john8662
05-16-2006, 21:22
I've had a pretty good project working on rebuilding my own engine with the '86.
Originally rebuilt the engine due to "ticking" and throwing two sets of lifters at it, because when the covers were removed, several wouldn't keep their prime.
During tear down I discovered two bad cam bearings... So, that's what was causing it, low oil psi where it matters for lifters right?
Well the new engine is built, got almost 500 miles on it with a Banks turbo now (you don't wanna know about the turbo troubles I've been fighting)!
Anyways, I've got this tick see, and I started thinking, it's an exhaust leak, because I've had a few thanks to the local exhaust shop making my custom exhaust system. Got all the leaks fixed, I've even had the manifolds off again, to install gaskets (I never use exhaust gaskets, no need for em) just in case. The sound is like either an exhaust hiss or valve train noise. I can't decifer!
Here is the catch, only really heard in the cab (or head hanging out the window) when you're accelerating, approximatly 1,500 RPM up. I really don't hear it (but, do hear other tickings) at idle. Gonna make some recordings soon, for a listen.
Here is what was done to the engine, maybe I missed something...
As far as the valve train service I replaced all the rockers/shafts and added new lifters. The heads had a complete valve job and a shaving to correct untrue surface. New guides in the head, and springs were checked for correct pressure. The original pushrods were re-used and glass-plated to see how straight they were. They were not measured for length (couldn't come up with a way to do that).
I'll admit it, if there was a good place to drive something off of, I would have considered it...
What things have you done to resolve ticking noises?!?!
I can't figure it out, and it's bugging me to death! Anything you can throw out there will be considered! Well except for Chupacabra's underneath!
J
Originally rebuilt the engine due to "ticking" and throwing two sets of lifters at it, because when the covers were removed, several wouldn't keep their prime.
During tear down I discovered two bad cam bearings... So, that's what was causing it, low oil psi where it matters for lifters right?
Well the new engine is built, got almost 500 miles on it with a Banks turbo now (you don't wanna know about the turbo troubles I've been fighting)!
Anyways, I've got this tick see, and I started thinking, it's an exhaust leak, because I've had a few thanks to the local exhaust shop making my custom exhaust system. Got all the leaks fixed, I've even had the manifolds off again, to install gaskets (I never use exhaust gaskets, no need for em) just in case. The sound is like either an exhaust hiss or valve train noise. I can't decifer!
Here is the catch, only really heard in the cab (or head hanging out the window) when you're accelerating, approximatly 1,500 RPM up. I really don't hear it (but, do hear other tickings) at idle. Gonna make some recordings soon, for a listen.
Here is what was done to the engine, maybe I missed something...
As far as the valve train service I replaced all the rockers/shafts and added new lifters. The heads had a complete valve job and a shaving to correct untrue surface. New guides in the head, and springs were checked for correct pressure. The original pushrods were re-used and glass-plated to see how straight they were. They were not measured for length (couldn't come up with a way to do that).
I'll admit it, if there was a good place to drive something off of, I would have considered it...
What things have you done to resolve ticking noises?!?!
I can't figure it out, and it's bugging me to death! Anything you can throw out there will be considered! Well except for Chupacabra's underneath!
J