400EX 460 stroker questions

[Miami_Vice454]

i am planning to do a stroker for my bike but i want to know from you guys any tips that would help me out or warnings etc.

[Miami_Vice454]

any advice to do something else or do you guys think this would be good? help me out!!

[buster024]

I'm not an expert on the topic, but what research I have done, and the info from the experts I have talked to, suggest that the 440 stroker (416 bore) is a better, longer lasting engine over the 450 stroker (426 bore). I posted the question (and in fact it looks like you posted on the thread), and got the same answer as I have several other times throughout the last two years.

I have no doubt that there are riders out there with the bigger strokers, but it's nearly an undeniable fact that the reliablity of your engine will be sacrificed to a certain extent with the bigger bores.

If you are a trail or mx rider I would have to believe that a 440 (416 bore) stroker would be the best for you.

[odog]

i love my 460 stroker the only thing that i would say is to get a secondary oil cooler and get a bigger carb i still dont have my carb yet but sometime in the next few months i will be getting one

[b.lee]

I have just the 416 and love it.
A 416 with a stroker crank would be sweet. :devil:

[Miami_Vice454]

i am talking about what odog has, its only a crank that you put, no boring required, made by hot rods. i recently talked to some very intelligent people on the subject and they brought a great point. i want to do a stroker because if anything ever happens i still have room to bore if i need without getting a new sleeve. thanks odog for telling me i need another oil cooler. i want reliability and i know keeping oil flowing and changing often will increase reliability. i have decided to do a stroker any more tips of what else to do to make sure it is even more reliable? THANK YOU

[TRXRacer1]

Originally posted by Miami_Vice454
i recently talked to some very intelligent people on the subject Might want to find some different "intelligent" people because nobody makes an 11mm stroker crank for the 400 and even if they did you'd have a hell of a time finding a piston to work with it.

[dariusld]

What cc is a stroked, stock bore, 416,426?

[TRXRacer1]

Originally posted by dariusld
What cc is a stroked, stock bore, 416,426? 420

[rob_990]

Originally posted by Miami_Vice454
i am talking about what odog has, its only a crank that you put, no boring required, made by hot rods. i recently talked to some very intelligent people on the subject and they brought a great point. i want to do a stroker because if anything ever happens i still have room to bore if i need without getting a new sleeve. thanks odog for telling me i need another oil cooler. i want reliability and i know keeping oil flowing and changing often will increase reliability. i have decided to do a stroker any more tips of what else to do to make sure it is even more reliable? THANK YOU

spal fan,gtt studs,kb valves and springs

[TRXRacer1]

Originally posted by rob_990
spal fan,gtt studs,kb valves and springs Why do you keep advising valves and springs? You've done this a couple times. Just curious where you're coming from here. Nobody rocks out with big lift cams and unless the valves are worn why replace?

[rob_990]

i dropped a valve when i just had a cam and wasnt even running high compression

[TRXRacer1]

Originally posted by rob_990
i dropped a valve when i just had a cam and wasnt even running high compression What does high compression have to do with it? Sorry you had some bad luck but that's all it was, bad luck.

[ngates788]

i have the 460 with port and polish. needless to say it hauls. definately recommend the hd studs and the added oil cooler or over sized one. im only running 11:1 with stock valves and springs with no problems so changing those is up to you although ive heard that oversized compliment the stroker well.

[Miami_Vice454]

thank you rob990 and ngates788. trxracer, you are confused. i said i want to do a stroker that hot rods make. its a +4mm which would make the engine a 460cc. it says it on the site. 460CC from a +4MM crank. i dont know how you got 11mm out of what i said.

[Miami_Vice454]

ok scratch that i dont know if that is right, i just found out on another thread that i might be wrong idk????

[odog]

check out my sig. miami its a 89mm(440) with a +4mm stroke (74mm) hotrods cranks only work with hotrods piston 460.

[Miami_Vice454]

ok yea i get it now. that sucks that you cant just do a stroker with stock bore. couldnt they make that?

[dariusld]

4.0mm STROKER WITH POWROLL ‘TOUGH ROD’ - SHORTER ROD - USE ANY 400EX PISTON!

425cc with stock piston, 440cc with 87mm piston, 460cc with 89mm piston

PISTON KIT NOT INCLUDED WITH THIS STROKER - WILL WORK WITH ANY (MODIFIED) 400EX PISTON KIT

This stroker utilizes our super-strong ‘Tough Rod’ (with your stock pin and needle assembly).

The shorter rod allows you to utilize any 400EX piston kit (piston skirt may need to be shortened) and does not require any case or gear modifications.

INCLUDES: New Powroll Tough Rod. Stroke work done on your crank.

REQUIRES: Your crank pin and needle assembly must be good. Non-Powroll pistons will need modification to skirt. Send in your crank for modification. Download our Stroker Booklet for details.


16092R H STROKE 400EX W TOUGH ROD -- $545.00

[Miami_Vice454]

thanks, but is powroll a good product? i have heard of them before but i want a very good product that i know is going to be reliable, for example hot rods.

[TRXRacer1]

Originally posted by Miami_Vice454
thanks, but is powroll a good product? i have heard of them before but i want a very good product that i know is going to be reliable, for example hot rods. They're good. Most of their prices are stupid and I'd find out what mods need to be done to the piston before getting too excited.

[Miami_Vice454]

screw it all! lol im doing what i have set my eyes on from the beginning, the 460 stroker. its going to be a lot of work, gonna do everything get a bigger carb port and polish new valves and rockers, etc. this things going to be a beast. its going to be a while though, gotta save lots of money. Thank you guys for all your help.:D

[ngates788]

and ya a lot of money you will need. i think mine cost in the range of 2 grand. i origionally had a wiseco stroker piston in mine but got too hot with the stock oil cooler on and melted it. put a new CP one in when i rebuilt it with the oversized oil cooler and has been fine since. good luck with the build, you will be impressed with the gains

[TRXRacer1]

Originally posted by Miami_Vice454
screw it all! lol im doing what i have set my eyes on from the beginning, the 460 stroker. its going to be a lot of work, gonna do everything get a bigger carb port and polish new valves and rockers, etc. this things going to be a beast. its going to be a while though, gotta save lots of money. Thank you guys for all your help.:D This is the point where most figure out it's cheaper to sell and use that money plus the mod money to get a killer 450 that will out handle and out perform dollar for dollar.

[odog]

Originally posted by TRXRacer1
This is the point where most figure out it's cheaper to sell and use that money plus the mod money to get a killer 450 that will out handle and out perform dollar for dollar. yeah if u dont have a lot of money invested in your 400 it might be better to just sell it and get a 450. when i bought mine it was used and it already had triple rate shocks renthal handle bars nerf bars and t4 procircuit full exhaust and alot of odds and ends things so for me it was worth it to keep my 400 and build it but i do admit i wouldnt not have bought the kit that i have if i wouldnt have messed up my piston and crank that was on it when i bought it but i always believe when something breaks replace it with performance parts not just stock replacement parts if im going to spend the money its going to be better the next time around. and thats with everything i get not just atvs.oh yeah the difference is well worth it to me.

[Miami_Vice454]

why not a 450r? because i want to tell people oh yea its a 400 then smoke 'em. they are gonna be like :eek2: i will be like:D

[odog]

if your still going to do the 460 stroker the fcr carb is a must i had mine installed to weeks ago and know i feel like i have a hold new bike but it is an addiction now im ready to get the sparks exhaust i thought i had the full procircuit exhaust and procircuit told me they dont make a full exhaust for my bike they just make the slip on t-4 then u could buy there aftermarket header witch is stainless steel and it looks better but it isnt a performance gain over stock. so hopefully in about two more weeks ill have the sparks exhaust. these mods will never end. hahahaha

[Miami_Vice454]

well i was gonna do the 450r carb. do ya think the fcr sparks carb is better? but how much more $$ is it? thats the big question

[odog]

i was told the fcr was better if your looking at the most possible horsepower but i never had the 450r so i cant say which is better but thats what i was told but price wise its no comparsion the 450r carb will be 2-3 times cheaper than the fcr.

[trx460stroker]

I have a 4mm HotRods stroker crank with an 89mm CP high compression and havent had any problems with it for a few months now. i would have to say it is a bad a!s bike. just get a good builder.

[odog]

Originally posted by trx460stroker
I have a 4mm HotRods stroker crank with an 89mm CP high compression and havent had any problems with it for a few months now. i would have to say it is a bad a!s bike. just get a good builder. yea it is a bad bike are u running a performance carb.

[93dirtrider400]

b.lee your quad is SWEET!!!! where you buy your oversized oil tank? I am also wanting to put a 416 in mine! What compression ratio you use? I have a totally stock 400 engine wise other than a white brothers full exhaust and uni air filter! any suggestions for me?

[T_bling11]

Originally posted by dariusld
What cc is a stroked, stock bore, 416,426?

It's 425 cc with just the +4 mil crank