stock trx 450r what to do to it

[DADEBOYRACER101]

2005 stock trx450. im looking for some top end mods for drag racing what should i get . could a stock trx 450 pull sprockets and what kind of pipes could i get 4 topend

[dajogejr]

www.trx450.org

 

Cam, pipe, air filter, ignition....how much money ya got?

 

Trust me on this, you could easily spend three times as much on this bike as you could a banshee to go half as fast!!! How committed are you?

 

My buddy has a 450R that he got the biggest NMotion and Falicon kit he could get for it, a 564 kit. It's still no drag race bike, but....it is a TON of fun to ride.

 

I know you're not looking for a 450R vs. built banshee comparison...

 

BUT:

 

You asked about drag racing and you asked about it on a BANSHEE site...so, it's only fair!!

[woodro77]

my brother has a 06 trx 450 with the HRC kit and it is fast , it keeps up with my banshee and i have trail port , pipes and k+n no lid, +4 timing , in a drag race sometimes i win and sometimes he wins , i was very suprised .

[sredish]

I would stay away from NMotion. does the 450r have the HRC kit? If not, you need a cam in that thing bad. Think Hotcams Stage II ($120) or an 04/05 HRC from eBay. Next you need a full pipe. Those two things will really really wake the bike up. I'd run a 14/39 gearing on it. That's one lower than stock but it'll work well once you get some mods done. After you get a cam and pipe, the next step would be to put a higher compression piston in it and a good one, not a typical shelf piston. I run a 14:1 Venom piston in my bike along with a huge cam (.430 lift and lots of overlap) and it kicks ass. When you go for a piston, you can go from the stock 94mm and jump up to 97mm for a 480cc bore and do it rather cheaply for a good kick in the power. It's been shown that going much over 490 is defeating the purpose; while your gaining cc's, your slowing the rev which is the 450's strong point, so while it builds more power on the dyno, it does it slower, so often times a properly setup 480/490 will run with or outrun a 520+ setup; I've done it myself.

 

Any questions, PM me or get ahold of me on TRX450R.ORG.

 

Also, a very very good contact on these bikes is Kam @ KBR in Utah. he builds 450r drag bikes. 801-967-7100 Tell him sredish sent ya.

Edited February 16, 2007 by sredish

[dajogejr]

I would stay away from NMotion. does the 450r have the HRC kit? If not, you need a cam in that thing bad. Think Hotcams Stage II ($120) or an 04/05 HRC from eBay. Next you need a full pipe. Those two things will really really wake the bike up. I'd run a 14/39 gearing on it. That's one lower than stock but it'll work well once you get some mods done. After you get a cam and pipe, the next step would be to put a higher compression piston in it and a good one, not a typical shelf piston. I run a 14:1 Venom piston in my bike along with a huge cam (.430 lift and lots of overlap) and it kicks ass. When you go for a piston, you can go from the stock 94mm and jump up to 97mm for a 480cc bore and do it rather cheaply for a good kick in the power. It's been shown that going much over 490 is defeating the purpose; while your gaining cc's, your slowing the rev which is the 450's strong point, so while it builds more power on the dyno, it does it slower, so often times a properly setup 480/490 will run with or outrun a 520+ setup; I've done it myself.

 

Any questions, PM me or get ahold of me on TRX450R.ORG.

 

Scott...I think my buddy would fully agree with you. His old ESR 480 kit ran very strong, and after a lot of money spent on an Nmotion cylinder and Falicon Crank, neither of us were very impressed with it.

 

Yeah, HRC kit is WELL worth it. Just make sure you get a shim kit or have someone that knows how to install a cam do it properly, it is NOT a drop in, they use shims to set clearances on valves...and that is critical on these motors!!

 

Sred...Venom isn't a Mixxer piston, is it?

 

When I had just bolts on to my banshee, pipes, pods, timing and flywheel, my buddy with his 450 had a TON of very good races....he won some and I won some. (Although, if either of us have a few beers, we would each tell you we both won the majority of them...he he...it's all good.)

 

That's why I laugh when people say these 4 pokes are slow. Compared to an alky breathing cub motor, yes...they're not even close (as my buddy found out) but a basic ported and piped banshee will have it's hands full with a properly setup 450.... And the YFZs drag even better!!!!

[baddsheee]

I would sell it and get a banshee, if you want to win some drags! :yelrotflmao:

[sredish]

Sred...Venom isn't a Mixxer piston, is it?

 

Sho nuff is..... :thumbsup:

[sredish]

I would sell it and get a banshee, if you want to win some drags! :yelrotflmao:

 

I would more than willing to line dead even with you and teach you a few things.... better have a little more than what your telling us in your sig anyways....

 

That's why I laugh when people say these 4 pokes are slow. Compared to an alky breathing cub motor, yes...they're not even close (as my buddy found out) but a basic ported and piped banshee will have it's hands full with a properly setup 450.... And the YFZs drag even better!!!!

 

A very true statement. Sure a 450 - 480 isn't going to be taking a stretched out +7mm twin, an alky monster or something but stock bore, ported banshee will have it's hands full with a PROPERLY (that's the key) setup 450. The last time i was out at LS, I was lining up with a +4 cranked, slightly stretched banshee with a very light girl on it and was getting taken by a quad length. She was very good on the starts also.

 

The 04/05 TRX bikes have terribly low compression. The 06's and up were bumped up by 2 points. So, an 04/05 bike desperately needs a CAM, FULL EXHAUST and COMPRESSION. Those three things when done right will get you into very good territory. Porting is equally important but it the other three will get you there fast. You might as well have the head ported if your pulling it off for a piston tho. NMotions cylinders aren't bad but their portwork is horrible. The pistons they use are mild compression and just shelf stuff, nothing special. The ESR kits run well for sure but their is still a little left on the table with a nicer piston w/ more compression, Venom, Baldwin.

 

Like I said, give Kam a call at the number I gave you and he'll have everything to set you up right and will talk your ear off.

Edited February 16, 2007 by sredish

[dajogejr]

Sho nuff is..... :thumbsup:

 

Two guys I ride with had his hammer head piston, the rings didn't last long on those at ALL.

 

Are the venom holding up better?

 

And by not holding up, I'm talking less than half a season, couple trips to a 500 ft drag strip (probably 20 passes to 30 passes) and a 4 day dune trip. Rings were shot.

Granted, they were 2 ring pistons....but...both motors ate rings!

 

They did make good power, though!

[sredish]

Two guys I ride with had his hammer head piston, the rings didn't last long on those at ALL.

 

Are the venom holding up better?

 

Yes. And actually, the HH's weren't bad either but the mfg. (CP) wasn't giving out proper ring gapping specs and the first few batches of HH's were still protos. They, partly due to install specs, had some smoking and ring issues. The Venoms went through a much stricter testing process and all the T's were crossed. Mine runs like a pissed off freight train and zero smoke.

[dajogejr]

Yes. And actually, the HH's weren't bad either but the mfg. (CP) wasn't giving out proper ring gapping specs and the first few batches of HH's were still protos. They, partly due to install specs, had some smoking and ring issues. The Venoms went through a much stricter testing process and all the T's were crossed. Mine runs like a pissed off freight train and zero smoke.

 

Thanks for the honest opinion! I'll have to share with my buddy...although I don't know if they make a Venom big enough for the NMotion cylinder he has now!!!

[sredish]

Thanks for the honest opinion! I'll have to share with my buddy...although I don't know if they make a Venom big enough for the NMotion cylinder he has now!!!

 

Baldwin would be my second option.

[thegroup]

I would sell it and get a banshee, if you want to win some drags! :yelrotflmao:

pretty much, ull spend a shit load to get the 4-poke to go anywhere. ull spend half that on a banshee and gain 2x as much if not more

[dajogejr]

pretty much, ull spend a shit load to get the 4-poke to go anywhere. ull spend half that on a banshee and gain 2x as much if not more

 

I disagree....

A piped, jetted, cam'd and air filter 450 will beat a banshee with the same mods.

Reeds, Pipes, air filter and jetting.

 

Costs are probably about close....

 

One you start diving into the engine, however....porting, etc., then it's not fair. Don't forget, this motor has been around since BEFORE 87, street bike heritage. These 4 strokes are still cutting their teeth...

 

5 years ago there were no cub cylinders, Twisters, Caracals....etc.

 

Once you start really sinking money into a banshee to go fast, it loses some or most of it's overall ridability.

Whereas you can delve much deeper into a 4 stroke and still hit the track and trail.

 

I used to argue with my buddy about this all the time, but...his point is, I never intend on beating cub, swung, ported alky monsters on my 4 poke...his goal is to beat other 4 pokes...and some piped and jetted banshees. Which....in that case, he can.

 

I expect him to beat my 10 mil 14 over drag bike with his 4 poke as well as I expect myself to beat him hammering through some whoops and around winding turns, etc.

 

Different flavors, different recipes, different diners....

[baddsheee]

As far as much cashola into a 4poke, it is a difference in the long run. Like sredish said he can keep up with me, for now. Maybe true, he probably paid 8 or 9 grand for his bike including his mods. I am under half of that. A few more mods for me will be a few hundred $$, for him to keep up it will cost him a lot more. Later down the road with a cub I still will be under the cost of his bike from the stealership.