416,426,440 witch 1 for racing nothing else

[ThorR88]

Hey i was wonderig witch would be the best for only racing no trail or anything else, 416 426 or the 440? i need the best for racing help me out...:confused:

[bradley300]

no replacement for displacment, go big or go home baby!:cool:

[ThorR88]

i heard that 440 didnt have all that good acc. someone help me out here witch is the best

[ranger400ex1994]

i am looking into the same thing my self but i thinkg i am goin to try the 426 first then if i am not happy with that then go to 440 but not sure in compresion yet.

[skemp]

Like he said before. Go big or go home. If you want all out power, go 460+cc with all the fix-uns. If you are more budget oriented, a 416 will be just fine with a high compression piston. Done right, they will outrun most 440's. There is little power difference between a 416 bore and a 426 bore with everything else the same.

[muff]

go with a 416 or 426, you can run into many head gasket problems unless you get everything right with a 440

I'd recommend a 11:1 compression piston, FDO heavy duty studs, and hot cam stage 2......or you can buy my complete 426cc motor with these 3 all brand new parts installed for $1200 shipped

if interested give me a call 860-917-9860

[crashinmatt]

well depends on how much u wanna spend and how u want to motor to run. if ur more of a rider who likes to lug the motor around corners, then i would say a 440 or 440 stroker. a 440 stroker will cost ya a little more, but im my opinion worth it. if u like to rev the motor more, then i would definitely say 426. which s what i have, and hear a lot of people run with good success. either way ur gonna wanna port the head and get a good exhaust, and all them goodies. plus look into buyin a good carb. my motor is also for sale, look in the parts for sale forum.

[ThorR88]

so i take it a 426 is the way to go for racing becuase i rev out my gears..thanks..any other suggestions?

[bradley300]

i have heard the 416 is better than a 426, something about poor heat dissipation on the 426??? someone with more knowledege of this, help me out.

[Natertot426ex]

You will hear a lot of different stuff on what is best to use. I have a 426 and it has all the power that I need. I can beat 440's with mine. The 426 gets a little hotter but it doesn't really do much unless you are riding in real hot weather, then you will notice it.

[offroader66]

I just rebuilt my 400ex.It was 416 JE 10.8-1 piston and xr cam,stock carb.Great ruuning combination for mx and woods.It would outrun most anything on the tight tracks.I now have 426 ross 11-1 piston and hot cams stage 2,stock carb.Both motors have mild port job.Comparing the 2 engine setups I would take the first setup(416) for mx.Does seem to run cooler and has great low end.When I built my 426 I put it together with the sand dunes in mind.Has great mid to high power but lost my bottom end power.The 426 really hits hard at 1/2 throttle and up,great for throwing sand.On the race track I will either have to get use to the hot cam or put my xr cam back in.Gotta really work the clutch in tight areas.Btw when I rebuilt I put in a Curtiss Sparks clutch.What a pain in the arse to get adjusted..

[Natertot426ex]

Originally posted by offroader66
I just rebuilt my 400ex.It was 416 JE 10.8-1 piston and xr cam,stock carb.Great ruuning combination for mx and woods.It would outrun most anything on the tight tracks.I now have 426 ross 11-1 piston and hot cams stage 2,stock carb.Both motors have mild port job.Comparing the 2 engine setups I would take the first setup(416) for mx.Does seem to run cooler and has great low end.When I built my 426 I put it together with the sand dunes in mind.Has great mid to high power but lost my bottom end power.The 426 really hits hard at 1/2 throttle and up,great for throwing sand.On the race track I will either have to get use to the hot cam or put my xr cam back in.Gotta really work the clutch in tight areas.Btw when I rebuilt I put in a Curtiss Sparks clutch.What a pain in the arse to get adjusted..

I have heard that the Stage 1 cam is good for MX but since you got a xr it would be worth trying it!!

[pnut420]

Originally posted by ThorR88
so i take it a 426 is the way to go for racing becuase i rev out my gears..thanks..any other suggestions?

He was more saying that if you prefer to lug into the corners the 440 big bore, or especially the 440 stroker would be to your benefit in a big way. No matter if you lug or run it wide open a 440 stroker is going to be a powerful motor, and since it has a longer stroke to make it to 440, it doesnt get as hot, a 440 stroker is a 416 with a Stroker crank(cant rememer like +10mm?).

Check out the strokers at powroll.com.

[crashinmatt]

well, actually i pretty sure a 440 stroker has a stroked crank of 4 mm. but u almost have to ride one of each to knoe for sure which u like the best. a buddy of mine has a 440stroker, and i thought that was the way i wanted to go, and i almost couldnt ride it. of course he was geared differently from me too, so i would say to begin with go with a 416, and if u want more then u can bore to 426, or add a stroker crank, or even possibly just go 440 bore.

[ThorR88]

when you said you almost couldnt ride it do you mean that it was that quick?

[ThorR88]

and about how much would a 440 stroker cost for like the hole kit?

[muff]

to get a fully built engine, like for everything you want done to it from Baldwin or FDO will set you back around $2500 call up FDO and he will be more than happy to talk with you about different setups, the guy there is so cool :devil:

[RIDER11X]

Originally posted by muff
to get a fully built engine, like for everything you want done to it from Baldwin or FDO will set you back around $2500 call up FDO and he will be more than happy to talk with you about different setups, the guy there is so cool :devil:

Just out of curiosity, do they make them $2500 faster, as in is it worth spending the cash? No flame, just curious, never been on one.:cool:

[petersonracing]

My buddy had CT do his 426 with 11:1, fully ported head, stage 2 cam, full exhaust and the rest of the goodies back in '99 when he got his 400ex and he just this week took it apart to rebuild it. Four hard years and not a thing went wrong. By the way it made 42.3 rwhp on the dyno. Cost $1400 bucks including shipping both ways and we put the top end together.

[ThorR88]

thats pretty good was his 426 pretty quick?

[petersonracing]

Yeah, it's pretty quick. He rides in the woods and some MX and it pulls really hard out of the corners. Very reliable.

[400exdad]

440 it! Who cares how long it lasts.... just resleeve it when you have to. Just be sure to open up the head while you're in there and compliment it with the right exhaust and carb. I think the 440 needs to breath.

[ThorR88]

im probly going to go with aa 440 stroker then

[pnut420]

Originally posted by ThorR88
im probly going to go with aa 440 stroker then

Look at powroll.com, I talked to them awhile back and for the stroker, porting the heads, boring to a 416, pistons, etc... was around $2,000 on the phone, but I know it doesnt always work out like that on paper. "Well we put these in instead",so its gonna cost you more, etc...

[crashinmatt]

Originally posted by ThorR88
when you said you almost couldnt ride it do you mean that it was that quick?

well yes it was quick, but thats not the reason i couldnt ride it. the main reason was of the power delivery. i was used to mine which wasnt as strong down low, and i just felt weird to me.