Hello everyone. I recently swap a sr20det engine in my s13. The swap was made by a mechanic who never worked on a sr20det before. He worked only on ca18.He said the timing is ok, he didnt check with a timing light, but for me, it wasnt confident. Anyway, after the swap the engine had some noises, and after 5 min he snapped the rocker arm from the exhaust cam on #1 cylinder. After this, all the work was done by a second person, which is the one who gave me the engine. All good. I start the car, and was running very weird. In the low rpm, was pretty ok, but after 3k the engine wont pass. I started checking myself all the things. I checked the tps, the cas, the iacv, etc...and i think my timing was not installed corectly. I took the valve cover off, and made some pictures. I count 19 dots between the cams, and the lob from the intake cam is not horizontally. Something is wrong. Please, tell me what you think? I checked the tdc with a long screwdriver, but i am not 100% sure that the previous owner put the tdc on the 2nd notch from the pulley and not on the first. Also, after checking the cams, i found some scarring on the exhaust cam lob from the first cylinder. How bad is this? Thank you all.