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4Mil Serval Cub air box/filter questions


uman1030

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Have a couple questions, purchasing a 4 mill Serval cub from F.A.S.T and some VF 4's and i was wondering if i should use my 35mm pwks, would this be beneficial or would this rob it of some low end throttle responce? Iif i do use the 35's i know i can get intakes to fit obviously but if i wanted to use stock airbox (no lid) are their boots that can be bought that would adapt the 35 to fit the airbox and would this be conterproductive by decreasing airflow too much. Athough  Id prefer not to use pods on this trail bike as it does occasionally see the random water puddle and soupy mud at the areas I ride. i try to avoid these but depending but sometimes its almost impossible. Im not completely against pods especially if its the best route but i feel that do to my riding environment if possible i should try to keep my filters as dry and mud free as possible for obvious reasons but its difficult at times.Especially at "the Mounds" in MT Morris Michigan. Most of the spring and fall is super wet there especially the wooded areas never seem to dry out.

 

 

 

what are your thoughts on these questions, any advice would be appreciated.

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PODS FTW. Ditch the air box. Get K&N pods with outerwear's. Airbox is just going to kill the power of a motor that big.

I've ridden the entire Badlands after 2-3 inches of rain and they work fine. I even rode the entire length of the river….IN the river!

 

Once or twice a year I'll hit a big puddle and the motor will die (usually after I'm all the way thru) and I'll have to sit for 3-4 minutes till the outerwear's dry off. But that's when I'm telling the "Did you just see that?" story anyways.

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PODS FTW. Ditch the air box. Get K&N pods with outerwear's. Airbox is just going to kill the power of a motor that big.

I've ridden the entire Badlands after 2-3 inches of rain and they work fine. I even rode the entire length of the river….IN the river!

 

Once or twice a year I'll hit a big puddle and the motor will die (usually after I'm all the way thru) and I'll have to sit for 3-4 minutes till the outerwear's dry off. But that's when I'm telling the "Did you just see that?" story anyways.

 

just worries me cause i blew this banshee up with in 2 hours of owning it by hitting a big puddle in the trail. next thing i know i got almost no compression and when i tore it apart it busted both piston rings on both pistons, blew them downward chipping ring grooves and scarring cylinders i assumed since it happen almost immediately from hitting this puddle at wot nearly died immediately that the water hydrolocked it and the compression was so great it blew the rings right off it. Was a  big water filled trench in trail i didnt know about not enough time to stop i just leaned back and wheelied thru it and this was with box and no lid but later inspection showed filter wasnt fit right alowing a gap.

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just worries me cause i blew this banshee up with in 2 hours of owning it by hitting a big puddle in the trail. next thing i know i got almost no compression and when i tore it apart it busted both piston rings on both pistons, blew them downward chipping ring grooves and scarring cylinders i assumed since it happen almost immediately from hitting this puddle at wot nearly died immediately that the water hydrolocked it and the compression was so great it blew the rings right off it. Was a  big water filled trench in trail i didnt know about not enough time to stop i just leaned back and wheelied thru it and this was with box and no lid but later inspection showed filter wasnt fit right alowing a gap.

Well that's a big difference compared to wet filters. Wetting filters just smothers the motor. Submerging filters and hydro locking of quenching hot parts is a fail either way. An air box is just a bathtub your carbs sit in. You dunk that air box and you'll be in deep shit too! The Carbs can suck the air box empty faster than that little drain on the bottom and drain it all out. mild bolt-on modded motors lose power with the air box lid on, so a Serval is going to choke!

 

You wanna treat your machine like a jet ski……buy a YFZ450, leave the air box lit on and don't do any power mods. Otherwise…. K&N's with the water repellant Outerwear's is the ticket.  :clap:

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Well that's a big difference compared to wet filters. Wetting filters just smothers the motor. Submerging filters and hydro locking of quenching hot parts is a fail either way. An air box is just a bathtub your carbs sit in. You dunk that air box and you'll be in deep shit too! The Carbs can suck the air box empty faster than that little drain on the bottom and drain it all out. mild bolt-on modded motors lose power with the air box lid on, so a Serval is going to choke!

 

You wanna treat your machine like a jet ski……buy a YFZ450, leave the air box lit on and don't do any power mods. Otherwise…. K&N's with the water repellant Outerwear's is the ticket.  :clap:

 

 

ya it wasnt submerged at all.  puddle was about 6-8 inches deep max it wsa from a truck offroading at our track. where i ride mostly is a track built by the guys from Magics motorsports in watorford michigan its across the street from them in an empty square mile lot of woods and fields. theres an mx track and also and also some endurance woods trails for bikes as well as a bunch of two tracks.

 

i just got a little spray off it. so im going to assume that cause the gap in the air filter it took on alot more water then a properly fitted filter would let in.

 

Also i dont run a lid on the airbox. its completely open with a K&n filter

 

i may just run pods then like i said im not opposed to it. sure would make working on carbs easier.

 

How about the 35mm carb question do you think this would decrease low end throttle response and do you think its necessary to prvide that much fuel to the serval?

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35PWK is the preferred carb for that motor. 

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Well this bike should be a screaming trail machine now. Ordered a ton of shit from site sponsors and a few members this week. spent most of my Christmas bonus SHHH i wont tell if you dont lol...

 

parts from Jeff at FAST

Serval Cub Cylinders - 68/58 4mm * Christmas Special *
1 Cub Kit w/ .012" Base
2 Cub Base Nut
2 Wiseco 573M06800 (Cub)
1 25cc Cub Domes ??????
1 V-Force 4 Reeds - Banshee * Christmas Special *
1 Banshee Complete Seal Kit * Christmas Special *
1 Banshee Clutch Gasket
1 Water Pump Gasket
1 Eccentric Stud
1 Eccentric Stud Lock Washer
1 Folding Lock Washer
1 Heater Pipe O-Ring
1 Idler Clip
1 set 6" Filter *Need Oiled* * Christmas Special
1 Set 6" Outerwear - Black
1 1211 Sealer

 

ATV Galaxy

Stage 3 Elka front and rear shocks set up for Alba Long travel +2+1 A Arms and +4 swinger

 

 

alot of other odds and ends im looking at also Truthfully i think it may be cheaper to build cars or at the least not more expensive...

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