Keihin PWK 30 or Accelerator pump Carb?

Rcsup1 · 08-29-2018, 03:40 PM

Hi All,

So I'm thinking of replacing my vm26 clone. I have come across these two carbs on the forums here.

1. Keihin PWK 30 Carb-
http://chinariders.net/showthread.php?t=21329

2. Accelerator pump Carburetor-
http://www.chinariders.net/showthread.php?t=21082

Both seem to have great reviews on threads above.

Which one is better or would be your preference?
What would you say are the pros and cons to each?

Thanks,

Roy

**JerryHawk250** · 08-29-2018, 03:45 PM

I'm assuming this is for your Apollo 250? On a stock engine the Accelerator pump Carburetor would be the best option.

The Keihin PWK 30 would be good if you plan on porting the head and installing a freer flowing exhaust.

Rcsup1 · 08-29-2018, 04:13 PM

Yes for my Apollo 250

Mods here http://chinariders.net/showthread.php?t=21266

Engine mods so far:
Airbox delete with K&N cone filter
Exhaust catalytic has been removed
Aftermarket CDI with the timing advance
Iridium plug.

--Roy

Douglass · 08-29-2018, 05:33 PM

I have a brand new never installed pump carb with a throttle cable if you are interested. I purchased it with the intent to replace the Mikuni, but I am very happy with how the bike runs, and don't want to mess with it.

Rcsup1 · 08-31-2018, 01:09 PM

I did a bit more research on the pumper carb and have concerns about the non standard jets and the issues everyone has had sourcing jets. Also the inconsistency of what carb "model" you get.

Thoughts?

http://www.chinariders.net/showthrea...t=lever&page=2

Weldangrind · 09-01-2018, 12:36 PM

This is the pumper I bought, and it has genuine Keihin jets. Don't know if they've changed since then. https://www.ebay.com/itm/PZ30-Accele...e/263422409914

Rcsup1 · 09-02-2018, 12:49 AM

Thanks Weldangrind I pulled the trigger on it I'll let you know when I receive it!

Its_not_a_honda · 09-02-2018, 08:21 AM

Quote:

Originally Posted by Rcsup1

Thanks Weldangrind I pulled the trigger on it I'll let you know when I receive it!

FYI...

Make sure you get a throttle cable too. It has to have 2 cables to operate the carb. It starts out as one at the twist grip and splits into 2 under the gas tank.

Edit: Never mind. Just saw that it comes with cable. lol

Rcsup1 · 09-18-2018, 06:57 PM

Weldangrind

Looks like your link was a winner. Here is what I received. The spare jets do not have any numbering that I can see. I have yet to take it a part and see whats inside.

The mikuni I have currently runs a 20 pilot (3/4 turns out on the pilot screw) I have the needle on the richest setting and a 115 main. The bike is running perfect with this set-up. What Keihin jets do you recommend I get?

I also do not see anything to convert to a manual choke.

Cravin01 · 09-18-2018, 09:36 PM

Quote:

Originally Posted by Rcsup1

I did a bit more research on the pumper carb and have concerns about the non standard jets and the issues everyone has had sourcing jets. Also the inconsistency of what carb "model" you get.

Thoughts?

http://www.chinariders.net/showthrea...t=lever&page=2

I just got these in, they are shorter but the thread in just fine, the only problem i have is I really don't need to go up on my pilot yet to test it, I will if i add a cone filter I think.

https://www.ebay.com/itm/Modified-Wi...72.m2749.l2649

I'll put it in my next video so everyone can see them. You can find them also on AliExpress.

Rcsup1 · 09-19-2018, 12:21 PM

Thanks Cravin01 but i don't think those will fit. It's hard to tell in the pic but this carb uses
what appear to be exact copies of Keihin style jets. I'll try to take some better pics.

I'm really looking for the size recommendations based on my Mikuni jet sizes.

Cravin01 · 09-19-2018, 01:28 PM

They do fit but I have not put them in the carb on my bike. I put them in my old PZ30 that came with my bike last night and they screwed right in but are shorter.

Weldangrind · 10-03-2018, 11:59 PM

Rcsup, thanks for detailing what you received. Like you, I didn't get anything to convert it to a manual choke. I'm gonna see if I have an old Keihin around that can donate the choke parts.
I don't have a specific recommendation on jets for you, but Keihin jets are numbered about 10% higher than Mikuni. IOW, a 100 Mikuni is a 110 Keihin. FWIW, Mikuni jets are tied to millimetres; a 100 jet is 1.00mm, a 110 jet is 1.10mm, etc.

08-29-2018, 03:40 PM	#1
Rcsup1 Join Date: Jan 2018 Location: Ft lauderdale Posts: 42	Keihin PWK 30 or Accelerator pump Carb? Hi All, So I'm thinking of replacing my vm26 clone. I have come across these two carbs on the forums here. 1. Keihin PWK 30 Carb- http://chinariders.net/showthread.php?t=21329 2. Accelerator pump Carburetor- http://www.chinariders.net/showthread.php?t=21082 Both seem to have great reviews on threads above. Which one is better or would be your preference? What would you say are the pros and cons to each? Thanks, Roy
	0

08-29-2018, 03:45 PM	#2
JerryHawk250 Moderator Join Date: Oct 2016 Location: Houma, La. Posts: 11,561	I'm assuming this is for your Apollo 250? On a stock engine the Accelerator pump Carburetor would be the best option. The Keihin PWK 30 would be good if you plan on porting the head and installing a freer flowing exhaust. __________________ 2023 Lifan Lycan 250 Chopper 2023 Venom Evader 2022 Lifan KPX250 2020 Kawasaki Vulcan S 2004 Honda ST 1300 2016 Black Hawk 250 (sold) Keihin PE30 carb,125 main,38 slow.Pod filter,ported & decked head 10:1 CR,Direct Ignition Coil,15/40Sprockets,NGK DPR8EIX-9,De-Cat,Dual Oil Cooler,Digital Cluster 2016 Cazador180 XL 2014 Coolster150 JerryHawk250.com My YouTube Channel
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09-01-2018, 12:36 PM	#6
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	This is the pumper I bought, and it has genuine Keihin jets. Don't know if they've changed since then. https://www.ebay.com/itm/PZ30-Accele...e/263422409914 __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
	1

09-19-2018, 01:28 PM	#12
Cravin01 Join Date: Jan 2018 Location: Forney Texas Posts: 498	They do fit but I have not put them in the carb on my bike. I put them in my old PZ30 that came with my bike last night and they screwed right in but are shorter. __________________ Visit me on YouTube at "Project Next"! https://www.youtube.com/channel/UC6KTCi2GVbfRDv-2XCqHhsg?view_as=subscriber 2017 Bashan Storm Keihen PZ30 Pumper Carb,115 main jet,35 pilot jet, gutted factory exhaust, Sambo Digital Speedometer,LED blinkers, H4 headlight,D.I.D X-ring chain 428,17/42 sprockets,UNI cone filter.
	1

10-03-2018, 11:59 PM	#13
Weldangrind Join Date: Mar 2009 Location: Sardis, BC, Canada Posts: 25,977	Rcsup, thanks for detailing what you received. Like you, I didn't get anything to convert it to a manual choke. I'm gonna see if I have an old Keihin around that can donate the choke parts. I don't have a specific recommendation on jets for you, but Keihin jets are numbered about 10% higher than Mikuni. IOW, a 100 Mikuni is a 110 Keihin. FWIW, Mikuni jets are tied to millimetres; a 100 jet is 1.00mm, a 110 jet is 1.10mm, etc. __________________ Weldangrind "I figure I'm well-prepared for coping with a bike that comes from the factory with unresolved issues and that rewards the self-reliant owner." - Buccaneer
	1

08-29-2018, 04:13 PM	#3
Rcsup1 Join Date: Jan 2018 Location: Ft lauderdale Posts: 42	Yes for my Apollo 250 Mods here http://chinariders.net/showthread.php?t=21266 Engine mods so far: Airbox delete with K&N cone filter Exhaust catalytic has been removed Aftermarket CDI with the timing advance Iridium plug. --Roy
	0

08-29-2018, 05:33 PM	#4
Douglass Join Date: Aug 2017 Location: Bay Area, CA Posts: 375	I have a brand new never installed pump carb with a throttle cable if you are interested. I purchased it with the intent to replace the Mikuni, but I am very happy with how the bike runs, and don't want to mess with it.
	1

08-31-2018, 01:09 PM	#5
Rcsup1 Join Date: Jan 2018 Location: Ft lauderdale Posts: 42	I did a bit more research on the pumper carb and have concerns about the non standard jets and the issues everyone has had sourcing jets. Also the inconsistency of what carb "model" you get. Thoughts? http://www.chinariders.net/showthrea...t=lever&page=2
	0

09-02-2018, 12:49 AM	#7
Rcsup1 Join Date: Jan 2018 Location: Ft lauderdale Posts: 42	Thanks Weldangrind I pulled the trigger on it I'll let you know when I receive it!
	1

09-19-2018, 12:21 PM	#11
Rcsup1 Join Date: Jan 2018 Location: Ft lauderdale Posts: 42	Thanks Cravin01 but i don't think those will fit. It's hard to tell in the pic but this carb uses what appear to be exact copies of Keihin style jets. I'll try to take some better pics. I'm really looking for the size recommendations based on my Mikuni jet sizes.
	0