JIMS 1800 User Manual
Instruction sheet for part no.1800, No.1800-is “from the track... to the street, Big twin hydrosolid tappet
Instruction Sheet For Part No.1800
Rev D
11/04
No.1800-IS
“From The Track... To The Street!”
555 Dawson Drive, Camarillo, CA 93012 • Phone 805-482-6913 • Fax 805-482-7422 • www.jimsusa.com
CAUTION: Wear safety glasses. Excessive force may damage parts and tool.
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BIG TWIN HYDROSOLID TAPPET
This tappet replaces and surpasses H.D.
®
No.18523-
86 and S & S
®
No.33-5341.
No.1800 - Use on Big Twin 1984-99, Sportster 1986-
90 and Buell
®
1987-90. Standard O.D.
.8425.
Safely add more horse power to your higher RPM levels with a simple
installation of Hydrosolids, use on any cam, be it a solid or hydraulic
cam, and receive 3 to 6 more usable horsepower after about 5600 RPM. To the safest RPM level possible for your valve train.
Hydrosolids have a built in anti pump-up device. So at the time your springs start to surge and go into a harmonized distortion
causing the tappet rollers to start lofting off the back side of your cam, the hydro-solids will not pump-up to allow your valves
to hit each other.
NOTE: Hydrosolids will be adjusted as a solid lifter in a cool motor only. If you are unfamiliar with solid lifter adjustment, seek
professional help. Otherwise serious valve train motor damage will result.
READ ALL INSTRUCTIONS BEFORE STARTING JOB
1. Refer to H.D.® Service Manual for tappet installation. If installing a cam and tappet blocks at the same time follow those
instructions.
2. Place the front piston at TDC compression.
3. With all four Hydrosolids installed start with the front intake pushrod making sure tappet is at the lowest point on the cam.
4. Extend the pushrod adjuster to zero lash (no up and down free play. See pushrod adjustment chart and follow adjustments
for your particular pushrod. Example: If your pushrods have 24 threads per inch extend pushrod 5 hex wrench flats) this adjust-
ment will bleed the Hydrosolid tappet, which may take 5-15 minutes or longer to bleed off oil pressure. What we're looking for
is a pushrod that just barely turns with your fingers. If after 15 minutes the pushrod is still turning easily, extend the pushrod until
you can just barely turn pushrod with your fingers. If you can barely turn the pushrods with your fingers and the Hydrosolids are
at the lowest point on the cam, then they have been adjusted properly.
5. CAUTION: If you cannot turn pushrod with your fingers DO NOT rotate engine.
6. Repeat exact procedure for the next three pushrods, making sure to be on the lowest position of cam for the tappet you're
adjusting.
MAINTENANCE FOR HYDROSOLIDS IS AS FOLLOWS:
1. New motors, after the first 50 miles (at time of first oil change), check adjustment of pushrods. You should still be able to turn
them with your fingers.
2. After 200 miles, readjust if needed and as needed until all your motor
parts are seated.
3. Recheck as you would for solid tappets, at about 2,000 mile intervals.
Pushrod Adjustments For Hydrosolids - A STARTING POINT ONLY
Threads
Hex
Distance
Wrench
Total Travel
Distance
Per One
per inch
Flats
Distance
Per Turn
Hex Flat
24
5
.0345”
.0414”
.0069”
28
6
.0354”
.0354”
.0059”
32
7
.0364”
.0312”
.0052”
36
8
.0360”
.0270”
.0045”
40
8
.0336”
.0252”
.0042”
52
11
.0352”
.0192”
.0032”
Popular Pushrods
JIMS
®
Pro-lite
24
No.s 2380, 2400
Slim Jims
32
No.s 2404, 2369
Andrews
28
Andrews
32
Crane
28
New Time Savers
Crane
24
Old Time Savers
Crane
32
H.D.
32
S & S
32
Screamin Egl.
32
Rivera
40
Taper Lite
Rev Tech
36
NOTE: FOR USE ON ADJUSTABLE PUSH RODS ONLY