Y-pipe cracking

[dktraw]

have any of you guys had your slp y-pipe crack? mine has cracked twice now, and it looks like there are two more starting to show up. getting tired of taking it off and welding it all the time.
will a stock y-pipe fit my slp pipe? if so, i may be looking for one.

 

[IceCap]

I don't have my 900 anymore..... but I broke two y-pipes also, and my dealer and SLP said we haven't seen this before. Really??

 

[Z-Man]

No, you can not use the Stock Y-pipe with the SLP pipe, it will make even less power if you do. You would be better off to swap the whole stock pipe back on and reflash your computer. SLP pipes and can crack all the time on the 900's. Go with CPI or Dyno-Port if you want a pipe or take your stock pipe and have it ceramic coated.
http://www.snowestonline.com/forum/showthread.php?t=260517

 

[IceCap]

Mine broke in the exact same place.... then replaced with a new one and it broke in the same place again.
Then when I put the welded one back on no more breaking.

The metal is just too thin in that area.

 

[dktraw]

yep thats where mine broke. welded it, and it broke again just behind my weld, on the pto side last weekend. but now it looks like there is also cracks starting were the two pipes come together.
i have not had my slp pipe or can crack at all. almost 1800 miles on them.

 

[sleddude]

That was a pic of mine in ZMAN'S post. I told SLP about it and they sent me a new one for free with a new part #2602877 it felt a little stronger not sure though.

 

[dktraw]

how old was your stuff, cause when i called them, they said they would only cover it for 1 year from date of purchase.

 

[sno_mo_racer]

This is what I was afraid of from SLP when shopping for a pipe. Read a few of them or cans cracking so went with Dynoport and am very happy with that decision.

 

[05900]

how old was your stuff, cause when i called them, they said they would only cover it for 1 year from date of purchase.

really? Wow you may need to pull the "let me talk to the boss" bit,but usually they stand behind the product a little closer than that....or so I thought?

 

[dktraw]

well, maybe i need to call them again and be a little more pushy this time.

 

[diamonddave]

This isn't an SLP issue more that it is a sled issue. I've personally had the same thing happen with Dynaport pipes and cans. These 900's shake like there is no more tomorrow. I've seen this happen on 05 900's with stock Y's. I've seen it happen on 6's and 7's running stock Y's. This is why I like to run a little grease on my donut and good springs without slilicon and good quality OEM motor mounts. That way when the motor torques, which is everytime the go flipper is pressed, everything is allowed to flex.

Those 2 springs up under the bottom of the pipe holding it directly to the chassis don't allow any flex when the motor torques. Something has to give.

 

[94fordguy]

This isn't an SLP issue more that it is a sled issue. I've personally had the same thing happen with Dynaport pipes and cans. These 900's shake like there is no more tomorrow. I've seen this happen on 05 900's with stock Y's. I've seen it happen on 6's and 7's running stock Y's. This is why I like to run a little grease on my donut and good springs without slilicon and good quality OEM motor mounts. That way when the motor torques, which is everytime the go flipper is pressed, everything is allowed to flex.

Those 2 springs up under the bottom of the pipe holding it directly to the chassis don't allow any flex when the motor torques. Something has to give.

What effect would not putting silicone on the springs have? I have never done it, but seen many who do... I guess it helps keep the springs from vibrating so much or something, but how would that effect the durability of the welds?

 

[diamonddave]

What effect would not putting silicone on the springs have? I have never done it, but seen many who do... I guess it helps keep the springs from vibrating so much or something, but how would that effect the durability of the welds?

Part of what happens with the silicon in the springs is it limits the springs ability to spread and contract. If the springs are not allowed to flex like designed (with silicon) then when the engine torques (moves up and down and all around which is normal) with a pipe that is sprung to the chassis, something has to give. Repeat this over and over, and that something becomes things like welds on Y-pipes.

This is why you never see exhaust systems in auto's ever bolted down to the frame. Exhaust systems need to move with engine torque (movement) as much as possible.