pipes

[TRX-330]

Im lookin for a new slip on, i have a full dg pipe butt i want something thats throatier. Im look at the curtis sparks pipes what do you guys think of them.

[67mopar]

i have a yoshi slip on and love it

[timb052]

would you be interested in selling the pipe you have now for cheap? well would it fit a 07 300ex?

[TRX-330]

id think it would fit butt how much is cheap too you im thinking 100, and all im selling is the slip on unless i cant get just a sparks slip on then ill sell the whole thing for 200

[timb052]

What model pipe do you have?

[TRX-330]

this is what i have
http://cgi.ebay.com/ebaymotors/HONDA-300EX-DG-FULL-CHROME-EXHAUST-250X-300-EX-MUFFLER_W0QQitemZ270143965770QQihZ017QQcategoryZ43 978QQrdZ1QQcmdZViewItem

[QuadRider55]

i love my sparks pipe

[honda300EXtreme]

Get

sparks or
HMF slip on with White brothers header


and the sparks pipe for the 300ex is a 1 piece full exhaust

[cr977]

i love my sparks pipe but it is a complete system not a slip on, the pipe/muffler are attatched, i think my sparks pipe is amazing, the bike has so much more on bottom end it is incredible, the midrange is a significant increase, but the top is no noticable increase, but i use bottom to mid most so the pipe is awesome for me.

[TRX-330]

ya i think im gunna get a sparks after im done with the motor ****.

[Ghost-Rider]

I have a Full FMF system, its the
Power Core 4, i think it sounds good.

[cr977]

Originally posted by Ghost-Rider
I have a Full FMF system, its the
Power Core 4, i think it sounds good.

gosh that thing hangs out like 6 inches beyond the fender

[TRX-330]

ya i dont like fmf anyways

[2muchquad]

gosh that thing hangs out like 6 inches beyond the fender


Thats funny,sorry about that:D :D

[Caseys 300ex]

If your 300ex has a 330 kit and your wanting to put a 340 on it then you will need a full exhaust like sparks or hmf. These both have big headpipes for all the gases youll be releasing.

[TRX-330]

i got a full dg right now butt want something diff. and i dont have a 330 i was gunna do a 330 but couldnt find a 30 over piston as cheap as i did a 40 over piston.

[TRX-330]

whats the loudest pipe u guys have herd on a 300ex.

[300exOH]

Originally posted by TRX-330
whats the loudest pipe u guys have herd on a 300ex.

TC and sparks x4(race version) are the loudest I've heard. I have the sparks x4 with the spark arrestor/disks and it is still really loud. The DG and cobra pipes aren't far behind. Do yourself AND the sport a favor and stay away from the loudest ones...it's the number one reason riding areas (and back yard tracks) are getting shut down.

[TRX-330]

this is for my raceing bike, not the one i ride around

[300exOH]

Originally posted by TRX-330
this is for my raceing bike, not the one i ride around

I see. You still want to watch...more and more racing circuits are putting restrictions on sound. Either way it's not always the loudest pipe that makes the most power. DG and cobra pipes are very loud but almost every pipe on the market makes more power.

I would recommend the sparks x4 w/quiet core. You can always remove the quiet core when racing on tracks with no sound restrictions.

[honda300EXtreme]

yea tc and the gt thunder shorty pipes are loud as hell,,,

but the sparks and hmf both make great power

[bwamos]

Originally posted by TRX-330
i got a full dg right now butt want something diff. and i dont have a 330 i was gunna do a 330 but couldnt find a 30 over piston as cheap as i did a 40 over piston.

Not to dissapoint.. but those pistons dont make a 330/340.

A "40 over piston" = +0.040" or 1mm larger diameter.

A 40 over is a 289. (stock is 282cc)

A 330cc requires an 80mm piston which is 6mm (0.240") dia larger than stock. It would be a "240 overbore"

Just don't want you to get the short end of the stick unknowingly.

[TRX-330]

well my motor builder told me that the 40 over piston would make it a 340 so i was just going by what he told me.

[bwamos]

Originally posted by TRX-330
well my motor builder told me that the 40 over piston would make it a 340 so i was just going by what he told me.

You may want to discuss it a little further with him. Either there was a miscommunication, or he doesn't quite know what he's talking about. Or a combination of both.

Also if you plan on racing, I'd check the local requirements. Some classes allow up to 350cc, others only allow 300cc.

A 297cc (true 300) motor is a screamer. If i were to do it again, i'd probably go that route. That's an 80 over piston (+0.080 / +2mm)

[TRX-330]

so a 300ex really isnt 300cc i think im starting to understand this stuff now, plzz keep telling me haha

[TRX-330]

and ya i think my motor builder knows what he is talking about he's been building engines for over 8 years now. i think i just didnt understand what he was talking about haha

[300exOH]

Originally posted by TRX-330
so a 300ex really isnt 300cc i think im starting to understand this stuff now, plzz keep telling me haha

A 300ex is actually a 282cc if I remember right:ermm:

Just make sure to ask your engine builder a few more questions before you jump into anything. 8 years building atv/bike engines isn't that long. It might be worth the few extra $$ to send it out to a known reputable builder like GT thunder... since it's in Ohio it may not cost much to ship to him.

[honda300EXtreme]

yea i would discuss this a little further into detail with your mechainic because if he tells you a .30 over = 330 and .40 = 340
your guarenteed troubles..

like said before,, since your in your engine you might as well go all out and get a 330/350 kit

fst sell a 330 kit for 295 + 8 shipping,

sparks sells a 345 kit (100 for the sleeve.. i think)

and gt thunder... well gt thunder will break your wallet

[bwamos]

Correct.

A stock 300ex is 74mm bore x 65.5mm stroke = 281.56cc's

20 over (.020")= 74.5mm x 65.5mm = 285.38cc
30 over (.030")= 74.75mm x 65.5mm = 287.30cc
40 over (.040")= 75.0mm x 65.5mm = 289.22cc
80 over (.080")= 76.0mm x 65.5mm = 296.99cc
120 over (.120") = 77mm x 65.5mm = 304.85cc
160 over (.160") = 78mm x 65.5mm = 312.82cc
200 over (.200") = 79mm x 65.5mm = 320.90cc
240 over (.240") = 80mm x 65.5mm = 329.07cc

[bwamos]

It's when you get into cams, oversized valves, headwork, etc.. that it starts getting expensive. ;) A decent amount of labor goes in porting a head right.

[TRX-330]

ya he has been porting and polishing my head for a few days now. and im sorry i didnt word it right up there, he has building my engine for 8 years im not sure how long he has been doing it. we first started with him when i race go karts and have allways used him for w/e we race and have never had any problems, my last go kart i raced was 40 over and ran real good so i cant complain. butt thanks for all the info on the sizes i have allways wanted to kno that stuff.

[TRX-330]

where can i get one of these tc shorty pipes at, like the one on this bike.
http://i137.photobucket.com/albums/q208/DrptS10/300ex2.jpg

[TWISTED DINLI]

you have to call tom at TC racing engines.

heres the number: 814-723-3514

[TRX-330]

oh so i have to have one custom made i cant buy a used one, i was hopeing i could find someone to buy a used shorty off of butt cant find anyone. how much is a brand new one.

[TWISTED DINLI]

no i dont think you have to get one custom made but you just call him and tell him you want one and he will send you one. yea you could prolly find a used one from a couple kids in the nationals because they is a lot of kids that run them in the nationals. i dont know how much a brand new is but you never know tom might have a used one at his shop.

[honda300EXtreme]

yea your best bet is to call tom and order one..


i havent seen any of them for sale in a long time.... on this site or ebay or anywhere else.... but ya never know

[TRX-330]

wheres this tom guy located and, dose he like own tc or something cuz i seen alot of people are saying to get ahold of him to get the shorty.

[honda300EXtreme]

yea

TC= Tom Clarson

[TRX-330]

oh cool thanks i am prolly just gunna give him a call when i get the money to buy a new one. dose he make just a slip on or is it a full system, if he makes a slip on how much do they run for. Thanks for the help guys.

[honda300EXtreme]

im not sure.. but i would get the full system

[bwamos]

It's a full system pipe.

And, I'm not sure if he even makes the shorty anymore since the newer dB requirements don't allow them to be run in most racing series' anymore.

[TWISTED DINLI]

yea he still makes the shorty exhaust for the 300ex. its just not as loud as the 450's w/ the shorty exhaust.

[2strokeTim]

i love and trust hmf slip ons or full a yoshi is good to but i prefer an hmf

[twisted300ex]

i would definitly go with the sparks exhaust its awesome! ive got one and i love it

[foxrider7]

whats cheapest sparks deal out there?

[300exOH]

Originally posted by foxrider7
whats cheapest sparks deal out there?

Not sure cheap and sparks belong in the same sentence LOL... but C&D will probably be about the best deal since they give a discount to site members.

[Ghost-Rider]

My pipe doesn't stick out as far as it looks, the endcap is just past the grab bar,If you want cheap and loud...get a cobra pipe lmao.