new or hardweld rockers? 250x/300EX

[250X_project]

I have 2 choices. $95 for new OEM rockers, or $110 plus shipping both ways? for hardweld. Also is there any extra fees if they do not like the cores i send? The best price I can find is $55/ rocker through FST. Thanks!

[honda300EXtreme]

it depends what kind of cam your running, if its stock or hotcam or something along those lines a hardweld rocker will damage the cam,,

[2muchquad]

did you ever find a big piston?

[dork]

if you're going to run a billet cam, then you can run new stock rockers. if you're going to run a hardwelded cam then you need hardwelded rockers. you can also try cycleworks racing. he does fast work.

[250X_project]

Yeah, sorry I called up Scott and he actually just emailed me tonight. He sent out the piston kit and gasket yesterday(tues) so hopefully soon she will run....

Yeah I tried CWR. He's $60ea. I think. Thanks!

[2muchquad]

I think you owe me a finders fee for the piston kit:D

[bwamos]

What the other guys said.

Billet Cam (Hotcams/HRC/Stock) = Stock Rockers no HRC for the 300ex.. just a reference.

Hardweld Cam (Web Cam, most 300ex/250x cams from engine builders, etc..) = Hardweld Rockers

[250X_project]

finders fee? Whats your address? I'll send you a dollar. haha

Now I have a White Bros cam. How do I tell if it is billet or not? Thanks!

[bwamos]

I'm pretty sure WB Cams are WEB cams relabeled. Best bet is to just call them and ask what style they are.

[2muchquad]

I have a older wb cam(#1850 grind)in my 250x motor and i have been running regular stock rockers for a while now.My sparks cam is a billet cam,i run stock rockers with those as well.

[250X_project]

yeah, I always thought Web and WB were very similar.

Mine is actually an 1850. You have a 250X engine also?

[2muchquad]

Yes i have a 250x engine as well,with the 1850 cam,it really picked up on the top end.I swear if i add my fcr carb on it and shave the flywheel,it would almost run like a 250f,its runs really well for only having a .040 over 12:1 piston,cam and exhaust and a 400ex carb.I put my 300ex motor in it from time to time,whenever im bored or have to escape the wife and kids,i go into the garage and swap motor...something to do.So i currently have,the 250x motor,385ex motor,and 350x motor sitting idle,awiting for their time to shine.Stock bore 300ex motor is what im currently running.You'll like the wb cam;) Does Scott have any more 86mm piston kits?

[bwamos]

When I had my motor built by FST. He said my rockers were in good enough shape to use the stockers even though the cam was a hardweld. I haven't had an issue yet. (6-7 years). But, the general reccomendation is to match styles.

I think it's along the same lines as the break in theorys.. lol. ;)

[250X_project]

2muchquad- I didn't know you had all those. I thought it was just the 385 and the 350X. Now all of these go in a 250R frame?
Do you think the 1850WB will be a good cam for the 406?

Also, what exhaust do you guys think would work Best?I am leaning towards the X6 Sparks.


bwamos- I think your write, it is like the break-in theories.

[dork]

does anybody have the specs on the 1850? i remember seeing WB cams back in the day in catalogs and the one i always saw listed for the 250x/300ex was an 'all around' cam with .335", which would be the 254 grind from web. for your 406, i would look at the 240 grind, or megacycle's .370" grind. remember you're feeding those extra cc's. if you run FST's springs you don't need shortened guides with the bigger cams, plus the springs are lighter than the shelf kibblewhites.

[dork]

for the rockers, if you run good oil and change it often, you can probably get away with stock. but the more aggressive cams have fast ramps and place more stress on the rocker/lobe sliding surface beats up the oil faster and will increase your chances of rocker failure. its kind of like insurance, you may be ok for a while but if something happens you'll be glad you have it.

[key]

I had a 254 grind Web Cam in my 250X with stock rockers. Well after about 6 months the rockers and cam wore down and all was junk. Currently just installed 254 Web Cam and Web hardweld rockers. Cost me $100 more in the long run and more work.

[250X_project]

The 1850 is one under the .335. It's the .320 lift. the second smallest..

Now if the company doesn't like the condition of your rockers do they charge more?

[2muchquad]

Usually it doesnt matter what the "pads" look like because they will weld them up anyhow.I really like the wb 1850 in the 250x motor,it appears to be more willing to rev and pull harder up top,i also run a web 236 gring in my current stock bore 300ex that i like as well,its more of a 'all around' cam even though its listed as more mid and top power.Its still makes pretty good torque for the woods though.If you keep up on your oil changes and run a cooler,you should be able to run stock rockers,remember HEAT will destroy oil faster than anything.

[dork]

you have stock bore motors...:cool: whats in your big bore 300?

yea, on the rockers i would recommend them if the cam is hardwelded, especially since honda's rockers have been known to fail over the years(XR's, 400ex, 300ex, 200x, 350x). do it right, do it once.

as long as the rockers are usable, they charge you the same amount.

my friend started his 380ex in -15 weather w/15w40 and the oil filter bypass valve blew off the filter base(emgo w/****ty spotwelds) and blocked the pickup. so he had virtually no oil pressure. the cam lasted for all day on the ice, it only started clacking at the end of the day, even though the cam and rockers were trashed well before that. the rockers were blue up to the pivots and the cam was blue to the sprocket.

[honda250xrider]

fst made me a cam for that motor awhile back, i have to admit it was a great all around cam, it had tons of bottom with good mid, the top end was decent but was more going for the bottom/mid, if you call fst im sure he will make you one. I think mine was 150 when he made it

[250X_project]

What if one of the "pads" actually has a chuck out of it? :eek2: I think am am leaning more towards the hardweld, just for ensureance on such a intense build.

Hey honda250xrider! What kind of lift #'s did that cam have? What exhaust did you run?

[250X_project]

Also, was it a hardweld? Thanks

[honda250xrider]

yes it was a hardweld cam, the exhaust was a tc racing, i have no ideas about the lift numbers, i know it was a custom cam from fst but the lift and duration i do not know.

[honda250xrider]

i do know though i did have aftermarket springs and im almost thinking shortend valve guides to run this though i am not postive. i can say this though that with the motor i pulled 14/34 gearing easily! wheeling in 4th without a problem. When i had it check but gps i tracked 79-80mph this was without a rev limiter also.

[2muchquad]

you have stock bore motors... whats in your big bore 300?

I have 2 300ex motors Dork,one is stock and one has the 385 kit in it.I also have a 250x motor as well,i actually have a few parts for these motors.:D

[2muchquad]

14/34 gearing easily! wheeling in 4th without a problem

gimme some of that stuff your smokin:D

[250X_project]

honda250xrider- How'd you like the TC exhaust?

2muchquad- What is your TC/hybrid? And what do you have for the 350X conversion?

[2muchquad]

That was the 250r with the 385 motor in it,that motor has been replaced with a 2 stroke motor.The 350x motor is idle,sitting in the shop:(

[dork]

replaced with a 2 stroke? thats doing things the easy way:cool:

what cam are you running in the 385?

[honda250xrider]

i really liked the tc exhaust although it was very loud, it was not a top end pipe by any means,

2muchquad, u must realize This was on a full out 406 stroker motor, big valve full race port head, fst cam, hc piston..... this was a one off motor. somone on this site does indeed have this head, and i would love to hear if they ever did get it installed the head was a work of beauty.

[2muchquad]

Dork i was running the sparks cam when it was running,i have the top end off doing a base gasket replacement.Im contemtplating doing a re ring job while its apart.As far as the 250 2 stroke motor in the 250r chassis,i was bored,i never leave anything alone.hell i got a yz490 motor that may find its way into a chassis one day,i just love tinkering i guess:D

[250X_project]

2muchquad- What is your TC/hybrid? And what do you have for the 350X conversion exhaust?

honda250xrider- How big were the valves in the head?

[2muchquad]

I dont have the 350x motor in use at the moment,i did have a 400ex header modified when i did.tc hybrid?you mean the 250r with the 385 motor?that motor is a 250 2 stroke motor now(fastest way to 45+hp).Scott have any more 86mm piston kits?

[honda250xrider]

intake was +3mm exhaust was 1.5 or 2mm i beleive. when they do these that big they will have to do a completly new valve job along with a few other modifcations.

[250X_project]

O ok. What is your TC hybrid though? Just cut for the 250r frame?

Where did you get those valves??