BMFC, Tiiming, and Coatings

[Programmer]

Guess if identical loads and clearances exist it'll always pan out the same.
Definitely more consistent with EFI controls in place

-----Original Message-----
From: Steve <maxboost at earthlink.net>
To: diy_efi at efi332.eng.ohio-state.edu <diy_efi at efi332.eng.ohio-state.edu>
Date: Monday, May 17, 1999 12:35 AM
Subject: Re: BMFC, Tiiming, and Coatings


>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
>>>
>>>
>>>
>>
>>
>
>