Got mine installed on my Assault boost this week. Took a little bit to get the extra spring on the bottom but it really wasnt that bad. Used one spring puller tool to push the spring from the front and stretch it out, then another one to grab it and hook it on over the loop on the y pipe. Minimal cursing involved.
TRS boost power valve
- Thread starter madmax
- Start date
just completed the p85 swap with Tony's kit on my boost. i installed the boost valve earlier. curious to know what are people that have done this seeing for engagement rpm? thank you.
I don't think engagement rpm would change?
Why would engagement rpm change? Your engagement rpm will depend on your primary spring weight.
Jesus. I installed the trs clutch kit with the p85 on my 22 boost. I am pretty sure rpm will be different lol.
Because the thread is about the trs valve.
Which will not affect engagement rpm.
Your post wording isn't clear.
My engagement rpm didn’t change after I installed the trs boost valve.
Back to the TRS valve in the TRS thread.
First real ride yesterday in the mtns. First real ride in two years due to injury. During the initial part of the ride I was starting to think the TRS valve didn’t do much. Sled ran well and wasn’t laggy - but after so long off sleds I was remembering that’s how a stock boost ran … then my buddy and I switched back to back with a stock boost for comparison.
He’s getting a TRS valve Monday.
First real ride yesterday in the mtns. First real ride in two years due to injury. During the initial part of the ride I was starting to think the TRS valve didn’t do much. Sled ran well and wasn’t laggy - but after so long off sleds I was remembering that’s how a stock boost ran … then my buddy and I switched back to back with a stock boost for comparison.
He’s getting a TRS valve Monday.
I have officially given up on trying to add an extra spring. even with this extra long solid spring puller I couldn't find a way to push, pull or muscle them in there.
On a positive note, i noticed that the sled had the wrong spring on the back of the stock can. I bought it lightly used, so no idea if it was like that from factory or if the previous owner did it. Thankfully it was one of those same springs, so threw that one on there.
The one that was on it was too long and would have rattled and possibly fallen off, so I am glad I noticed it, heh.
****, i was thinking the same thing after not riding my sled within a few months of installing the valve, then i watched a video with a stock boost riding, and was like holy **** lol.
Got a few miles on my Assault over the weekend and I can definately tell a difference. Throttle response is a lot better and the small hiccup that used to be there when stabbing the throttle is gone. Overall I'm very satisfied. I will be installing another one on my Pro over the next little while.
This is interesting, My 2 cents on this.Hopefully they don't "legally" steal it.
Perhaps Polaris might start using the piston design.
But then again maybe not, being that SKI DOO / BRP decided not to use a Reed in their airbox and has been using this piston type valve long before Polaris ever built a turbo sled. The only major airbox inlet difference from the Skidoo to the Polaris is the airbox bolt pattern.
However the skidoo piston valve is all injected molded plastic and pretty low cost unlike machining them out of aluminum. the skidoo valve cannot be purchased separately to my knowledge you have to buy the airbox and the complete package with the piston valve last time I looked 4 or 5 years ago it was around $120 for both the valve & airbox.
Polaris has decided to buy a few things from skidoo…….one being electric reverse, then there was sum watercraft hull design bargaining if I remember right…….. not positive about that. ( They should buy the “ SHOT “ Technology )
Polaris might keep the reed, or maybe they do switch to the piston style but since Skidoo did not patent it Polaris will most likely just copy skidoo and injection mold it to keep cost low….. I can’t see them ever making one out of aluminum.
One most keep in mind that that under boost pressure just past idle both the reed and the piston valve are smashed completely closed and stays closed until boost goes to absolute zero.
On a naturally aspirated sled this is not true….on a n/a sled the valve would be open mostly al the time.
Wide-open-Horse power Is the same.
Unlike a Motor reed valve that is wide-open exactly 50% of the time and completely closed 50% of the time.
I would agree that just off idle the piston design is a little better.
Getting away from just off-idle thinking……… and thinking of WOT ( wide open throttle )
And thinking on the actual Motor itself in front of the throttle-bodies or Carbs.
I would guess the piston design would out flow the reed if it was actually as long as these airbox valves……. ( But we can only dream because the piston design is far to long and there is not enough room in modern day sleds for the piston design )
In reality if it was on the motor side the piston valve would most likely destroy itself fast from slamming back and forth even at low rpm.
The modern day reed is pretty amazing considering they are used from zero to 10,000 rpm’s
My 2 cents might be to much.
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It is a little ironic to see a near copy of the TRS airbox valve for sale on your website for less money.This is interesting, My 2 cents on this.
Perhaps Polaris might start using the piston design.
But then again maybe not, being that SKI DOO / BRP decided not to use a Reed in their airbox and has been using this piston type valve long before Polaris ever built a turbo sled. The only major airbox inlet difference from the Skidoo to the Polaris is the airbox bolt pattern.
However the skidoo piston valve is all injected molded plastic and pretty low cost unlike machining them out of aluminum. the skidoo valve cannot be purchased separately to my knowledge you have to buy the airbox and the complete package with the piston valve last time I looked 4 or 5 years ago it was around $120 for both the valve & airbox.
Polaris has decided to buy a few things from skidoo…….one being electric reverse, then there was sum watercraft hull design bargaining if I remember right…….. not positive about that. ( They should buy the “ SHOT “ Technology )
Polaris might keep the reed, or maybe they do switch to the piston style but since Skidoo did not patent it Polaris will most likely just copy skidoo and injection mold it to keep cost low….. I can’t see them ever making one out of aluminum.
One most keep in mind that that under boost pressure just past idle both the reed and the piston valve are smashed completely closed and stays closed until boost goes to absolute zero.
On a naturally aspirated sled this is not true….on a n/a sled the valve would be open mostly al the time.
Wide-open-Horse power Is the same.
Unlike a Motor reed valve that is wide-open exactly 50% of the time and completely closed 50% of the time.
I would agree that just off idle the piston design is a little better.
Getting away from just off-idle thinking……… and thinking of WOT ( wide open throttle )
And thinking on the actual Motor itself in front of the throttle-bodies or Carbs.
I would guess the piston design would out flow the reed if it was actually as long as these airbox valves……. ( But we can only dream because the piston design is far to long and there is not enough room in modern day sleds for the piston design )
In reality if it was on the motor side the piston valve would most likely destroy itself fast from slamming back and forth even at low rpm.
The modern day reed is pretty amazing considering they are used from zero to 10,000 rpm’s
My 2 cents might be much
Polaris Boost Billet Air Intake | Indy Specialty
Polaris Boost Billet Air Intake BRP inspired billet air intake that eliminates the factory air box reed and replaces itwith a spring loaded air bell Key Improvements1. Increase of air flow compared to stock reed valve2. Increased Sealing Power, Valve seals instantaneously due to it's spring...
www.indyspecialty.com
And the TRS airbox valve also for sale there.
Edit: it's not there anymore.
Still a ghost on google search.
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Well Sheetmetalfab that’s is a fair way to look at it.It is a little ironic to see a near copy of the TRS airbox valve for sale on your website for less money.
And the TRS airbox valve also for sale there.
Edit: it's not there anymore.
What happened sometime around the Indy Specialty Black Friday sale we have every year is we had products on sale including the Polaris version of the Skidoo/BRP airbox piston style TRS valve because we thought it would be good to get more of them into the Polaris boosts at a lower price where we not even making any profit on it…….
Indy Specialty was contacted by Tony……I was not there ( not sure exact date and time ) But Indy Specialty was informed that if we didn’t raise the price back up to full retail that we would not be sold any more products.
So the instructions that were given to raise the price were honored.
We raised the TRS Polaris version of the piston style valve back up to full retail.
I was informed of this by my guys of this.
That was the point I decided that Indy Specialty was going to build a Polaris version of the Skidoo / BRP airbox valve because it seemed to me I could do it faster and sell at a lower price.
This is America, a free enterprise capitalistic country.
Thee is no Skidoo / BRP patent on the piston style valve, and there is no TRS Polaris version Patent of the piston style valve.
Keep in mind this is a very simple checked valve, i came from the Gas / Diesel Portable air compressor industry and this style check valve was, and is still used in thousands of Portable compressors.
It’s called an unloaded valve by some manufactures, The valve is 100% wide open when you start the compressor until the storage tank is filled then the piston valve closes to about 99.9% the small amount of air the slips by is recirculated back into the intake system the small air in the unloaded helps keep the valve from rumbling,
This valve is a simple 1 way piston style check valve it is far from the space shuttle.
Skidoo / BRP did not invent the piston style valve, TRS did not invent it, Indy Specialty did not invent it.
Indy Specalty has been building 800 Skidoo / BRP Billet connecting rods and complete motors since 2014 for Mountain Magic Snow Machines for the failing Connecting Rods XM800 motor.
We also starting selling the XM-800 & 850 motors in the U.S. in our shop and doing chassis removal & installs.
in 2021 we had a customer drop off a Skidoo 850 Turbo for some motor work, at some point he noticed the airbox Piston style inlet valve.
Skidoo / BRP has been using the Piston airbox style valve before Polaris released a Boosted sled.
That being said.
We did have both the TSR & Indy Specialty version of the Skidoo/BRP piston valve on the website at the same time. We were notified by TRS and told they were not going to sell us anymore product since we…… exact words by Tony were ( “ you are copying MY valve “ )
I personally do not see it that way.
On the day I decided to build a Polaris version the piston style valve it was 7am, We scanned in a OEM Polaris airbox Reed valve in a $100 Walmart H.P. copy machine to get the bolt spacing pattern and the inside and outside size of the rectangle.
Once that was done the full CAD model drawing was done in I would say an hour which is basically a round hole going to a square hole to the required size then extruded up. Then it was run thru our CAM software to generate the tool paths and then dumped into one of our Hurco Mills and the 1st valve bodies was done by Lunch…. This is not a complex part to build.
The Indy Specialty polaris version of the Skidoo / BRP piston valve was designed with a sealing step on the round side so no gasket is needed, and the square side was designed with a full o-ring groove so no gasket is used on that side either.
The TRS Polaris version of Skidoo / BRP piston valve uses 2 big rubber gaskets on each side.
if the public masses feel Indy Specialty should not sell at a lower price better value and should raise the price to be the same as the TRS Polaris version I would consider that….. seems strange but I would consider.
Or maybe the Public masses feel Indy Specialty should not build a Polaris version of the Piston valve at all ?
If that seems true then Indy Specialty would consider stopping production.
I think in-have known Tony for over 20 years and he was never in the snowmobile parts selling business. Then last year a website pops-up selling clutch kits and other sled parts……..
Awesome ! It’s America and we are all free to follow the American dream.Free enterprise & capitalism is our great system ( it’s what keeps price in check and quality high ) and gives the consumer choices.
That being said Indy Specialty has been in The sled business for 39 years….. we all have homes, and kids, and sum have employees to pay.
Once you start a Snowmobile website and start a Facebook page and start selling sled parts then it is simple competition, nothing personal it’s just business.
Maybe I am all wet here…..and not thinking correctly from how America works.
I still think it’s very strange that Tony & TKI Tom both called me and balled me out about making a Polaris version of Skidoo’s airbox valve and it seems they should have the exclusive rights building a basic piston chk when Skidoo was the first to do it.
A few years ago when the 2022 Polaris boost were breaking throttle-body intake manifolds….. we started building them the second we heard the first one break because we knew Polaris would run out of inventory fast and new boost sled owners would beached.
I believe we had it out first…… but if we didn’t who cares.
Within 1 month at least 4 Sled shops were pounding these billet intakes all over Facebook.
I don’t believe any of the first four shops building these ever called each other out balling them out that it was ( “ THEIR valve “ )
One step farther……. Silber Turbo Systems went on our website and bought a manifold of ours at full retail.
We saw the sale and called him and said Hey Justin we saw you bought a manifold at full price…..thinking he might start selling volume we offered him a volume deal at a better price.
He simply said no thanks..
We still laugh about this at the shop……
We said he’s going to copy it and start selling it on his site.Silber took a picture of our manifold put it on his site within days and it’s still on his site…… and he has never bought another one.
He could have bought a Polaris one and copied it …….. but he bought ours….. at least we sold him one
My guess is he had a broken one and needed it fixed fast before he had time to get them built.
Not a big deal, it business and life…… there are rrwly patents on most Sled parts because the volume is way to low.
Sled parts are not IPhones……… there is not over a billion buyers out there.
if the masses think Indy Specialty is way out of line here I will consider not building another run when inventory runs out.
I really did not want this to be a hard feeling thing , Business is complex and brutal sometimes..
Ford, RAM, Chevy…… are all fierce competitors and never stop chasing more and more buyers and supplying them the biggest variety of options.
I did not spell chk or proof read so I expect errors .
Skidoo / BRP air box piston valve pics attached.
Sorry for being long winded.
Attachments
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Yep, I was pissy but that was a little bit different.
The Turbo 2 and Turbo 3 was First clutch weight designed to be Turbo specific……. And I checked into a patent and everyone I asked said it’s a waste of time.
Every shop and friend I asked said……. Other shops will simply change 1 little thing to get around the patent and if you get into a court battle it will cost more money then you would have ever made selling a snowmobile clutch weight.
There just is not enough volume.
You are correct was a little pissy…… but I did not have a patent and I was sh!t out of luck.
I got over it and moved on & built many other clutch weights for the sled & UTV market.
I just don’t get worked up anymore it takes to much energy…… much easier to just be happy and keep pushing to make new things.
Most likely selling the shop in 2027 and then I will vanish
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