Everything i read about them on here says that there is no gain by putting these in, so my question is I have a buddy who has a set laying around and said he would give them to me for a few cold ones, is this a waste of my time putting these in or is there actually a small gain by using these.The machine has SLP tripples if this would matter. (He's gonna drink my cold ones either way!!!!!!!)
valin
Active member
You are really not going to gain by putting them in, and will probably add some headaches, since they are not nearly as durable as the stock reeds, and your performance will suffer if they crack or become chipped. The stock reeds flow more than enough for a stock, piped, or even ported motor.
A few cold ones is a great deal though, I'd take them.
A few cold ones is a great deal though, I'd take them.
Triple X
New member
You are going to gain approx. 5hp in the midrange and 3hp on top end, they are a good compliment with the pipes, even better with porting & pipes. If you are getting them for the price of a few beers, well worth it.IMO
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Mac
Member
I respectfully disagree XXX. I believe their will not be any gain in any range. The marketing hype for most reed companies reports a gain of 3-5. I also think poorly designed engine case reeds by other companies can benefit from after market reeds due to bad design. Our Yamaha's have a great design that cannot be improved upon. Several engine builders have reported no gain when installed in SRX and Viper motors. Spend your dollars elsewhere. ---Mac---
Triple X
New member
Mac said:
You believe??? or do you have dyno results? A great design can always be improved upon. Talk to Iantomasi, they are one of Canada's top engine builders and have hundered's if not thousand's of hours of dyno time, I have paid for a few hours myself. I do not believe in marketing hype, just good ole proof.
When Yamaha began factory racing again with their Sno-X Vipers guess what reed induction they used, yes V-force. You can disagree with me, and thats fine as long as you have the facts straight
Mac
Member
Article from Snow Tech -
http://www.snowtechmagazine.com/articles/2003/reedqa/reedqa.php
Q&A quote -
Generally, reeds last longer in Yamaha models than any other brand. We believe this to be due to the Yamaha cage design, a derivative of the TZ250 race engines, and their use of only the highest quality reed materials from Japan.
What sleds seem to respond best to the addition of reeds or reed cages?
Generally the larger engines see more of gain than do smaller ones. While Arctic Cats seem to usually respond the best as a brand, Yamaha engines seem to leave less performance on the table than do the rest when it comes to the reeds.
I have discussed this topic with several highly regarded engine builders. All agree Yamaha's don't respond to after market reeds. I would agree that every race team on every racing surface installs aftermarket reeds. The entire racing community believes that every sled will benefit from after market reeds. Its simply not true with Yamaha. XXX I'm certain you won't be convinced after all the money you have poured into reeds. Most guys will tell you they can feel the power. LOL. ---Mac---
http://www.snowtechmagazine.com/articles/2003/reedqa/reedqa.php
Q&A quote -
Generally, reeds last longer in Yamaha models than any other brand. We believe this to be due to the Yamaha cage design, a derivative of the TZ250 race engines, and their use of only the highest quality reed materials from Japan.
What sleds seem to respond best to the addition of reeds or reed cages?
Generally the larger engines see more of gain than do smaller ones. While Arctic Cats seem to usually respond the best as a brand, Yamaha engines seem to leave less performance on the table than do the rest when it comes to the reeds.
I have discussed this topic with several highly regarded engine builders. All agree Yamaha's don't respond to after market reeds. I would agree that every race team on every racing surface installs aftermarket reeds. The entire racing community believes that every sled will benefit from after market reeds. Its simply not true with Yamaha. XXX I'm certain you won't be convinced after all the money you have poured into reeds. Most guys will tell you they can feel the power. LOL. ---Mac---
Triple X
New member
Mac said:
They did their testing on a stock engine Mac, and yes, I will agree with you on a stock engine with no modifications there will be minimal gains. But if you read my post, I said they (Vforce) were a good compliment to pipes even better with pipes and porting.
Your engine is a air pump, the more air you can put in, the more air that can move through (porting) and the more air taken away through exhaust (3 pipes) the more horsepower an engine will make, pretty simple. With Vforce reeds and their W shaped design, has double the reeds, they are shorter and open less and the total opening area is larger.
The reason Yamaha reeds last longer is because their reed blocks are rubber coated, this cushions the tips from breakage.
Mac, have you ever used a set of Vforce or been present at a dyno session? or is it just hear say? well I have, and again 3-5 in the midrange and 2-3 on top end and that is on a heat soaked engine.
If you have a piped engine or even a piped & ported engine and you are not running Vforce reed induction, then you are leaving performance on the table.
I do not think that Yamaha ran Vforce reeds in their Sno-X Vipers just because the entire racing community did. Yamaha probably did just a little bit of testing to see if they were beneficial.
You can buy a excellent set of Vforce reeds in the classifieds for $100-150, that is a pretty good HP to dollar ratio.
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I agree that the v-force 3's help out, especially if you have your motor ported and piped. I would disagree that yamaha stock reeds are more durable, as i recently pulled my stock reeds from my 00 SRX and they were cracked and busted and pieces MISSING!! I ended up putting the stock reeds that i had from my viper in until i can come up with another $350 to buy a set for the srx.
Concept Carbon
New member
put them in my srx piped viper, didnt notice a thing but just another piece in the puzzle.
I would say only worth the money if your out of things to buy.
I would say only worth the money if your out of things to buy.
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Triple X
New member
Concept Carbon said:put them in my srx piped viper, didnt notice a thing but just another piece in the puzzle.
I would say only worth the money if your out of things to buy.
Did you notice the windage plates and the Bender lite weight hub & rotor?
farmboy4240
Member
In my opion if its a few beers give him the beer put them in and test them out if you dont like them take them out and sell them 100 to 150 dollars is a lot of beer that you could have if you dont like them!
Wether the VForce reeds will add any measureable performance GAINS on a Viper/SRX is definately debateable...but they definately will not give you any measureble performance LOSS either. I say give them a try...you have nothing to loose other then the "Beer" you would share with your Bud anyway!JMO
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The prior owner of my Mnt Viper had installed Boysen Power Reeds when he owned it. When I asked about them, he said he swore by them, making initial throttle response more crisp and more HP through better air delivery. He was a very good mechanic at a Yamaha dealership who took his sleds out west a lot.
I'm no master mechanic and I've never tried my sled with oem reeds in it..... But to those who prefer after market reeds, I say keep using them. I know mine work very well. If you feel they are simply a fashionable mod with little/ no gains over oem, spend your mod dollars elsewhere. My point is, to each their own.........
If you read that last paragraph of the snowmobile mag article, my read of it is that they end up recommending aftermarket reeds. They recommend just reed replacement in single pipe Vipers and replacing the whole reed cage to aftermarket if you have triple pipes installed. I myself am wary of magazine recommendations because they are so beholden to their sponsors/advertisers. Again, to each their own on this one........
I'd actually like to try out oem reeds to see if my power reeds do anything extra. But I probably will never know for sure. All I know is what I read as I've never tried oem reeds out, and I'm not spending a bunch of cash now to go and replace my Boysens since they are already installed and work great.
Oh well, thanks for listening!
Mike
I'm no master mechanic and I've never tried my sled with oem reeds in it..... But to those who prefer after market reeds, I say keep using them. I know mine work very well. If you feel they are simply a fashionable mod with little/ no gains over oem, spend your mod dollars elsewhere. My point is, to each their own.........
If you read that last paragraph of the snowmobile mag article, my read of it is that they end up recommending aftermarket reeds. They recommend just reed replacement in single pipe Vipers and replacing the whole reed cage to aftermarket if you have triple pipes installed. I myself am wary of magazine recommendations because they are so beholden to their sponsors/advertisers. Again, to each their own on this one........
I'd actually like to try out oem reeds to see if my power reeds do anything extra. But I probably will never know for sure. All I know is what I read as I've never tried oem reeds out, and I'm not spending a bunch of cash now to go and replace my Boysens since they are already installed and work great.
Oh well, thanks for listening!
Mike
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777SRX
New member
I have an 01 SRX 700 and I race this sled. When dynoed the reports with Carbon Tech Reeds HT370. were 3hp gain in the midrange and 2 on the top end. I think people need to get their facts straight. Numbers do not lie.