Mixture Screw Length
Thread Starter
Melting Slicks
Joined: Oct 2013
Posts: 2,569
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From: San Diego California
Mixture Screw Length
Holley 6210-3.
One screw is longer that the other.
I would guess it doesn't matter as long as the taper's are similar. But, I want to ask just in case. Do they belong in certain sides of the block? Did the previous rebuilder just mix one up by chance?
Inquiring minds want to know.
Thanks.
Steve
One screw is longer that the other.
I would guess it doesn't matter as long as the taper's are similar. But, I want to ask just in case. Do they belong in certain sides of the block? Did the previous rebuilder just mix one up by chance?
Inquiring minds want to know.
Thanks.
Steve
Le Mans Master
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From: Gladstone MO
C3 of Year Finalist (appearance mods) 2019
Should both be the same. I don't recall ever seeing one carb with 2 different length mixture screws. But I've only been screwing around with this stuff for 45 years or so.
Le Mans Master
Joined: Aug 2017
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From: Cool Northern Michigan
You are hanging out with the wrong crowd. First you have the incorrect mix-match metering gaskets, and now odd size idle mix screws. You need to start all fresh with a reliable company that sells the correct rebuild kit. I would question the needle valve & seat, floats and jet correctness too.
Last edited by HeadsU.P.; Dec 28, 2017 at 07:41 PM.
Race Director
Joined: Oct 2008
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From: Long Island
Sometimes people reshape the pointed end of the screw. Most times this destroys the proper taper.
Replacement "quality" parts made in China sometimes have the incorrect lengths. . and diameters... ug...
Replacement "quality" parts made in China sometimes have the incorrect lengths. . and diameters... ug...
Team Owner
Joined: Jan 2007
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From: Southern Cal Ca
St. Jude Donor '22
As long as the taper point and thickness and length
of taper are the same, no problem
I have never seen a carb rebuild kit have them.
Some one lost or wanted a longer one for access than
The original.
Do both have proper spring?
of taper are the same, no problem
I have never seen a carb rebuild kit have them.
Some one lost or wanted a longer one for access than
The original.
Do both have proper spring?
Thread Starter
Melting Slicks
Joined: Oct 2013
Posts: 2,569
Likes: 126
From: San Diego California
You are hanging out with the wrong crowd. First you have the incorrect mix-match metering gaskets, and now odd size idle mix screws. You need to start all fresh with a reliable company that sells the correct rebuild kit. I would question the needle valve & seat, floats and jet correctness too.
Power Valve was a 6.5
Primary Squirter ... 37
Secondary " ......... 25
Primary Jets ....... 209
Secondary " ......... 86
Steve
Thread Starter
Melting Slicks
Joined: Oct 2013
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From: San Diego California
Only a thick cork gasket found on both.
Steve
Last edited by Cavu2u; Dec 28, 2017 at 10:53 PM.
Melting Slicks
Joined: May 2012
Posts: 2,192
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From: Allenton Wisconsin
On my 6210-3 the idle mixture screws are the same length. The metering blocks on the 6210-3 are different than the normal Holley square bore carbs, well at least the gaskets are not interchangeable. Primary jet sizing should be around 60 + or - depending on engine. 82 on rear seems good for SBC. Use only Genuine Holley parts and get the kit with the blue gaskets and green accel pumps. T
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Thread Starter
Melting Slicks
Joined: Oct 2013
Posts: 2,569
Likes: 126
From: San Diego California
On my 6210-3 the idle mixture screws are the same length. The metering blocks on the 6210-3 are different than the normal Holley square bore carbs, well at least the gaskets are not interchangeable. Primary jet sizing should be around 60 + or - depending on engine. 82 on rear seems good for SBC. Use only Genuine Holley parts and get the kit with the blue gaskets and green accel pumps. T
Steve
Le Mans Master
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Thread Starter
Melting Slicks
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From: San Diego California
Burning Brakes
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You are reading it upside down. That is a "602" jet, actually a 60-2 jet, which is a precision #60 jet at the middle #2 flow rate (#1 least, #3 most). Those usually came on the spreadbore carbs sold as emissions certified replacements.
I've got several 60-2's from spreadbore carbs I have rebuilt.
I've got several 60-2's from spreadbore carbs I have rebuilt.
Last edited by Dynra Rockets; Dec 30, 2017 at 08:53 PM.
Le Mans Master
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You are reading it upside down. That is a "602" jet, actually a 60-2 jet, which is a precision #60 jet at the middle #2 flow rate (#1 least, #3 most). Those usually came on the spreadbore carbs sold as emissions certified replacements.
I've got several 60-2's from spreadbore carbs I have rebuilt.
I've got several 60-2's from spreadbore carbs I have rebuilt.
Thread Starter
Melting Slicks
Joined: Oct 2013
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From: San Diego California
Team Owner
Joined: Jan 2007
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From: Southern Cal Ca
St. Jude Donor '22
Thread Starter
Melting Slicks
Joined: Oct 2013
Posts: 2,569
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From: San Diego California
