yeh i weighed one roller multiplied that by two then divided that by six then took that much off of each roller by carefully knocking the roller out of there sleeves and drilling that out of each one i dont recall how large of a bit i ended up with helped a ton i had read some thought 3 rollers was to many thats y i went that route

the plug was black machine sounds bogged down and delay on the throttle that has not changed since i started doing mods machine has more torque though takes a lot more to hold it back thought it important to tell mods incase that would change opinion of strategy should get cdi in bout one week cant wate\

i still want a DRR without a doubt but check out this video let me know what you guys think.....

http://youtube.com/watch?v=rIFW6FHTZD8

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Me 2007 Ltr450
Mom 2007 ltz250
daughter 2007 ltz50
myspace.com/eddiecruzproductions

nice video ed

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07 Raptor 700
07 LTZ-400
07 LTZ-50
07 Outlaw 90
04 Chevy 2500HD

thanks, edkatt

I just put on the sprocket and the shaved head and this thing rips!!!! I know it's still not as fast as some of the DRR's but it's moving now...
I also change the main jet from 7.2 to the 8.0....

1)Nobody said anything about having to cut the little metal bracket on the rear swing arm that holds the chain guard in place, the 48t sprocket will hit it if not cut or shaved down...

2) After put the shaved head .015 nobody told me about doing a valve adjust, I do bolt-ons I thought it was going to be hard but super easy, just didn't know it had to be done...

All n all the bike is running really hard and I can't wait to take my daughter back to the track on 5/18 so u guys can see this thing rip!!!!!!!!

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Me 2007 Ltr450
Mom 2007 ltz250
daughter 2007 ltz50
myspace.com/eddiecruzproductions

Edited: 05/07/2008 at 08:33 PM by edc7002

Yes it was mentioned in the previous post, you must have over looked it

Oh,

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Me 2007 Ltr450
Mom 2007 ltz250
daughter 2007 ltz50
myspace.com/eddiecruzproductions

Edited: 05/08/2008 at 01:45 PM by edc7002

For you guys that shaved the head are you having to run a mix of race gas and pump or can you get by on 91 octane?

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04 DS650 BajaX - HPR Stage II with some other goodies.
04 DS650 BajaX - HPR Lectron 46HV, ported intake, end cap, 15T CS, RWR 60% springs.

I run 93 octane pump gas, no problem with the bike run great... But i my never ending quest for more HP.... I was thinking about running higher octane for the race but i was wondering can i go back to 93octane without a problem afterwards ??????

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Me 2007 Ltr450
Mom 2007 ltz250
daughter 2007 ltz50
myspace.com/eddiecruzproductions

A higher octane rating will not automatically add power. If you are not experiencing pre-ignition then you do not need a higher octane rating. You will be wasting money if the bike isn't pinging.

In cars with knock sensors a higher octane rating might cause the computer to advance the timing a little more, which results in slightly better performance. (The car's computer will advance the timing until it detects a knock.) I'm certain that these bikes don't have knock sensors.

So is there some way to advance the timing on these machines?

Our 48 tooth sprocket arrived this evening.

thankz i just saved some money on race gas and didn't lose any sleep dreaming about it

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Me 2007 Ltr450
Mom 2007 ltz250
daughter 2007 ltz50
myspace.com/eddiecruzproductions

Really racing gas isn't that much more now adays. I run a 50/50 mix in all my bikes of 87 and 110 racing fuel,.mainly for the smell
87= $3.79
110=$5.99

I picked my son up from pre-school today and we installed the new 48 tooth sprocket. The bike definitely has more pulling power but I'd still like a little more. There are still slopes that are safe for my son to drive straight up and down on that the bike will not start on under it's own power. If it's moving even a little there is no problem. I have to say they are pretty steep slopes. We have an area that has gullies with 24" climb outs. I want the bike to be able to nose up to them and power up and out. We're almost there. I might pull three rollers this afternoon.

Here's some pictures of the 37 tooth, the 43 tooth and the 48 tooth laying in a stack for comparison. There's also a photo of the ground clearance with the 48 tooth installed. And a few others of my kid wrenching on his bike. That's what it's really all about!







Edited: 05/09/2008 at 01:48 PM by EagerJeeper

I found that the 48 tooth sprocket hits the CT pipe on hard landings...left some nice dents in mine...

Edited: 05/09/2008 at 01:58 PM by jeffnrivercity

You will actually make less power running more octane than you need. Remember the higher the octane the slower the burn. Race gas is designed to avoid detonation, not make more power by itself. EagerJeeper is right in that you only need to run enough octane as to not have any signs of detonation. Any octane above that your not only throwing away $$ but your probably loosing power.

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04 DS650 BajaX - HPR Stage II with some other goodies.
04 DS650 BajaX - HPR Lectron 46HV, ported intake, end cap, 15T CS, RWR 60% springs.

I know this a little off topic but since there are a lot of LTZ50 owners here I have to ask.... Has anyone installed a headlight and/or tail light on one of these?

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04 DS650 BajaX - HPR Stage II with some other goodies.
04 DS650 BajaX - HPR Lectron 46HV, ported intake, end cap, 15T CS, RWR 60% springs.

hey EagerJeeper some nice pics couldnt agree more about the kids wrenching and seeing their results on hold right now
with our cycle shop checking on a.015 shave and gask. 22.5pilot 80main jet they must be busy or forgot about me

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Nephew LTZ 50 2007 was sad but getting there
mine LTZ250 2007 hope to be his step up
wife maybe someday

There's nothing like seeing your kid smile from ear to ear....
Nice pix

I thought about running a light in there but been kinda lazy I guess,.... that would have been so kool though if it came like that' I thought it did at first... if you decide to do it now I would suggest running it on a separate switch so that it's not on all the time...

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Me 2007 Ltr450
Mom 2007 ltz250
daughter 2007 ltz50
myspace.com/eddiecruzproductions

Edited: 05/09/2008 at 03:25 PM by edc7002

can someone out there set me straight just got off phone w/cycle shop was informed stock main jet is a 125. pilot they didnt know and why not just get .015 thinner head gask. they farm out their milling work ?????????

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Nephew LTZ 50 2007 was sad but getting there
mine LTZ250 2007 hope to be his step up
wife maybe someday

WHOA .......i would go to a different shop...stock main jet is a 58 and 12.5 pilot
the factory head gasket is only .010 thick...there is no thinner gasket out there made

this is my combination ........and this thing rips both bottom end and top end....launches off the line well

2006 ltz50

wheels rotated and spacers on rear
duro tires rear 16x8-7 fronts 16x6.5-7 ....stock on predator 50, way better handling and traction
cylinder head shaved .015 ...intake port lightly ported
fmf exhaust
k&n filter with outerwear
main jet 80 pilot 22.5...vp race gas mr9, 87 octane, oxygenated
ltz90 cdi
nology plug wire
dr pulley 6 gram sliding weights 17x12
lightened rear clutch shoes 200 grams