midlifecrisis Posted February 8, 2011 Report Share Posted February 8, 2011 Only one of these setups actually sounded like it could even be a trail setup. One guy even said he was running cheetah 421 heads? WTF? Thats what I was thinking, thats why I said my carbs were too big for trails. Id stick with a 30mm carb max, and a trail or MX port on a stock stroke, it just depends on the trails. Quote Link to comment Share on other sites More sharing options...
blackedout96 Posted February 8, 2011 Author Report Share Posted February 8, 2011 Only one of these setups actually sounded like it could even be a trail setup. One guy even said he was running cheetah 421 heads? WTF? lol, ya my main question I guess is what is the strongest motor you can build and still be trail friendly... I've had just about every set up you can get with stock cylinders and so far the drag port is really the only one that isn't trail friendly for obvious reasons. So far the power curve on the serval cylinders looks about as perfect for my application as you can get with aftermarket cylinders. If I stick with stock cylinders I'll probably stick with the 4mill bottom end and an RB dune port. I've seen how their stock stroke runs and can't believe more people don't have work done by them. Nobody ever believes JD's motor is a stock stroke, including me, lol but it is. Quote Link to comment Share on other sites More sharing options...
bbcmudtruck Posted February 8, 2011 Report Share Posted February 8, 2011 Hahaha... Well last summer I ran a drag ported 10mil cub on a -1 swinger in the trails. It was an absolute blast. In fact it was so fun, I'm currently building a 10mil serval for my trail bike as we speak. Go 10mil or go home! Quote Link to comment Share on other sites More sharing options...
blackedout96 Posted February 8, 2011 Author Report Share Posted February 8, 2011 Hahaha... Well last summer I ran a drag ported 10mil cub on a -1 swinger in the trails. It was an absolute blast. In fact it was so fun, I'm currently building a 10mil serval for my trail bike as we speak. Go 10mil or go home! What are you doing as far as the tranny and clutch with the 10 mill serval? Quote Link to comment Share on other sites More sharing options...
too_fazt Posted February 8, 2011 Report Share Posted February 8, 2011 Hahaha... Well last summer I ran a drag ported 10mil cub on a -1 swinger in the trails. It was an absolute blast. In fact it was so fun, I'm currently building a 10mil serval for my trail bike as we speak. Go 10mil or go home! lookin forward to the power output of a 10 mill serval... thats nuts! Quote Link to comment Share on other sites More sharing options...
87sheerips Posted February 14, 2011 Report Share Posted February 14, 2011 lol, ya my main question I guess is what is the strongest motor you can build and still be trail friendly... I've had just about every set up you can get with stock cylinders and so far the drag port is really the only one that isn't trail friendly for obvious reasons. So far the power curve on the serval cylinders looks about as perfect for my application as you can get with aftermarket cylinders. If I stick with stock cylinders I'll probably stick with the 4mill bottom end and an RB dune port. I've seen how their stock stroke runs and can't believe more people don't have work done by them. Nobody ever believes JD's motor is a stock stroke, including me, lol but it is. Lol, Mikey if you like how mine runs why dont u go the same route? It's cheap, reliable, and it performs. You cant get a better package for an all around motor you are going to beat the PISS out of. I mean you can get a trued/welded stock stroke crank used for like $150.. How can u beat that?? Run whatever carbs you get a deal on.. 28's, 33's, 35's whatever... T5's, CPIs, whatever lol.. Run it rich and hammer down, youll have an easy 4 seasons before opening up the cases or top end. Dont spend all that money on servals man, then what happens when you fuck up and have to re-plate.. $$$. Its a trail motor, yur not racing the thing for money brotha Just keep some things in mind so your wallet can be as happy as your adrenaline rush Quote Link to comment Share on other sites More sharing options...
blackedout96 Posted February 14, 2011 Author Report Share Posted February 14, 2011 Lol, Mikey if you like how mine runs why dont u go the same route? It's cheap, reliable, and it performs. You cant get a better package for an all around motor you are going to beat the PISS out of. I mean you can get a trued/welded stock stroke crank used for like $150.. How can u beat that?? Run whatever carbs you get a deal on.. 28's, 33's, 35's whatever... T5's, CPIs, whatever lol.. Run it rich and hammer down, youll have an easy 4 seasons before opening up the cases or top end. Dont spend all that money on servals man, then what happens when you fuck up and have to re-plate.. $$$. Its a trail motor, yur not racing the thing for money brotha Just keep some things in mind so your wallet can be as happy as your adrenaline rush brother your trying to get me to make a responsible choice here, damn it you know I'm not good at that! hahahaha... As indecisive as I am, who the hell knows what I'll end up with. Stock cylinders would certainly be the most reasonable route and we know how insanely hard they can run whether it's a dune port or a drag port from the right builder. When I woke up this morning I was ready to buy a serval, now my wheels are turnin again, DAMN YOU! Quote Link to comment Share on other sites More sharing options...
87sheerips Posted February 14, 2011 Report Share Posted February 14, 2011 brother your trying to get me to make a responsible choice here, damn it you know I'm not good at that! hahahaha... As indecisive as I am, who the hell knows what I'll end up with. Stock cylinders would certainly be the most reasonable route and we know how insanely hard they can run whether it's a dune port or a drag port from the right builder. When I woke up this morning I was ready to buy a serval, now my wheels are turnin again, DAMN YOU! Well, since the sleds are about to be put away you have plenty of time to think LOL Quote Link to comment Share on other sites More sharing options...
bbcmudtruck Posted February 14, 2011 Report Share Posted February 14, 2011 What are you doing as far as the tranny and clutch with the 10 mill serval? 1-5 duneable, DD lockup. Quote Link to comment Share on other sites More sharing options...
T_Shee Posted February 14, 2011 Report Share Posted February 14, 2011 it is kind of a balancing act trying to find something you can be competitive with drag racing friends and also ride in tighter trails. from what everyone is saying the serval sounds like the closest you can get to the best of both worlds. but for those of us who cant afford that getting good port work on a set of stockers is the way to go (or buying them already ported). i have k&t dune ported 4 mil with r2 and 35 pwk and i like how it runs so far. im pretty high on compression, should help it a ton on trails. 1 Quote Link to comment Share on other sites More sharing options...
camatv Posted February 14, 2011 Report Share Posted February 14, 2011 i ran 41.3/44 alky lectrons on the 485pv motor it would lug up any hill and i could stab the throttle at ANY rpm and it would wheelie without the clutch having to be "poped" ( thats also what made it scary) i have noticed that alky in trail is a LOT of fun. you have to be able to tune and realize that alky DOSENt HAVE TO BE PIG RICH TO RUN . its just another fuel it has its lil quirks but hey what fuel dosent? if i can ever get a helmet cam i want to take a vid in the sticks of my 421 stocker on alky and post it. i think the ride vid would show its got excellent trottle response it dosent load up and its got a shizz ton of bottom end i rode a 350cc stocker with massive porting and alky 35's in the trails, and tree shooting with a +8 arm it was a lot of fun. it wasnt tight tight trails but the acceleration up the dune and through the tree shots was a LOT of fun. i had a 35o cc stocker with straight 36mm lectrons and fmf sst's and a "drag" port it was a blast also. didnt have to be screamed around and was set up on pump gas. that was a fun motor... Quote Link to comment Share on other sites More sharing options...
10milmike Posted February 15, 2011 Report Share Posted February 15, 2011 I have 10 Mil cheetah in a stock frame. I kept my PV in the because I do like to dune it. It is way to much bike for a dune bike. But hey I can ride it to the hill and smoke people all day. I have 39MM carbs. shearer inframes 73.5 cheetah motor stock tranny "Sucks" 8" swing arm 2+ 1 A arms..!!! Wish I know how to post pics from my driod. Quote Link to comment Share on other sites More sharing options...
STINKYDELUXE Posted February 15, 2011 Report Share Posted February 15, 2011 (edited) 521cc 10mil super cub, cpi inframes, 39pwk, 8 disk clutch, 6" and 4" swingarm with the 6" it spun tires most the time with the 4" handled a lot better with realitor tires running 110 race gas. as seen in my sig Edited February 15, 2011 by STINKYDELUXE Quote Link to comment Share on other sites More sharing options...
Rossman383 Posted March 5, 2011 Report Share Posted March 5, 2011 I"m going to start putting my 421 Serval Wampus together tomorrow. The parts list is as follows: Black Modquad Cool Head with 20cc big bore domes Hot Rods +4mil crank Serval Wampus jugs powdercoated black (super sleeper style, I'm sneaky like that hahaha) 39 pwk's Modquad water pump impeller KG clutch kit 15/41 gearing Dyno Port 2 into 1 for now, love the sound but i know i'm choking a solid 10+ hp out with it so Rockets will get ordered soon I've got a few questions though.... 1) With the 20cc domes what octane fuel will be sufficient? i'm going to be below 1500 ft so my compression will be under 170 psi. 2) Everywhere i've read i've seen that the big carbs are going to be ok, but i'm a little skeptical. i had a single 35 pwk so i could always switch to twin 35's for a couple more bucks. any advice? I"m going to run a standard clutch for now, i'll spread the word on how long it will hold up before a grab a Slingshot Lockup. Quote Link to comment Share on other sites More sharing options...
camatv Posted March 5, 2011 Report Share Posted March 5, 2011 before you even put it together ditch the PIPE it will absolutely SUCK NUTS. and also get a matton billet basket. if you use a stocker i would imagine it will exploded and you will be spending more $$$ on parts you didnt need in the first build. spend the time and $$$$ to build the bottom end RIGHT THE FIRST TIME or you will be throwing money at it all the time.. HIGHLY suggest TZ bearing on drive side at least. 535 pv motor would be a LOT of fun even with 28pwk's or 30mm lectrons!! Quote Link to comment Share on other sites More sharing options...
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