The brand new model of GP178 is here! After months of modifying and testing, GP178 is the most powerful engine in its class.

GP178 has fully redesigned stroke, crankcase, cylinder, hub, and Tillotson carburetor.

Mejzlik 31*12 5900

Please refer to the attached file for the testing results.

AWESOME!!!

Weight?

what do you recommend for a 3 blade prop?

Any videos of the engine running?

Are there exhaust options (headers with the normal drops) available?

Sweet!

Ohhhh yeah! Tillotson carb update is unbelievable! Cant imagine what this monster will be like.

Here are some More pictures of the new 178 by Gp. We got it on a stand today and are working on some videos.
The changes that were made made this engine made it one of the smoothest running larger two stroke engines I have ever ran.
The power also is amazing . We have been testing this Tillotson carb for a few months and it is a perfect match for the 178, the low and mid range is super smooth. Thanks Dan,Russ and Rob for your help.

The changes to the cylinders,crankcase,prop hub, reed angle and carburetor has made this engine a smooth running beast.

I tested a 30-13 wide falcon carbon on the stand with only a few ounces of fuel though the engine and was amazed amount thrust of prop rip on the ground .

I will be posting videos later in the week and get the weight and some rpm numbers as well.

Gp engine has more releases coming soon, thanks to the factory for hard work put into this engine...

Oh DANG!! I've got a big new project with that sucker's name on it...

Originally Posted by supatimhanstine

Oh DANG!! I've got a big new project with that sucker's name on it...

I missed getting the little brother this week I will get one next time, but what you have I'm very excited to see

How much does this engine weigh?

Originally Posted by Bill Vargas

How much does this engine weigh?

It comes in a little heavier than the 176, I will get you guys the exact weight later this week.

Most powerful engine in it's class - are we talking the 170cc class ?
Where are the manufactures figures to back this claim ?

Originally Posted by rooman

Most powerful engine in it's class - are we talking the 170cc class ?
Where are the manufactures figures to back this claim ?

agree!
What defines a class these days anyway, there are plenty of engines out there with all different CC's!

Originally Posted by hsvman001

agree!
What defines a class these days anyway, there are plenty of engines out there with all different CC's!

I would refer to the same range of weight.