What size engine would fit in a 1/10 Hsp Backwash?

[Akedemy]

I have a Hsp backwash buggy 1/10 scale that packs a .18 nitro engine. I would like to know what limitations of wngine size I have when looking for a new engine. Thanks

[Nitroholic]

Your buggy takes a small block motor, so really....18 is the limit.

 

Most smallblock motors have a side exit exhaust,. The larger nitro motors use a different mount, and a rear exit exhaust.

So basically, the larger motors would have an exhaust exiting where your rear suspension arms are....assuming it would actually fit, as the crankcases tend to be a little larger.

 

What you can get is a better quality motor that should give you a bit more power. Just stick to motors of .15-.18 size with side exit exhausts. Also make sure you get one with the right crankshaft end, where the flywheel fits.

[Akedemy]

Ah ok thanks, I'm decently new to the hobby so just had a question about the engines, also, if I were to get a rear exit exhaust .18 motor, would it fit in the engine bay? Just looking for an upgrade.

[Nitroholic]

Probably not....your car layout is not really designed for a rear exit exhaust. The motor sits too close to the rear suspension.

 

Whilst nothing is impossible given the right tools and know-how....you would need to replace the pipe you have as a minimum. Imagine the exhaust coming out the back of the motor....and look to see how it would have to route to attach to the main part of your exhaust.  Then consider how the suspension arms have to move at the back. The exhaust also has to loop far enough out to clear a pullstart. And when your car is driving...all these things must not be hitting each other. Personally...I would stick with a side exit exhaust.