theputz Posted December 30, 2012 Report Share Posted December 30, 2012 Hello, Wanting to build a 421 Serval but don't think I can afford to do a complete build currently. Was thinking about doing the motor now and run it with my stock carbs with airbox and current FMF pipes. If tuned correctly will this harm the motor at all? What kind of power potential would this motor make? Eventually I would like to run Shearer, 35 PWKs and pods but the pocket book is a lil tight. Quote Link to comment Share on other sites More sharing options...
ClayAiken Posted December 30, 2012 Report Share Posted December 30, 2012 It wouldn't be worth it to do it now especially if you cannot afford the carbs. 26mm Carbs would have a hard time feeding the serval the pipes you could run but the carbs i wouldn't Also too small of carbs would kill your performance if you could even get it tuned right, tuning it would be tough. All in all just wait till you have the money to do it all. Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted December 30, 2012 Report Share Posted December 30, 2012 Do it you'll be fine. Stockers can make some power. I think zilla made some power with FMF as well. Are you gonna be hanging with the big boys? No. But you can get the motor to run half decent. Quote Link to comment Share on other sites More sharing options...
Nightmare Posted December 30, 2012 Report Share Posted December 30, 2012 Do it you'll be fine. Stockers can make some power. I think zilla made some power with FMF as well. Are you gonna be hanging with the big boys? No. But you can get the motor to run half decent. X2, they'll do just fine until u can afford that stuff. Sent from my SGH-T679 using Tapatalk 2 Quote Link to comment Share on other sites More sharing options...
dirtydownunder Posted December 30, 2012 Report Share Posted December 30, 2012 x3. stock carbs are good for 80ishhp, the stock carbs on low-mid pipes on a serval rip down low and way torquey in the trails. fmf pipes may hold the serval back some, but they will be fine to run on it. have fun till you can get different pipes. Quote Link to comment Share on other sites More sharing options...
troyzstang Posted December 30, 2012 Report Share Posted December 30, 2012 Have to agree with the majority. Stock carbs are under rated. They do well until you start chasing numbers. Quote Link to comment Share on other sites More sharing options...
lms1977 Posted December 30, 2012 Report Share Posted December 30, 2012 I ride with a guy that has a 421 serval with stock carbs and t5 pipes it runs pretty good Quote Link to comment Share on other sites More sharing options...
rjdgriff Posted December 30, 2012 Report Share Posted December 30, 2012 I ride with a guy that has a 421 serval with stock carbs and t5 pipes it runs pretty good That's how my serval started out... It did just fine. But I would use a dual pingle Quote Link to comment Share on other sites More sharing options...
sprinklerman Posted December 30, 2012 Report Share Posted December 30, 2012 It wouldn't be worth it to do it now especially if you cannot afford the carbs. 26mm Carbs would have a hard time feeding the serval the pipes you could run but the carbs i wouldn't Also too small of carbs would kill your performance if you could even get it tuned right, tuning it would be tough. All in all just wait till you have the money to do it all. ^^^Incorrect on so many levels.. To the OP: Pull the trigger now on the Serval, you can always add upgrades as funds permit. Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted December 30, 2012 Report Share Posted December 30, 2012 Pretty rare that people can buy everything all at once. So go for the serval or even port your cylinders. But in the end for a guy like you the serval would probably be a perfect investment even in stages. However, here is my disclaimer: you do NEED to make sure you do all the internals at once or you will be pulling the motor apart a handful of times to get it right. 1. Quality Crank trued and welded 2. Transmission (stock cut, pro mod, EZ shift) claimed to all be the same but some have slight differences 3. Shifting mods- Modded shift shaft - Modded shift star - Shift Pro 4. Clutch: A lockup is preferred but you can get by with out it for a while. -Fresh basket, hub, and plate - New cushions -Fast or Driveline FZR1000 style clutch. Quote Link to comment Share on other sites More sharing options...
sheerider11 Posted December 30, 2012 Report Share Posted December 30, 2012 ^^^Incorrect on so many levels.. To the OP: Pull the trigger now on the Serval, you can always add upgrades as funds permit. exactly what I thought, but I didn't want to put him down Quote Link to comment Share on other sites More sharing options...
possum Posted December 30, 2012 Report Share Posted December 30, 2012 port ur stock cylinders if u wanna save money. Quote Link to comment Share on other sites More sharing options...
rjdgriff Posted December 30, 2012 Report Share Posted December 30, 2012 Pretty rare that people can buy everything all at once. So go for the serval or even port your cylinders. But in the end for a guy like you the serval would probably be a perfect investment even in stages. However, here is my disclaimer: you do NEED to make sure you do all the internals at once or you will be pulling the motor apart a handful of times to get it right. 1. Quality Crank trued and welded 2. Transmission (stock cut, pro mod, EZ shift) claimed to all be the same but some have slight differences 3. Shifting mods- Modded shift shaft - Modded shift star - Shift Pro 4. Clutch: A lockup is preferred but you can get by with out it for a while. -Fresh basket, hub, and plate - New cushions -Fast or Driveline FZR1000 style clutch. I wouldn't mind having a lockup clutch, but I didn't do any tranny mods when I got my serval, wish I had. If you don't do the tranny mods, you probably won't want a lockup. Quote Link to comment Share on other sites More sharing options...
Paulie B Posted December 31, 2012 Report Share Posted December 31, 2012 I know a guy who ran stock carbs on his 10mil. You'll be fine, start having fun right away. Quote Link to comment Share on other sites More sharing options...
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