Tapping Sound from Passenger Side Head?
It started about a week after the turbos were installed and the car was tuned. I took it to a dyno day event that week and noticed it getting really low and took it home immediately. I have driven it around the neighborhood a few times since then trying to diagnose the problem and it started making that tapping sound a few weeks ago and seems to have gotten progressively worse. I kept thinking it was just the turbos taking too much oil from the engine and not getting it returned fast enough, but now I think its something with the motor itself. I have quit starting it up altogether but am not sure if any serious damage has been done.
This is soooo frustrating! I don't want to have pull the whole damn motor and break it all down just to find out what is causing this pressure to drop. I just read somewhere that some of the original owners manuals say that it is normal for the OP to drop below 5 psi on a hot day and not to worry as long as the pressure goes up with rpm.
I don't know how much truth there is to that, but mine always goes up with rpm. If it was a bad bearing or bad pump would it still go up significantly with rpm? Which ports exactly do I need to run the mechanical gauge into?
You need an oil pressure gauge with hose & the same size threads that are on the oil pressure sensor. Remove the sensor & install the gauge in place of the sensor.
I'm having a hard time finding a cheap mechanical gauge for this and I dont know what fitting size I need either. Any suggestions?
Also, I had a D-1SC on the car for a minute before going to the turbo. When the guy who installed the turbo was trying to put the stock crank pulley back on, he said it wouldn't fit because it was hitting the double roller timing chain cover???? It had fit on with no problem before so I don't know what that was all about. He had it machined down to clear and then ran an all-thread and a nut to hold it on. He assured me that he had built several motors with over 800 hp and ran the crank like that before in some of them with zero issues. I came across a thread today where a guy was having my exact same issue after installing a new crank pulley. Can an improperly installed crank pulley have an effect on the oil pump or somehow cause oil pressure problems in the crank?
Also, I had a D-1SC on the car for a minute before going to the turbo. When the guy who installed the turbo was trying to put the stock crank pulley back on, he said it wouldn't fit because it was hitting the double roller timing chain cover???? It had fit on with no problem before so I don't know what that was all about. He had it machined down to clear and then ran an all-thread and a nut to hold it on. He assured me that he had built several motors with over 800 hp and ran the crank like that before in some of them with zero issues. I came across a thread today where a guy was having my exact same issue after installing a new crank pulley. Can an improperly installed crank pulley have an effect on the oil pump or somehow cause oil pressure problems in the crank?
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From: Euless Tx
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Did you install a different cam with the turbo? There was no mention of it. Pushrods don't usually bend unless there is some kind of piston to valve contact. What boost level are you running? Stock pistons?
My fresh build broke on the dyno making a very similar noise....it was a broken ring land on #7.
My fresh build broke on the dyno making a very similar noise....it was a broken ring land on #7.
Cam and pistons were put in long before turbo install. If you read my sig, you will see that obviously they arent stock internals with a FORGED 347. I had bad plugs so could misfire at high rpm also cause this?
