dburnexx Posted January 6, 2015 Report Share Posted January 6, 2015 i was wondering if going to a 4 mil but keeping my stock cylinder will get me off race gas and back to pump 91 with out loosing power last time it was dynoed it was just shy of 70hp but i have seen the servals on pump gas with 80+hp theses are my mods Drag ported stock cyl case ported to match cyl vforce 4 reeds pod filters cool head with 18cc domes toomy t5 pipes stock carbs with tors deleted hot rod stock length tru welded crank +4 timing new water pump large aftermarket radiator temp gauge on vp110 race gas mixed 50:1 with amsoil dominator oil I really dont need much more power because it is a trail bike i just want to get of vp110 and back on 91 pump gas. thanks Quote Link to comment Share on other sites More sharing options...
dburnexx Posted January 6, 2015 Author Report Share Posted January 6, 2015 I forgot to say i am at 165 compression Quote Link to comment Share on other sites More sharing options...
trickedcarbine Posted January 6, 2015 Report Share Posted January 6, 2015 You can definitely make equal to or more power by going to a 4mm. You can also switch your current set up by just having differnt domes cut. Quote Link to comment Share on other sites More sharing options...
dburnexx Posted January 6, 2015 Author Report Share Posted January 6, 2015 the only reason i wanted to go 4mil was to get back to pump gas and keep the power i already have i didnt know if it was possible. I really want a serval but dont have the funds. so this is the next option Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted January 6, 2015 Report Share Posted January 6, 2015 You are way shy on hp for a drag ported cylinder , you should pull the jugs and send them to someone who knows what's going on, 70 on pump is a real and obtainable goal Quote Link to comment Share on other sites More sharing options...
sleeper06 Posted January 6, 2015 Report Share Posted January 6, 2015 No need for a 4 mil for that number plus your cylinders if drag ported are too far gone for 4 mil crank 1 Quote Link to comment Share on other sites More sharing options...
Larry's Shee Posted January 6, 2015 Report Share Posted January 6, 2015 Can't be much of a drag port if it's trail ridden and T-5s. Have you considered dropping 21-22cc domes in first and see if you even like it? Or as stated, send it off and see if something can be done with it either with or without a 4mil Quote Link to comment Share on other sites More sharing options...
Dixie normus Posted January 6, 2015 Report Share Posted January 6, 2015 I ran 19cc domes on pump gas. At 165 psi you are not far from pump gas compression. Get it down in the low 150's and pump should work Quote Link to comment Share on other sites More sharing options...
troyzstang Posted January 7, 2015 Report Share Posted January 7, 2015 If I were you I would PM Surfjag ( Justin ) He 's producing some impressive numbers on stock cylinders. If your cylinders are set up wrong he may have something that can work for you. Either way he WILL get you set up for a more then fair price. Great guy that won't empty your pockets. Good luck. Troy 1 Quote Link to comment Share on other sites More sharing options...
dburnexx Posted January 7, 2015 Author Report Share Posted January 7, 2015 Thanks for all the help. I talked to Jeff at FAST and he is setting me up with a 392 serval (stock stroke serval) to kinda keep it the build in my price range. he said i should produce a more wide rage of power and be on pump gas with mid to low 70s easily which is great since it is mostly a trail bike and I really wanted to stay with a stock length swinger. plus the 392 runs best with toomy t5 pipes which i already have. Quote Link to comment Share on other sites More sharing options...
Nightmare Posted January 7, 2015 Report Share Posted January 7, 2015 The 392 runs best with t5's? 1 Quote Link to comment Share on other sites More sharing options...
BUILDER Posted January 7, 2015 Report Share Posted January 7, 2015 You really should do some more research before you go and do what you are telling us. Might want to talk to a few more builders and get more options. Not saying anything bad about Jeff but there has been a lot of testing done on the serval cylinders so make sure you are doing the research you need to before you spend your money Quote Link to comment Share on other sites More sharing options...
n2otoofast4u Posted January 7, 2015 Report Share Posted January 7, 2015 ........plus the 392 runs best with toomy t5 pipes which i already have. Who in the fuck decided this? Quote Link to comment Share on other sites More sharing options...
Nightmare Posted January 7, 2015 Report Share Posted January 7, 2015 So I should put t5's on mine? Quote Link to comment Share on other sites More sharing options...
Big Mike NY Posted January 8, 2015 Report Share Posted January 8, 2015 Who in the fuck decided this? Omg !!!!!! Quote Link to comment Share on other sites More sharing options...
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