BMFC, Tiiming, and Coatings

[Steve]

When you test the same engine combination over and over you find that the
oil temp is within a few degrees for that given combination.  If it is
different and the combination is the same then something is wrong or there
was a change.  I find this very easy to believe as I have witnessed hundreds
of dyno runs over the years.

My turbo V6 I just built with coatings takes twice as long to warm up now
that it is coated.  Also I have seen a 200 degree F increase in EGT at low
speed.  I haven't done full load testing yet so I can't report on that yet.

Steve
-----Original Message-----
From: Programmer <nwester at eidnet.org>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Saturday, May 15, 1999 8:24 PM
Subject: Re: BMFC, Tiiming, and Coatings


>Greg,
>
>The only problem with testing like that is the motor had to be torn down to
>perform the experiment. I'd put little faith in a 15 degree change when a
>complete teardown would have had to be done to perform the work.
>
>Lyndon IP TECH
>-----Original Message-----
>From: Greg Hermann <bearbvd at sni.net>
>To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
>Date: Saturday, May 15, 1999 8:11 AM
>Subject: Re: BMFC, Tiiming, and Coatings
>
>
>>>Has anyone run any "independent" testing on these barrier coatings for
>what
>>>they actually have seen as an improvement pre+post coating?.
>>>  Has any one run any endurance tests?.
>>>Do I need mention that this might need a complete recal to get right.
>>>Bruce
>>
>>A fellow I spoke with at HPC told me that they ran a dyno test of a fairly
>>typical hipo 350 CID Chebby first with no coatings, then with coating only
>>on the piston crowns. Said that--with no other changes, the steady state
>>oil temperature at sustained full load dropped 15 degrees F.
>>
>>Greg
>>
>>
>>
>
>