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Re: How do YOU slow down YOUR car for index racing?
[Re: ProSport]
#1045083
08/02/11 05:48 PM
08/02/11 05:48 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Mike do you have a pic of that mounted on the carb?(Pbody)
Bob... no I dont... I made it to fit my 1050 dom...
the pin fits into a hole in the base and then the other
end goes over the mounting stud... here is a pic of
the hole
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Re: How do YOU slow down YOUR car for index racing?
[Re: Jeepmon]
#1045085
08/02/11 08:27 PM
08/02/11 08:27 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Mike.. where did you get the bracket? and did it already have a hole for the threaded rod, or did you have to modify it?
I made the whole thing... a piece of flat stock that
I bent 90*, contoured it, welded a 1/4x20 nut to it at
the angle I needed and a piece of 1/4x20 threaded rod...
and a piece of round stock I had that fit the hole
that I welded on so its nice and stable
took all of about 1 1/2 hours from design to done
and working
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Re: How do YOU slow down YOUR car for index racing?
[Re: nss guy]
#1045088
08/02/11 08:52 PM
08/02/11 08:52 PM
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Joined: Nov 2004
Posts: 8,094
Sunnyvale, CA
Jeepmon
OP
master
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OP
master
Joined: Nov 2004
Posts: 8,094
Sunnyvale, CA
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Quote:
For me when indexing racing I just run to a predetermine spot and lift... 
Thats what I'll do... Thanks for reminding me of this..
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Re: How do YOU slow down YOUR car for index racing?
[Re: Jeepmon]
#1045092
08/03/11 10:39 AM
08/03/11 10:39 AM
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Joined: Oct 2007
Posts: 4,219
New York
polyspheric
master
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master
Joined: Oct 2007
Posts: 4,219
New York
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Blocking the secondaries will work (duh!), but its' a bit dangerous.
If the engine is big enough, the high vacuum in the primaries will shut the power valve.
Boffin Emeritus
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Re: How do YOU slow down YOUR car for index racing?
[Re: polyspheric]
#1045093
08/03/11 08:55 PM
08/03/11 08:55 PM
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Joined: Jan 2003
Posts: 2,329
NE Ohio
DoubleD
top fuel
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top fuel
Joined: Jan 2003
Posts: 2,329
NE Ohio
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Quote:
Blocking the secondaries will work (duh!), but its' a bit dangerous.
If the engine is big enough, the high vacuum in the primaries will shut the power valve.
Might - but "Dangerous" - I doubt - you been hanging around too many attorneys!!!
The engine may lean down some - my experience doing this is you normally have to take the jets up by two and bring the timing back a little and watch your plugs. The advantage to taking out the secondaries is you get the full pump shot at launch versus running partial throttle against a stop
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Re: How do YOU slow down YOUR car for index racing?
[Re: DoubleD]
#1045094
08/03/11 09:18 PM
08/03/11 09:18 PM
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Joined: Oct 2007
Posts: 3,978
Hilltown Pa
1967dartgt
master
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master
Joined: Oct 2007
Posts: 3,978
Hilltown Pa
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The 2010 track champion at acto,cecil,and I think raceway park in 10.0 index runs with his secondarys disconnected. He takes off a half second by doing this and pulling timing.
Brett Miller W9 cnc'd heads
STR Chassis fabraction
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Re: How do YOU slow down YOUR car for index racing?
[Re: DoubleD]
#1045095
08/03/11 09:18 PM
08/03/11 09:18 PM
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Joined: Jun 2003
Posts: 52,972
Romeo MI
MR_P_BODY
Master
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Master
Joined: Jun 2003
Posts: 52,972
Romeo MI
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Quote:
Quote:
Blocking the secondaries will work (duh!), but its' a bit dangerous.
If the engine is big enough, the high vacuum in the primaries will shut the power valve.
Might - but "Dangerous" - I doubt - you been hanging around too many attorneys!!!
The engine may lean down some - my experience doing this is you normally have to take the jets up by two and bring the timing back a little and watch your plugs. The advantage to taking out the secondaries is you get the full pump shot at launch versus running partial throttle against a stop
I never had any issue on the pump shot... its getting
2... 1/2 volume shots but takes in alot less air so
to me that was a wash
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Re: How do YOU slow down YOUR car for index racing?
[Re: Al_Alguire]
#1045097
08/04/11 01:02 AM
08/04/11 01:02 AM
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Joined: Nov 2004
Posts: 8,094
Sunnyvale, CA
Jeepmon
OP
master
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OP
master
Joined: Nov 2004
Posts: 8,094
Sunnyvale, CA
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Quote:
I still say throw Jon in the trunk, maybe Wiley too. Then whomp away 
Wiley stopped coming out to the track with us... 
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