T5 or CPI inframe

[Justgotabanshee]

T5's are good to about 70hp, then they fall over. i think the t5 is a pretty good low to mid range pipe and is great in the tighter trails but they run out of puff in the upper rev range, when a cpi would keep pulling. it depends how you ride, if you love getting up on the pipe and staying in the upper rev range get the cpi's.

 

a dune ported 350 with bolt ons will beat a yfz450, if you want to kill it, you will need a ported 4mm stroker.

rider ability and bike setup wins races, power just helps

 

 

thanks man well explained....i think im going to get me some cpis anyone know where to get them except from ebay? i saw some on there that said cpi inframe pipes for banshee then cpi inframe big bore pipes for banshee? where can i get the big bore pipes

[Wicked ATV]

thanks man well explained....i think im going to get me some cpis anyone know where to get them except from ebay? i saw some on there that said cpi inframe pipes for banshee then cpi inframe big bore pipes for banshee? where can i get the big bore pipes

 

Here's another wrench. Depending on the motor you plan to run it's going to vary a Big Bore pipe or not Big bore from CPI. You have to be set on ready with what motor you plan to build. from the post of CC's you had mention you still not sure and you were guessing 450 to -465cc's guessing your looking at a 68bore /61 or a 68/64 stroke motor more likely cheetah cubs My opinion stick with the CPI's Small Bore unless you plan to use 72+ up bores like super cubs or something. Oh and by the Way Toomey's will hit over 10K depending on the Motor design. Compression port timing stroke etc.... But the average build with T-5;s sign off is about 9800 RPM but they have a nice over rev that don't drop off like a cliff.

 

Remember one thing as well the point to a build over a 4-stroke is you want to build the motor to out last your buddy's 4-stroke. the more Chain saw abuse and RPM you add the worst the life span is to the motor. If you can build it to make every thing from 5500RPM to say... 10-10,500 you'll have a long lasting motor. The lazier the motor is on the power band the less the motor life will be. This something we have to consider when we build dunner and RZ's for our customers. Just some info as well many builders will agree... also as well i recall trail riding being a issue that is what you wanted. Just think about 7k -10,000 RPMs all at once with about 90-100HP around a treee.... Yikes.

[Justgotabanshee]

Here's another wrench. Depending on the motor you plan to run it's going to vary a Big Bore pipe or not Big bore from CPI. You have to be set on ready with what motor you plan to build. from the post of CC's you had mention you still not sure and you were guessing 450 to -465cc's guessing your looking at a 68bore /61 or a 68/64 stroke motor more likely cheetah cubs My opinion stick with the CPI's Small Bore unless you plan to use 72+ up bores like super cubs or something. Oh and by the Way Toomey's will hit over 10K depending on the Motor design. Compression port timing stroke etc.... But the average build with T-5;s sign off is about 9800 RPM but they have a nice over rev that don't drop off like a cliff.

 

Remember one thing as well the point to a build over a 4-stroke is you want to build the motor to out last your buddy's 4-stroke. the more Chain saw abuse and RPM you add the worst the life span is to the motor. If you can build it to make every thing from 5500RPM to say... 10-10,500 you'll have a long lasting motor. The lazier the motor is on the power band the less the motor life will be. This something we have to consider when we build dunner and RZ's for our customers. Just some info as well many builders will agree... also as well i recall trail riding being a issue that is what you wanted. Just think about 7k -10,000 RPMs all at once with about 90-100HP around a treee.... Yikes.

 

thanks bud...well can you tell me what i should do?...im leaving all plastics on ...not adding to the frame.. i want between a 450 and 500 big bore kit...i saw trinity had a 485 cc big bore kit for like $4000 though. Ive seen other people that get them for a lot cheaper... and true... So what would you say i should do with my 450 500 cc engine? if theres such a thing

[Wicked ATV]

thanks bud...well can you tell me what i should do?...im leaving all plastics on ...not adding to the frame.. i want between a 450 and 500 big bore kit...i saw trinity had a 485 cc big bore kit for like $4000 though. Ive seen other people that get them for a lot cheaper... and true... So what would you say i should do with my 450 500 cc engine? if theres such a thing

 

 

PM Sent. I got the perfect thing