norfolkluego
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| posted on 9/4/10 at 09:42 PM |
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How close is too close
My carb trumpets, now with filter sicks on, are very close to the inside of the bonnet carb one is more or less touching it. Question is being so
close will they struggle to breath enough air, not sure whether to leave them as they are or cut a hole in the bonnet to let them breath better. What
do you guys think is best?
[Edited on 9/4/10 by norfolkluego]
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omega0684
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| posted on 9/4/10 at 09:59 PM |
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cut a hole, not only will air flow be restricted but it will be horrible hot air getting sucked in too!
I love Pinto's, even if i did get mine from P&O!
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austin man
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| posted on 9/4/10 at 11:02 PM |
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I think you answered your own question
Life is like a bowl of fruit, funny how all the weird looking ones are left alone
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atspeed racing
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| posted on 10/4/10 at 10:04 AM |
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as a general rule;
the absolute minimum clearance between a trumpet and airbox(or bulkhead) is 30% of its total outside diameter (including radius part)
example:
50mm trumpet = 15mm minimum clearance.
- colin.
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NOTE:This user is registered as a LocostBuilders trader and may offer commercial services to other users
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bi22le
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| posted on 10/4/10 at 10:05 AM |
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spend your time on doing a nice but in the bonnet. Engines only need three things to work and you may be robbing yours of one of the most important
ones.
Track days ARE the best thing since sliced bread, until I get a supercharger that is!
Please read my ring story:
http://www.locostbuilders.co.uk/forum/13/viewthread.php?tid=139152&page=1
Me doing a sub 56sec lap around Brands Indy. I need a geo set up! http://www.youtube.com/watch?v=EHksfvIGB3I
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MikeRJ
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| posted on 10/4/10 at 01:50 PM |
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quote:
Originally posted by norfolkluego
Question is being so close will they struggle to breath enough air
Sock filters do this all by themselves!
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smart51
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| posted on 10/4/10 at 01:55 PM |
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you need 1 choke diameter's distance from the mouth of the trumpet to the nearest solid object as a minimum.
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MikeRJ
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| posted on 10/4/10 at 06:43 PM |
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quote:
Originally posted by smart51
you need 1 choke diameter's distance from the mouth of the trumpet to the nearest solid object as a minimum.
You really don't; the majority of the air entering a trumpet comes in at an angle from the side, so even having a flat plate to up 1/3 choke
diameter away barely affects flow. It would affect pulse tuning however.
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