Power Republic - How To Service The Tillotson Carburettor For The IAME KA100 Engine

In this video we show you how to service the Tillotson Carburettor for your IAME KA100 engine.
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[@user-og6hh7qp7o]

Please make a video about carb pressure testing and adjust. More details

[@paulcombes3782]

Great informative video sir ! Also I noticed the WURTH product you use . It may be a little more expensive to buy but is sooo much better than most , Thanks for the info .

[@PowerRepublic]

Hey Paul. thanks for tuning in and you are very welcome for the info. I like the Wurth products too, although they don't sponsor our channel yet 😉. maybe I need to talk to their marketing department?????

[@ChrisHulbert]

Thanks so much, very helpful, rebuilding carbs can be such a fiddly thing!

[@PowerRepublic]

hey chris, thanks for tuning in and liking the videos. yeah the first few times they can be tricky but after you practise on a couple, should be all sweet, specially with a video to watch and follow along. what type of karting are you doin ?

[@ChrisHulbert]

@@PowerRepublic I bought a second hand arrow 3 junior for the kids, just trying to get the KA100 to come to life at this point :)

[@PowerRepublic]

yeah it won't be much. carb kit, fuel lines, spark plug and your GTG

[@user-og6hh7qp7o]

Thank you

[@rickvanhorne8897]

Everything went just like your video except I did not tighten the inlet tube enough and the carb was flooding. Tightened it to where i did not see threads above the carb body and it was great.

[@PowerRepublic]

wicked man, get some fast laps times and we are all good !!

[@tk7615]

I lost the copper washer for the high speed needle jet, can I go without it or where can i get a replacement from

[@user-np9sl8de8t]

Better video than what tillotson has on there site thats for sure

[@PowerRepublic]

Cheers legend and thanks for watching

[@user-np9sl8de8t]

@@PowerRepublic my hb10a on my x30 super 175 is just dumbing gas had 2 guys look at it and they can't figure it out I'd like to send it back to tillotson just to find out what's wrong with it and for the cost of a new one I just don't know what to do yet

[@user-np9sl8de8t]

Follow up on my carb I put the stiffest spring I have checked the pop-off and I can only get it up to 12 psi but it don't pop and it holds at 12 and it kinda runs and still dumps fuel out of the carb same as had been ?

[@mattclarke1838]

How do you go about changing the pressure if not at 8 and 10lbs? Also, what does changing the angle of the lever do? Thanks!

[@PowerRepublic]

Hi Matt, you need to remove the small flat blade screw head from the carb body that holds down the the roll pin for the lever and spring. Then you can stretch the spring or cut off two coils to change it's tension depending if you want to go up or down in pop pressure. If you raise the lever angle you increase the float level so the air fuel mixture will be slightly richer right across the board, if you lower the lever angle you reduce the float level you lean out the air fuel mixture slightly.

[@mattsneds6801]

Would you recommenced putting the disassembled carby in a ultrasonic cleaner to remove any small impurities each time as an extra step?

[@PowerRepublic]

yeah that's a great idea. if you have one at home, do it. not sure if you would need to do it before each race.

[@R.B_B]

Another good video Question how to know the right blown off pressure to my engine?

[@PowerRepublic]

You can set them at 10psi. Otherwise play around with them. 8psi low, 10psi high.

[@BEFITtingImage]

How do you set them? I saw how to test, not to set? Thanks

[@jarvyzer9214]

Hello, can you explain to me the effect of the different weights in springs? And what the effect is of a higher and lower pop off, and when should you apply it. thanks for your reply

[@PowerRepublic]

higher pressure = leaner mixture lower pressure -= richer mature use a lambda sensor to log your AF ratio and the changes you make. then you should be able to ace your tune?

[@kaloyanvuchkov6114]

Can you tell in fully closed high and low jet,how many turns to open is optimal ?

[@PowerRepublic]

Kaloyan Vuchkov i recommendation is for 60mins LSJ and 55mins HSJ for KA3. If I’m doubt the best bet is take it to your local engine shop with an engine Dyno and asked them to tune it for max power at full engine temp. Then get them to mark the carby with an engraving tool as your reference spot. Then you can fine tune your engine on track wish a Mychron lambda Sensor Kit. Where about do you live?

[@robertkamperin4382]

Hi! We are running the Iame waterswift 60cc with the Tillotson HW31A carb and have noticed that performance variations are quite big between different units. Example: this weekend we tested 4 different units, some better and some worse, and unfortunately we were not allowed to keep the one that was running the best (team mates favorite carb 🤷🏽‍♂️). In what ways can the performance of the HW31A carbs be legally optimized outside of the tuning the low/high jetting needles (we ran all carbs with the same settings and temp didn't vary more than max 2 celcius throughout the day)? Cheers and thanks for a great channel!!

[@PowerRepublic]

Hi Robert, most rules don't allow for 'modification's' per se, how ever you can change the jets, float height/lever position and spring pressure. where about do go racing ?

[@robertkamperin4382]

@@PowerRepublic we are racing in Spain and until now we have primarily used Rotax where the same thing applies (some carbs are garbage and some are good, then of course the settings come on top). Some good advice on float height, spring and similar things would be great to understand in addition to adjusting the high/low needle. 🙏

[@thomastawfik8465]

At 7:50 what does the lever do when you bend it up or down? And also does this video work on the carbs on an X30?

[@PowerRepublic]

richer is higher, leaner is lower. play around with them to see what works best for you. same carby for X30 so yeah it will work for sure

[@thomastawfik8465]

Than what’s the difference between the two screws on the outside of the carb and the lever inside the carb?

[@joshracing6065]

Could you do an informational video about the ka100? Thank you

[@PowerRepublic]

Hi josh, anything in particular that you would like to see?

[@joshracing6065]

Possibly the best way to get a KA4 engine performing (carby /engine setting)

[@PowerRepublic]

@@joshracing6065 the best way to tune the engine on the track is with a lambda sensor in the exhaust hooked up to your Mychron 5. have you got one on your kart already?

[@joshracing6065]

@@PowerRepublic yeh do mate, is It true that all the ka100 engines have diffrent power varients depending on when they where made have you done any dyno testing on say a brand new S or T series engine compared to say an N or P for example. Thank you

[@acm69882000]

I'm getting gasoline in the crank shaft area of my iame leopard motor, causing motor to back fire and not start. Is this due to ring failure?

[@PowerRepublic]

not really. it is common. have you tried starting the engine with the throttle pedal slight cracked open? this used to help me with that problem

[@p.c.h.6721]

And how often do you service the carburetor?? Once a month? Once a year? Every 5 years?

[@PowerRepublic]

We do ours before any important meetings just to be sure. Otherwise you can leave them for a month or two. The gaskets are effected from the petrol, so they will only run at 100% for a short time, even if the engine hours are not used up.

[@p.c.h.6721]

Power Republic Oh really? I didn’t know that! I guess I must service my carburetor immediately, I have a Tillotson, the one that comes with the new IAME X30. Thank you so much for the help, I watch your videos all the time. I also have a Rotax DD2, it would be awesome if one day you could make a video showing how to adjust the idle, pilot jet and air screw on the carburetor that comes with the Rotax engine. Thanks again!

[@PowerRepublic]

No problems my friend. I'll make a Rotax video on the carburettor very soon.

[@apatinoracing]

Do the X30 & KA100 use the same carb?

[@PowerRepublic]

nah, x30 is bigger

[@grg6112]

what product are you using to clean the carburetor?

[@PowerRepublic]

carby cleaner or brake cleaner usually. you can also too ultrasonic clean them too

[@davemessenger4752]

I'm getting alot of alcohol in my oil ,any suggestions

[@PowerRepublic]

are you using e10 fuel ?

[@davemessenger4752]

No methanol

[@archerwhipp5724]

carb not pulling any fuel ?

[@PowerRepublic]

Fuel pump kit f’ed or float level too low

[@jpkvids]

just turned down my 9mm socket, only to find its actually an 8mm....☹️

[@PowerRepublic]

grrrr that sucks, sorry for the bump steer

[@jpkvids]

haha, all good@@PowerRepublic - video was otherwise very helpful, and I successfully completed my first carby rebuild!

[@Aviopic]

Vaseline on rubber is not a great idea, petroleum eats rubber. A silicone based lube is a better option. Other than that great video as always 👌

[@TOMVUTHEPIMP]

Petroleum eats rubber?? Hahaha....

[@santiagoferrari1973]

@@TOMVUTHEPIMP alcohol does, and not everywhere you can find alcohol free fuel

[@BEFITtingImage]

At 8 minutes, screwing it all the way is way under height kzbin.infoh_f26TS5xPY?si=QbSPXYzxWR7K5bDC

[@RobertAnderson-tt3qg]

E e

[@PowerRepublic]

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