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What size carbs?

  • 40hv's

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  • 38's

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  • 36's

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  • Or smaller

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  • Straight 40's

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What size Lectron carbs??

2071 Views 12 Replies 6 Participants Last post by  89 Chevy
I am going to switch to lectrons this year, and I would like to know what size carbs would work good on a 7mill stock cylinder triple port bike.

I have talked with a couple different builders, and some say to run 40HV's and some say to run 36's or 38's.

Thanks!
1 - 13 of 13 Posts
Keep in mind, Lectrons go down 2mm in size at the venturi, then back to the intake size. HV are 4mm.

40mm straight through will work fine for your triple port 7 mil on alky...
Thanks for your help!
i second that might even try the 41.5's/44's? the straight 38/40's work great on stockers also also i would HIGHLY recomedn pack lectrons...
hey that vote poll is pretty cool!!
I though it was cool. Thanks for all the help, keep your opinions coming!
i ran a set of 40.5's on my 7mil cub and they worked awsome,but the lectrons are hard to tune in cold weather which all carbs are..lol..
I disagree Triple...
I richened the needle up less than half turn and let it rip...opened the PJ another 1/2 turn or so...and that was methanol on the ice.
QUOTE (dajogejr @ Jan 31 2009, 04:56 PM) index.php?act=findpost&pid=28583I disagree Triple...
I richened the needle up less than half turn and let it rip...opened the PJ another 1/2 turn or so...and that was methanol on the ice.


true i wasnt use to lectrons and really didnt have time to go to test n tune and if u ran yours on ice and u ran good then maybe something was wrong with my carbs or a air leak which i wouldnt dought an air leak it never ran the best it should have but ran better with lectrons than keiheins..
Thanks for the help!
QUOTE (89 Chevy @ Feb 1 2009, 11:52 AM) index.php?act=findpost&pid=28684Thanks for the help!
You getting close to getting it done .
Kinda sorta...Motor is done, just have to put it all back together.
1 - 13 of 13 Posts
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