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Post by Elektrey on Jul 19, 2015 16:12:02 GMT -5
Cylinder might be liquid cooled (more power) but it's still a sport ported cylinder so I'm guessing just the pro rep will be better matched to it. What's exactly so different about say the Pro Replica and R1200 ? Is it really only where it creates power and the top end MPH? So : Pro replica= better take off, better 1/2-3/4 throttle , much lower top end R1200= Weaker take off, weaker 1/2-3/4 throttle, but much higher top end ? the design of a pipe dictates at what RPM it is most effective. a "race" pipe will be designed for higher RPMs. Your LC is a sport cylinder right? sport cylinder is tuned for like mid-RPM (8-10k). If you tune the pipe and cylinder to both have best effeciency at the same RPM then you will create more power. take off will lag until you hit the Powerband RPM and gears start shifting. By this logic a "race" setup will need a higher RPM so it will take longer for it to get into the powerband. This is why we use clutch springs, to get closer to the powerband before take off. throttle position has nothing to do with the power on either of them, it's RPM your looking for. Once you hit the powerband RPM you will be in your peak power in either setup. A Race cylinder will be tuned for higher RPM (and higher power at that RPM, because engine is moving faster). So the race will generate more top end because it has more power (sans gearing) |
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Post by 190mech on Jul 19, 2015 16:24:52 GMT -5
I agree with y'all!Prorep is a step up from the LV..Pipe tech is a huge science,it depends on many factors thats made into the cylinder design..If we had the port map for the new LC cylinder,that'd go a long way to figure what pipe will work and what wont..The LV pipe is happy at 9500/10000 max,Prorep will up that 1000/1500 rpm.We cant have super low end torque AND a bazillion RPM max rev..What we do have is a tunable CVT system that can be set for a wilder cylinder and pipe combo,leaving all the cagers at the stop lights,yet having a decent cruise..
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Post by sai on Jul 19, 2015 17:14:36 GMT -5
I agree with y'all!Prorep is a step up from the LV..Pipe tech is a huge science,it depends on many factors thats made into the cylinder design..If we had the port map for the new LC cylinder,that'd go a long way to figure what pipe will work and what wont..The LV pipe is happy at 9500/10000 max,Prorep will up that 1000/1500 rpm.We cant have super low end torque AND a bazillion RPM max rev..What we do have is a tunable CVT system that can be set for a wilder cylinder and pipe combo,leaving all the cagers at the stop lights,yet having a decent cruise.. How do I get the port map? im going to wait until the lc conversion is complete before getting the pipe anyways, just to be sure I'm not wasting money. Is extra 1000-1500rpm a big deal? |
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Post by 90GTVert on Jul 19, 2015 17:20:56 GMT -5
You'd have to make a port map when you have the cylinder or find one from someone that has or find the durations if anyone has listed them anywhere.
Displacement and RPM are two big factors in power production. More displacement and more RPM should lead to more power if all else is equal.
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Post by Elektrey on Jul 19, 2015 17:58:58 GMT -5
How do I get the port map? im going to wait until the lc conversion is complete before getting the pipe anyways, just to be sure I'm not wasting money. Is extra 1000-1500rpm a big deal? in addition to the extra power as 90gtvert explained, higher RPM will get a higher speed. basically 11,000 vs 9,500 RPM is like upgearing. It would increase your top speed in CVT High gear by 15% (11,000/9,500) Also provided you have enough power to open your CVT to it's highest gear. |
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Post by sai on Jul 19, 2015 18:49:34 GMT -5
You'd have to make a port map when you have the cylinder or find one from someone that has or find the durations if anyone has listed them anywhere. Displacement and RPM are two big factors in power production. More displacement and more RPM should lead to more power if all else is equal. So... Just take a photo of the holes? and if you guys were me with my setup... Would you go pro replica or pure racing r1200? |
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Post by 190mech on Jul 19, 2015 18:58:09 GMT -5
Port map posted at your LC thread...As is the Prorep would be more pipe than needed,I'd like to see 180+ Ex and 127-130 Tra,then the Prorep would smile!!
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Post by sai on Jul 20, 2015 22:14:02 GMT -5
Pro-rep it is then. (such a handsome pipe)
I just hope the chrome won't rust like my Leo Vince -_-
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Post by sai on Aug 21, 2015 12:49:17 GMT -5
So I finally got the Pro rep and the gaskets from 190mech (THANK YOU)
THis pipe is soooooo pretty!!
Alas I have to wait a week for my mechanic to come back so he can shave 2mm off the cylinder for the squish.
Now what I'm worried about is if the Pro rep won't perform even as good as my Leo Vince ZX-R even after all the port timing and squish mod.
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Post by sai on Sept 11, 2015 12:20:05 GMT -5
Got the Pro-rep in, it has a tough time getting above 9000rpm for some reason even after all the port and squish mods.
The Leo vince gets to 10.000+ too easily
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Post by sai on Sept 11, 2015 16:21:44 GMT -5
Update:
So acceleration and everything is fine. Top speed is still around 50mph like the leo but the rom dropped from 13000rpm to
10.000-11000 or so.
I didn't gain any top speed
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Post by 190mech on Sept 11, 2015 18:02:00 GMT -5
I'd try some lighter rollers to let the pipe better use its higher rev band easier..Some of the guys here have run this pipe on Mina builds,perhaps they could chime in on this...
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Post by sai on Sept 11, 2015 20:01:23 GMT -5
Trying 8gram rollers, looks like the belt doesn't travel all the way up. Got about a pinhead size marker left still.
Will test further as I go 40 miles round trip tonight
If going lighter doesn't gain me the extra top speed... I'm basically maxed out at 50?
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Post by 190mech on Sept 11, 2015 20:19:57 GMT -5
Revs are the only thing that'll get you more speed with the CVT and gears you have now.Its a balancing act between engine max torque,CVT belt limits and final drive..A lighter roller setup should get the revs higher,with them installed the engine should spin up more than the heavier setup,hopefully allowing the pipe to work at its designed range..
PS, 8 grams sounds kinda heavy for a warm 70cc setup,but Ive never tuned a Kymco before..
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Post by iwiketuddlz on Sept 11, 2015 20:54:30 GMT -5
I run 24grams total roller weight and can cruise at 35mph @ 7500/80000 rpm then kick it and it will shoot up to 12k + and take off!!! Woot I dunno just a reference. Sai
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