Hello there I'm just wondering if anyone knows were all 4 of these hoses go?

A . . .

B . . .

C . . .

D . . .

Thanx Dion

Hello there I'm just wondering if anyone knows were all 4 of these hoses go?

A . . .

B . . .

C . . .

D . . .

Thanx Dion

A is definatly fuel inlet,

B i think is possibly for water cooling? which you dont really need if it is..

C + D are air breathers and if you remove the pipes just leave the spouts to air.. as they normally connect to the bike airbox..

this is what i did with my carbs anyway, and ran fine, (after i fixed my failed fuel pump if people remember me..) lol

hope it helps, I'm pretty sure its right...

Hello there I'm just wondering if anyone knows were all 4 of these hoses go?

A . . .

B . . .

C . . .

D . . .

Thanx Dion

A is definatly fuel inlet,

B i think is possibly for water cooling? which you dont really need if it is..

C + D are air breathers and if you remove the pipes just leave the spouts to air.. as they normally connect to the bike airbox..

this is what i did with my carbs anyway, and ran fine, (after i fixed my failed fuel pump if people remember me..) lol

hope it helps, I'm pretty sure its right...

sorry for hijacking the topic but. could you please tell em what carb set up you ran on your NZ? looking into doing the same but not too sure as to what sized carbs i want? dont want my power t be too high up in the rev range. 36mm carbs too big for my 1.3? Also basic starting point for main jet and pilot jets. I know engine varys shit loads of need a rough starting point! Help much aprricated!

Dene's right about the vents and fuel inlets,but i personally dont recommend you air the two smaller upper vents - because they vent the fuel baths,and you dont want any fuel vapour,no matter how slight,in the bay. Hence they go into your induction. Most people do vent them as they are though,sometimes when there's an exhaust manifold directly underneath,and I've never heard of any fires. But I'm just precautious (the fact that bike carbs use the lowest fuel pressure of any combustion-engined car is one of the main reasons I'm using them).

The two biggest vents,just face them down. You'll likely have to trim the edge of the plastic fittings with a knife to be able to sit them to a southerly degree.

The metal ones are for water,but heated. You can use the line that takes steam from the top of the radiator to the expansion tank. No point in bothering,though - no need to connect water to them,they dont suffer from icing,the fuel sprays finely,the engine bay is warmer than a bikes'..

As for set-up default,they're probably about right as they are standard on the bike. You may have to adjust the pilot jets for idle (flathead screwdriverable on '99-'01 carbs,but special tool required to adjust previous versions),you may not have to touch them,i dont know.

For a 1272cc lump,i think you may get away with standard main jet sizes. If it runs lean,drill straight through the main jet in each carb (take it out first,and hold it softly in a vice,obviously..) with a 1.40mm drill bit. Dont be tempted to use a 1.5mm bit just because you have one,unless someone who's done it confirms its okay (I've only fitted them to 1391cc and 1598cc engines myself),as it may be too big and you'll get poor economy - if not just blatantly run rich. Standard are about 1.32mm - it says so on the side of the jet.

Dene's right about the vents and fuel inlets,but i personally dont recommend you air the two smaller upper vents - because they vent the fuel baths,and you dont want any fuel vapour,no matter how slight,in the bay. Hence they go into your induction. Most people do vent them as they are though,sometimes when there's an exhaust manifold directly underneath,and I've never heard of any fires. But I'm just precautious (the fact that bike carbs use the lowest fuel pressure of any combustion-engined car is one of the main reasons I'm using them).

The two biggest vents,just face them down. You'll likely have to trim the edge of the plastic fittings with a knife to be able to sit them to a southerly degree.

The metal ones are for water,but heated. You can use the line that takes steam from the top of the radiator to the expansion tank. No point in bothering,though - no need to connect water to them,they dont suffer from icing,the fuel sprays finely,the engine bay is warmer than a bikes'..

As for set-up default,they're probably about right as they are standard on the bike. You may have to adjust the pilot jets for idle (flathead screwdriverable on '99-'01 carbs,but special tool required to adjust previous versions),you may not have to touch them,i dont know.

For a 1272cc lump,i think you may get away with standard main jet sizes. If it runs lean,drill straight through the main jet in each carb (take it out first,and hold it softly in a vice,obviously..) with a 1.40mm drill bit. Dont be tempted to use a 1.5mm bit just because you have one,unless someone who's done it confirms its okay (I've only fitted them to 1391cc and 1598cc engines myself),as it may be too big and you'll get poor economy - if not just blatantly run rich. Standard are about 1.32mm - it says so on the side of the jet.

cheers for the advice. What mainjet do cbr carbs run any way also with cbr carbs i wont need to bother with a new needle will i? cars obiously dont rev as high so dont need as much fuel high up?

The bike engine is half the size,and revs to double the revs. So the pull on the carbs is actually about the same over the rev range used in each case.

That's not to say that a specialist couldn't make needles with a more ideal profile for it,I'm sure they could be closer matched to the cam's character,but they'll be close enough.

And if you remove the baths,you'll be able to read the stamping on the side of the main jets - 132 = 1.32mm.