Hello i'm new to nitro engines and i have a question i just got a used T-MAXX that has a .15 motor not to sound too dum but what is the diff. between that one and a ..25 i heard there almost the same

[b]Pro:

We don't allow "Nitro" engines here, "Glow" engines are fine.

Take it to the R/C Car engine forum, better answers for you there.

But addressing your question - any 0.15 engine is only 60% os the size of any 0.25 engine. And the 0.25 engine will usually be about 60-70% more powerful than the 0,15 engine.

Bill.

bill sorry it looks like i put it in the wroung area but thank for the answer
Mark

[b]Mark:

No big deal, it's just that none of these engines require nitro to run - "Nitro" is not a correct trem for describing them.

Using the word "Nitro" was a cheap marketing trick to attract kids to R/C cars, it still irritates most modellers other than the car freaks. And maybe some R/C car hobbyists are irked by it too.

Bill.

understand when i think of nitro i think of top fuel or funny cars drasters my self guess i just a old gear head

Bill
I think he had the decimal in the wrong place and the .15 engine is the same displacement as the 2.5 engine. .15 cubic inch is the same displacement as a 2.5 cubic centimeters.

[b]Paul:

Could well be.

Bill.

Before my irvines and MVVS became diesel they ran fine on FAI fuel, (hot plug) martin

engine size isn't a very good indicator of power either, especially in the car/truck ranges of .12 - .28 or so. There are some expensive .12's that have as much or more power then a cheap .18! (price might be a more accurate comparison then size actually!)

i did have the decimal in the wroung spot Sorry

[b]Mark:

In that case, your 0.15 cid engine is the same as your 2.5 cc angine, as pointed out by Paul in the sixth post.

Bill.

They are the same size, but configured differently. The 15 is side exhaust and older than the 2.5 which is rear exhaust current and has more power.