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 Post subject: Oil pressure @ 100psi
PostPosted: Sat Jul 01, 2017 11:29 pm 
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Joined: Sat Feb 25, 2017 11:51 am
Posts: 186
Howdy,
What is typical cold start up oil pressure suppose to be on an F1. I am starting up in warm summer weather with 15/40 oil and seeing near 100psi at fast idle/2K rpm. That seems really high?


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 Post subject: Re: Oil pressure @ 100psi
PostPosted: Sun Jul 02, 2017 12:45 am 
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Joined: Fri Jun 24, 2016 2:38 am
Posts: 45
Location: New Zealand
I too have been wondering, but between the classic meetings at Spa and the IOM TT you might not get a reply for a wee while.


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 Post subject: Re: Oil pressure @ 100psi
PostPosted: Sun Jul 02, 2017 12:59 am 
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Joined: Wed Nov 17, 2010 5:45 am
Posts: 209
Hi cal, what does it drop to when hot? I keep hearing 10psi for every 1000 rpm. Though that's car people telling me this. The epicycle twin had 145psi at 3000 rpm. With a lot off playing with springs and preload I've got it to 50psi at 3000rpm cold. When it's hot it's 25psi at 3000rpm. That's with 15w-40 oil. That's my take on it. Boucher.


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 Post subject: Re: Oil pressure @ 100psi
PostPosted: Sun Jul 02, 2017 9:40 am 
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Joined: Sat Feb 25, 2017 11:51 am
Posts: 186
boucher wrote:
Hi cal, what does it drop to when hot? I keep hearing 10psi for every 1000 rpm. Though that's car people telling me this. The epicycle twin had 145psi at 3000 rpm. With a lot off playing with springs and preload I've got it to 50psi at 3000rpm cold. When it's hot it's 25psi at 3000rpm. That's with 15w-40 oil. That's my take on it. Boucher.


Thanx.....I dont know what it drops to when fully hot and at operational speed/rpm yet. I am just getting it running and I have not been able to get any real shake down runs in yet where it is fully hot. Had it running in the garage a few times and gone down the street once just far enough to check the gear box and clutch for operation.


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 Post subject: Re: Oil pressure @ 100psi
PostPosted: Tue Jul 04, 2017 11:31 am 
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Joined: Thu Oct 14, 2010 7:30 am
Posts: 140
100psi. at cold start isn't unusual. It will drop as the engine warms and will run about 35-40 when hot, 60-70 at high revs. All of the engines I've seen in good condition run about the same pressures from an 85 F1 to aq 1100 Multistrada.


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