87bansheeguy Posted September 17, 2008 Report Share Posted September 17, 2008 So far my mods are: k&n pods,aftermarket reeds, 4+advanced timing, shaved head, aftermarket cdi, and fmf fatty pipes, i was wondering how much hp i probably have with this set up? Also i want to beef it up and im thinking about boring over(needs to be done) and how much i can bore it over and still be safe i was like .080 over. Then im going to do my porting i was thinking a trail or mx port, then what size carbs should i go with im thinking 28mm. How much hp should i have after doing these mods and im looking for a better top end without the complete loss of my bottom end but i have some to spare Quote Link to comment Share on other sites More sharing options...
Paddleboy Posted September 17, 2008 Report Share Posted September 17, 2008 your at .80 over on bore right now? i'd look to get new cylinders before a port then Quote Link to comment Share on other sites More sharing options...
travis6767 Posted September 17, 2008 Report Share Posted September 17, 2008 stock carbs are 28 mm and you can only go .100 over stock on the bore, so get new cylinders then do your porting and if you want top speed go with a dune port ot drag port because the mx and trail will help with the bottom end Quote Link to comment Share on other sites More sharing options...
xXBlessedWithDeathXx Posted September 18, 2008 Report Share Posted September 18, 2008 you want the least bores as possible. if your stock cylinders are still stock get them ported then bored. you only need to get it bored as least as you can. another words if your 10 over and your mechanist says you need to go 20 then do it. if he says 30 over then do that. dont go 10 to 80 over. thats like throwing money away but you want the port job first then bore. that will save you about $90 or so. stock carbs are 26mm. Quote Link to comment Share on other sites More sharing options...
Titan up Posted September 18, 2008 Report Share Posted September 18, 2008 Proably about 45 hp now. Throw in another 10-15 hp after the porting, and if your cylinders are at .08 over you might want to look into getting another pair. Don't waste your money on having cylinders ported that are .08 over, unless you have the time and know how to port them yourself. Quote Link to comment Share on other sites More sharing options...
gumby6t9 Posted September 18, 2008 Report Share Posted September 18, 2008 stock carbs are 28 mm and you can only go .100 over stock on the bore, so get new cylinders then do your porting and if you want top speed go with a dune port ot drag port because the mx and trail will help with the bottom end Stock carbs are 26mm.... FYI Quote Link to comment Share on other sites More sharing options...
87bansheeguy Posted September 18, 2008 Author Report Share Posted September 18, 2008 Stock carbs are 26mm.... FYI Yeah they dont need to be bored i just wasent sure if it was good or not to do it. Ill get a dune port then will my bottom end be gone? and how long will my stock clutch last Quote Link to comment Share on other sites More sharing options...
Wildcardracing Posted September 18, 2008 Report Share Posted September 18, 2008 It all depends on who does the porting. I can match a nice play/dune port to your FMF's and give you a very strong but smooth power band with decent low to mid power. Should put you somewhere around 60hp. But I won't port an engine that is past its half life on cylinder bores, I feel it is bad business to let a customer spend that kind of money on a worn out set of cylinders. I like for my customers to get as much life from the portwork as possible for thier money. -slo Quote Link to comment Share on other sites More sharing options...
spurdy Posted September 18, 2008 Report Share Posted September 18, 2008 Yeah they dont need to be bored i just wasent sure if it was good or not to do it. Ill get a dune port then will my bottom end be gone? and how long will my stock clutch last HJR for all your porting needs! Again, don't bore for power. Kevin did my porting and I have tons of bottom end (4 mil crank) and Kev can tell you what to do with your clutch. Call and check around. SP Quote Link to comment Share on other sites More sharing options...
87bansheeguy Posted September 18, 2008 Author Report Share Posted September 18, 2008 HJR for all your porting needs! Again, don't bore for power. Kevin did my porting and I have tons of bottom end (4 mil crank) and Kev can tell you what to do with your clutch. Call and check around. SP The cylinders are in perfect condition no boring needed its 21 years old with probably 50 hours on it. It sat in my garage for about 15 years because i didnt have to time fix the cdi box i know a little lazy but times were rough. And how much do u charge for porting? how much does hjr charge also and how long will my bike be down for Quote Link to comment Share on other sites More sharing options...
dajogejr Posted September 18, 2008 Report Share Posted September 18, 2008 (edited) You only bore the next size needed to get your piston/cylinder clearances within spec. Call Kevin to see how much he charges and his turn around time.... http://www.herrjugsracing.com/ Your bike is 40 to 45 HP right now...give or take. You can get as much HP as your wallet can afford. Edited September 18, 2008 by dajogejr Quote Link to comment Share on other sites More sharing options...
87bansheeguy Posted September 19, 2008 Author Report Share Posted September 19, 2008 You only bore the next size needed to get your piston/cylinder clearances within spec. Call Kevin to see how much he charges and his turn around time.... http://www.herrjugsracing.com/ Your bike is 40 to 45 HP right now...give or take. You can get as much HP as your wallet can afford. i want to get around 65 or 70 how much will that cost me and wut upgrades? Quote Link to comment Share on other sites More sharing options...
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