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Why the different pushrod sizes on an 1989 HD sportster

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Longest is the front cyl exh two same size are intakes and the shortest one is rear exaust check you tube for a video on setting them up they are different proceeduers for most bike as wel as hydrolic lifters they need to bleed down find the one for your bike

Posted on Dec 02, 2014

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Posted on Jan 02, 2017

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SOURCE: Repair manual for 1989 HD Sportster

http://www.scribd.com/doc/95842848/Harley-Davidson-Service-Repair-Owners-Manuals-Download-From-Listing

Posted on Oct 18, 2012

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What is the Banjo bolts on the front of a 1989 Harley Davidson Sportster?


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Witch way do the pushrods go in the pushrod blocks on a 2000 lowrider


Hi Anonymous, for big twin engines solid pushrods come in different lengths, depending on the manufacturer all four could be different lengths or only three will be different and two will be the same. Push rods that are the exactly the same length go into the intake slots. Sportster push rods will come in two different lengths the short ones go into the intake slots and the long ones go into the exhaust slots. For Big Twins that have four different lengths the order from shortest to longest is as follows: Rear Intake, Front Intake, Rear exhaust, Front Exhaust. Some OEM push rods will have colored bands that can be mismarked or the bands could partially or fully wear off, thats why I only go by length. Good luck and have nice day.

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Hi Anonymous, for big twin engines solid pushrods come in different lengths, depending on the manufacturer all four could be different lengths or only three will be different and two will be the same. Push rods that are the exactly the same length go into the intake slots. Sportster push rods will come in two different lengths the short ones go into the intake slots and the long ones go into the exhaust slots. For Big Twins that have four different lengths the order from shortest to longest is as follows: Rear Intake, Front Intake, Rear exhaust, Front Exhaust. Some OEM push rods will have colored bands that can be mismarked or the bands could partially or fully wear off, thats why I only go by length. Good luck and have nice day.

Jun 16, 2012 | 1993 Harley Davidson FXR Super Glide

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Were does the singal red push rod go the intake or the exhaust


The latest book I have is a 2002 model book and it says that the pushrods marked with three pink bands and are 10.800" (274.32mm) are exhaust pushrods. The intake pushrods are marked with a single brown band and are 10.746" (272.94mm) long. Lay all the pushrods side by side and check the lengths. The long pushrods are the exhaust pushrods.

Good Luck
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Aug 05, 2011 | 2002 Harley Davidson XL 1200 C Sportster...

1 Answer

I need to change out bad pushrod rings on my 1989 sportster 1200, and i need detailed step by step directions, as i am ignorant in this area...


Hi, Peter you have 2 options method A use a set of bolt cutters to cut out the stock pushrods and replace them with adjustable aftermarket taperlites and new o-rings or method B remove the rocker boxes and stock pushrods replace the o-rings and rocker box gaskets, I prefer method A because it is faster and you can remove the adjustable push rods to do hydraulic lifter or cam work without taking off the rocker boxes the downside is the expense of the adjustable push rods and I am sorry you can't find the first and best tool you ever bought for your Harley Davidson but despair not for a mere $7 you can download another one. For more information about your issue, please visit the websites below, and for specific information or questions, please feel free to contact me at xlch@mail.com. Good luck and have a nice day. Harley Sportster XL883L Rocker Box Upper and Lower Gasket Replacement
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How do i adjust my rockers on the rear jug took apart 2 fix base gaskets on rear jug


If your bike is equipped with the Evolution engine there is no adjustment on the rocker arms, the engine is equipped with hydraulic tappets. The pushrods on the Big Twin Evo engine are color coded and go in a particular position. They are different lengths. The blue color coded pushrod is the rear intake pushrod, the purple color coded pushrod is the exhaust pushrod. The pushrods for the Evo Sportster are all the same and there is no adjustment on those eiher provided they are stock.

Now, if you are working on something other than an Evolution engine or you have aftermarket pushrods, please repost and I'll tell you what I know about the valve adjustment for your engine.

Steve

Mar 26, 2011 | Harley Davidson FXST - FXSTI Softail...

1 Answer

What are the torque specs for the push rods on a 1993 sportster


Pushrods on a completely stock 1993 are one piece and have no torque spec as they are not of the adjustable variety. If you do in fact have "adjustable pushrods" and have set the adjustment according to the pushrods manufacturer's specification in conjunction with a good Harley service manual the nuts on the pushrod need to be good and snug........Tight, but do not bear down on the wrenches. Use your best judgement.

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Looking for instructions to adjust valves on 1987 H.D.


If the engine is stock, there is no adjustment to the valves. The engine is equipped with hydraulic tappets that take up for any wear or heat expansion of the cylinders. The pushrods are non-adjustable but are of different lengths. They are color-coded as to what position they go in.

Now, if your engine has been modified and adjustable pushrods installed, they should work the same way unless they are way out of adjustment. Then, it depends on "whose" pushrods they are as not all pushrods have the same threaded ends on them. But, all is not lost.

Take one of the pushrods out of the engine and adjust the pushrod as short as it will go. Now, turn the end out until it makes the pushrod exactly 0.100" longer while counting the "flats" on the adjuster. When you install the pushrod, make sure the tappet is at it's lowest point in the bore. Put the pushrod in, don't forget the tube and the new O-rings, and adjust the pushrod out until you have zero backlash. Then adjust it out the additional number of "flats" that it took to make it exactly 0.100" longer. Lock the adjuster down. What you're doing here is the plunger of the tappet has a travel of 0.200" total and you're adjusting the pushrod so that the plunger is halfway in the middle of its travel so that it's got equal travel in both the up and down direction.

Good Luck

Jun 02, 2010 | 2003 Harley Davidson FLHTC Electra Glide...

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Diagram oils system 1989 sporster


Yes, I have a diagram of an Ironhead Sportster. They're basically the same. The only difference is the hydraulic tappets in the Evolution models. How can I help? wd4ity@bellsouth.net

Nov 11, 2009 | 2000 Harley Davidson XL 1200 C Sportster...

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