[Fot] Gt6 oil pressure?

[Brian Dennis]

So, just to follow up. Thanks for those that replied. 
As for the fluctuation, Kas mentioned possible debris in the pressure relief valve. I cleaned it out although I did not find any debris. 
I also replaced the spring with a stock spring. I had been running a HD spring. 
Result, steady pressure.
Still had excessive pressure. Played with various copper washers with different thicknesses. Was able to get 45psi at hot idle 1500rpm and 95psi at hot 6000 rpm.  
Off to the races we go. New motor was good for first in class up Mt. Philo VT.
Thanks again.Brian

 
      From: John Styduhar <johnstydo at gmail.com>
 To: Duncan Charlton <duncan.charlton54 at gmail.com> 
Cc: Brian <britracer89 at yahoo.com>; FOT <fot at autox.team.net>
 Sent: Monday, October 10, 2016 8:47 PM
 Subject: Re: [Fot] Gt6 oil pressure?
   
Are you running an accusump and have you preloaded the pressure setting correctly?  Incorrect setup will cause the oil pressure to fluctuate.
On Thu, Oct 6, 2016 at 1:28 PM, Duncan Charlton <duncan.charlton54 at gmail.com> wrote:

Brian,
My first guess is a sticky oil pressure relief valve that loosens up once warm.  I’m not sure how you could test it, but perhaps you can swap in a different one.
Duncan CharltonElgin, Texas USA



On Oct 5, 2016, at 6:10 PM, Brian <britracer89 at yahoo.com> wrote:
New motor. 12:1 comp. At cold start up oil pressure fluctuates from 20-60psi. Once warm (approx 180 deg Fahrenheit) pressure is consistent with rpm increase. At idle hot is 60psi. Upwards of 100psi at 5000rpm. 5-7k is were it will rev during race condition. 
Now FYI - this is the first motor by the book with precise measures. Previously it's been "well this is what I can afford" . Getting older and get tired working the wheel so thought I'd try something a little different. 
My concern is the cold oil psi fluctuation and the higher than previous high rev psi.

Thoughts please. Before I tow it to northern VT for hill climb next week.
Thanks, 
Brian 
Foster, RI
______________________________ _________________
fot at autox.team.net

http://www.fot-racing.com

Donate: http://www.team.net/donate. html
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
Unsubscribe/Manage: http://autox.team.net/mailman/ options/fot/duncan.charlton54@ gmail.com





______________________________ _________________
fot at autox.team.net

http://www.fot-racing.com

Donate: http://www.team.net/donate. html
Archive: http://www.team.net/archive
Forums: http://www.team.net/forums
Unsubscribe/Manage: http://autox.team.net/mailman/ options/fot/johnstydo at gmail. com







   
 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://autox.team.net/pipermail/fot/attachments/20161019/f90d78a8/attachment-0001.htm>