Carb balancing question and does anybody stock K&N filters?

**nzspokes** · 9th March 2012, 20:26

Ive made a carb balancer with 4 hoses connected to each other with oil in them. When I connect it to the carbs the balancer bubbles and air rates. Is the oil to light? I have been running it lower than the carbs, should it be above the carbs?

Also who if anybody stocks K&N air filters for motorbikes?

**cs363** · 9th March 2012, 20:32

Originally Posted by nzspokes

Also who if anybody stocks K&N air filters for motorbikes?

http://www.whites.co.nz/products/kandn/986.aspx

**nzspokes** · 9th March 2012, 20:47

Originally Posted by cs363

http://www.whites.co.nz/products/kandn/986.aspx

Cheers.

They dont seem to stock one for my bike.

**Madness** · 9th March 2012, 20:55

**cs363** · 9th March 2012, 20:55

Originally Posted by nzspokes

Cheers.

They dont seem to stock one for my bike.

Their loss then, take your pick: http://www.ebay.com/sch/i.html?_saca...refLoc=2&rt=nc

(I'm assuming this is for your GPZ: http://www.knfilters.com/search/prod...x?Prod=KA-0850)

**nzspokes** · 9th March 2012, 20:57

Originally Posted by cs363

Their loss then, take your pick: http://www.ebay.com/sch/i.html?_saca...refLoc=2&rt=nc

(I'm assuming this is for your GPZ: http://www.knfilters.com/search/prod...x?Prod=KA-0850)

Yeah, I was just on there. Cheers for the link.

**NinjaNanna** · 10th March 2012, 08:36

Originally Posted by nzspokes

Ive made a carb balancer with 4 hoses connected to each other with oil in them. When I connect it to the carbs the balancer bubbles and air rates. Is the oil to light? I have been running it lower than the carbs, should it be above the carbs?

Also who if anybody stocks K&N air filters for motorbikes?

Show us the design

**nzspokes** · 10th March 2012, 11:10

Originally Posted by NinjaNanna

Show us the design

Its a KA-0850.

**NinjaNanna** · 10th March 2012, 14:44

Originally Posted by nzspokes

Its a KA-0850.

i meant of your balancer setup

**nzspokes** · 10th March 2012, 20:28

Ooops. Here it is.

Have been wondering if air is getting in the fittings. May try 2 loops instead.

Pulled a plug today showing her being rich. Removed the snorkel from the air box to lean it a bit. She seems to have found some torque.

**pete376403** · 10th March 2012, 20:43

It looks like the four tubes are joined at the bottom. Can't see how it would work assuming the top of each tube is connected to a vacuum port in the inlet manifolds (ie one tube per manifold port). Manometers that I have used have been a U tube, open at one end and the vacuum is applied to the other end, and the fluid rises up the vacuum side of the U proportional to the degree of vacuum. A carb balancer for a multi cylinder engine would be 4 U tubes

**nzspokes** · 10th March 2012, 20:52

Originally Posted by pete376403

It looks like the four tubes are joined at the bottom. Can't see how it would work assuming the top of each tube is connected to a vacuum port in the inlet manifolds (ie one tube per manifold port). Manometers that I have used have been a U tube, open at one end and the vacuum is applied to the other end, and the fluid rises up the vacuum side of the U proportional to the degree of vacuum. A carb balancer for a multi cylinder engine would be 4 U tubes

Im not saying I havnt screwed it up.

**Sable** · 11th March 2012, 00:58

Get some vacuum gauges gimplord

**NinjaNanna** · 11th March 2012, 07:49

As I understand it they shouldn't be joined at the bottom.

I'm not sure if it changes based on bike, but as I understand it balance is adjusted in banks. Carb 1&2 are balanced against each other, 3&4 are balanced against each other then 1/2 & 3/4 is balanced against each other.

All that is needed is 2 long tubes, one linking 1&2 and the other linking 3&4.

http://www.motorcyclistonline.com/ho...ync/index.html

**nzspokes** · 11th March 2012, 17:22

Originally Posted by NinjaNanna

As I understand it they shouldn't be joined at the bottom.

I'm not sure if it changes based on bike, but as I understand it balance is adjusted in banks. Carb 1&2 are balanced against each other, 3&4 are balanced against each other then 1/2 & 3/4 is balanced against each other.

All that is needed is 2 long tubes, one linking 1&2 and the other linking 3&4.

http://www.motorcyclistonline.com/ho...ync/index.html

I had read that the way ive done it works as well. But in practice it doesnt. Will try the 2 tube way next.

Cheers