15 HP out of your 200cc china clone

[Badot]

I came across this today and thought it may be of interest to some people for the sake of mods. Also shows the stock powerband of these engines to an extent.

http://personalpages.tds.net/~nascarfans/TripleDouble.htm

 

[Bluethunder3320]

i didnt know filter and exhaust could get 8.5hp..... sweet.

annoying text font though!

 

[devino246]

Someone must suck at HTML.

 

[the-cyborg]

I'm trying to figure out why he would opt to use a Walbro PZ-22
instead of a Mikuni or Tillotson.

The Walbro honestly is only slightly better than a modded stock carb.

Mikuni and Tillotson are much more responsive and you can walk into most any cycle shop and get replacement/ performance parts.

 

[Doc Sprocket]

Very interesting and informative. But also pretty specific, in terms of demographics. This info would be much more useful to a racing guy than myself, as I personally cannot justify blowing $500+ on a single cylinder industrial engine to power my toys when I can invest that (or less) in a bike engine that will not only outperform the clone, but also includes a clutch and multi-speed transmission.

 

[karl]

$530.28

I can get a brand new liftan 15hp engine for less....

 

[devino246]

I can get a brand new liftan 15hp engine for less....

But weighs a good bit more, which is pretty important if your racing.

 

[karl]

But weighs a good bit more, which is pretty important if your racing.

True

 

[redsox985]

But you also gain a gearbox. Which IMO, a proper gearbox can do more than a better power/weight ratio.

 

[machinist@large]

But you also gain a gearbox. Which IMO, a proper gearbox can do more than a better power/weight ratio.

If you're racing in a specific class, gear boxes, larger displacement, etc. might not be allowed.

Definitely niche info; I'll probably never need it. But, I'll bet that there are more than a few people reading this site that will make use of it.

 

[r_chez_08]

Cool, time to put a nicer exhaust and filter on my bike and kart!

 

[oldbikerarlo]

I liked the Dyno readings at each stage of mod. Who knows if it is actual HP. but I can see an increase or decrease at HP vs RPM.
He also did the mods in an order that a person on a weekly or monthly budget, could add perfomance parts, without backing up in power gains.
I don't plan on ever raceing, but I do like Hot Rodding a small engine, one piece at a time.

 

[redsox985]

I just went through and read his whole write up and noticed, not only is $530 a lot, for me at least, for a new engine, but also he has one decked out shop at his disposal that I think few of us would have access to.