COMP Cams 3135KT Adjustable Fuel Pump Eccentric User Manual

Ford Roller Timing Set

With Adjustable Fuel Pump Eccentric

(Part # 3108KT, 3121KT, 3135KT)

Thank you for choosing COMP Cams® products; we are proud to be your manufacturer of choice.
Please read all of these instructions carefully before beginning installation and also take a moment to
review the included limited warranty information.

Note: The installation procedures which follow
assume that the engine has been disassembled
and cleaned as it would be for a timing set change.

Tools & Supplies Needed:

o Torque Wrench
o Degree Wheel (Part #4791)
o Assembly Lube or Camshaft Lube (Part #154)
o Thread Locking Compound (Lock-tite)

Installation Instructions

1. Prepare the Engine. Loosen all rocker arms so that the camshaft can rotate freely.

2. Clean everything! Make sure that the engine mounting surfaces and timing set components are as

clean as possible. The life of the chain and sprockets depends on it.

3. Install the Dowel Pin. If you engine original used the two-piece fuel pump eccentric and the short

dowel pin, remove the old down pin. Press the new dowel pin into place, making sure that it is
fully seated in the camshaft. Note: Some older engines have a spacer on the camshaft and a

camshaft sprocket which is flat on the back. If your engine has one of these spacers, remove and
discard it. The new camshaft sprocket has the spacer machined in it.

4. Align the Engine. Rotate the crankshaft until the number one piston is at top dead center. The

crankshaft key should be pointing straight up. Rotate the camshaft until the dowel pin is pointing
straight down.

5. Assemble the Timing Set. Select the appropriate keyway and timing mark on the crankshaft

sprocket for the camshaft timing baseline desired. We recommend the standard timing position,
which uses the round timing mark and round keyway. Loop the chain over the camshaft sprocket.
Align the camshaft and crankshaft timing marks and loop the chain around the crankshaft sprocket.
Lift the sprocket and chain assembly into place on the camshaft and crankshaft. Slide the
crankshaft sprocket onto the crankshaft, while sliding the camshaft sprocket onto the camshaft.
Make sure that the sprockets are fully seated on their shafts.

6. Install the Fuel Pump Eccentric. Install the eccentric onto the camshaft sprocket making sure that

the dowel pins fully engage the proper holes in the eccentric. Install the proper bolt and washer
(supplied) and thread it all the way in, but leave it slightly loose. Check for clearance between the
washer and the dowel pin. If the washer touches the pin, remove the pin and grind one end until the
pin will no longer protrude through the eccentric, then re-install the dowel pin. The adjustable fuel

Part # 150

Revised 12/6/04

pump eccentric is infinitely adjustable so you can fine adjust your engine’s camshaft timing to
exactly where you want it.

7. Adjust the Camshaft Timing. Do NOT try to turn the camshaft with the eccentric unless there is
NO LOAD on the camshaft. Make sure that the camshaft bolt is LOOSE. For a simple

installation, adjust the fuel pump eccentric to the desired timing setting. For a more accurate
installation, use a degree wheel. The degree wheel method is strongly recommended.

8. Torque Loose Bolt. Apply a generous amount of thread locking compound to the camshaft
sprocket mounting bolt. torque the camshaft sprocket mounting bolt to 40-45 ft-lb.

9. Lubricate the Timing Set. Make sure that the engine oil has a clear path to the timing set through
the lifter valley oil drain-back holes, or through some other means. A timing set requires plenty of
oil to survive. Before installing the timing cover gasket and timing cover, pour plenty of assembly
lube over the sprockets and bearings. Assembly lube will stay on the sprockets until the engine is
started.

10. Install the Timing Cover and Gasket. Install the timing cover gasket using a small amount of
gasket sealer if desired. Mount the timing cover and the rest of the engine accessories according to
the manufacturer’s procedures.

Limited Warranty

Competition Cams, Inc. warrants that all of its products are free from defects in material and workmanship, and against
excessive wear for a period of (1) one year from the date of purchase. This limited warranty shall cover the original
purchaser.

Competition Cams, Inc.’s obligation under this warranty is limited to the repair or replacement of its product. To
make a warranty claim, the part must be returned within (1) one year of purchase to the address listed below, freight
prepaid. Items covered under warranty will be returned to you freight collect. It is the responsibility o f the installer to

ensure that all of the components are correct before installation. We assume no liability for any errors made in
tolerances, component selection, or installation.

There is absolutely no warranty on the following:

A) Any parts used in racing applications
B) Any product that has been physically altered, improperly installed or maintained;
C) Any product used in improper applications, abused, or not used in conjunction with the proper parts.

There are no implied warranties of merchantability or fitness for a particular purpose. There are no warranties,

which extend beyond the description of the face hereof. Competition Cams, Inc. will not be responsible for incidental and
consequential damages, property damage or personal injury damages to the extent permitted by law. Where required by
law, implied warranties or merchantability and fitness are limited for a term of (1) one year from the date of original
purchase. This warranty gives you specific legal rights and you may also have other legal rights, which vary from state to
state.

Part # 150

Competition Cams, Inc

3406 Democrat Rd.

Memphis, TN 38118

[phone] FAX [phone]

www.compcams.com

Revised 12/6/04