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s-i-m-m-o
Regular Member
United Kingdom
597 Posts |
 Posted - 30/03/2008 : 13:19:21
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rite then im just overhauling the nc30 and thought id check the main jets sizes as the throttle response is a bit poo.
im changing the spark plugs and air filter as well as the main jets.
at the moment all 4 main jets are 117.5
whatb shoud i change them to? i also have a twin port blueflame can on it with NO baffles in it.
any help appreciated.
cheers. |
simmo818@hotmail.co.uk
add me?! /\/\/\
1991 nc30 - weekend toy /\/\/\
fzr400 race bike - for LAJ Racing /\/\/\
1998 ER-5 commuter |
Edited by - s-i-m-m-o on 30/03/2008 23:50:53 |
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viffer106
Senior Member
United Kingdom
2175 Posts |
Posted - 31/03/2008 : 09:39:19
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Generally speaking, with just an end can, you can get away with not upgrading the juets, however, if you have no baffles, then i'd recomment going up a size...
Maybe to 120's all round?? |
New E-mail: chris.cannon396@gmail.com
90' VFR 400 NC30 "If it 'aint broke, dont fix it!" |
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CMSMJ1
Forum Veteran
United Kingdom
3623 Posts |
Posted - 31/03/2008 : 11:42:17
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is your airbox standard? have you looked at your plugs?
You say throttle response is poo - how so. from pickup> 1-5k revs? in the midrange 5-9k revs?
good mod for throttle response is to drill the slide hole to 2.5mm. enables the slide to react quicker and so improving thottle response
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89 NC30 my mate Number 9
IMPERATOR REX ANGLORUM |
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s-i-m-m-o
Regular Member
United Kingdom
597 Posts |
Posted - 31/03/2008 : 21:03:16
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its from pickup > 1-5k.
is there a guide for doing the slide hole mod?
cheers |
simmo818@hotmail.co.uk
add me?! /\/\/\
1991 nc30 - weekend toy /\/\/\
fzr400 race bike - for LAJ Racing /\/\/\
1998 ER-5 commuter |
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Cammo
Forum Veteran
Australia
3023 Posts |
Posted - 31/03/2008 : 21:49:00
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| Yeah you would probably want to set the idle screws and balance the carbs also. |
I DUG the underground! |
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Royster81
Left handed surfer
Ireland
3914 Posts |
Posted - 31/03/2008 : 22:09:42
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quote:
Originally posted by CMSMJ1
good mod for throttle response is to drill the slide hole to 2.5mm. enables the slide to react quicker and so improving thottle response
i was correct on this the other day,the slide reacts slower as the hole is larger more air can pass through it and it takes longer to lift thus making the mix richer,but your right ,response is improved |
400R,loud proud and modified. |
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main jets sizes? need help please
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