Originally Posted by thack82

This is the Mod list that I've added to my 7yr old Daughter's 2009 Tao Tao Mini Eagle/Loncin 110cc Engine with Full Auto Transmission. I bought a New OEM Honda TRX-90 Head and had it Port/Polished By Withrow Powersports (WPR), Shindy SS Valves, T-Bolts Stage II Hot Cam, Polished 52.4mm T-Bolts High Compression Cast Aluminum Piston, NGKX Iridium Spark Plug, ADA Polished Aluminum Head Plates, Mikuni Monster VM-26mm Carburetor (FMF Power Jet, Jet Kit), SKY Performance 26mm Ported Intake Tube with Polished Adjustable Base Plate Spacer, TRC Racing Gold CDI Box, TRC Racing Hyper Coil & 8mm Hot Wire, FMF Titanium 5.0 Full Exhaust (Head Pipe With Mega Bomb & Silencer), UNI Dual Stage Air Filter, TRX400EX Oil Cooling System, Coolster SSR Nitrogen Gas Shocks (all 3) Re-valved By WPR with Reservoirs, Front Wheel Disk Brake Conversion with Hydraulic Upgrade, Qualex Custom Ultralight Full Body Skid Plates (A Arms, Swing Arm, Belly) New Dyed Peace Powersport Black Plastic/Red Hood/Yamaha Raptor Style Headlights, Peace Powersport Flame Graphic Kit ITP Polished 18x8 - 19x6x10 Wheels with Maxxis Tires, 2001 TRX-90 Wheel Hubs, Fly Handle Bars/Cross Bar Pad.



Lubricants Used:

AMS Oil 10W-40 Synthetic Oil
AMS D.O.T.-4 Brake Fluid
AMSOIL Synthetic Polymeric Off-Road Grease



Don't let people tell you that the China Made Loncin 50cc, 110cc, 125cc Engines are NOT Honda Knock offs. Every Part I listed in that Mod list that was associated with the motor was for a Honda TRX-90 Youth ATV with the 52.4mm Cast Aluminum High Compression Piston that I ordered from T-Bolt being a exception. Everything in the Top End of the Engine is exactly the same except for the Cylinder Bore Dimensions. I did decide to upgrade to a 2003 Honda TRX-90 Cylinder Head because my ATV Mechanic (Withrow Powersports) suggested I buy a Real OEM Honda TRX-90 Cylinder Head because the Honda Heads are made out of a little harder Cast Aluminum and he can be more precise with the Port/Polish Work that he does and it turns out better with the Honda Head VS the Loncin Head. The Loncin 110cc Engine thats in my Daughters quad has a Toker Crank and Rod which is supposed to be the same same Crank and Rod that Honda uses in there CR Mini Dirt Bikes. Go to www.tbolts.com and talk to Vince, he will help you build your China Quad any way you want for any type of racing or riding.

Originally Posted by Kord Collins

what year trx90 would you get the parts off of to make sure they fit the motor u have...i also have the honda knock-off lookin for my daughter to drag race it and need some power...lookin to do all the upgrades that u did...other than different carb...thanks

Originally Posted by Kord Collins

what year trx90 would you get the parts off of to make sure they fit the motor u have...i also have the honda knock-off lookin for my daughter to drag race it and need some power...lookin to do all the upgrades that u did...other than different carb...thanks

Originally Posted by 82 200erace

Anyone have an idea on what jet sizes to put in a stock 110, that has the exhaust upgrade, and the bigger carb and intake, that thack 82 is running. I believe I am running a 95 main,which came stock and a 18 pilot. I have not tried adjusting the fuel screw yet but I have raise and lowered the needle with little to no effect on how it runs. Problem i have is when opened fast it stalls out or wants to. It does idle good, and when WOT it does not die but cuts in and out. It almost sounds as if it is bouncing off a rev limiter, but I know this is not true cause if I open it slowly I get just slightly past 3/4 throttle with it revving really high. When it cuts in and out it really is not revving very high. I have not been able to turn the fuel screw yet to do any tuning has right now there is only 1 inch of clearance so I either need to buy a flex jet to adjust it or the adjustable base to swing it out some.

Originally Posted by thack82

You should be pretty Close I put together a DG Jet Kit before we started building my daughters but we ended up using the 95 Main that came in the Carburetor Stock. On the Pilot if I remember correctly we had to drop it a little, I'll ask Withrow when I talk to him and see if he remembers what size pilot jet we ended up running.

We just figured the 95 would be way to big and it was doing the same thing. WE just kept bumping the main up until it quit. Your elevation is probably different. Try restricting the air that enters the carb, maybe by placing a plastic bag around half of it and securing it with a cable tie, if this seems to help bump the main jet up. Porting the head makes a big difference.

Originally Posted by 82 200erace

I have brought the main down to 72.5 main and I think it is still rich. The reason I say so is that I took the fuel line off the carb to drain the bowl. I let it run at wot, and as the gas started to run out if finally reved up and ran like it should for about 4 or five seconds until the fuel ran out. I was told that if I go below a 70 main then the carb is too big. Whats your thoughts on this as you think it is rich/lean? The dealership I was able to swap jets out at does not have anything smaller than a 72.5 so I have to order from somewhere if I need to go smaller. They also did not have pilots so I used carb cleaners and slowly bored it out it now has no bog down low, and takes right off but I know I may have bored it out one size to many as when I rev it form 0-1/2 throttle I see some black smoke. Needle jet is set at it's leanest setting. Not sure the size of the pilot jet either as I bored it out and have nothing else to compare it to. So I know what the size is and drop down one size or two. But it does start right up and revs real nice to around 3/4 then almost sounds like it is hitting a rev limiter with out much for high revs. I know its not hitting a rev limiter because, stock it reved up more, and like I said when the fuel starts to run out, it took right off and reved up nicely.

Originally Posted by 82 200erace

I have brought the main down to 72.5 main and I think it is still rich. The reason I say so is that I took the fuel line off the carb to drain the bowl. I let it run at wot, and as the gas started to run out if finally reved up and ran like it should for about 4 or five seconds until the fuel ran out. I was told that if I go below a 70 main then the carb is too big. Whats your thoughts on this as you think it is rich/lean? The dealership I was able to swap jets out at does not have anything smaller than a 72.5 so I have to order from somewhere if I need to go smaller. They also did not have pilots so I used carb cleaners and slowly bored it out it now has no bog down low, and takes right off but I know I may have bored it out one size to many as when I rev it form 0-1/2 throttle I see some black smoke. Needle jet is set at it's leanest setting. Not sure the size of the pilot jet either as I bored it out and have nothing else to compare it to. So I know what the size is and drop down one size or two. But it does start right up and revs real nice to around 3/4 then almost sounds like it is hitting a rev limiter with out much for high revs. I know its not hitting a rev limiter because, stock it reved up more, and like I said when the fuel starts to run out, it took right off and reved up nicely.