Tecumseh 2 stroke questions.

[HarryHyde]

Hi everyone and thanks in advance for your help.

I would like to know if it is feasible to upgrade a Tecumseh TH139/ HSK 850 to an HSK 870?

If I understand correctly, this is a 2 stroke engine of 139 cc, the 850 model rated at 5 hp and the 870 at 7 hp.

Is it a matter of just turning the governor up (or removing it) to obtain more RPM or is there different carbs, exhaust pipes, etc?

Or perhaps someone has a 870 they would sell.

I can buy an 850 from Small Engine Warehouse but would like more than 5 hp.

Alternatively, is there other engines of at least 7 hp weighing less than 25 lbs?

 

[Oldschool]

I don't know what your talking about.

Is this a UNIBLOCK series engine or the older Lauson 2 stroke.

Pictures help here.

Lost of things you can do to get more power from them. Few things you can do to keep them from blowing up.

Better engines The forged steel Rod Clinton, the Westbends and tried and true MAC's....