Kx 500 cylinder porting software

Pros dont look at it as the cost of the tools, you look at it as the cost of messing up a cylinder head, the cost of not doing it right and wasting all your time, the cost of getting your butt kicked in a race because you were at a huge disadvantage from not having enough horse power, the cost of all those hours you spent trying to make tools. Jason from jt engine works porting a kx500 cylinder kx guru racing. In this version sold from year 1987, the dry weight is and it is equiped with a single cylinder, twostroke motor. We also specialize in many performance modifications and services. There is no 2stroke displacement limit for our software, for example you can have a 125, 250, 500, 700 single cylinder and our modules will work flawlessly. All 2stroke porting packages include complete porting, not the fake fluffy crap that most in and out porting and big time socal hop up shops offer. What i did was measure two stock cylinders and compared to a team green cylinder. According to all the information i could find it adds 2 hp and keeps your engine cooler. Mdr front brake disc kawasaki kx 125 250 8902 kx 500 8904. Cr500 porting specs tech helprace shop motocross forums. Well i have been reminded lately that this is a dirtbike forum where i can ask questions so i figured id give it a shot.

It had been ridden hard and put away wet, but appeared to be. Two stroke cylinder porting tips watch this before you start cutting. Kx500 kawasaki team green cylinder and port specs kx. There is no 2stroke displacement limit for our software, for example you can have a 125, 250, 500, 700 singlecylinder and our modules will work flawlessly. Without that the kx65 motor will never come close to running a like the ktm. You pose the question of how pc can offer a pipe before the bike is even available. The complete beginners guide to kx500 topend rebuilds. To window a kx500 piston or not to window kx guru racing. Jun 18, 20 an explanation of the how the transfer ports on a 2 stroke cylinder work, along with tips for porting 2 stroke transfer ports. At first, the kx500 looked fun, interesting, and all that, but im now under. For years the common belief of big bore kx riders was to window your piston. Eric is well trained in the use of the latest software programs that the.

At the time of its release, several top manufactured sported entries in this class, including yamaha, suzuki, honda and the classleading maico. The piston crown opens and closes the exhaust and transfer ports. There are many ways to do the job i guess, but heres what we did. Since the exhaust pipe, carburetor, cylinder porting, and cylinder head design are all tied to the amount of heat that an. We make billet engine cases to suit 500cc twostoke engines and make aluminum frame. Best money spent is on setting up the head properly and if you want the best overall spread of power our package of head setup, advanced porting and v force reedcage will gain approx 10rwhp up top with more power everywhere from idle up to peak. The kx500 can benefit from carefull matching of the corresponding port heights and widths but simple decarnonning of the kips systems will make the biggest difference.

The stock kx head design is terrible and the cylinder porting holds it back up top. So im looking at getting it boredwelded and then replated. It was developed ahead of its time, speaking engine. Two stroke performance tuning chapter 3 porting and cylinder scavenging today, when we take a look down the cylinder of a twostroke engine, we find its walls literally filled with ports to handle the induction, transfer and exhaust phases of gas flow through the engine. There is one or more forwardlocated exhaust ports, two or more side transfer ports, and one rear intake port. Kawasaki kx 500 technical specifications ultimate specs. Feb 27, 2018 jason from jt engine works porting a kx500 cylinder kx guru racing. Today i decided to sell my kx 500 has a little bit of issues, first gear needs attention, and i went overboard while doing a wheelie the other week in saying that we will need new rear fearing this bike is considered as a legend so i wont be letting it go for. We carry pistons, valves, fuel controllers, intake kits, clutches, and so much more. So over at kxriders several members are discussing the viability of it as well as modifications to the existing design. However, before the bike was ported we ran the pro circuit platinum pipe with r304 silencer and vforce3 reed system. From a 49cc racing engine, to a gp 125 engine, or a 1500 mercurial triple engine, or a 250 kart engine, racingsm software suits all. We ride the brc 500cc twostroke kit bike motocross.

The morbidelli 125 twin road racer is a rotary valve engine. On page 51 gordon uses the term onepercenter, the term refers to an american motorcyclist association quote that 99% of motorcyclists were lawabiding. Jt engine works kx 500 gusset kit instructions kxguru racing team duration. Main reason for wanting the software is to play with the port timing. One with standard polished ports and head, it goes ok and works well in poor grip.

This engine produces massive torque at low rpm up to peak at 6500 rpm, a timearea calculation will show this in figures too. Not looking for a fully resored bike, just want neat as possible doesnt matter if it needs work show me what you have. An explanation of the how the transfer ports on a 2 stroke cylinder work, along with tips for porting 2 stroke transfer ports. This weeks 2stroke hardware section has kx500 items from wiseco and. Jason from jt engine works porting a kx500 cylinder kx. The cylinder has the typical cracking in the exhaust ports in the bore. And, well, ktm ended its 500cc program in 1993, then went bigger to a 550cc. It has a big cylinder, lots of cooling, nikasil cylinder and kips.

I dont like holding my cylinders im porting in my lap but how you hold it does not matter. Corner to corner acceleration is vastly improved, also clearing jump gaps is on par with superminis. Oct 11, 20 for years the common belief of big bore kx riders was to window your piston. Hi, im looking for an original 1996 1981 honda cr, yamaha yz, suzuki rm or kawasaki kx 500 250 125 or 80.

All kawasaki kx500 parts jk racing vintage motorcross. Calculates port heights from durations, or durations from port heights. The cylinder was ported by tom morgan for more controllable power. And the exhaust port was lowered from the stock specs the clean up of the transfers, bridges, boost ports, and floor ports was crude and nothing special ill be posting pics soon. The kawasaki kx 500 model is a cross motocross bike manufactured by kawasaki. You go on to say that they just get a stock pipe from wherever and copy it. I have ported a few cr500 cylinders but i now have an kx500 cylinder for a buddy of mine witch will be using it for drag racing and hillclimbing. Kx500 portingpower mods kawasaki 2 stroke thumpertalk. If you are looking for performance you have come to the right place. The cylinder needs to be ported by someone that knows kx65 motors and can grind in sub intake ports across the back of the skirt. Includes c630 nickelaluminumbronze valve seats and guides. Low miles,rebuilt shock,new air cleaner,good motor,never ate dirt. The kx500 is the highest specification model in kawasakis kx series, which also includes 250 cc, 125 cc, and 100 cc models, as well as lower specification models. This is an instruction how to do a topend rebuild on a kx 500.

New and replated cylinders ship your old cylinder to. The engine produces a maximum peak output power of 65. Slim profile head for tiny two stroke engines or motors. How does a posi track rear end work on a plymouth, it just does. Ported cylinder and piston on a kx 250 all things moto.

Here at motosport youll find all the dirt bike parts to suit a wide variety of bikes and riding styles. The engine is paired with a 5speed transmission and total fuel capacity is 2. General engine specs the kawasaki kx500 has a single cylinder, twostroke gas engine, with a displacement of 499 cc 30. Eric gorr racing offers allinclusive porting packages for all types of 2stroke and 4stroke. Most pictures are of my own bike 1989 during a rebuild spring 2005. There is an extensive port diagram on cad describing the kx cylinder and its technology.

Lukes racing 2300 patterson lake rd pinckney, michigan 481699762 7346480103 cylinders are listed with prices to buy outright and also to buy with a credit for your core cylinder. Basically there wasnt much special about the team green cylinder. A lesser work would have surely passed into nostalgia heaven long ago. Kx500 kawasaki team green cylinder and port specs kx guru. This kit is ideal for porting and polishing small 2 stroke cylinders. This page is dedicated to kx450f parts and accessories. Power is provided by a 2stroke, 499cc, liquid cooled, reed valve, singlecylinder engine with kick starter. Includes brand new big bore cylinder assembly, psiton and gaskets. Keep in mind i do have a decent amount of experience with big bore 2ts multiple k5s, c5s, ktm550, etc already got excel wheels and flat track soft compound tires, lowered it, redid all bearings, steering stabilizer, etc. My son runs a modified kx65 with a ported cylinder and we noticed that it hit harder at higher rpms.

Jason from jt engine works porting a kx500 cylinder kx guru. If your looking for a project the kx would keep you busy chasing cracks and mopping your buddies drool up. Other popular changes for more top end include lowering the compression ratio by turning metal from the head by setting the squish angle to 18 degrees. Power is provided by a 2stroke, 499cc, liquid cooled, reed valve, single cylinder engine with kick starter. So if anyone could shed some light on this and help me with some porting specs.

Forum main tech helprace shop question for the dads kx 65. Kawasaki kx450f kx 450f ported cylinder head cam caps. An engine port is an open window in the cylinder wall for the intake or exhaust of fuel mixture airgas. Kawasaki developed the bike on an annual basis through the 80s. Our kit includes an increased stroke in the crankshaft, an smaller piston via a new cylinder assy, a new exhaust system, porting and head mod. This paper is free for distribution and may be revised, for further references please visit. Porting the cylinder ports is only going to make the power band hit even higher and harder. Cylinder works began in 2008 as the first aftermarket company to provide o. This is an instruction how to do a topend rebuild on a kx500. New plated kawasaki kx 500 19861987 cylinder and wiseco piston std 86mm fits. The kawasaki kx500 was developed as an aircooled 500cc motocross bike for competition in the 500cc and openclass of motocross. We carry a large selection of dirt bike exhausts to give you the option of a race ready system like the yoshimura rs4 complete system or the more modest fmf powercore 4 complete exhaust system for your.

Two stroke performance tuning a disc partially cut away and attached to the end of the crankshaft opens and closes an inlet port in the side of the crankcase. Adam millar ported the cylinder and modded the head and added the decompression. Assign fixed relationships between transfers and exhaust port. Ported cylinder and piston on a kx 250 ff, you got me kind of wondering, by something you said. Those of us who have grown up in the japanese twostroke. The kawasaki kx500 is one of the most iconic twostroke machines ever produced. Ill use my old bridge port to bore the hole for the kicker boss and. Porting reducing the hit on a kx65 peewee thumpertalk.