06-07-2022, 07:35 AM | #271 | |
Join Date: Mar 2022
Posts: 257
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Coming from hot rods I know we want to keep the oil sump hot enough to boil the water off, but I’m used to oil temps in the 230-250* range. Of course, I also had massive radiators. Hot oil, and cold coolant. And every time I see someone mention low compression I have to wonder how a bike would handle a *tiny* shot of nitrous lol.
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2022 X-Pro Templar X 250 “Rocinante” 2022 X-Pro Bolt 125cc “Dapple” 2022 Royal Enfield Interceptor 650 “Traveller” 2023 Royal Enfield Classic 350 “Trigger” |
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06-07-2022, 02:03 PM | #272 |
Join Date: Mar 2022
Posts: 257
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Knowledge check-my manual for the Templar got packed up due to my being in the middle of a move.
What does it call for valve clearance specs?
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2022 X-Pro Templar X 250 “Rocinante” 2022 X-Pro Bolt 125cc “Dapple” 2022 Royal Enfield Interceptor 650 “Traveller” 2023 Royal Enfield Classic 350 “Trigger” |
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06-07-2022, 03:48 PM | #273 | |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,683
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But I looked cover to cover, and the procedure/specs are NOT there (nice color wiring diagram though!). We will have to go by Zongshen numbers for the engine. I set my 229cc engines (Zongshen) to 0.05mm-0.07mm Exhaust, and 0.03mm-0.05mm Intake. Maybe shoot for middle of the range until someone finds a specification for the engine. I understand that the exhaust setting is to make sure that there is still some clearance when it gets hot. intake not so much of an issue. |
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06-07-2022, 09:04 PM | #274 |
Join Date: Mar 2022
Posts: 257
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I’ll have to dig through the last 20 pages but Nutcracker came up with some from watching foreign YouTube videos about the bike.
So finally got the Mikuni 28 hooked up. Fit the rubber nipple to the head perfectly. Smaller than the stock unit so easy to get in, but the fuel nipple is substantially larger than the stock one so that took some finessing. Fired it up and after I realized that I had left it on choke (why does it sound like it’s exploding?!) I started tuning per the Mikuni OZ instructional videos. Ho Lee Krap It doesn’t even sound like the same bike. Much, much more presence. Where the stock exhaust was somewhat quiet, tinny and almost whisky, this is full throated and quite a bit louder, much more base. Sounds much more powerful. As for throttle response-orders of magnitude better. Slammed from idle to full throttle and the bike just revs, much faster than stock. There is obviously more air/fuel making it into the bike now. I don’t even have it fully assembled lol. I just threw a foam sock over the intake side of the carb to see if it would start and boy did it. Tomorrow (assuming I’m still here and not blown away to Oz, I’ll put the intake boot and airbox back together and start thoroughly tuning. I understand that carbs require a somewhat longer intake and can’t run well without a velocity stack funneling air into it so I’m sure it’ll run even better…God willing. Also received my 40 tooth sprocket today. Lots to do with this bike but so little time. Edit: Forgot to add, there is one issue-the intake manifold was made to mate to a 50mm OD carburetor, as the stock model is. The VM28 is only 44mm OD. So, I need to add 6mm of shims to make it work lol. I’m currently looking for some 44mm ID rubber hose. Failing that 3mm rubber sheeting. Self adhesive would be great but I can glue it in place, then crank down on the hose clamp over the intake.
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2022 X-Pro Templar X 250 “Rocinante” 2022 X-Pro Bolt 125cc “Dapple” 2022 Royal Enfield Interceptor 650 “Traveller” 2023 Royal Enfield Classic 350 “Trigger” Last edited by Okierider; 06-07-2022 at 09:34 PM. |
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06-07-2022, 11:31 PM | #275 |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,683
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I just reinstalled the OEM YouAll smooth bore PE 28, YUP, it is a polished carb! Bumped stock jets:
Main, 120 to 125 Pilot, 40 to 45. Shimmed the needle with one washer (about 1mm). The needle is held down by a simple pinch released disk. Cool! And the heavy duty carb spring holds that down too. AND, the slide is polished too! I like this stock carb. And the air filter is a large oiled cover-high flow!! I will post photos of the polished smoothbore. Impressive. This whole bike is amazing! I set intake to 0.04mm, exhaust to 0.05mm Both were a little tighter, but had gap. The valve stem contacts on the Zongshen 249cc CB250F have swiveling heads! Last edited by Thumper; 06-08-2022 at 05:56 AM. |
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06-07-2022, 11:38 PM | #276 |
Join Date: Mar 2022
Posts: 107
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Engine warm calls for Intake .06mm Exhaust .08mm.
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06-07-2022, 11:42 PM | #277 | |
Join Date: Mar 2022
Posts: 107
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06-08-2022, 05:59 AM | #278 | |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,683
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I haven't got it all back together yet. |
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06-08-2022, 06:04 AM | #279 | |
Join Date: Mar 2022
Posts: 257
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Interesting note: even my wife noticed. I came in from the garage sure now that my pilot jet (60 from the factory, 200 main) is too large per Mikuni tuning guides, and wifey asks “Are you done? It sounds SO much better!” No dear…tinkering isn’t never done lol
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2022 X-Pro Templar X 250 “Rocinante” 2022 X-Pro Bolt 125cc “Dapple” 2022 Royal Enfield Interceptor 650 “Traveller” 2023 Royal Enfield Classic 350 “Trigger” Last edited by Okierider; 06-08-2022 at 03:01 PM. |
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06-08-2022, 06:00 PM | #280 | |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,683
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But here are a couple of picks of the OEM YouALL carb I took before I put it back on. Here it is after re-install, viewed through the beefy frame stays (really astonishing quality/stiffness). Keep in mind, the bike weighs in at 258lbs, just a little more than a KTM 250. Last edited by Thumper; 06-09-2022 at 09:00 AM. |
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06-08-2022, 07:16 PM | #281 | |
Join Date: Mar 2022
Posts: 257
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I’ve given up on loading them from my iPhone. Took the bike around the yard a few times. Pilot is definitely too large (60). As soon as I get out of the pilot stage, past 1/4 throttle, this thing screams! My 200 main may be a bit rich but damn, it goes. Pulls so damn hard in the midrange I can’t get past 3/4 throttle in 1st or 2nd. I’ll need to get it on the road to check WOT, and all the roads around here are flooded right now lol.
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2022 X-Pro Templar X 250 “Rocinante” 2022 X-Pro Bolt 125cc “Dapple” 2022 Royal Enfield Interceptor 650 “Traveller” 2023 Royal Enfield Classic 350 “Trigger” |
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06-08-2022, 09:00 PM | #282 |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,683
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Pics. I use a Panasonic SLR digital camera, and post them on a photohosting website. Links only.
Test ride after Main, 120 to 125 Pilot, 40 to 45. Shimmed the needle with one washer (about 1mm). No popping on deceleration, or "misfire" midrange anymore. Responsive and flawless! It sounds exactly the same. It just runs better. But I connected it to the OEM big oil soaked air filter intake. Maybe you have more induction sound bypassing the intake filter. No idea how it could sound different? |
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06-09-2022, 12:04 AM | #283 | |
Join Date: Mar 2022
Posts: 107
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06-09-2022, 02:57 AM | #284 | |
Join Date: Mar 2022
Posts: 257
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It’s like 2005 LS1tech forums all over again. I haven’t used one of those in a very long time lol.
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2022 X-Pro Templar X 250 “Rocinante” 2022 X-Pro Bolt 125cc “Dapple” 2022 Royal Enfield Interceptor 650 “Traveller” 2023 Royal Enfield Classic 350 “Trigger” |
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06-09-2022, 05:07 AM | #285 | |
Join Date: Feb 2021
Location: Kansas City
Posts: 2,683
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Quote:
The jets were from one of two sources. The pilot jets were from a kit I got from Amazon, and the mains were from AliExpress or Alibaba. I will find the Amazon link. Alibaba links always change. Maybe I can find it. UPDATE. The main jets in the kit from Amazon also fit...The jet kit is described as this at amazon: Supermotorparts 10Pcs Carburetor Main Jets kit & 10Pcs Slow Pilot Jets for PWK Keihin OKO CVK PWM $12 Last edited by Thumper; 06-09-2022 at 08:05 AM. |
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