BANSHEEBEEFM2M Posted May 20, 2014 Report Share Posted May 20, 2014 bought a set of bb cpi in frames thought they were sb. I have a Ss longrod, drag ported with 66.5mm blaster pistons. Adv. Timing cool head 17cc domes override etc. My boy ran bbs on a 350 before and had no problems. . are they going to make my bike run like shit? Sent from my SCH-R970C using Tapatalk Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted May 20, 2014 Report Share Posted May 20, 2014 Everybody ran big ass pipes on something with "no problems".......... FFS Just because it RAN and didn't blow up doesn't mean it worked good. Will it work? Sure. Will putting a big ass set of pioes on a little motor hurt it's performance? FFS...You had to ask? If you don't know the answer.....don't bother asking. Just be like everone else and run them since you own them........just don't report back about how "the bike RIPS! " because that's not knowing what power is missing. Quote Link to comment Share on other sites More sharing options...
BANSHEEBEEFM2M Posted May 20, 2014 Author Report Share Posted May 20, 2014 No need to b a bitch about it brotha just curious Sent from my SCH-R970C using Tapatalk 1 Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted May 21, 2014 Report Share Posted May 21, 2014 No need to b a bitch about it brotha just curious Sent from my SCH-R970C using Tapatalk Then don't come on here saying something stupid like "my boy did it on his 350 with no problems" .......then turn around and ask if it's ok. Quote Link to comment Share on other sites More sharing options...
m671054 Posted May 21, 2014 Report Share Posted May 21, 2014 You have much bigger problems to worry about than those pipes. Your domes sure seem small for sea level. Also those tires in your build thread look pretty big for such a small motor. It will be fine till you get everything else dialed in Quote Link to comment Share on other sites More sharing options...
BANSHEEBEEFM2M Posted May 21, 2014 Author Report Share Posted May 21, 2014 I run 22-11-8 9 paddle ultra lights those are just to roll it around the shop right now. N I've had no problems with the 17cc domes before. I run race gas. What size domes would u suggest? Sent from my SCH-R970C using Tapatalk Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted May 21, 2014 Report Share Posted May 21, 2014 You haven't even done a compression check on that motor. You are assuming 17cc will need race gas. But that is incorrect. The long rod with a Blaster piston will be pretty low compression unless cylinders were decked or complete custom cut domes were made. Quote Link to comment Share on other sites More sharing options...
m671054 Posted May 21, 2014 Report Share Posted May 21, 2014 I would suggest measuring out port durations,squish and pick what fuel you want to run. Then contact a competent builder to get you setup with domes to complete your package.at 1 time i was like you and ran a similar setup. My eyes have been opened years ago. Just trying to open yours. Dont do what your boy does. Youll just be 2 guys getting beat by fourstrokes instead of only him. Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted May 21, 2014 Report Share Posted May 21, 2014 But he's a dope..... Rapper. Quote Link to comment Share on other sites More sharing options...
BANSHEEBEEFM2M Posted May 21, 2014 Author Report Share Posted May 21, 2014 with these domes I can run half 91/ half race gas. And I've been running this motor. Ran great how it is set up with t3s same setup just freshened up and went to CPIs Sent from my SCH-R970C using Tapatalk Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted May 21, 2014 Report Share Posted May 21, 2014 Ran great = 57 HP and you could have ran straight pump gas to do it. Stop telling us stuff and start listening. Your compression is around 125-130. I know this from experience added to the pieces of info you have provided. You CAN'T BUY off the shelf domes small enough to need race gas on that set-up. Quote Link to comment Share on other sites More sharing options...
BANSHEEBEEFM2M Posted May 21, 2014 Author Report Share Posted May 21, 2014 Ok I understand exactly. Who can do me up a set of domes? Sent from my SCH-R970C using Tapatalk Quote Link to comment Share on other sites More sharing options...
BANSHEEBEEFM2M Posted May 21, 2014 Author Report Share Posted May 21, 2014 Sent from my SCH-R970C using Tapatalk Quote Link to comment Share on other sites More sharing options...
possum Posted May 21, 2014 Report Share Posted May 21, 2014 10 years ago i bought sb shearers and threw them on my 350. it ran good but not great. Then come to find out they were big bores the whole time. So i bought sb shearers then and it felt way stronger with way more roll on power. moral of the story. get sb's Quote Link to comment Share on other sites More sharing options...
WINDYCITYJOHN400 Posted May 21, 2014 Report Share Posted May 21, 2014 Ok I understand exactly. Who can do me up a set of domes? Sent from my SCH-R970C using Tapatalk Almost anyone. NOSS, TITAN, ETC. But first you're going to have to take some accurate clearance measurements. Your NEW domes are going to have to hang down into the cylinders a bit. The trick is to figure how much. NEXT if you really wanna make it worth while, you need to degree the timings on the motor so you can get a dome SHAPE that compliments the port timings. After that, you pick an octane fuel to use and build some domes for the overall package. Quote Link to comment Share on other sites More sharing options...
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