timing without a light

J

'JustDreamin'

Dream: 6LV8 Turbo Bravada
Sorry, must have missed that you made one.

Trick can mean custom. Doesn't mean that it rules out nice looking black anodized or polished alum pieces. And I've seen some things that the owner should have just shelled out the money, because their homemade stuff looked every bit of it.

And I'm not sure if I'd be following the aircraft industries practices too closely. There hasn't been much development in the piston driven aircraft engine arena for quite a while. There are some new ones, but most of their engines are circa 1950. And most small private plane airframes for that matter are 30 years old or older. And the FAA is pretty set in its way about what is the "right" way to do things, and the testing procedures to certify new stuff makes CARB look like a walk in the park.


Anyway, I was hoping to make a useful suggestion. Sorry my suggestion was not in time to be useful.

'Dreamin'
 
#2875

#2875

built, not bought
it was useful, i just wish the previous owner had installed a pointer so i didn't have to. you are right about the faa but most planes now are fuel injected and the onboard diagnostics make obd1 info on a laptop look like... well obd1 on a laptop. for example the new cessnas have an exhaust gas temperature sensor on each cylinder so you can tune the fuel ratio on each cylinder individually. remember the small block chevy which is the same damn engine in the sy IMO came out in 1955; there ain't been too much advance in the automotive piston engine either.
 
J

'JustDreamin'

Dream: 6LV8 Turbo Bravada
My point was civil aviation seemed to be stuck in a time warp. I know several pilots who own their own planes, and nobody I know can afford a new one. And for a while, there just weren't new planes to buy.

EGT probes are cool, but I wonder how useful. I expect they're not that useful, which is why the entire automotive world used O2 sensors. OEM's are sometimes dumb, but ultimately they're cheap. Why spend all that R & D money to develop O2 sensors if EGT probes were just as good and commercially available? I don't know the real answer there, just playing devils' advocate. For aircraft, my speculation is that it was easier to stick with EGT's than to try to get the FAA to sign off on O2 sensors. I don't know if you can still get leaded av gas, but that would do a set of O2 sensors in too, which might be another reason not to use them.

The basic small block was designed in 1955. The basics of it hasn't changed a whole lot. However alot of the systems that go with it (EFI specifically) have made radical improvements in the 49 years since it was first introduced. I just think that the FAA has made certificated aircraft mark time and not move forward with everybody else. I'm sure some of it is the FAA's safety focus.

'Dreamin'
 
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