okay im lost now..so my motor seized and i replaced it with a fully rebuilt 91 motor. mine is an 89 so i figured it wouldnt make much of a difference. the motor does have a gasket matched intake and ported stock headers just like my old motor, the only changes i made were a front mount intercooler and an 85mm throttle body. I did set the camshaft position sensor at 26 degrees ATDC and checked it who knows how many times. it seems to run fine and hold vacuum (around 19 inhg at idle) so i doubt its a vacuum leak.
So heres whats happening, at idle or all throughout the rpm range it makes this popping noise inside an elbow on the intake pipe that connects to the intake manifold, now i was having an issue where the piping elbows were being sucked into themselves at idle when the car was in vacuum but as soon as i t enters boost the elbows open up..what i want to know is what is causing this popping sound as this has me baffled, here are my mods now:
255 lph fuel pump
Scorpion 1.73 roller rockers with .060" longer pushrods on the stock cam
85mm throttle body
front mount intercooler
ported intake
ported headers
new awsf 34 motorcraft plugs gapped to .050
any help is appreciated i really miss driving this car its been too long
Thanks, Zach
So heres whats happening, at idle or all throughout the rpm range it makes this popping noise inside an elbow on the intake pipe that connects to the intake manifold, now i was having an issue where the piping elbows were being sucked into themselves at idle when the car was in vacuum but as soon as i t enters boost the elbows open up..what i want to know is what is causing this popping sound as this has me baffled, here are my mods now:
255 lph fuel pump
Scorpion 1.73 roller rockers with .060" longer pushrods on the stock cam
85mm throttle body
front mount intercooler
ported intake
ported headers
new awsf 34 motorcraft plugs gapped to .050
any help is appreciated i really miss driving this car its been too long
Thanks, Zach