a spark plug hole to look for eyebrows...
yeah, that's what I get for typing when I can barely think straight. I've seen idle spark bouncing around in the 10-14 range cause it, and that's why I said less than 15. 16.5 isn't going to blow anything up, agreed.
Another errant thought that I don't think has been mentioned yet. How's your PTV? Cam is pretty large. May be worth sticking a scope in a spark plug hole to look for eyebrows...
Another errant thought that I don't think has been mentioned yet. How's your PTV? Cam is pretty large. May be worth sticking a scope in a spark plug hole to look for eyebrows...
This crossed my mind, too, but then I thought that a domed piston would have valve reliefs, but who knows. If he does cut the heads and use a thinner gasket for more compression, things may get really close depending on the piston. On a related note, is it odd that a domed piston is only yielding 10.5:1 compression? What cc are the chambers?
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This crossed my mind, too, but then I thought that a domed piston would have valve reliefs, but who knows. If he does cut the heads and use a thinner gasket for more compression, things may get really close depending on the piston. On a related note, is it odd that a domed piston is only yielding 10.5:1 compression? What cc are the chambers?
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Updates: I logged into Link ecu this evening, to get fuel and ignition maps, but unfortunately tuner locked them with password. Now the good thing: we swapped LS3 factory intake today, engine idle became much stable and calm even on 113LSA cam, engine won't detonate and tend to jump from the engine bay like it was before, there was noticeable gain in low end torque, so noticeable that rear CV joint was immediately broken after flooring down accelerator pedal within 4000rmp on 3rd gear while rolling with 10mph speed. header won't glow on idle or cruising speeds. today we ended up with broken CV joint, so we could test car better, but there is a huge difference. next deal is to check cam with degree wheel. I've got my cam card today, and it says that the crank should be at 30 degree BTDC on 0.006 inch lift, we'll see...
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Verdad Gallardo I considered that, but it also says it was an ebay knock off intake. Who knows what kind of issues it could have had being a knock off intake
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yes I swapped intakes, that's all for now, but I'm not sure about glowing headers gone away, because as I mentioned above we immediately broke CV joint, all I want to say that there was noticeable gain in low end torque, and engine idle was much better. but earlier with old intake manifold, we checked for vacuum leaks and there where none, so my problems were not vacuum leak related.
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Thread Starter
Teching In
Joined: Jul 2018
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I did not dynoed it yet, yes it feels much better, but I'm not sure about numbers, I'm also not sure about glowing headers issue, because we drive the car just for 10 minutes or so. I can't say that all my problems solved, I wish i could, but not yet