Log in

View Full Version : Rad valves?



cheese
28th June 2007, 13:45
What do they do? is it just extra reeds in there in a w configuration that helps air flow or something? Does it give you better power? I've just seen some on tardme for my bike for $100.

Paulus
28th June 2007, 13:54
Supposedly redirects the airflow (via its aerodynamic shape) more directly into the crankcase to stop the (heavier) fuel particles from flying to the edge of the intake charge and separating out. Used with Boyesen carbon reeds but is a separate item (basically a whole new intake manifold). You have to rejet a little leaner. I didn't really notice any effect from mine but I guess others may. Boyesen had some pretty impressive looking dyno results on their site. Snake oil?

scott411
28th June 2007, 15:57
rad valves are pretty old school, V force is the go these days, they have twin sets of reeds (2 v's)

both require rejetting, and to be honest i would not bother,

do you need more HP?

cheese
28th June 2007, 16:49
Not really, just wondering what the deal is with them.

laRIKin
28th June 2007, 16:54
I put one on my 97 KX250 and liked it and would buy one again.
I did not have to re-jet and it smoothed out the power band and gained a bit more everywhere.
And the bike was easier to ride because of this.

k14
28th June 2007, 16:55
I'm confused. Are you guys talking about reed valves? Or are rad valves something completly different?

B0000M
28th June 2007, 16:59
cheese an easyer way to get more power from your bike would be to open the throttle a bit :p

scott411
28th June 2007, 17:42
I'm confused. Are you guys talking about reed valves? Or are rad valves something completly different?

a rad valve is a aftermarket reed valve,

Kickaha
28th June 2007, 20:04
a rad valve is a aftermarket reed valve,

reed valve or reed block?

laRIKin
28th June 2007, 20:35
reed valve or reed block?

You can or could just buy reeds.
Most buy both as a set as they work better.
I have a long winded Vid about them in between MX races.
The block has vanes in side it to help with flow and is a bit strighter to also help with flow.
If I buy another two stroke bike I would buy one again as they impressed me as a good thing to get more and even power.

http://www.boyesen.com/cwo/OFFROAD/Products#rad

Reckless
28th June 2007, 20:43
cheese an easyer way to get more power from your bike would be to open the throttle a bit :p

:killingme :killingme :killingme :killingme OH SHIT BOOOM YA DONE IT AGAIN!!
Saved cheese a hundred bucks as well!!!:rofl: :rofl: :rofl:

Sorry cheese but he got you a beaut!!!

Buddy L
28th June 2007, 21:00
when we next go for a ride cheese, if my 125 goes faster then your 250 then you need to listen to boom.
But i have to get mine going first.

GR81
28th June 2007, 21:16
grow some balls first cheese! :)

ArcherWC
28th June 2007, 21:28
grow some balls first cheese! :)
Pot......this is kettle........hahahahahaha

cheese
28th June 2007, 22:42
LOL Cam you would probably beat me on a CR80.

I don't think I need more power as at ardmore the other day my bike was wheel standing on most straight anyway.

Booom - Thanks for that. Bastard......

B0000M
29th June 2007, 00:09
Booom - Thanks for that. Bastard......

anytime man, no worries

Reckless
29th June 2007, 10:23
I don't think I need more power as at ardmore the other day my bike was wheel standing on most straight anyway.

Cheese
What was Ardmore like I was thinkin of goin out to the last Wednesday practice as the weather was good.
Was it full a fast guys where I'd get in the way or was it ok.

I did the Woodhill forest ride last Sunday. Was ok but the sand, roots and whoops aren't really my thing.

cheese
29th June 2007, 11:21
You will love it on a wed, there is only about 20 odd people there and they aren't all riding at once. Gets a bit boring going round in circles, but still fun.

Reckless
29th June 2007, 11:27
need to practice gettin some air ( well any air would do). So don't wanna fall on my arse and have a high flyer land on me. If the weather is ok might go next Wednesday afternoon.

Teava
29th June 2007, 11:48
So how busy does it get on a sunday?
Going there for the first time on sunday.....
But from the sounds of it there seems to be heaps of fast guys that go there!
What classes do they run? Novice, Clubmans, pros?

B0000M
29th June 2007, 15:45
yea theres pretty much a class for anyone of any ability or in-ability on sundays

Reckless
29th June 2007, 15:50
oh shit Boom I'm not going where anyone can watch :yes:
It was bad enough ridin with you guys:whocares:

Teava
29th June 2007, 16:00
Hope to meet some of you guys there.
We will be the group of KTM's in the big transit lol.

Hope its not raining on sunday, rode in the mud last weekend not keen to do it again, but hey i guess you gota learn some time!:rockon:

GR81
29th June 2007, 16:50
Pot......this is kettle........hahahahahaha
people in glass houses? haha

B0000M
29th June 2007, 18:05
oh shit Boom I'm not going where anyone can watch :yes:
It was bad enough ridin with you guys:whocares:


dont worry, the truth is the fast guys arent watching how badly everyone else rides, their too busy doing their own thing, and everyone starts somewhere