Porks bike carbs and boost project

[MicrAde]

I bet this is the reason why it's not getting enough fuel lol

It may not be helping!

 

[MicrAde]

Get a piccy more from front or back, wanna see how wheels sit within arches

 

[pork]

Will do when I'm back from petrol station lol

 

[karlj]

Looks odd that high

 

[pork]

They should fit nice once lowered

 

[MicrAde]

Nice.....now get that grinder out!

 

[pork]

Also, I hooked up rev counter for quick look, it loses power at 4-5 k, tgem feels like its coughing lol.
I've tried going from 1.3 to 1.6 jetts, even bigger maybe?

 

[MicrAde]

Also, I hooked up rev counter for quick look, it loses power at 4-5 k, tgem feels like its coughing lol.
I've tried going from 1.3 to 1.6 jetts, even bigger maybe?

Sweet, I had a right ball ache trying to fit a tacho Take it yours is ok. Dont people use 1.6's on non boosted bike carb conversions? It may be enough for n/a but not boosted. How easy are jets to get? Easy enough to get another set if you drill them out and fook em up?

 

[pork]

I've got 2 sets, one lot drilled to 1.6, another I've done to 2.

I'm running without turbo, for now

 

[pork]

Tacho wired up easy jus need to make it all neat

 

[MicrAde]

I've got 2 sets, one lot drilled to 1.6, another I've done to 2.

I'm running without turbo, for now

What jets were you running in your previous k10?

 

[MicrAde]

Tacho wired up easy jus need to make it all neat

Mine wired up easy enough but couldn't get a stable reading Back to ears and seat of pants now

 

[pork]

No idea, bought them off superls, back when I knew even less than I do now about engines

 

[MicrAde]

No idea, bought them off superls, back when I knew even less than I do now about engines

And now you're building a quad carb turbo! Yay!

 

[l_jonez]

Without a AFR gauge you can't be sure it's leaning out. I'd say it's probably to rich with 1.6 main jets running N/a. I've got 1.35 in my 1330 and their pretty much spot on.

 

[pork]

So could overfueling cause it to lose power?

 

[l_jonez]

Yep will cause it to bog down

 

[pork]

I'm running about 4psi fuel pressure too, you reckon dropping that will help?

 

[l_jonez]

Won't make any difference unless the bowls are overflowing (but you would see fuel coming out of the overflows), with carbs the fuel is dragged out of the float bowls via the jets.


The floats regulate how much fuel is in the bowls, when full they shut of the supply and as it drops they open up to allow fuel in. The only real difference fuel presure makes is how quick the bowls fill up.

 

[pork]

Won't make any difference unless the bowls are overflowing (but you would see fuel coming out of the overflows), with carbs the fuel is dragged out of the float bowls via the jets.


The floats regulate how much fuel is in the bowls, when full they shut of the supply and as it drops they open up to allow fuel in. The only real difference fuel presure makes is how quick the bowls fill up.

Ok thanks, need that sensor!!

 

[pork]

Could there be a blockage somewhere too? All the idle jets were blocked

 

[l_jonez]

Possible. It's only really the jets that can make the difference when blocked

 

[pork]

Which jets? All of them?

 

[pork]

Which jets? All of them?

 

[frank]

running without an air filter/filters will have a big effect on the size of jets neil

 

[pork]

Dang, well can't get that right till turbos on then lol

 

[l_jonez]

It could be worth cleaning them all.

This diagram might help explain which jet does what

 

[pork]

It could be worth cleaning them all.

This diagram might help explain which jet does what

Thanks, I surprisingly understand that

 

[MicrAde]

Thanks, I surprisingly understand that

Even more surprisingly....so do I !!

 

[jk9194]

White wheels will be looking hard though

 

[pork]

Jus been goin they some bike forums with same problems as me, valve clearances could be a problem,

I ave been having trouble with ignition, cylinders not firing unless lead was jus hovering above plugs (very strange) got better with overnight charged battery, would a failing battery give a 'weak' spark at WOT?

 

[MicrAde]

Jus been goin they some bike forums with same problems as me, valve clearances could be a problem,

I ave been having trouble with ignition, cylinders not firing unless lead was jus hovering above plugs (very strange) got better with overnight charged battery, would a failing battery give a 'weak' spark at WOT?

Didn't valve clearances come up a while back neil??

 

[frank]

is yours points ignition neil or electronic ? because dwell can effect the strength of spark eh

 

[pork]

Didn't valve clearances come up a while back neil??

Lol, yes, I know,

Il have look tomorrow

 

[MicrAde]

Also, how your coil?

 

[pork]

is yours points ignition neil or electronic ? because dwell can effect the strength of spark eh

I've ordered new rotor arm, dizzy cap, maybe should order new coil too


So would a weak spark be causing these issues?

 

[MicrAde]

I've ordered new rotor arm, dizzy cap, maybe should order new coil too


So would a weak spark be causing these issues?

May be worthwile, only a tenner for a new one and you have had ignition issues

 

[pork]

May be worthwile, only a tenner for a new one and you have had ignition issues

Where you seen that?

 

[MicrAde]

I got one off the bay some time last year, brand new, a tenner delivered, transformed how mine was running

 

[pork]

Hmmm, do motor factor places stock these? Or is a order in of eBay affair?

Embarrassing as it sounds, how would I know what ignition type I have? Points or electrical ignition? (Really need a basic mechanics course!)

 

[MicrAde]

I got one off the bay some time last year, brand new, a tenner delivered, transformed how mine was running

Sorry I lied, just checked my Ebay purchase history and it was £5.99 plus £5.99 delivery

 

[MicrAde]

Hmmm, do motor factor places stock these? Or is a order in of eBay affair?

Embarrassing as it sounds, how would I know what ignition type I have? Points or electrical ignition? (Really need a basic mechanics course!)

Take your dizzy cap off, take a photo of inside dizzy n put in on here

 

[frank]

Hmmm, do motor factor places stock these? Or is a order in of eBay affair?

Embarrassing as it sounds, how would I know what ignition type I have? Points or electrical ignition? (Really need a basic mechanics course!)

the electronic dizzy has 2 or 3 wires iirc neil (and the points one 1 wire ?)

 

[pork]

Well, can't do that now, but, inside dizzy cap, it's just 4 metal knobs

 

[pork]

the electronic dizzy has 2 or 3 wires iirc neil (and the points one 1 wire ?)

I have 2 wires going to dizzy if that helpd

 

[MicrAde]

Looking in haynes it looks like points dizzy cap is held on with clips whereas electronic ign cap screws on, dont know if thats across the board though.

 

[pork]

Mines screwed on.

 

[MicrAde]

Mines screwed on.

And 2 wires inside?

 

[pork]

And 2 wires inside?

Well 2 wires going to dizzy

 

[pork]

I'm very grateful btw people for your help