not sure

[nitroboi]

im up grading from a 2.8-28 nitro engine to a 4.6-46 nitro engine would it be ok for a 1/8 scale buggy or not

[Scrogg]

You are going to put a .46 in a buggy? Hope not. The .46s are low RPM, hi torque engines. They are converted Heli engines that were never really intended for car use.
From what I have heard they are a bear to run and do not perform well. Your buggy will be really slow with this in it.
Buggies need .21-.28 engines.
4.6 = .28

[Brushlessboy]

Yeah I think we need to clarify where nitro really wants those decimal points. Then we'll start from there.
As scrogg said, a 4.6 or a .28 is a great size for a buggy, with the .21 race motors being for, well, race, (thats 3.5)
I have a Hong Nor LXone that comes with a Force .32 and it looks impressive but my MBX5R with a Ninja .21 totally EATS it alive.

[nitroboi]

what makes a 21 better than 46 engine theres a big jump in sises

[Brushlessboy]

Nitro! A .46 is more than twice the size of a .21, just look at the numbers, but the trick is to decide what you want from your ride.
You said you had a 1/8 buggy, so forget the .46
I think you are getting confused with a 4.6 (note the decimal point.) That equates to a .28 which is a common size for 1/8 scale rigs. Generally for bashing a .28 is the go. Good low end power and reasonable revs. For racing, usually .21's are selected. Great power for size and USUALLY run higher revs.
You're obviously not a racer so go with a .28 for general use.
Good luck and dont be afraid to ask for more help, there's plenty out there.

[nitroboi]

im geting into racing as soon as they Finnish the track in nz but the only concern i have is that ive already purchased the 4.6 nitro engine and will it do harm to my 1/8 buggy and from what ive heard so far they dish out a lot of power hopefully my 1/8 racing buggy will handel the POWER

[psunitro]

Well. the 4.6 is a .28....so it should handle it ok.Most race .21's put out the power amount of a regular .28

[Scrogg]

It wll be a good engine to learn with, after you race a while you'll want a .21.
The high end mills have just as much torque as the average .28 does, but the .21s make more H.P. and rev a lot higher. Extra RPM's translate into higher top speeds without having to overgear your car. You end up with a set-up that let's you take the holeshot and be able to wind it out on the backstretch, not one or the other.
Biggest thing is 25 % better fuel mileage from a .21 vs. a .28. Pitstops are everything in racing.

[nitroboi]

ono i just had a look at the engine i just brought its not a 4.6 its a .46 engine and thats 7.5 ci thats bigger than a 4.6 nitro engien do u think it will do harm now

[psunitro]

Personally, I would not use this in a 1/8 buggy.

[nitroboi]

Originally Posted by psunitro

Personally, I would not use this in a 1/8 buggy.

can i ask your reason why

[psunitro]

What is the mill intended for? Will it bolt up? Will it physically fit under the body? What pipe will you use with it? Will it all line up as it should? Be it the pipe, carb to servo, or mounts?
I guess if you are just "bashing" and not racing, it could be made to work.

[nitroboi]

true i gees ill just have to find out when i get it ill get back to u and tell how its worked out

[nitroboi]

Originally Posted by psunitro

What is the mill intended for? Will it bolt up? Will it physically fit under the body? What pipe will you use with it? Will it all line up as it should? Be it the pipe, carb to servo, or mounts?
I guess if you are just "bashing" and not racing, it could be made to work.

well u weer right its to big to long and but its ok ill just have to buy another:bo xing::boxi ng: engine