urgent carb question
#1
urgent carb question
need an answer fast lol....
does anyone know the purpose of this orifice plate / restrictor in the intake rubber of each carb???
it is 46mm internal diameter - but the carbs are 48mm bore...
need an answer before i grind it away and polish it up to 48mm lol
i'm wondering if it is there to collect fuel on the over-run but seems unlikely.
both intakes are exactly the same, with a slight oval section that goes to the edge, the rest of it restricts the intake by 1mm all round...
does anyone know the purpose of this orifice plate / restrictor in the intake rubber of each carb???
it is 46mm internal diameter - but the carbs are 48mm bore...
need an answer before i grind it away and polish it up to 48mm lol
i'm wondering if it is there to collect fuel on the over-run but seems unlikely.
both intakes are exactly the same, with a slight oval section that goes to the edge, the rest of it restricts the intake by 1mm all round...
#4
Dunno if they really serve a purpose like that... In some countries they are however "D" shaped to restrict the flow partially... I don't think the difference with them out will be noticable...
#5
well im not so sure - the varadero has 45mm carbs and puts out like 85 horse, why fit a 48mm carb and then restrict the inlet to 45mm
(it measured 45mm sorry not 46 as stated earlier.
this is on a 2000 1000f1.
tbh will probably be difficult to tell if it's made a difference cos it's been rebuilt atm and i fitted k&N, dynojet e1185, manual ccts and laser cans.
did have carbon vipers on but trashed the left one when i dropped it!
anyway i opened up the rubbers to the full 48mm and polished out the rim where the aluminium restrictor was - can't see it doing any harm.
one of the lads on vtr1000.org looked at a spare set of carbs and this plate wasn't there, so it isn't essential.
i'll let you know what happens - oh & cheers for the welcome
hoping to have the bike back on the road in a week or 2
(it measured 45mm sorry not 46 as stated earlier.
this is on a 2000 1000f1.
tbh will probably be difficult to tell if it's made a difference cos it's been rebuilt atm and i fitted k&N, dynojet e1185, manual ccts and laser cans.
did have carbon vipers on but trashed the left one when i dropped it!
anyway i opened up the rubbers to the full 48mm and polished out the rim where the aluminium restrictor was - can't see it doing any harm.
one of the lads on vtr1000.org looked at a spare set of carbs and this plate wasn't there, so it isn't essential.
i'll let you know what happens - oh & cheers for the welcome
hoping to have the bike back on the road in a week or 2
#6
and?
so what was the result?
i just bought new boots for my 98 and they have the metal plates insert molded in, the originals have no plate, although the ID is the same.
can't decide whether or not to chuck them up and bore that plate out to 48 mm.
thanks
i just bought new boots for my 98 and they have the metal plates insert molded in, the originals have no plate, although the ID is the same.
can't decide whether or not to chuck them up and bore that plate out to 48 mm.
thanks
#9
#10
Often smaller is better due to increased velocity..
Power News -- Think Fast--Intake Porting For Motorcycles and Cars
Power News -- Think Fast--Intake Porting For Motorcycles and Cars
#11
Often smaller is better due to increased velocity..
Power News -- Think Fast--Intake Porting For Motorcycles and Cars
Power News -- Think Fast--Intake Porting For Motorcycles and Cars
#13
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04-12-2005 09:04 PM