Titan R3 vs. GXH50 and a couple others...

[conradcliff]

Ok, so I did some searching and found some info on these engines:

1) Engine type: horizontal, single-cylinder, 2-stroke, air-cooled
2) Piston displacement: 40.2cc
3) Bore x stroke: 40 x 32 mm
4) Max. power: 1.6KW/7,000rpm
5) Max. torque: 2.3N.M/6,000rpm
6) Min. idle rotate speed: 2600rpm
7) Compression ratio: 8.3:1
8) Ignition: CDI
9) Spark plug: NGK MBR6A/L7T
10) Carburetor: diaphragm
11) Air filter: polyurethane foam
12) Start mode: pull start
13) Clutch style: centrifugal automatic
14) Average fuel consumption: 680g/kWh
15) Dimensions: 240 x 220 x 150mm
16) N.W: 3.2kg

Looks like it power rating isn't quite as good as the GHX50 (this one has a little less torque and at a higher RPM) which is the engine I'm looking to get, but for a hundred bucks and free shipping at this site it seems like a pretty good deal if they hold up ok..Also, this site claims that their engine is a slightly different one than the average look alike saying that theirs revs to a sustained 10K RPMs :-/

Anyway, I guess the real question is whether or not they will hold up ok..if anyone has any usage info on one of these I would really like to hear about it. Longevity is a very important factor for me so before truly considering this one I would have to know it would hold up.

Thanks in advance for any help, you guys are great!

 

[astring]

I have 3 bike engines.
A cheap Chinese 4 stroke
a Robin Subaru eho35
a and a Honda gx35

The Chinese one is pretty crappy, way below the level of the other 2.
The Robin Subaru is really really solid.
The Honda is significantly better than the Chinese one, but nowhere near the Robin Subaru.
I'd say that the Honda is the way to go.
If robin Subaru made a 50 cc engine I would be all over it.

 

[conradcliff]

The Honda is significantly better than the Chinese one, but nowhere near the Robin Subaru.

Thanks for the reply astring, any specifics on how the Honda is less reliable than the Subaru?

 

[astring]

Thanks for the reply astring, any specifics on how the Honda is less reliable than the Subaru?

That RS is a uniquely solid engine. It has that cylinder sleeve for one, but also the Honda is just not built as well, for example a plastic piece of the pull cord recoil housing snapped off with normal use.

 

[conradcliff]

For some reason I was under the impression that the honda had a cast iron cylinder sleeve as well...hmm, that's a bit disappointing.

This post states that the GXH50 does in fact have a cylinder sleeve.

 

[astring]

For some reason I was under the impression that the honda had a cast iron cylinder sleeve as well...hmm, that's a bit disappointing.

This post states that the GXH50 does in fact have a cylinder sleeve.

I had not heard that, it may well be true. someone will confirm it if it is true. It is not mentioned here (on the specs page at Honda):
http://www.honda.ca/enginesEng/models/GXH/GX50/specifications.htm

Don't get me wrong. I'd love to have the power of a GX50.

 

[astring]

http://www.smallenginewarehouse.com...ft, Overhead Valve LOS 7000 RPM, No Fuel Tank

here it says it has the lined cylinder. I guess it does

 

[conradcliff]

I'm happy now..my engine is going to rock!

 

[Partsboy22]

All Honda GX series engines have a cast iron sleeve. If you want to see the difference between the engines from china and the ones from japan, take both apart, and check the tolerances. You get what you pay for. Pay the extra and get a Honda. Nothing wrong with the RS that I know of.

 

[giannis]

I think that the 2nd would be very good for tuning , but it has enough power from itself !