How big is a Sportster carburetor jet engine?

Sportster Carburetor Jet Sizes. KEIHIN CARBURETOR MAIN JET SIZES 1988 TO 2006. Year 1988 Engine 883 – Jet Size 170 (California 165) Year 1988 Engine 1200 – Jet Size 200 (California 180)

What kind of jet do you use for a Sportster?

I am currently using a #48 slow jet and a #180 main jet with no shims on the needle and 1.5 turns out on the screw. It seems to be running pretty well now (replaced the 45/175 that the dealer had in there). I’m a bit concerned about running rich now but as best I can tell it’s worlds better than before, and I’d rather be rich than lean any day.

Where is the carburetor on a Harley 45?

The Linkert DC found on the 1959-1965 Harley Servi-car 45 flathead was left-handed, the float was on the right side of the ones put on Sportsters and Big-twins, since Harley flatheads have the carburetor on the left side of the engine.

What kind of pipes do you use for a Sportster?

When it comes to pipes you can’t hardly find one that will work on two differant size motors, like the 883 and the 1200 sportsters. What i have found is most are tuned for the bigger 1200’s That’s why my kerker 2into1 was flowing to much for my little 883, but after tuning it to closer match the smaller motor the differance is night and day!

Sportster Carburetor Jet Sizes. KEIHIN CARBURETOR MAIN JET SIZES 1988 TO 2006. Year 1988 Engine 883 – Jet Size 170 (California 165) Year 1988 Engine 1200 – Jet Size 200 (California 180)

Where is the number stamped on a Sportster jetting?

Making it a stickie. On the slow jet I cant find a number where is the size stamped? It is very small and should be on the large flat end with the slots for the screwdriver. I have bought jets off ebay that have no markings though Might need a magnifying glass to read it.

How big should the jetting be on a Harley?

If your stock jet was a #42 the next size larger will be #44 or #45. Only increase the jet sizing one size at a time to avoid an overly rich idle. An EZ-Just mixture screw will also assist in fine tuning once you have the correct jetting.

How big is a 1988 Harley Davidson carburetor?

KEIHIN CARBURETOR MAIN JET SIZES 1988 TO 2006 Year 1988 Engine 883 – Jet Size 170 (California 165) Year 1988 Engine 1200 – Jet Size 200 (California 180) Year 1989-1991 Engine 883 – Jet Size 175 (California 155) Year 1989-1991 Engine 1200 – Jet Size 175 (California 160) Year 1992-1994 Engine 883 – Jet Size 160

How big is a Harley Davidson CV carburetor?

Harley Davidson Pilot Jets for CV Carburetors are normally sold in sizes 40, 42, 45, 48, 50, and higher. A Stage 1 Carb Kit will normally offer you a proper range of jets for your particular model. If your stock jet was a #42 the next size larger will be #44 or #45.

When to replace the carburetor on a Harley Davidson?

Harley carburetor jetting should only be performed after completing the fine tuning procedure described under Performance Tuning and your Harley is still running too lean. A good rule of thumb is to replace the Pilot Jet first and only replace the Main Jet once the engine’s idle and midrange are satisfactorily tuned.

When to get the right carburetor series and series?

A excessively rich condition can cause serious engine damage. You have a big investment in your performance engine don’t risk your investment to save $50, get the right series and size the first time, always consult with usbefore making your final decision.

How much does it cost to change a CV carburetor on a Harley Davidson?

Pre-1989 Harley’s used a two bolt flanged manifold, whereas a CV carburetor simply slips onto a rubber boot and is held in place by the air cleaner’s backing plate. Total conversion shouldn’t cost more than 200 bucks… less if you can find a buddy with a spare CV carb in good condition.

What kind of carburetor does a Harley Davidson use?

Harley Davidson motorcycles prior to 1989 used a standard butterfly carburetor and are excellent candidates for upgrading to the newer CV carburetor. The upgrade is quite straight forward and for the majority of models only requires a Flange Adapter be fitted between the carb and the manifold.

What do you need to know about CV carburetor tuning?

Notice: All instructions and the EZ-Just are intended for a Harley CV carburetor only. Mixture tuning on your Harley Davidson CV carburetor is a simple procedure that can easily be performed with basic tools. Anytime you rejet or change exhaust or air cleaner intake it is suggested to adjust the mixture.

What is the CARB stamping code on an 86 Sportster?

The kit Number is 29081-90C for 86 and later Sportsters. Carb stamping is (27FA) plus a 4 character date code. Required possible grinding of the right rear corner of the front cylinder head, due to interference with the carburetor throttle pulley and cable guides, for proper clearance 16)

How to tell if your carb jetting is too rich?

A rich ratio is one where there is too much fuel in relation to the air flow. Signs that your air/fuel mix is too rich are black smoke in the exhaust, blackened and fouled spark plugs and a poor idle. A lean ratio means you are not getting a sufficient amount of fuel in relation to your flow of air.

How to correct a carb jetting motorcycle backfire?

Start the motorcycle cold with the choke on and see if there are any signs that it is loading up with fuel. Decrease the choke to lessen the fuel. Allow the bike to warm up to riding temperature, about two minutes. How does the bike respond to a standing throttle range? Is it smooth in the low RPM range from idle to about 1200?

What kind of carburetor does a Sportster use?

Contrary to popular folklore, all Keihin non-CV carbs did come with accelerator pumps. In 1988, the stock Sportster carburetor was upgraded to a Keihin 40mm, slide-type, constant-velocity model. It was quickly discovered that the lack of an accelerator pump was a shortcoming.

Can you knock off a Harley Davidson carburetor?

There is no guarantee that any part (original or CVP) will fit those knock-off carburetors. If your CV carb does not have the name Harley Davidson cast above the bowl on each side it is a knock-off. The carburetor atomizes gas in proper proportions to the air pulled in through the air intake.

Why does compression drop on a Sportster hammer?

The answer is that in the case of the 1275 at least, absolutely. The reason is that if you’re going to be making breathing improvements, you’ll need new pistons anyway. Making the valves bigger and running more overlap in your cams and running late intake close timing all cause the compression to drop.

What kind of CARB do I need for a XL1200 Sportster?

Proper fueling is critical. If your bike is carbureted (86-06), this means jets. For a CV40 carb (commonly used up to a little over 90hp), a good starting point is a 185 main, a 45 pilot, and 3 turns out on the idle mixture screw. On the higher power packages we recommend a Mikuni HSR42 or HSR45 carb.

Correct jetting depends on air cleaner, exhaust, motor, ignition. Your Twin Cam should not have anything smaller than a 48 intermediate & 180 main. With a stock air cleaner & exhaust & proper tire preasure & 93 octane, you will get the best possible gas mileage. https://www.fixmyhog.com/video-index/ Yes. S&S carburetors are excellent. Easy to tune.

What kind of fuel mixture does a Sportster use?

I have bought jets off ebay that have no markings though Might need a magnifying glass to read it. I use 45/180 and 2 and a half turns on the fuel mixture screw. Perfect. Not to rich or lean. 2002 Sportster 1200. How about stock jetting going way back to a 1977 1000 Sportster?

What do you need for a Mikuni carburetor kit?

These kits are complete with everything needed for a total installation. Kits include an HSR 42mm or 45mm carburetor, new performance manifold, rubber flange, high flow air filter, chrome cover, chrome breather kit and mounting hardware. Stock throttle cables from 1990 and later models can be used.

What kind of carburetor does a Mikuni hsr45 use?

HSR45 Kits 45-2 1984 to 1999 1340 Big Twin Evo. Includes a 45 mm big bore carburetor, breather kit #KHS-020 and a 45mm flange. 45-3 1984 to 1999 1340 Big Twin Evo. Same as kit above without intake manifold. 45-4 1999 to present Twin Cam 88/95. Includes 45mm carb, breather kit #KHS-030, new manifold with MAPS location and 45mm flange.

Going fast has never been so easy! The number one performance carburetor for Harley-Davidsons and American Big Twins now slips onto any late model Harley-Davidson using the original throttle cables. Mikuni’s Twin Cam, Big Twin and Sportster / Buell Easy Kits even use Harley’s existing manifold, choke cable and air filter.

What causes CV carburetor on Harley to slow down?

If there is a vacuum leak the gas will be drawn into the leak and cause the engine RPM to slow or fluctuate. DO NOT PERFORM THIS NEAR AN OPEN FLAME. Again it should be emphasized, the #1 cause of carburetor related problems on a Harley or other V-Twin motorcycle is VACUUM LEAKS. The CV carb is dependent upon vacuum to function properly.

What can I do to fix my carburetor on my Harley?

Have you tried these videos? https://www.fixmyhog.com/videos/carburetor-rebuild/ Any quality carburetor cleaner will help clean your carb but many issues are gummed up inside. You will need to take apart the carb. My bike will only idle when the choke is on. May have old gas.

What kind of CARB does a Sportster 1200 have?

Q: 2003 Sportster 1200, I am having problems with my carb. I put an RV cam in it, and Ultima programmable ignition system. The carb is a Ultima R-2, it has a 062 main jet as it is now I get 53miles to a 3-1/2 gal tank. I would like to know how low I can go on the main jet without starving the motor, and gain fuel mileage.

Why is my CV carb not working on my Harley?

Again it should be emphasized, the #1 cause of carburetor related problems on a Harley or other V-Twin motorcycle is VACUUM LEAKS. The CV carb is dependent upon vacuum to function properly. 2) Check that the Needle Jet (nozzle) is installed correctly.

What kind of carburetor does a 1989 Harley Davidson use?

This simple procedure is a great Harley tech tip that applies to all Harley carbs from 1989 to present that use the CV style Harley Davidson carburetor. Earlier models equipped with the older butterfly style carbs (pre-89 Evo’s, Shovelheads, Pans, and Ironheads) are excellent candidates for upgrading to a modern Harley carburetor.

What causes carburetor to pop on Harley Davidson?

The gaskets between the head pipes and the exhaust ports of the heads is a crush fit that will leak if the pipes are removed, reinstalled, or over/under torqued. Cool air drawn into the exhaust at these seals will result in hesitation or popping commonly misdiagnosed as a carburetor problem.

How does carburetor jetting work on a Harley?

Install the carburetor back onto the bike and perform the tuning procedure as described under Carburetor Tuning. As you can see, Harley carburetor jetting is a fairly simple procedure that under most conditions will yield greater performance when requiring a richer fuel mixture.

What are the sizes of Harley Davidson carburetors?

This of course assumes that you are starting out with the stock jet size. Harley Davidson Pilot Jets for CV Carburetors are normally sold in sizes 40, 42, 45, 48, 50, and higher. A Stage 1 Carb Kit will normally offer you a proper range of jets for your particular model.

What do you need to Jetter a Harley Davidson?

Harley carburetor jetting can be accomplished with minimal mechanical knowledge. Tools to perform this task include just a simple set of screwdrivers. You will also need an assortment of jets or a Stage 1 kit . Remove the 4 screws securing the bowl to the base of the carburetor and remove the bowl.

Harley Davidson motorcycles have a long history of carburetors used on their models over the years, but none as popular as the CV carburetor. Introduced in 1988 on Sportster models to replace the Keihin “butterfly” carburetor, the CV also from Keihin introduced a vacuum actuated slide and needle to regulate fuel delivery.

What was the CV carburetor made out of in 1988?

The original CV carburetor in 1988 lacked an accelerator pump commonly used on most carburetors. To compensate for the lack of an accelerator pump and to eliminate lean flat spots, the factory produced the N65C needle whose length, diameter, and taper positions were designed to alleviate the off idle hesitation.

Why was the CV carburetor called constant velocity?

This innovative fuel metering system not only handles the air/fuel mixture throughout the mid range, but also provides a constantly changing venturi or throat size, hence the name CV or constant velocity. The original CV carburetor in 1988 lacked an accelerator pump commonly used on most carburetors.

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