ToomeySheeLE Posted August 16, 2006 Report Share Posted August 16, 2006 Hello All... Just sold the t-6s' and got some cpi inframes.. First off i noticed the quality of the CPI's is alot less to be desired than the t-6s.. The weld are gaudier and the chroming doesn't look quite as good.. Anyone else find it nearly impossible to get the stinger tube to attach securly to the headpipe? they didn't come with clamps for some reason and im depending on my old ones to keep them from leaking since they're not quite flush together.. Alright quality complaining aside how about performance, they definitly pull threw the gears faster, but they sure don't scream and spin like the t-6. I have mild portwork done and running them on stock carbs 320 main jet, 30 pilot at sea level.. My t-6 where jetted the same except a 300 main. they dont seem to bog but i thought they'd pull harder.. do these jetting spec sound right? The needles are longer ones from toomey and they are set up with the clip in the position toomey reccomends..(I forget). Thanks for any input Brad Quote Link to comment Share on other sites More sharing options...
dajogejr Posted August 16, 2006 Report Share Posted August 16, 2006 Stock Carbs, Mild Porting, Drag Pipes... That mismatch is why... One of two problems... Too small of carbs, my thought... Or.. Your porting type liked the T6's better. I bet if you pulled your jugs off and sent them out, telling the builder you were running drag pipes...so you need at least a strong dune port if not a drag port, you'd like them better. CPIs breathe a lot better, but with stock carbs your asking them to suck through a coffee stir. You went from a pipe that had an overall powerband, albeit at less HP...to a top end pipe that will make more power, but over a shorter duration... Quote Link to comment Share on other sites More sharing options...
trueraiderfan Posted August 16, 2006 Report Share Posted August 16, 2006 how much did you pay for the cpi's if you dont mind me asking and also did you buy them new or used toomeysheele? Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted August 16, 2006 Report Share Posted August 16, 2006 maybe your jetting is too rich making it not runto its potential. have you checked the plugs with the new pipes and jetting? Quote Link to comment Share on other sites More sharing options...
J-Madd Posted August 17, 2006 Report Share Posted August 17, 2006 Hello All... Just sold the t-6s' and got some cpi inframes.. First off i noticed the quality of the CPI's is alot less to be desired than the t-6s.. The weld are gaudier and the chroming doesn't look quite as good.. Anyone else find it nearly impossible to get the stinger tube to attach securly to the headpipe? they didn't come with clamps for some reason and im depending on my old ones to keep them from leaking since they're not quite flush together.. Alright quality complaining aside how about performance, they definitly pull threw the gears faster, but they sure don't scream and spin like the t-6. I have mild portwork done and running them on stock carbs 320 main jet, 30 pilot at sea level.. My t-6 where jetted the same except a 300 main. they dont seem to bog but i thought they'd pull harder.. do these jetting spec sound right? The needles are longer ones from toomey and they are set up with the clip in the position toomey reccomends..(I forget). Thanks for any input Brad I actually had to dremel out the inside of the the tail pipe and heat it to get it on the freakin header securely. Quote Link to comment Share on other sites More sharing options...
Justintoxicated Posted August 17, 2006 Report Share Posted August 17, 2006 (edited) Jetting sounds off to me, but we don't know what airbox setup your running. (I was running a 320 Main with FMF Fattys, NO Porting, and a K&N.) But that does not necessarily mean you are off. You also need to switch to clamp on K&Ns (if applicable for your ride) some larger carbs (maybe 33mm pwk's) , and V-force reeds to get the most out of those pipes with porting (not sure how extensive your porting is but these pipes are good from mid to top end). I had a hell of a time installing mine. My Silencer had to be taken apart to remove welding beads (it would not mount straight and there was a gap between silencer and stinger tube). I had to hone out the stingers with a dremel to get them to slide over the header on the expansion chamber. The right pipe's Header had to be ground down about 1/4th of an inch so that the silencer would slide on far enough to line up with the mounting hole in the frame. The left side would not fit at all so We had to dent in the expansion chamber with a hammer in order to make it clear the head. We also had to use a 1/2 inch spacer on the pipe clamp. Between the dent and 1/2 inch spacer it still only clears the head by a couple mm's. If they are Big Bores I do like the R.I.S. Pipe clamps...They seem to seal up nicely but I have not tested mine yet. Edited August 17, 2006 by Justintoxicated Quote Link to comment Share on other sites More sharing options...
RIPPEN Posted August 17, 2006 Report Share Posted August 17, 2006 I had a little bit of trouble installing my CPI's as well but it seems now(after taking them off and on a couple times) they don't install to bad.. As far as performance... I was looking to get T6s originally but had heard basicly NOTHING good about them. Most all the bikes that run around hear that have CPI's seem to run well.. I would definatly play around with Jetting/ect and I think you'll be more satisfied :beer: RIPPEN Quote Link to comment Share on other sites More sharing options...
sheefreak Posted August 17, 2006 Report Share Posted August 17, 2006 Get the right setup, and they will make way more hp than the t-6's on the same motor. The t-6's were designed to run optimally w/the stock porting on a banshee. They will run as well or better than most pipes on a virgin jug. That being said, most "mild" port jobs are not far off from stock. Quote Link to comment Share on other sites More sharing options...
trex banshee Posted August 17, 2006 Report Share Posted August 17, 2006 I will have to agree with dajogejr too smalll of carbs. If you know someone that will let you barrow some bigger carbs to try them out do it. I had a buddy whos bike done the same thing it would really scream and then just sign off. It had some port work with stock carbs so we changed the intakes and put my 35's on when they were on gas and it pulled all the way to the top. Quote Link to comment Share on other sites More sharing options...
locogato11283 Posted August 17, 2006 Report Share Posted August 17, 2006 i dont believe carbs to be the problem. you should still seea noticeable gain from just switching pipes. anytime you go from a regular pipe to a drag pipe the gains will be quite a bit. i say work on jetting because a couple main jet sizes can make or break how a banshee runs. Quote Link to comment Share on other sites More sharing options...
Dmcbanshee Posted August 17, 2006 Report Share Posted August 17, 2006 I even ran the CPI myself for a while with stock carbs,mild port.I never had problem with my shee.Like Tyler said work on jetting Quote Link to comment Share on other sites More sharing options...
odaen Posted August 17, 2006 Report Share Posted August 17, 2006 I even ran the CPI myself for a while with stock carbs,mild port.I never had problem with my shee.Like Tyler said work on jetting I'll echo the above sentiment. Stock carbs ain't the problem. If the port durations weren't altered much with your mild dune port, your CPI's won't be much of an upgrade, if at all. I ran stock carbs on a 4mm dune port, and that thing ran very hard. Quote Link to comment Share on other sites More sharing options...
dajogejr Posted August 17, 2006 Report Share Posted August 17, 2006 I should rephrase my first statement. MY 4mil cub pulled great on stock carbs and T5s... However...in order to get the real deal out of those pipes, I think more agressive porting and bigger carbs would be needed. I didn't mean to sound like stock carbs won't work or are A problem...I think the performance gains he was looking to get aren't going to come from the pipes alone... Toomey...I was in similar shoes a few months ago. I had a TON of problems with my cub build.... I posted my specs...and quite a few people said "It won't run right with T5s and Stock carbs"...that's your problem...yadda yadda yadda.... Some even said it won't work with that setup. It ended up being a bad flywheel, air leak at the base gasket and coolant leaking at the head surface (yeah, my luck....) Got it all together, and it ripped... My dumb ass took it on some trails and sucked water...ended up popping a crank seal. So...once again it was down, I went all out. Replaced EVERYTHING in the ignition, 35PWKs, RDZ inframes, the works. I know I didn't "need" too...but, I had extra cash and I planned on doing this sooner or later....it was just the excuse that I needed to get all this while it was down anyways.... Sorry for the novel, but...I didn't want you to think I said they "Wouldn't" work...only that they are limiting the performance I think you were looking for... And...yes, I'm sure the jetting is a little off...but probably not much... Here's my original thread from months ago...you'll see what I mean: (the dyno run was before my Dyna Igntion, Nology Coil, 35PWKs and RDZ/Shearer Inframes)... http://www.bansheehq.com/forums/index.php?...topic=59777&hl= Quote Link to comment Share on other sites More sharing options...
DUB Posted August 17, 2006 Report Share Posted August 17, 2006 as far as the chrome goes...I also thought it was kinda shitty but before I even put mine on my bike I had them ceramic coated for 175.00. looks killer and is a great thermal barrier.(hotter the exhaust the faster it flows) sorry the pic is kinda blurry Quote Link to comment Share on other sites More sharing options...
Justintoxicated Posted August 17, 2006 Report Share Posted August 17, 2006 Carbs may not be the problem but it's the whole system that makes the most noticable gains. The drag pipes are allowing for alot more exhaust flow and less restriction than your T5's on topend. But if your motor is similar to stock then you will not see the gains. You need semi agressive Porting that will increase your exhaust flow and RPM's and which will need more air/fuel which means carbs, filter and reeds. The system works as a whole. If you don't have extensive porting carbs and reeds then CPI's may not be the best pipe choice. I for example just installed Big Bore CPI's even though I still have a 350. Regular bores would likely make more power than the big bores. Why? Because my little 350 really does not need the BB silencers, but I have plans to upgrade later and I know the BB's will respond better,and run cooler once I drop in a cub. In fact T5's could easily make more power on a stock, or lightly modded banshee than CPIs. Thats why T6's perform better on a stock banshee than T5's but don't respond as well to agressive porting. Now on the bright side, even if you don't see large gains now, the CPI's should respond better than the T5's with the more mods you do in the future. For example you switch to a ported stroker with carbs and reeds and go up another 25 HJP, rather than 20 like the T5's might provide. The more mods you do to your motor the more HP Benefits you will see using the CPI's over the T5's. And I'm not saying that your problem is Carbs, or Jetting or anything at all since I know nothing about your porting other than it sounds moe like a clean up port than anything agressive, just trying to help. I would think your should be able to rev higher with yoru new pipes than teh T5's and make more power in those higher RPM's (likely less power on bottom through mid) Quote Link to comment Share on other sites More sharing options...
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