Got started on the 93 today and it's stripped down to just the valve covers and head for tomorrow morning. Boy that HG DVD comes in handy (shameless plug).
Have two interesting items to report. First, one of the intake manifold studs that holds the halves together was installed too deep at the factory. As a result, the guy who subsequently installed the nuts on the studs stripped the stud/nut as it ran out of threads at 2. I'll replace it.
Second, I broke the entire cast iron EGR valve body in half. Was half listening to my brother in law and using a persuader pipe on that big union nut. Lesson learned - pay attention to what you're doing!
Other than that it is coming along fine. Using PB Blaster on the exhaust manifold bolts for two days helps incredibly. Should have gotten some on the EGR union, too.
So far all the use of synthetics since new, mid/premium fuel, Toyota filters, replacing the PCV valve and basically over the top maintenance seems to have mattered not. The intake and throttle body are filthy just like the used 97 was and the distributor came out with identical oil deposits on it as well. I'm interested in seeing the inside of the valve cover tomorrow, as well as the valve/cylinder environment. So far it honestly looks like all that horsing around is worthless. I'm too anal to change, but wanted to call it like it is for you guys - I would never have expected this.
Also, one of my head sensors has clearly been puking coolant for a very very long time. It must have been coming out SO slowly that it simply evaporated in a ring and never dripped. So, I never saw it as it's hidden up there quite well. There's a frothy, rubbery bright pink ring around it that looks very wierd and actually feels rubbery. The evaporated essence of Toyota Red.
DougM
Have two interesting items to report. First, one of the intake manifold studs that holds the halves together was installed too deep at the factory. As a result, the guy who subsequently installed the nuts on the studs stripped the stud/nut as it ran out of threads at 2. I'll replace it.
Second, I broke the entire cast iron EGR valve body in half. Was half listening to my brother in law and using a persuader pipe on that big union nut. Lesson learned - pay attention to what you're doing!
Other than that it is coming along fine. Using PB Blaster on the exhaust manifold bolts for two days helps incredibly. Should have gotten some on the EGR union, too.
So far all the use of synthetics since new, mid/premium fuel, Toyota filters, replacing the PCV valve and basically over the top maintenance seems to have mattered not. The intake and throttle body are filthy just like the used 97 was and the distributor came out with identical oil deposits on it as well. I'm interested in seeing the inside of the valve cover tomorrow, as well as the valve/cylinder environment. So far it honestly looks like all that horsing around is worthless. I'm too anal to change, but wanted to call it like it is for you guys - I would never have expected this.
Also, one of my head sensors has clearly been puking coolant for a very very long time. It must have been coming out SO slowly that it simply evaporated in a ring and never dripped. So, I never saw it as it's hidden up there quite well. There's a frothy, rubbery bright pink ring around it that looks very wierd and actually feels rubbery. The evaporated essence of Toyota Red.
DougM