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 Post subject: Timing and Break In?
PostPosted: Sun Apr 02, 2006 1:02 pm 
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EFI Slant 6

Joined: Thu Nov 14, 2002 11:29 am
Posts: 499
Location: Corning, CA - middle of nowhere
Car Model:
This thing seems to be running well.
I started it and ran it till it warmed up this AM and then set the valves again.
18 in 20 out
I also checked the timing with everything hooked up (didn't plug the vacuum) and it is running about 30 after.
I run it until it warms up and I try to set it up at a high idle - I then let it run for 15 minutes or so and then shut it off for awhile. Is this gonna be okay for an "initial" break in - or???

Thanks,
Dan


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 Post subject: Re: Timing and Break In?
PostPosted: Sun Apr 02, 2006 1:31 pm 
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Board Sponsor & Contributor

Joined: Thu Oct 31, 2002 5:39 pm
Posts: 24522
Location: North America
Car Model:
Quote:
This thing seems to be running well.
I started it and ran it till it warmed up this AM and then set the valves again.
18 in 20 out
What cam are you running? For a stock cam and many near-stock cams, 0.010" is where the intakes should be set.
Quote:
I also checked the timing with everything hooked up (didn't plug the vacuum) and it is running about 30 after.
Don't think so...the engine won't run at 30° after TDC. I think you mean 30° before TDC.
Quote:
I run it until it warms up and I try to set it up at a high idle - I then let it run for 15 minutes or so and then shut it off for awhile. Is this gonna be okay for an "initial" break in - or???
You want to avoid constant engine speeds and let it reach full operating temperature, so steady-high-idle and runs limited to 15 minutes (why?) aren't where it's at.

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 Post subject:
PostPosted: Sun Apr 02, 2006 1:50 pm 
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EFI Slant 6

Joined: Thu Nov 14, 2002 11:29 am
Posts: 499
Location: Corning, CA - middle of nowhere
Car Model:
ISKY Cam - Grind #VA-160 - Part # 152116
Cam lift - .298
Valve Lift - .448
Dur - 264
050 Dur - 228
Lobe Center - 109
Valve Lash Hot - .018

I let it warm up to completely warm and then start figuring the time.
I've also been reving it a little high - not excessively - and I high idle it and low idle it too. Guess I should have described that part a little better.

Any ideas on what I should set the timing at?

Thanks,
D


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 Post subject:
PostPosted: Sun Apr 02, 2006 2:28 pm 
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Supercharged
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Joined: Sun Nov 03, 2002 9:20 pm
Posts: 13115
Location: Fircrest, WA
Car Model: 76 D100
I have seen motors runat 30 after, not very well, but they ran. I suggest 10 BTDC as a beginning setting and work from there.


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 Post subject:
PostPosted: Sun Apr 02, 2006 4:16 pm 
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EFI Slant 6

Joined: Thu Nov 14, 2002 11:29 am
Posts: 499
Location: Corning, CA - middle of nowhere
Car Model:
Okay, I got it sitting at around 13 now.
Runs okay.
Later,
D


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