Ceramic Coatings and EGT

Mon Mar 22 03:40:07 GMT 1999

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Sorry for the off topic post, but this is a great cross section of high =
tech minded people and I don't know of a better forum.
I just got my new engine running and wanted to see if anyone else has =
had a similar experience.

The engine is a Nissan VG30ET that was enlarged to 3.3 liters and I =
ceramic coated the combustion chambers, front face of the intake valve, =
front and back of the exhaust valve and the exhaust port.  What I =
noticed is that my EGT at idle went from around 900 F to 1200 F.  The =
mixture is the same and the cam is larger than the last engine which =
would open the exhaust valve earlier, so that would bump the EGT a =
little.

My co-worker has coated a bunch of engines, but they were all carbed and =
he hadn't noticed such a dramatic change at idle.  I haven't really run =
it that hard yet as it is still being run in, so I am not sure about how =
much higher the EGT is under load yet.

If anyone else has seen such a dramatic rise, let me know off the list =
so not to tie up too much bandwidth.

Thanks,
Steve

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<DIV><FONT color=3D#000000 size=3D2>Sorry for the off topic post, but =
this is a=20
great cross section of high tech minded people and I don't know of a =
better=20
forum.</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2>I just got my new engine running and =
wanted to=20
see if anyone else has had a similar experience.</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT color=3D#000000 size=3D2>The engine is a Nissan VG30ET that =
was enlarged=20
to 3.3 liters and I ceramic coated the combustion chambers, front face =
of the=20
intake valve, front and back of the exhaust valve and the exhaust =
port.&nbsp;=20
What I noticed is that my EGT at idle went from around 900 F to 1200 =
F.&nbsp;=20
The mixture is the same and the cam is larger than the last engine which =
would=20
open the exhaust valve earlier, so that would bump the EGT a=20
little.</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT color=3D#000000 size=3D2>My co-worker has coated a bunch of =
engines, but=20
they were all carbed and he hadn't noticed such a dramatic change at =
idle.&nbsp;=20
I haven't really run it that hard yet as it is still being run in, so I =
am not=20
sure about how much higher the EGT is under load yet.</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT color=3D#000000 size=3D2>If anyone else has seen such a =
dramatic rise,=20
let me know off the list so not to tie up too much =
bandwidth.</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2></FONT>&nbsp;</DIV>
<DIV><FONT color=3D#000000 size=3D2>Thanks,</FONT></DIV>
<DIV><FONT color=3D#000000 size=3D2>Steve</FONT></DIV></BODY></HTML>

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