Frankieflowers
Member +
Hi Jay. I was reading this thread because I am witnessing a loss of power between 3000 and 4000 RPM. I had to take the cylinder head off and send it to get welded because of a crack on the fourth cylinder exit. We basically took the parts off and put new gaskets and bolts on the engine. We didn’t modify anything concerning the turbo or the front mount intercooler system. When we started the engine after the fix we heard the tweaking high pitch weird noise coming from the turbo area. My partner said that it could be oil missing in the turbo pipes that could make the turbo bearing run dry. I don’t think it could damage it at low temperature on idle. So I thought it could be the new balls and gaskets that needed to adapt on the downpipe for example? What else could it be? The turbo was fine before we took the head off. We change the timing to 10 but put it back to 0. Nothing really changed besides having more power on the top. The turbo isn’t working as it should. There is an air blow noise but all the pipes and silicon hoses are apparently tight what could it be? Consider that my partner took the metal clip off the EFI pipe because it was too hard to put back and put a metal clamp instead. Just to be sure I went underneath the car to check it if it was loose. I don’t think it could be a problem because it’s where the air gets sucked in the turbo. The pressure gouge gives a constant pressure and as I had and tightened hoses before I could definitely see the boost under its nominal level. This time the boost is right where it should be but the acceleration power isn’t right. Siri be the knock sensor thing you were talking about? Too much air in the fuel mix? What could have been changed so drastically from before and after we took the cylinder head off? The set up is the same and we just put everything back together. I hope that you can help. Thank youSometimes things break at the right moment - extremely lucky dude!