Xpro Storm DLX 150 Review

[ProDigit]

A 40 pilot is way too rich for a 150, even at sea level. A 38 would be fine at sea level.
I'm at sea level, and currently running a 35 pilot and a 110 main, but it's still a bit lean.
This week I'll be swapping out the 110 main jet for a 115.

I did add about 2.5 turns on the AF screw, to get it to idle better when cold.

A lean idle is no problem, so long the bike starts from cold.
Once warms up, the bike should hold idle fine.
The pops on decel are from a lean idle jet, but usually are harmless. Can be avoided by opening the throttle a tiny bit, or dialing in some more fuel on the AF screw.
Aside from the idle (or pilot) jet, there is the AF screw (jet), and a bit of the main jet helping out the pilot. The higher the idle, the more of the main jet you dial in, and the richer it'll idle.

[Dusman]

Yep, agreed. Unfortunately, my OEM YouALL carb’s A/F screw is sealed with a what appears to be a welch plug and it doesn’t seem that I can notch it out and/or unscrew it out. I can get the “sealed” carb bowl screws off by notching them with my Dremel, but I just wanted to throw the Mikuni VM26 on and see what happened. I definitely agree that a 40 pilot is too rich. It seems that given my elevation, a 38 pilot jet would be just about right and/or what you’ve already noted with the A/F screw adjustment. I’d actually prefer to leave the stock carb on and just adjust it as it ran pretty decent out of the box. I’m just not crazy about the fact that the two piece pilot jet seems to be a weirdo proprietary thing that this OEM YouAll carb has. I need to take it out and see if I could make an OEM PZ27 pilot work via measuring the two-piece OEM YouAll pilot jet. I’ll report back later in the week if I think I can source a one-piece pilot jet from jetsrus.com or from another source. Thanks for your input!

[ProDigit]

I wouldn't buy any expensive carburetor, but go for the PZ or VM equivalent of your bike.
You could drill out the AF screw plug with a wood screw, or a drill.
But I wouldn't even begin to bother about it.
A PZ27 (with mounting flange) or a VM27 without mounting flange, cost about $20, and come with a pod airfilter and fuel filter.
All you'll need is a $10 jetkit, to jet up the main jet. The 95 main jet is too lean everywhere but on the peak of mount Everest.

[Mumen Rider]

It seems as if the muffler is also doubling as a catalytic converter, I pulled mine off this morning and you can see the honey comb material inside of it. Take note that the slip joint is an exhaust leak unless you seal it up with high temperature RTV. If you pull yours off you will see the black soot where it's leaking.

[Dusman]

Thanks! I’ve got enough old carbs laying around that are in good shape, everything from PZ27s to VM22s to choose from. I definitely don’t need to buy one. I would like to try to see if I can source jets for this OEM YouAll PZ27 though just in case someone else on here would like to try to re-jet the OEM carb. Thanks for the input; it’s much appreciated!

[ProDigit]

Originally Posted by Dusman

Thanks! I’ve got enough old carbs laying around that are in good shape, everything from PZ27s to VM22s to choose from. I definitely don’t need to buy one. I would like to try to see if I can source jets for this OEM YouAll PZ27 though just in case someone else on here would like to try to re-jet the OEM carb. Thanks for the input; it’s much appreciated!

I have rejetted the OEM PZ carburetor, they use jets for an OKO, CVK carburetor. The pz carburetor from Amazon is nearly identical to the OEM one, with the exception of there not being a restriction on the removing of the float bowl bolts, or AF screw.

The OEM carburetor in my case had a 40 pilot jet, while the Amazon PZ27 has a 35. The OEM has silver colored jets with no data on it, the Amazon one has jet sizes printed on it.

The OEM one doesn't have an adjustable AF screw (no tip on the screw, so it's presumed to be closed all the time), while the Amazon one has a tip on the AF screw allowing it to adjust the fuel flow.
On the OEM one it just dumps fuel as soon as the screw is opened, and causes high idle.

[Mumen Rider]

The rear brake felt weak so I took the time to bleed it this morning, the brake fluid was clear but it did have air in the line. I decided to bleed the front too while I am at it and the fluid was a pale yellow color. I do have to say that the quality of these brake master cylinders are better than the BMS 250 Enduro that I also own.

[J4Fun]

Originally Posted by Mumen Rider

The rear brake felt weak so I took the time to bleed it this morning, the brake fluid was clear but it did have air in the line. I decided to bleed the front too while I am at it and the fluid was a pale yellow color. I do have to say that the quality of these brake master cylinders are better than the BMS 250 Enduro that I also own.

Sounds like a good idea, thanks for reminding us!

[Dusman]

I also re-jetted the OEM YouAll PZ27 carb last night. I went with a 100 main and 38 pilot and it worked perfectly for my elevation (@ 850-1000 ft above sea level).

I took out the float bowl “sealed” screws (that was fun…not) and indeed OKO, CVK/PZ27 jets work just fine in the OEM carb; both pilot and main jets. Here’s a link from jetsrus.com for the measurements if anyone wants to look at this so that they can order the jets on Amazon:

https://jetsrus.com/carburetor/carb_...arb_parts.html

I already had a bag of the appropriate type of Keihin pilot and main jets from Amazon, but the link is now dead, so I’ll just put the measurements below:

Main jet:
OVERALL LENGTH = 8mm
HEAD DIAMETER = 6mm
THREAD DIAMETER = 4.9

Pilot jet:
OVERALL LENGTH = 28mm
THREAD DIAMETER = 5.9mm
HEAD DIAMETER = 4.9mm

I did see on various Amazon links that the measurements vary just slightly from what I have listed above from jetsrus (i.e., head diameters of 5.0 vs. 4.9mm per jetsrus specs), so just take note of those little details. I found that for my purposes, it didn’t matter as the Amazon PZ27 jet kit that I have fits just fine in the OEM YouAll Storm 150 carb.

[Dusman]

"The OEM carburetor in my case had a 40 pilot jet, while the Amazon PZ27 has a 35. The OEM has silver colored jets with no data on it, the Amazon one has jet sizes printed on it.”

Interesting. My OEM jets were the typical gold/brass colored jets and they *did* have the jet size listed on them (95 main/35 pilot). It’s interesting how there can be little variations like this in our bikes.

[ProDigit]

May be model years,
Also, I have the Vader 150, and I presume engine and transmission wise it's nearly an identical bike to the storm 150 (the chassis being obviously completely different).

Most of these bike manufacturers use the same pit bike engine in anything from a Grom clone, to a dirt bike, to a racing bike.

[Dusman]

This past Saturday and Sunday I had the opportunity to really put the bike through its paces….at least for an older guy with psoriatic arthritis. I rode primarily off road a total of @ 50 miles for both days, and after all the little adjustments I’ve done (carb, RK natural chain, rear shock pre-load adjustment, 16t countersprocket), I was able to keep up with my nephews on their bikes fairly well with trail riding (KLX140; Yamaha YZ125x). This little bike definitely is a load of fun and a great value for the $. I will most certainly have to get the seat re-upholstered as it starts to become uncomfortable to sit on, even with road riding, for greater than 15-20 minutes of riding time. The next step will be to get some wraparound handguards along with some Pro-Taper handlebars. The OEM bars flex a little too much for my liking, and they don’t work with standard wraparound handguards, as Mike Festiva demonstrated in his set-up video for this bike.

[tknj99]

I have these installed.. and with some slight bending of the edges held in a vice you can get them positioned well:

https://www.amazon.com/gp/product/B0...e?ie=UTF8&th=1

[paleh0rse]

Currently (im)patiently waiting for this bike to come back in stock.

What 16T socket are you guys using? Anyone have a link?

[tknj99]

https://www.amazon.com/gp/product/B0...e?ie=UTF8&th=1