Chinese Stihl 070 knockoff

I have enlarged and cleaned up the exhaust port on the old craftsman that I have and I have started the research to do the same on the 359 I have. In addition I have matched the exhaust ports, and my turbocharger in my 2005 Saab92x when I rebuilt the engine 3 years ago. So yes understand the principals behind porting a internal combustion. Engine.

 

Relax I'm not nor was attacking you. I accept you opinions and feelings as your own. I used your post to illustrate a point nothing more

Sorry if you saw it that way, that was not my intent

 

What did you end up with for exhaust and intake on the old poulan?
Did it respond with gains for you?

 

Awsome, first hand experience good or bad was what I asked for
Not happy fuzzys only

Have now idea on what it ended up with had no reason to keep the measurements , but it now runs better that it ever did for my father. I do all the work on a 5inch thick chunk of cast iron and only work in 5min bursts to keep the parts from changing due to heating up

 

No sir!!!
You used my observations of 3 years of running honda clones to try and prove a point in a thread I was not having any input in..
About 070 knock offs???

 

Again not my intention to upset you sry

 

I hate Chinese copies, nothing but the real deal!

 

I wanted experience good or bad, funny thing is the members with the negative opinion have no experience with the item in question. You have experience with Chinese saws, your opinion isn't 100% positive, but you pointedout things to look for when buying,not just calling all Chinese made goods turds.. Lol

 

I've bought some china knock off (aftermarket) cylinders on ebay and they suck.

There you go, opinion backed up by facts.

 

Negative attitude, because I see the flaws in any potential savings a "cheap" saw might bring?

To me, its a waste of money to buy a chinese clone. They (usually) are made of inferior materials and don't meet minimum safety standards, see this video of a clone failing standard tests :

Its "penny wise, pound foolish" because a saw from any of the majors, be it Stihl, Husky, Solo, Echo, Dolmar will be a 10 or 15 year purchase for most on here. Deprecate that $500 Husky saw purchase over 15 years. How many years out of a chiclone? All the "free" bars and chains in the world made out of chinese mystery metal wont make up for that. Been burned several times with chinese small engines and parts. They arent worth it, might as well have burned the money.

Ignoring all the above, frankly I dont want to support China unless I have no other options. They show no regard to our copyrights and patents let alone what they do to their own people. Its our own greed, buying this crap in the west, that is helping china to become a superpower that will one day be the primary threat to our own well being.

 

How can you comments to on the material that was used in the casting? Has the casting had a material failure? Seems like they were using a different mold for the casting itself or it wasn't cleaned up properly.
The comment about the rings is what I'm looking for. If I can buy a 070 replace the rings port the exhaust, returned the carb and have a hard running saw for 1/8 - 1/3 the price of a new 100+ cc saw that is a win in my book.

 

Now I have a question for you...

Why would you want a genuine 070, let alone a knock off one?
Sure, they're cheap, but they're slow as hell!!!
There are numerous other offerings out there that would serve your needs way better...
Or is it not really about that at all?

 

Uncle Augie ,in the video the clone 070 sounded healthy with a poorly prepped chain. What
I've read is they usually need a better quality carb for dependability.

I do have a idea though, how about you spend the time and money to do the testing and bring the feedback to us so we can be educated on the subject.

How is the E85 testing working out in your saw?

 

You think they're cast? Or chrome?