Hello everyone.
I got the update of this situation, if anyone is interested that is. I need to vent and I need advice.
I went to the mechanic yesterday and told him to check my guide chain, tensioner, timing chain because something is rattling.
He told me that the rattling at high revs is due to my extractor's/header's protection heat covering (it's a big metal cover) over my extractors/headers, or whatever you call it, is vibrating due to a broken bolt on the top RH corner making it rattle.
He then demonstrated this by revving the shit of my car to hear the sound, and then pressed a hammer on the cover and said to me "See? No sound". So I thought okay cool I'll bring it in to him tomorrow morning and I can pick it up later and drive home with peace of mind and no fucking sound.
Anyway, I picked up the car an hour ago today, and my extractor heat cover thing was gone and he told me after giving my car a test run there is no more rattling sound. So I test drove it and the sound was still there. I was pretty pissed off and told him it's still there and he says "it's an old car and it's normal". So I'm like okay should I knock him out now or later? hahahaha jokes.
But continuing seriously, I'm like how come you said it was that metal shit and it isn't? Rah rah rah time passes by and then he checks my car's timing with that flashing light shit. He then adjusts it and tells me to give it a run. So I'm driving and there's no rattle but there's also no fucking speed. I can see my rev's passing 4000rpm and my car is still slow. He then changes it back to normal for me and says "if you want no rattle sound you need to change the timing to make it slow, if you want speed then you have to hear the rattle".
So I choose the speed option, and he tells me he had to change my valve cover guide and bolts and labour and etc and bam $150 charge. What a rip.
So it seems that some/most mechanics are pretty shifty people, but more importantly wtf is this rattling I hear at high revs??? I don't hear it or have it at idle, only at high revs. And why would changing the timing make it go away? Is it true, slow no sound or high with sound? I don't wanna sacrifice power from a NA engine, that's just crazy.
Sorry for the long post. I definitely have more trust in the knowledge of members of antrx than mechanics. Thanks for reading.