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4 Stroke Bicycle Engines & Kits 4 stroke engine kits are great if you want reliability or do not want to mix your oil and gas. Learn from each other how to get the most out of your 4 stroke bicycle engine

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  #1  
Old 01-08-2012, 01:47 PM
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Default Anyone know the difference Honda ghx50 and gxh50qxa

Can't find anything showing the difference between these two Honda 49cc engines but lots of threads for one or the other. Just want to make sure that I get the right Honda 4 stroke engine for my spring build....Dan
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Old 01-09-2012, 10:59 AM
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Default Re: Anyone know the difference Honda ghx50 and gxh50qxa

I forgot where I read this, but the "QHA" means the engine has a low oil sensor and you get to pay for it whether you want it or not!
GXH50s have had this for almost 3 years now. Any GXH50 should work for your build.
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Howto: 49cc GXH50/HS/Titan valve adjustment

Pedaling harder is the cheapest speed upgrade
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Old 01-09-2012, 11:29 AM
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Default Re: Anyone know the difference Honda ghx50 and gxh50qxa

Both have a Low Oil shutdown.

ghx50 2.1HP, 49.4cc, 12.1#, Height 13.0", Length 8.9", Width 10.8"
http://engines.honda.com/models/model-detail/gxh50

gxh50qxa 2.5HP, 49.4cc 13#, Height: 13.9" Depth (Less Shaft): 7.7" Width: 10.8"
http://www.kit-master.com/web/index....&Itemid=100001

Funny what you can find doing a GOOGLE search....
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Last edited by Al.Fisherman; 01-09-2012 at 11:32 AM.
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Old 01-09-2012, 12:36 PM
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Default Re: Anyone know the difference Honda ghx50 and gxh50qxa

Quote:
Originally Posted by Al.Fisherman View Post
Both have a Low Oil shutdown.

ghx50 2.1HP, 49.4cc, 12.1#, Height 13.0", Length 8.9", Width 10.8"
Honda Engines - Small Engine Models, Manuals, Parts, & Resources

gxh50qxa 2.5HP, 49.4cc 13#, Height: 13.9" Depth (Less Shaft): 7.7" Width: 10.8"
GXH50QXA Honda Horizontal Gas Engine 2.5 HP OHV

Funny what you can find doing a GOOGLE search....
No, Ron. Not every GXH50 has a low oil shutdown, they started that a couple years ago. Your links have no relevant information for the OP's question.
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Howto: 49cc GXH50/HS/Titan valve adjustment

Pedaling harder is the cheapest speed upgrade

Last edited by The_Aleman; 01-09-2012 at 04:08 PM. Reason: removed extra rudeness
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  #5  
Old 01-09-2012, 01:22 PM
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Default Re: Anyone know the difference Honda ghx50 and gxh50qxa

Quote:
Originally Posted by birdmannn101 View Post
Can't find anything showing the difference between these two Honda 49cc engines but lots of threads for one or the other. Just want to make sure that I get the right Honda 4 stroke engine for my spring build....Dan
This is the right Honda 50 to buy cause it's the best deal!

If you can find a better deal please let us know. All other sellers
want a lot more for the Honda 50. The motors are all the same specs
internally.
Small Engine Warehouse: GXH50QXA - Honda Engine 2.5hp Horizontal 5/8"x1-5/8" Keyed Shaft, Overhead valve LOS 7000 RPM

I think the different letter codes refer to whether the motor
comes with a fuel tank or exhaust, but no one seems to be
selling the bare engine anymore.

Low oil sensors are easily disconnected.
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Old 01-09-2012, 01:35 PM
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Default Re: Anyone know the difference Honda ghx50 and gxh50qxa

Quote:
Originally Posted by The_Aleman View Post
No, Ron. Not every GXH50 has a low oil shutdown, they started that a couple years ago. Your links have no relevant information for the OP's question.

Maybe you should stick to the 2-stroke section. I've already watched you strike out on 4-strokes.
Yes, that may be so (no oil shutdown) years ago, but he is looking to buy one now, not a engine a couple of years old, at least he didn't mention buying a used engine.

Latest information I can find...http://engines.honda.com/models/model-detail/gxh50
Oil Alert
GX series, V-twin series, iGX series
Honda’s Oil Alert system helps to prevent engine seizure due to a low oil condition.
The system consists of an oil level sensor inside the crankcase. When the oil reaches a level that is too low for safe operation, the engine warns you or stops automatically.
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Last edited by Al.Fisherman; 01-09-2012 at 02:08 PM.
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  #7  
Old 01-09-2012, 03:48 PM
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Default Re: Anyone know the difference Honda ghx50 and gxh50qxa

Let's settle this right now: GXH50 all work the same, some just come with more or less equipment on them.
The last 3 letters in the model are variants. Last 3 letters may or may not be listed. This answers OP's question.

The low oil sensor used to be an option, but about 3 years ago it became standard and the engine price went up.
The days of $200 new GXH50s are long gone
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Howto: 49cc GXH50/HS/Titan valve adjustment

Pedaling harder is the cheapest speed upgrade
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  #8  
Old 01-10-2012, 09:33 AM
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Default Re: Anyone know the difference Honda ghx50 and gxh50qxa

Quote:
Originally Posted by Al.Fisherman View Post
Both have a Low Oil shutdown.

ghx50 2.1HP, 49.4cc, 12.1#, Height 13.0", Length 8.9", Width 10.8"
Honda Engines - Small Engine Models, Manuals, Parts, & Resources

gxh50qxa 2.5HP, 49.4cc 13#, Height: 13.9" Depth (Less Shaft): 7.7" Width: 10.8"
GXH50QXA Honda Horizontal Gas Engine 2.5 HP OHV

Funny what you can find doing a GOOGLE search....
Thanks for all the input. So, this answered my question. The QXA has a little more HP than the old 50 and is .9 inches higher which should work on a cruiser frame. Planning to use the Q-matic or 4GT with $20 upgrades. Going to try the carb on the engine with the throttle kit first.

Thanks again for all your help....Dan
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  #9  
Old 01-11-2012, 12:51 AM
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Default Re: Anyone know the difference Honda ghx50 and gxh50qxa

The differences are in shaft sizes. Length, od, for various apps.
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  #10  
Old 01-11-2012, 08:41 AM
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Default Re: Anyone know the difference Honda ghx50 and gxh50qxa

Some have 3/4 shafts, tapered, 5/8ths etc. the letters after the gxh 50 tell you exactly what it is.
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