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Pipes for serval


tfaith08

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So change of plans.  Cam is going to test the engine with both CPI and Snipers.  Since the Snipers are 8-10 weeks out on shipping (no plating offered from SRP so add that time in) and FAST can have CPIs out in a day, I'm going to do the build with CPIs and buy Snipers when I have everything ready to roll.  That way I can get a no shit answer on what I personally like the most.  If they're both close enough to my liking, I'll sell whichever one I can get the most money for.  I'll take a hit on them, but I can recoup that in half a day of overtime.  I can justify 6 hours of work to see what makes me faster.

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So change of plans. Cam is going to test the engine with both CPI and Snipers. Since the Snipers are 8-10 weeks out on shipping (no plating offered from SRP so add that time in) and FAST can have CPIs out in a day, I'm going to do the build with CPIs and buy Snipers when I have everything ready to roll. That way I can get a no shit answer on what I personally like the most. If they're both close enough to my liking, I'll sell whichever one I can get the most money for. I'll take a hit on them, but I can recoup that in half a day of overtime. I can justify 6 hours of work to see what makes me faster.

You're planning to ride MX with this bike and motor, right?
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Yep, MX.

I don't boubt the Snipers will win, but I'm going to base my decision off of what I like the most.  I'm blowing anyone off, it's that I want to make the DT ride and can't do it with Snipers becuase of the lead time.  If I was blowing anyone off, I wouldn't be ordering the Snipers when I get it back running.

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Yep, MX.

 

I don't boubt the Snipers will win, but I'm going to base my decision off of what I like the most. I'm blowing anyone off, it's that I want to make the DT ride and can't do it with Snipers becuase of the lead time. If I was blowing anyone off, I wouldn't be ordering the Snipers when I get it back running.

Let's have a little reality check here for a minute.

 

With either the Snipers or CPI, you're looking at about a 95hp +/- motor.

 

Most ameture and pro level mx riders are on bikes building around 55-60 hp.

 

We both know that unless you're riding some very high speed and wide open tracks, that you will never come even close to using that much power.

 

The goal needs to be what pipe, weather Snipers, CPI or some other pipe, will offer the most ridability for the type of tracks you're on the most.

 

I'm assuming that Cam knows how you intend to use this motor?

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Yes, I'm aware that I'm going to have entirely too much power lol.

I told cam that I want to have enough power to do anything I needed it to anywhere in the RPM range and that bottom end and lower midrange was what has been holding me back.  We talked about a ported stock cyl on race gas, but he said that there was no contest to what an MX ported serval on race gas could do when it came to a wide powerband.  I'm assuming that this is why he recommended the CPIs over Shearers. 

 

He said CPIs would probably do well but that I may want to research other pipes and that's exactly what I intend to do.  He also recommended 33-35pwks becuase 28s have been known to suck the bowls dry in rough sections and there would be no loss in bottom end and midrange with 33/35 as opposed to 28s.

 

Will I ever be good enough to utilize 90hp?  No.  60hp?  No. 

 

I also considered that I'd probably have more bottom end with a 10mil super serval, but if a 421 won't do the trick, I'm doing something wrong that a larger engine won't fix.

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I would bet SLP would out shine Snipers on the bottom end.

 

I'm not so sure about that.. It was always said that the Servals actually needed a "top end" pipe to make them work really well.

 

The port timing of the Servals are low as is, so they don't really need any help in that department.

 

Actually, I think it may have been Gary at Sniper who said that.. And so far, Snipers have worked well on the Servals.

 

One thing I know for sure is that the SLP will sign off a lot sooner on top than Sniper, CPI or Shearer.

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I'm not so sure about that.. It was always said that the Servals actually needed a "top end" pipes to make them work really well.

 

The port timing of the Servals are low as as, so they don't really need any help in that department.

 

Actually, I think it may have been Gary at Sniper who said that.. And so far, Snipers have worked well on the Servals.

 

One thing I know for sure is that the SLP will sign off a lot sooner on top than Sniper, CPI or Shearer.

Yes I do remember reading that. My way of thinking is he will never get close to top RPM on tight tracks and that's where the SLP will be better.

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I'm going to be dialing it in on a dyno. If someone wants to send some pipes for me to try, I'd sure make a few pulls.

 

 

Sent from my iPhone using Tapatalk

tfaith08, I'm on pretty much the same quest as you.

 

Cam has built me a 5 mil race gas Serval. He did not fully assemble it per my request. I still have to do final assembly and all that.

 

It was my intention to have him dyno it last summer when I made my annual Oregon dune trip. I wasn't able to make the trip happen. I still need to assemble the motor currently.

 

My last motor setup was a stock cylinder Duncan 403 motor using PT High Revs. 5 mil stroke, 66mil bore.

 

Cam ported it and cut domes specific to my intended ride style and with the idea of using the PT High Revs and focusing on low and mid range power.

 

The hope is that the higher flow nature of those pipes will allow my motor to run strong in the bottom and mid for track riding and allowing it to breath like a Serval needs. We both fully understand the PT's are not going to let it rev out on top and build peak power like the Snipers will. But, back to the reality check, even if my motor is restricted by those pipes somewhat, it will still very likely build low to mid 80's for peak hp. Still way more then enough for track riding.

 

If I find the PT High Revs to be a letdown then my plan is to go to Snipers assuming they will cooperate with my Laeger chassis.

 

I'm speculating that I will end up using the PT's for track riding and have it tuned accordingly, and then i will run Snipers for dune trips again tuned accordingly.

 

My carbs are 35 pwks that are bored to 36.5.

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It would be for information only. I don't think the SLPs would make as much in the midrange or top end as many would assume.

 

Hard information is better than strong speculation though. I'll try it out but I won't be buying them just to know.

 

 

Sent from my iPhone using Tapatalk

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