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Curtis' micra k10
- Thread starter curtis
- Start date
nexussteve
The reason you're happy!
There's a vid on YouTube of some guys revving a K10 in a scrappy until the engine blows up!
It's surprising how long it lasts!!
Keep it going dude!! Don't let us down!
It's surprising how long it lasts!!
Keep it going dude!! Don't let us down!
frank
Club Member
nice one curtis"Running in" seems to be going ok
Bike carbs are slightly slower then the webers, but not by much
At 130miles so far
, you could do with a wideband lambda sensor and voltmeter on the dash, to finetune those carbs, eh
frank
Club Member
curtis
mine is just a narrowband setup, so it only gives a small window of air/fuel ratio (about 14.2:1 to 15.2:1 apparently) but it,s still usefull (albeit limited).
i think the 2 outer wires on the sensor are for 12 volts in, and pre-heater, and the middle wire outputs a voltage of 0 to 1v, (0.5v being 14.7:1 mixture).
a wideband sensor has a much wider range, but i think they,re a few bob tho
mine is just a narrowband setup, so it only gives a small window of air/fuel ratio (about 14.2:1 to 15.2:1 apparently) but it,s still usefull (albeit limited).
i think the 2 outer wires on the sensor are for 12 volts in, and pre-heater, and the middle wire outputs a voltage of 0 to 1v, (0.5v being 14.7:1 mixture).
a wideband sensor has a much wider range, but i think they,re a few bob tho
superls
K10 Tuner
i have a 4 wire sensor, but dint know the wiring, i think it has 3 white wires and 1 black, what wires does yours have?curtis
mine is just a narrowband setup, so it only gives a small window of air/fuel ratio (about 14.2:1 to 15.2:1 apparently) but it,s still usefull (albeit limited).
i think the 2 outer wires on the sensor are for 12 volts in, and pre-heater, and the middle wire outputs a voltage of 0 to 1v, (0.5v being 14.7:1 mixture).
a wideband sensor has a much wider range, but i think they,re a few bob tho
OP
OP
curtis
Ex. Club Member
Im pretty sure they are yes, as you can't turn them upside down with fuel in them otherwise the diaphram swells
frank
Club Member
i think the vv carbs are designed so that when you hit the throttle, the butterfly is wide open but the slide is delayed, which creates a high vacuum around the jet, adding extra fuel (acceleration enrichment).
so if yours has a flatspot when you floor it (if thats what you were saying), the slides might be lifting too early (maybe too soft springs or too much vacuum acting on the diaphram) ?
frank
Club Member
curtis
dont forget those carbs were setup for a bike, with a lot less rotating mass, where the rev,s were climbing at a much higher rate (you could do with a super light flywheel really )
if that cam is a reprofile, it might need advancing ? ,it might bring the powerband down a bit, so you dont need to rag it all the time
dont forget those carbs were setup for a bike, with a lot less rotating mass, where the rev,s were climbing at a much higher rate (you could do with a super light flywheel really
)if that cam is a reprofile, it might need advancing ? ,it might bring the powerband down a bit, so you dont need to rag it all the time
superls
K10 Tuner
exacty what mine did, if you flattened the throttle at say 2.5k not alot happened, actually it worked better if you didnt go the full way dowm, but when you reach 4k it took off then it was change gear time, same in a ll 4 gears i had at the time, lol
frank
Club Member
FFS, no wonder you,ve got no response till 4000
.i usually put some 2" masking tape over the bellmouth,s, then punch a 20mm hole in the middle (you should get instant throttle response then), then gradually open the holes up, to give some idea of jet size, needle setting, filter size and diaphram spring etc
superls
K10 Tuner
lol calm down frank, i didnt have one either buts that cos i couldnt fit one in, my next set will have one tho, but will try the masking tape method also.FFS, no wonder you,ve got no response till 4000
i usually put some 2" masking tape over the bellmouth,s, then punch a 20mm hole in the middle (you should get instant throttle response then), then gradually open the holes up, to give some idea of jet size, needle setting, filter size and diaphram spring etc
Speedle
Ex. Club Member
Yep, pretty much it, nothing really happens at 2.5-3K but soon as 4k comes along its power all the way...lol
I do miss the webers now
But if i get the timing sorted and the idle etc done it should be ok
told you so! didnt listen
powerband with the bike carbs is totally different to the webbers. i.e. sh*t!!!
the manifold design for the webbers was much better and infact the webbers were better in everyway as far as im concerned. some may not agree but unless youve tried both im not interested in your opinions
OP
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curtis
Ex. Club Member
I had my reasonstold you so! didnt listen
Speedle
Ex. Club Member
pfft you should have sold family members of limbs in order to keep those webbers! you'll likely never see another set again now. dedication to the cause my friend!
*or limbs!
OP
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curtis
Ex. Club Member
Daveeeee wont be keeping them long, and i have first dibs on them
daveeeeee
Ex. Club Member
Beeing someone who has also now tried both the webers and bike carbs,, i agree with speedle, the webers are better, but they havent blown me away in comparison. pound for pound the bike carbs are prob better value, and if set up right, i think they could easily give the webers a run for there money.
frank
Club Member
curtis
"calm down frank" lol .
bear in mind the mainjet realy only governs the mixture at full throttle (or in the case of vv carb,s, slide fully up), and the tapered needle does most of the metering at smaller openings.
for example, the su carb,s (same vv setup) had only 1 mainjet size and hundred,s of different needle shapes.
and there,s no reason why the carb,s should,nt be at least as good as the webber,s, the carb,s and manifold have a short, straight inlet tract like any superbike or motorsport engine, perseverance will pay
"calm down frank" lol
.bear in mind the mainjet realy only governs the mixture at full throttle (or in the case of vv carb,s, slide fully up), and the tapered needle does most of the metering at smaller openings.
for example, the su carb,s (same vv setup) had only 1 mainjet size and hundred,s of different needle shapes.
and there,s no reason why the carb,s should,nt be at least as good as the webber,s, the carb,s and manifold have a short, straight inlet tract like any superbike or motorsport engine, perseverance will pay
Speedle
Ex. Club Member
indeed i agree with you there dave, the webbers dont give alot more HP but they have a better power delivery and power curve IMO plus they are easier to tune and live with day to day
about time we had some updated pics of your project dave!
superls
K10 Tuner
not having tried the webbers i cant base my opinion on complete fact, but i never found my bike carbs hard to live with day to day.indeed i agree with you there dave, the webbers dont give alot more HP but they have a better power delivery and power curve IMO plus they are easier to tune and live with day to day
about time we had some updated pics of your project dave!
ok the maunal choke was a bit of a pain after the standard auto, but the webbers have this also?
same with the idle up thing.
and with a 50-50 driving style i could still return between 35-37 mpg, (dont know wot the webbers do??
daveeeeee
Ex. Club Member
i never had to use the manual chock on them carbs and never had problems starting them, might be a different story tho when we hit january! as for mpg i cant accuratly say yet as the webers where jetted and tuned to curtis's ma12, i wont get a true picture of mpg untill their tuned to my engine and had some more use. but theres no way there worse than the bike carbs. 35mpg is prob the max on the bike carbs.
OP
OP
curtis
Ex. Club Member
Yeah, sometimes it starts on the first turn, and sometimes you need a little throttle...but thats usually once they have been running for a while
I still need to get my locking wheel nuts off without the key, so gonna have another look tonight
Did you get any pics of it with the white wheels on mate?
Make sure k10franny starts a blog
Any pics of the GTi?
Make sure k10franny starts a blog
Any pics of the GTi?
Makrakin08
Ex. Club Member
how much did u sell it for?
OP
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curtis
Ex. Club Member
I didnt sell it with the white alloys on
K10Franny is really loving the car lol, he wouldnt stop smiling
im glad he likes it so much and hes already planning a re-spray...
£900 was the price
GTI will be picked up Friday
Well chuffed with www.elephant.co.uk
Im insured on the almera GTI 2.0 1999 For £760 TPFT im 19 with 1 years no claims
K10Franny is really loving the car lol, he wouldnt stop smiling
im glad he likes it so much and hes already planning a re-spray...
£900 was the price
GTI will be picked up Friday
Well chuffed with www.elephant.co.uk
Im insured on the almera GTI 2.0 1999 For £760 TPFT im 19 with 1 years no claims
thats a pretty good price for insurance mate!
white wheels going on the mera then?
white wheels going on the mera then?
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curtis
Ex. Club Member
http://www.micra.org.uk/album.php?albumid=8
My new GTI
Stickers on side skirts coming straight off! lol
My new GTI
Stickers on side skirts coming straight off! lol
OP
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curtis
Ex. Club Member
http://www.almeraownersclub.net/showthread.php?t=26168
If anyone is interested in my GTI I made a blog on the AOC
Enjoy
If anyone is interested in my GTI
I made a blog on the AOCEnjoy
OP
OP
curtis
Ex. Club Member
Yes i agree, i would now recommend anyone with a standard k10 to get uprated shocks and lowering springs...Does improve it a whole lot!!
