04EBevo

iTrader: (11)

Okay so about a month ago I installed cosworth m2 cams and new springs. In the process of pressurizing the cylinder in order to change the valve springs I forgot to put the car in 1st gear and it turned the motor over. So long story short we are taking all the covers off of the timing belt to put the engine back in time and in order to get to a certain bolt on a pulley we decided to lower the motor a little on that side. We got it all in time and back together and now i have this mean rattle at 3500 rpm and up that gets even worse when I let off the throttle at this higher rpm. I had a helix downpipe on the car that appeared to be rubbing the subframe and oil pan so i changed it out with another used one from a friend that was cheap and I could bang into shape to determine if this in fact is the culprit of my rattle. Well it is still there and its getting annoying. The only other thing that I think could be it could be that my gtspec exhaust manifold got bent in the process... Before anyone asks I have had the car up on a lift and had someone rev it with me under to listen and it is definitely exhaust rattle. I am just looking for some input as it is kind of hard to retune with the knock sensor going insane when it hears the noise. Thanks in advance.

barneyb

Balance shaft out of time?

Fast_Freddie

iTrader: (50)

No it is a distinct metal on metal contact somewhere...

4G63kevin

iTrader: (16)

Maybe it's your downpipe. Might want to check it again. I've had a metal-metal rattle after I installed my dp too. Was a ***** and annoying as hell. I took it out and gave it hell with a BFH. Now it doesn't rattle. Clears perfectly. lol

javicracer

iTrader: (82)

balance shafts out of time!

ob5

^ +1

04EBevo

iTrader: (11)

It is metal to metal. But the engine vibrates significantly more than it did before, but it still will rev to redline. Would the balance shaft belt being a tooth off cause it to vibrate just enough to cause stuff to rattle that didn't before?

gsrboi80

iTrader: (38)

Its not the balance shaft off a tooth. What they are saying is that the oil pump is 180 out from the balance shaft. All your marks can be 100% lined up and still be 180 out

Easy to check through the inspection hole on from of block. If it is out the timing belt needs to come off and oil pump sprocket needs to be turned 360 so that it is now in phase.

Search it out

04EBevo

iTrader: (11)

alright cool im checking it tomorrow then. thank you.

04EBevo

iTrader: (11)

thanks for all the help guys, it is fixed now it was the bs being 180 degrees out.