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Old 06-16-2004, 06:25 PM   #1
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Default Engine tweak question

I was woundering should i remove the lock pin for carburator and just seal it? I find it useless or am i wrong?To much headach on tweaking the engine.
here is a pic of what i mean part number 1686:
http://www.hpiracing.com/graphics/in...1626-1_pg2.jpg


thanks

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Old 06-16-2004, 07:03 PM   #2
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Default Re: Engine tweak question

Quote:
Originally posted by Beholder
I was woundering should i remove the lock pin for carburator and just seal it? I find it useless or am i wrong?To much headach on tweaking the engine.
here is a pic of what i mean part number 1686:
http://www.hpiracing.com/graphics/in...1626-1_pg2.jpg


thanks

beholder
That lock pin, holds the carb in place, so it can't come off or move.
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Old 06-17-2004, 05:51 PM   #3
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sorry let me rephrase. i meant the low rpm needle adjuster. not the one that is standing but the one that goes perpendicular to it.
was thinking of removing it and just block. that way only have to adjust the needle valve.
the comsept is similar to an airplane engine.


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Old 06-17-2004, 08:16 PM   #4
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Part 1686 is used to hold the carburetor in the throat. It's required.

I don't understand why it's a pain as once it is tightened, it shouldn't be touched again unless you need to rotate the carb for a change in linkage set up.

It has nothing to do with tuning.
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Old 06-17-2004, 10:54 PM   #5
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Quote:
Originally posted by Beholder
sorry let me rephrase. i meant the low rpm needle adjuster. not the one that is standing but the one that goes perpendicular to it.
was thinking of removing it and just block. that way only have to adjust the needle valve.
the comsept is similar to an airplane engine.


beholder
Not sure what you mean but aero engines have a low rpm needle adjustment also. The only difference being it is so rarely touched people dont realise it is there. Its on the opposite side of the carb to where it would be on a car engine.

For a car engine you cant just remove a needle and block it off. The carb is designed to run in a certain way that requires the needle. Remove it and you will be constantly fighting with either too lean or too rich an engine (either runs fast or wont stay running).
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