Hi Guys,

I was just wondering what the difference is between the RcR Top-End pipe and the RcR Midrange pipe? It seems like the desription on the ritter webpage says that the Top-End pipe produces the most power, and it produces it in low end, mid, and top end, is this the case? It also says "Too much for trail conditions". What is that supposed to mean? Can it lower the reliability of a quad? I'm fairly happy with the performance of my 400L from take off until it hits top speed, but it just flattens right out and that's when my friends Banshee can take me. Any help or suggestions would be appreciated. Thanks, Josh.

 

I know what Rick from RCR is talking about when he says "too much for trail". Even the racers (Dave Heider comes to mind) didn't want a race pipe on their highly modified machines. I don't think it's a question of reliability, as much as it is about power delivery. Trust me, with a properly tuned machine, you DON'T want or even need 72 horsepower in the tight woods. Bad things can happen really fast. The top end pipe is mostly for wide open spaces like the dunes or drag racing, where there is plenty of shut down space.

For further advise, I'll need a list of mods you've done to your machine to diagnose the flatspot problem. My Sport had a flatspot on the top end, it turned out that the 38mm Mikuni TMX wasn't flowing as well as the motor could handle. I added a 39mm PWK and the problem was solved. If you still have a stock 34 VM or even a bored carb this could be the case.

Hope this helps!

 

Thanks Mike. I think I may have worded it wrong when I said my quad "flattens out". What I mean, is that I'm sure the it is at top speed, but it just can't beat my friends Banshee which is understandable. He get's me by like 5mph or so. Both quads are completely stock, and when we race I get him good on take off, but he eventually catches me. I'm looking for as much power as I can get, if reliability is not a problem. I ride tight trails, open trails, and open fields, about the same ammount, so it would be nice if I could get a pipe that would not hurt low-end, mid, or top-end at all. I would have suspected that the Top-End pipe doesn't help much with low end, but to my suprise it didn't say that in the description. Does the mid-range pipe have more low end than the top end pipe? Thanks again for your help. It's appreciated.

-Josh

 

Josh,

Ah I see, the "Need for Speed". Well I can certainly help out here. The stock Polaris 400 motor is good for about 36 horsepower @ 5800 RPM. From there the motor starts falling off. Now (I'm looking at the HPD catalog) the trail pipe makes more power than stock from about 3750 RPM till about 7000 RPM when it falls off. Without a Wiseco piston, further modifications, like a top end pipe aren't advised. In fact the top end pipe (and mods) actually makes less horsepower from idle to about 4300 RPM than a trail mod motor.

If you want more speed, you have to have more RPMs. A trail pipe will do this. I wouldn't recomend a race pipe, unless you are going to also put a Wiseco piston in. A little known fact is that it's the RPMs that destroy the stock pistons. Get a motor running above 7000 with a stock piston, and you're "flirtin' with disaster".

Hope this helped!