any one had good success with a certain carb jet config on the main and ac jet for running a t28?
any one had good success with a certain carb jet config on the main and ac jet for running a t28?
running 18-20 psi
just reading looks like .90 on ac jet
so just the main i need to know?
All cars are different matey so one setup may not work well on your setup, if I was you invest in a decent wideband kit - Innovate, AEM, Zeitronix. Make sure it is a wideband setup and not some ****e narrowband crap.
Its all custom really to the car and set up. If I was you get it on a rollers and then play with the jets to make sure its not getting rich or lean and that the air/fuel ratio is good otherwise there could be trouble!
where can i get a wideband kit
rather have the satisfaction of doing it myself
check on ebay or if like me I bought mine from the club shopOriginally Posted by price82
Keep the main & a/c jets standard. Modify the enrichment circuit fuelling instead.
now im confused havent heard that mentioned before
also i cant see one of these analysers in the club shop am i being blind????????
at work i have a gas analyser for doing mot can i use any data from this to monitor air/fuel
like hc levels or lambda readings?
this is interesting
Lambda
Most practical AFR devices actually measure the amount of residual oxygen (for lean mixes) or unburnt hydrocarbons (for rich mixtures) in the exhaust gas. Lambda (λ) is the measure of how far from stoichiometry that mixture is. Lambda of 1.0 is at stoichiometry, rich mixtures are less than 1.0, and lean mixtures are greater than 1.0.
14.1-1 is the stoichiometric afr for petrol
The ones you use at your work will prob allow you to set the idle mixture up but thats about it, to check your fueling all the way through the rev range you need to drive it or put it on the rollers and use an AFR kit.
I use mine on the road, fit my kit to the car and then take it for a drive and see what the fuelings like.
14.1-1 is what you want on idle, around 12.1-1 is what your aiming for on boost.
yeah i think your right
was trying to think of jacking up front of the vehicle and leting wheels spi n but with no weight on the wheels the results will not be accurate
plus could be a little dangerous
also if ive got this right with an afr you dont need to change the jets just drill out the on boost jet??????????
Boost jet? That will be the secondary enrichment jet
As people mentined before you can't say weather you'll need to use standard jets or slightly larger, only way to find out is check what your fueling is like now and go from there. Every engine is diferent so some may need more mods then others
It may be a few hours of playing about but worth it.
yeah def worth it
any idea if the club sells any afr equipment?
rather buy it from club than ebay
They use to sell the Inovate LC-1 kit but don't know if its still there or not.
I've got the LM-1 kit, easy enough to use.
is it for sale lol?
No but i do set peoples cars up.
If someone wanted it checked or as you say fancied doing it yourself i can stick the kit on your car for you and check it to make sure its fueling right while you mod it, i made a clamp so i can fit the lamda prob in most tailpipes if you don't have a bung in the downpipe
where are you based?
I'm in Aylesbury mate.
100 miles from me thats quite far
do u do a rental scheme on this equipment?
you could make a fortune lol
Lol! Yeah i could make a mint.
Unfortunatle not, i keep it with me all the time. Quite a few members have this kit, maybe someone near you has one you could borrow. I got mine off ebay for a resonable price so not too hard to get hold of.
is any there any members near this chap ?? who have an afr meter ??
if not get it on some rollers and set up one you have fitted the cam and turbo , i will be goin for the same set up on my engine once built
While were on the subject of afrs, wideband kit etc I think mine is playing up, It used to work well and give real stable readings but now they are all over the place at wot. I thought it could be the sensor so I got another from grahame goode but to no avail, its still all over the place. It pissed me off at the rtoc pod day because I knew in my head I had fuel for another 3-4psi but could not see it on the lm-1, I could not risk going bang because I had a 250 mile drive the next day plus I did not want to look like a plonker crossing the line with a blown h.g.
Sorry for the hijack but there is no point starting another thread on something so similar
The club shop does not stock them atm, but read this thread...
https://rtoc.org/boards/showthread.php?t=1441
Got my LM-1 and RPM Clamp ect coming from the states should be here on Tuesday, you can get them on ebay.
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