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Post by ital on May 16, 2015 0:54:46 GMT -5
Just installed the 3 11g sliders with 3 12grams rollers. Put it all back together, but could not take her out for a ride as it is raining. It supposed to rain tomorrow as well, hopefully I can post an update on RPMS Sunday. I was happy that my sliders did not move after 150 miles.
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Post by ital on May 15, 2015 13:58:30 GMT -5
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Post by ital on May 15, 2015 13:54:48 GMT -5
My buddy has a lot of experience tuning 400WHP to 1200WHP cars.
It seem the NCY head comes with springs.
we might not even go to the 61mm BBK we might just get the NCY 58MM ceramic coated for higher RPMS.
He his thinking higher RPM for more power but less torque but for higher speeds you need power not torque, that way we might be able to keep the stock gearing, I will most likely need to change them
we are now looking now at A12 race cams, hopefully we have the list finalized by Monday.
We may go with 30 or 32mm hoca carb with hoca intake so there is no flow restrictions.
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Post by ital on May 15, 2015 8:55:33 GMT -5
I should have added we already have the free flow exhaust and uni filters and race variators. Yeah I do realize that 70MPH for my scoot will be very tough especially since my retro scoot is not aerodynamic at all...
my buddies however looks like a race motorcycel with 12" or 13" wheels so he will have better results.
does any know if the NCY Cam is an A9 Cam?
We might just go with the Hoca 32mm, but that is still up to debate. Either 32 or 30 I hope it will fit in the space we have... :-)
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Post by ital on May 15, 2015 8:45:56 GMT -5
I decided to follow your advice and mix my 12 grams rollers with the sliders. I'll let you know how I make out. Sorry , I didn't mean to mix the sliders and rollers. Id mix 12 gram rollers with 11 gram rollers . I know u don't have the 11 gram rollers yet . I have a set of 11 gram rollers if you need some " free of charge " I'm actually dead broke till Monday so if you send me your address I can send them out Monday. I'll have to check to make sure I have a good set of 11's just to be sure. Thanks brother geh3333, I will keep that in mind for the future!!!! However I did read in some older forums where this was done with very good success so I will give it a try. scootdawg.proboards.com/thread/50353?page=1#shineAnyway hopefully in a month or so I will be fully upgraded to the 61mm and will be changing weights again  |
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Post by ital on May 14, 2015 23:30:50 GMT -5
Hello All, My buddy and I are planning on doing the 61mm upgrade and we are deciding on parts. My buddy is a heavy car tuner so he has a lot of contacts so that helps. so far we have decided to get: NCY 61mm Big bore kit NCY 61mm Head which we will have HAND PORTED as well Now we need advise on a carburetor, we are thinking on getting the Hoca 30mm or 32mm Carb which are not cheap, I seen some that look nice on amazon but nor sure about quality. Also on the cam we need advise, I was thinking about getting the NCY Performance Cam My buddy thinks the A10 Racing Cam Shaft by MRP is the way to go. If you guys have better suggestion they are welcome. Not sure if we are missing anything else. Thank you all for the great help it is much appreciated!!! our goal is 70MPH on flats and keep her reliable. We plan on gearing as well but we will look at that after the install. |
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Post by ital on May 14, 2015 22:24:12 GMT -5
I decided to follow your advice and mix my 12 grams rollers with the sliders. I'll let you know how I make out. |
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Post by ital on May 14, 2015 16:40:00 GMT -5
geh3333 lain It seems sliders do increase RPMS. It does make sense. At least from what I am reading from other posts online, people using same wight sliders were getting higher RPMS. If I am hitting 8K rpm on flats on 11g sliders, should I use 12 grams to lower my rpms to about 7500 on flats? does that make sense or should i go even heavier? Man this is another $20... lol Thank you
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Post by ital on May 14, 2015 0:05:45 GMT -5
They do sell 11.5 dr pulley rollers or sliders. I just don't understand why 1 gram would make my rpm climb by 1k? Do 11 gram slider vs 11 gram roller yield same rpm? Or slider cause higher rpm?
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Post by ital on May 13, 2015 20:48:02 GMT -5
Yes I have the 10" wheels, I have the Hoca Race variator and my belt is climbing all the way up, Next time I open it up I'll take pics  Thanks for all the advise. I think I will eventually try the 15x38 gearing if I ever get the BBK. I am trying to convince my buddy and we will do it together, your video is helping convince him... haha |
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Post by ital on May 13, 2015 20:41:11 GMT -5
geh3333 I think that is a good idea, however my 12 grams are rollers and my 11 grams are sliders. Not sure if I can mix them up Also on the way home from work my RPM went higher, I was hitting now 8100 rpm on flats... i backed off though. I'll have to try to take the variator out and make sure nothing shifted. Maybe i'll just order a set of 11 grams hoca rollers and mix them
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Post by ital on May 13, 2015 12:22:25 GMT -5
WOW that is some impressive MPH bro!!!!
sign me up!!!
I am going to copy your set up but with NCY 61mm BBK and heads, maybe use 15x28 gearing if you think that would not be too high.
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Post by ital on May 13, 2015 12:17:49 GMT -5
lol on nice days I drive to work, 35 miles each way, with many areas of WOT |
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Post by ital on May 13, 2015 10:30:56 GMT -5
I think taking the engine above 8000 RPMs is a little dangerous. I tuned my CVT to max out at 7500. Yes your friend my slightly quicker than you, but he will be broken down much quicker. Maybe instead of trying to match him with RPMs, install a BBK without telling him. I had put in lighter weights the other day to try stuff out, got up to 9k rpm on a level street, and 10k downhill. There is no added power over like 8k though, so there's no point. I of course switched back to my 6.66g weights and only get up to about 7500 max, but that's the highest rpm that will give out useful torque and horsepower. Yes BBK is next on the list, however even if using NCY 61MM BBK and heads would it be just as reliable? I drive a good 3k Miles each summer, for an hour at the time. |
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Post by ital on May 13, 2015 8:55:56 GMT -5
geh3333 Just wanted to give you guys an update. I went from 12 Grams hoca rollers to 11 Grams DR Pulley sliders. Before - 12 grams rollers Hill climbing 6400 to 6500 Flats - 7k too 7400 down hills - highest seen 7950 After - 11 Grams Sliders Hill Climbing - 7200 rmp Flats - 7500 to 7700 Down hills - 8400 is the highest I seen Performance? It does feel a bit faster on take off, but it felt slower top speed, but that was not the case. I actually picked up quite a bit of acceleration and maybe 1 mph top speed I have a friend with a scooter as well and he has been killing with his 150, now we are evenly matched. Hope this info helps other, however now I do not know if I need to worry about my RPM being too high? I use very good oil and all (5w 50 synthetic) and change it every 1k miles, which is like every 1.5 months is summer months
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