just wondering what these pieces are really ., i have labelled the areas on the pictures with a number :) . and gonna get some fuel line as going to be fitting these this weekend hopefully, so is there a specific size i will need or is it usually a standard size ? shapow ! cheers peeps

isnt 1 the water pipes?

also is that a BB manifold? what did you get charged? :)

isnt 1 the water pipes?

also is that a BB manifold? what did you get charged? :)

I'm not sure dude thats why i am asking lol , and yeah its a BB mani ., i had the carbs cleaned and jetted and fitted too it too

i think 1 & 3 are water inlets and outlets but not 100%. ah how much did they charge you for making that and jetting and balancing them?

i think 1 & 3 are water inlets and outlets but not 100%. ah how much did they charge you for making that and jetting and balancing them?

they charged me there standerd price , with out looking i cant remember exactly but its about 180 for the mani before VAT .

These four carbs are piped siamesed as two pairs.

1 - fuel inlets (back-pressure from the pump-tank return loop,as it needs to be a plentiful/unrestricted supply but at very low pressure).

2 - water/coolant vent hose inVout-inVout (optional, I've never connected it).

3 - vital pair of vents (flammable fuel bath exhaust,vent to safe point of atmosphere).

4 - unmarked,they're the diaphram chamber vents,and are the big ones each end (or one in the middle on older carbs). These go to atmosphere.

Bogg's manifold is looking sweet these days,nice shape that,given the head its for.

1 - fuel inlet (back-pressure from the pump-tank return loop,as it needs to be a plentiful/unrestricted supply but at very low pressure).

2 - water/coolant vent hose inVout-inVout (optional, I've never connected it).

3 - diaphram chamber vents (to atmosphere).

4 - vital pair of outlets you've missed in this reference,one for each pair of carbs,found between the trumpets/funnels (flammable fuel bath exhaust,vent to safe point of atmosphere).

Bogg's manifold is looking sweet these days,nice shape that,given the head its for.

Yeah I love the look of it ! Should look nice under the bonnet just need some filters , is the fuel line a standard size ? Or will I need a certain size ,? And what's number 4 ? Not sure which bit I'm looking at.

No. 4 Mikey, is that the same as 1 but on the opposite side?

Where best for it to go? Down towards the bottom of the bay or something?

So fuel inlet to a fuel filter. Filter to pump, pump to t piece . One part going to fuel out and other to number 1 , is this right ?

So fuel inlet to a fuel filter. Filter to pump, pump to t piece . One part going to fuel out and other to number 1 , is this right ?

Ayye!

So fuel inlet to a fuel filter. Filter to pump, pump to t piece . One part going to fuel out and other to number 1 , is this right ?

Ayye!

Ace haha glad I remember , do I need to

Run 3 anywhere ? Or have some pipe just going some where as a run off ? And is that all I'm

Connecting ? Does the air line jangle thingy need to go to that nipple on the mani ? Think I remember you saying that ,

So fuel inlet to a fuel filter. Filter to pump, pump to t piece . One part going to fuel out and other to number 1 , is this right ?

Yes.

No.4 is the big one by the pulley,there should be one the other end too,you'll see the hole in the carb. These are vents but you dont have to do anything with them. Nothing at all. You can remove the one by the pulley if its in the way. They would go to the air box and high vac would assist in opening the needles/slides,but this isn't needed.

am i attaching anything to number 3 at all then ? and am i attaching to the manifold nipple ?

3 - vital pair of vents (flammable fuel bath exhaust,vent to safe point of atmosphere).

^^ As in, nowhere near the ignition system.

The manifold pipe is for a brake servo,which you dont have. Cap it.

3 - vital pair of vents (flammable fuel bath exhaust,vent to safe point of atmosphere).

^^ As in, nowhere near the ignition system.

The manifold pipe is for a brake servo,which you dont have. Cap it.

or vacuum advance?

Yeah, you need to use if for your vacuum advance.

Yeah, you need to use if for your vacuum advance.

ace , vac advance it is then , just couldnt remember what you called it max haha ,, shapow !

Its the "vacuum advance" feed that your distributor uses to retard and advance the igntion timing relative to TDC (top dead centre).

Its the "vacuum advance" feed that your distributor uses to retard and advance the igntion timing relative to TDC (top dead centre).

that was like reading something from NASA . haha little confused hehe ,,

don't you have to have to tap all 4 cylinders feeds to get a propper vacuum feed for the vac advance because for a period of the cycle no vacuum is present due to the inlet valve being closed.

I was thinking the same thing....its almost like you need a tapin on each branch of the manifold..all daisy chained to one sort of connector block which can be distributed to brakes/dizzy etc?

I just got some CBR carbs...they have the butterflies and choke slides (so are CV carbs?) I cant remember which, but if you suck or blow a connection on them, the choke slides open up....if its suck do you connect to a tapin on manifold?

So when you open throttle, the butterflies open, but chokes slide open with relavence to airflow into cylinders? (more airflow=more vac=slides open more?)

But if its blow where the hell do I connect it lol

:S

1 -

2 -

3 -

4 -

If you BLOW on #2..the chokes open up...so how am i supposed to connect that up on the engine lol? if it was suck id understand :S

I'm lost now

Ah, would I connect the connection for choke slides to the crankcase breather? That blows and pressure increase with rpm? :)

So BB jet them when there off the Car? How does that work or do they just guess it? Sounds decidedly dodgy tbh.

Harris:

1: Fuel in

2 & 3 are bowl vents, leave to atmosphere

4: water pipes

As mark said you should have a vac feed from all 4 cylinders, when i built my setup i was told that taking from 1 would not create enough vacuum or give a clear signal for the dizzy and could even damage the servo and dizzy.