aftermarket 400ex header

[hondaking52]

hey guys, in the process of building a 416, and just wondering if a header will help that much? right now i have a hmf slip on but they dont seem to make just a header for the 400ex, so will any other header work? or do i need a non slip on muffler? and i may need to buy one anyways because my stock one cracked again...lol

thanks

[HondaRacing83]

yeah. most headers will work with the hmf slip on. ik of a few people who run a hmf slip on with a fmf powerbomb header.

[hondaking52]

ok so now i just need to find a header...

[82toyota]

go big and buy a curtis sparks x6 big core full pipe

[hondaking52]

haha, dont really wanna spend another 600...

[trailrider894]

Originally posted by hondaking52
haha, dont really wanna spend another 600...

I have the Powerbomb Header, and it is very nice!! lowered the DB level and added a few seat of the pants HP. It will need the header welds ground out just like the stock header, but the webs aren't near as big.

[82toyota]

Originally posted by hondaking52
haha, dont really wanna spend another 600...



i have use one in the shop right now lol when i took my quad to the tulsa to have top end done i went and order another sparks pipe bc everything else was new....

[tri5ron]

By looking at your sig., your engine is stock with a timing key.

For the money you will spend, you would be best served, to keep your slip-on with your stock header.
(reweld your cracks or replace with something like this...)
http://cgi.ebay.com/ebaymotors/MODIFIED-400ex-header-w-shield-headpipe-pipe-exhaust-_W0QQcmdZViewItemQQhashZitem27b97b3595QQitemZ17061 5584149QQptZMotorsQ5fATVQ5fPartsQ5fAccessories

Grind down the welds at the headpipe if you like, and get a 450r carb, one of ZRpilot's adapters, and a good foam airfilter.

Jet accordingly, and you will have 3 times the gains,..... for 1/4 to 1/3 the cash spent, as you would get from any aftermarket header.
That should put you right around 31-32 HP, up from your stock 24-26 HP.

A aftermarket header will give your stock motor 1 to 2 hp MAXIMUM Gains.

so you have to ask yourself,...
"Is 2hp really WORTH $450 to $600 Bucks ?"

My wallet says NO !

[slightlybent47]

That little bit of gain you would get would be on the top end of the rpm range and it would take away a little of the low end torque. I still run the stock head pipe even with all my mods. You have to understand it’s not going to do much good just opening up part of the air flow through the motor, like just the pipe and or carb and filter change. If you don’t open up the whole thing like porting, valves, cam, then it won’t do much good.
You have to combine all those things together to get a real increase in power.
You could do a port job and cam for that $450.00 and have more power gains.

[hondaking52]

Ya that's why I'm putting a 416 11.1 and a stage 2 HC....haha

[tri5ron]

Originally posted by hondaking52
Ya that's why I'm putting a 416 11.1 and a stage 2 HC....haha Oooooooooooooooooooooooooohhh,......


nevermind

[fauxamish]

Originally posted by 82toyota
i have use one in the shop right now lol when i took my quad to the tulsa to have top end done i went and order another sparks pipe bc everything else was new....



You have a pm.

[hondaking52]

Originally posted by tri5ron
Oooooooooooooooooooooooooohhh,......


nevermind haha, yep. and ur link dont seem to work ron...

[tri5ron]

it's too late.
it was a stock header pipe on ebay for 29.00 buy it now.
gotta be "Johnny on the Spot" to grab the good deals.

[hondaking52]

ohhh, ok..

[BenHonda400ex]

Originally posted by hondaking52
haha, dont really wanna spend another 600... That really suck's man! :( I only have the exhaust and filter performance wise and mine pull's 1st through 3rd gear. And its really loud! http://www.youtube.com/watch?v=IAeBeYW0OJQ
The video doe's no real justice for it. The exhaust is LOUD! I think I had the loudest Atv at Chadwick this weekend. Just sayin'...

[82toyota]

sparks pipe is the best pipe to buy for a 400ex i think but that me

[vinson581]

i have to second that notion, i used to have a 400ex with a sparks x-6, it was deff all around the best pipe i have ridden on a 400ex. used to pull holeshots on built 450s at the track with the bike perfectly setup.

even pulled a piston, cammed, ported yfz, till 3rd on pavement, damn i miss my ex :(

[fauxamish]

82toyota, if you're selling the Sparks exhaust you said you had laying around, I would be interested in it

[pmg8134]

call HMF they will mod your slip on to fit their header and ship the whole thing back to you for $250 plus $16 shipping.

[hondaking52]

Originally posted by pmg8134
call HMF they will mod your slip on to fit their header and ship the whole thing back to you for $250 plus $16 shipping. really? thats not to bad...so the slip-on doesnt work with the header i guess....

[pmg8134]

they chop off the collar of the slip on to accept the headpipe from what i understood. the tech there says it`s no different than purchasing a ful system from them.

[CJM]

250 bucks??? Thats nuts!

Find a local welding shop that can weld Aluminum and it might run you maybe 75 bucks at most.

No way I would pay 250 for what equates to maybe 30 mins of work.

[hondaking52]

Originally posted by CJM
250 bucks??? Thats nuts!

Find a local welding shop that can weld Aluminum and it might run you maybe 75 bucks at most.

No way I would pay 250 for what equates to maybe 30 mins of work. i think they give you a header as well....and it aint alum.

[CJM]

Originally posted by hondaking52
i think they give you a header as well....and it aint alum.

Wasnt sure if he was talking about the silencer or the header itself. Some silencers are made of AL.

If it is 250 for everything thats a better deal. Way he worded it-250 for them to modify your stuff lol.

[hondaking52]

Originally posted by CJM
Wasnt sure if he was talking about the silencer or the header itself. Some silencers are made of AL.

If it is 250 for everything thats a better deal. Way he worded it-250 for them to modify your stuff lol. haha, ya i wouldnt pay 250....lol

[pmg8134]

$250 for the new header and your freshly modded used slip on. good deal i think for the header and the mod. sorry if i was vague. I swallowed a bug.

[Mr-Sleeper-34]

I'm looking for a aftermarket muffler that is a plug and play to the stock header that sounds similar to stock. Any suggestions?

(muffler on eBay but link will not hyper) Slip-On Silencer Exhaust Muffler HONDA TRX 400EX Pipe

^What about this one? Direct bolt on to the stock header?

[dariusld]

Originally posted by Mr-Sleeper-34
I'm looking for a aftermarket muffler that is a plug and play to the stock header that sounds similar to stock. Any suggestions?

(muffler on eBay but link will not hyper) Slip-On Silencer Exhaust Muffler HONDA TRX 400EX Pipe

^What about this one? Direct bolt on to the stock header?

That won't sound close to stock.

[trxPOWER]

agreed, but just to let you know your gonna have a hard time finding one that will not bolt on the the stock header!

[Mr-Sleeper-34]

Originally posted by dariusld
That won't sound close to stock.

^Were you referring to the big guns system? I was talking about the LEXX muffler that comes with the silencer on the stock header.