entropy
Moderator
Posts: 8671
|
posted September 03, 2009 02:50 AM
aftermarket oil pressure sensor is fragile???
hmmmmmmmm....
My 6mo old aftermarket oil pressure sensor quit at Loring; thought it was wiring.
nope, good pwr & gnd but no output, so it looks like it's junk.
It is mounted on a T off the L side of the oil galley, OEM sensor on the other side.
Anyone have experience with "fragile" pressure sensors, or did i just have bad luck????
____________
This moderator uses moderation in moderation
  
|
Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
|
posted September 03, 2009 04:27 AM
 Edited By: Y2KZX12R on 3 Sep 2009 12:29
Karl, with the tee in there it may have created a harmonic problem. If the assembly on the of that setup has a resonant frequency that is at the engines resonant frequency at a particular rpm. If so then it may vibrate the sensor to death when the engine is at that frequency.
If you have a reed tachometer you can place it on the sensor on the dyno and see if it goes ballistic at any point in the run.
My guess is that you need to modify the way the fittings are to change the resonant frequency of the assembly. Maybe go to larger size fittings or solidly brace the setup you have. Typically you want to keep stuff like that short and fat.
Is there a place in your data logs where you got spikes or erroneous data? That would be the resonant frequency of the assembly.
____________
Y2KZX12R
CompetitionCNC.com
|
Y2KZX12R
Needs a job
CompetitionCNC.com
Posts: 3762
|
posted September 03, 2009 04:32 AM
Oh, its a good idea to keep the damper on the fuel rail short and out of the same type scenario.
At Loring I meant to mention something about that but so much was going on.
____________
Y2KZX12R
CompetitionCNC.com
|
entropy
Moderator
Posts: 8671
|
posted September 03, 2009 04:41 AM
quote:
Is there a place in your data logs where you got spikes or erroneous data? That would be the resonant frequency of the assembly.
nope, the oil pressure log looked fine, then just quit.
____________
This moderator uses moderation in moderation
|
entropy
Moderator
Posts: 8671
|
posted September 03, 2009 04:48 AM
quote:
Oh, its a good idea to keep the damper on the fuel rail short and out of the same type scenario.
At Loring I meant to mention something about that but so much was going on.
There is not really a good alternative to where I have mounted the damper.
If i hang it directly on the end of the rail it is in direct contact with my knee. 
____________
This moderator uses moderation in moderation
|
tcchin
Zone Head
Posts: 867
|
posted September 03, 2009 09:40 AM
Your knee ought to keep it well-damped.
|
|
|
HOME
NEW TOPIC