Edelbrock 4730 user manual

Street/Strip Camshafts for

Honda/Acura B-Series VTEC Engines

Proper installation is the responsibility of the customer. Improper or incomplete installation could result in poor

performance, related component damage, potentially severe engine damage, and will void your warranty. If you do not feel

Catalog # 4730

INSTALLATION INSTRUCTIONS

PLEASE study these instructions carefully before installing your new Street/Strip Camshafts for Honda/Acura B-Series VTEC

Engines. If you have any questions or problems, do not hesitate to contact our Technical Hotline at: 1-800-416-8628 from 7am-5pm PST, Mon-Fri, or via e-mail at: Edelbrock@Edelbrock.com. Please fill out and mail your warranty card.

• Note:

comfortable installing these parts, we recommend having the installation performed by a professional mechanic.

• Description: The Street/Strip camshafts for Honda/Acura B-Series VTEC engines provide best performance up to 9000 RPM. They are ground from chilled iron and nitride hardened for outstanding durability. Due to the increased lift of these camshafts, changing valve springs is required.

Cam Specifications (Vtec Lobe):

Kit Contents

Qty. Description

❑ 1 Intake Camshaft ❑ 1 Exhaust Camshaft ❑ 1 Container of Assembly Lube

• Recommended Related Products: Due to the high rpm nature of the Street/Strip Camshafts, a programmable or modified ECU is recommended to overcome the rev limiter for off-highway race vehicles only. Fine tuning on a dyno is recommended for maximum performance. We recommend the use of Edelbrock Adjustable Cam Gears, #4721 (silver) or #4723 (red), to adjust cam timing for best performance. To order a catalog, call (800) FUN-TEAM, or visit www.Edelbrock.com.

• Tools and Additional Parts Required:

1. Edelbrock #4737 - Street/Strip Valve Spring Kit

2. Honda #07AA-PR3020A - Tappet Adjuster Wrench

3. Socket Wrench with 10, 12, 14 & 19mm Sockets (Long sockets or extentions may be required.)

4. 5/8” Spark Plug Socket Wrench

5. Long Feeler Gauges (.006” & .008”)

6. Adjustable Torque Wrench

7. Automotive Sensor Safe Silicone Sealant

INSTALLATION NOTES

• Note: Make sure your engine is in good running condition before installing the Edelbrock Street/Strip Camshafts. If your engine is not in good working order, installation of these high performance camshafts could result in premature engine wear. It is recommended to check the wear of the camshaft journals before installation by checking the oil clearance as shown in the factory service manual. Checking the camshaft end-play, and rocker arm wear is also recommended.

• Remember: When working on your engine, especially when oil or fuel is present, always work in a well-

ventilated area. Keep all sparks, open flames, or other sources of ignition away from the work area. Failure to do so could result in a fire or explosion causing vehicle or property damage, personal injury, and/or death.

• Before Beginning: This installation can be accomplished using common tools and procedures. However, you should have a basic knowledge of automotive repair and modification and be familiar with and comfortable working on your vehicle. If you do not feel comfortable working on your vehicle, it is recommended to have the installation completed by a professional mechanic. Keeping your specific vehicle’s Service Manual on hand for reference is helpful.

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Catalog #4730

Brochure #63-0210

INSTALLATION PROCEDURE

1. Make sure the engine is cool and the vehicle is on level

ground. Set the parking brake. If you have an original equipment radio with anti-theft protection, make sure to write down the code before disconnecting the battery. After installation, you will need this code to restore radio operation. It is recommended to clean the valve cover, as well as the area surrounding the valve cover, to avoid getting dirt or debris into the engine. Disconnect the negative cable from the battery.

2. Disconnect the PCV hose and ground wire from the valve

cover. Using a 10mm socket, remove the four cap nuts holding the spark plug wire cover. Remove the spark plug wire cover and remove the spark plug wire boots from the spark plugs. Using a 5/8” spark plug socket, remove the spark plugs. This will make turning the engine over in step 5 easier. Using a 10mm socket, remove the remaining eight nuts and washers holding the valve cover, and carefully lift off the valve cover.

(Note: Inspect the valve cover gasket and rubber seals surrounding the spark plug holes. If they are in good condition, they may be re-used). Set the

cover, gasket, and seals aside.

Check that the no. 1 cylinder is still at TDC. If not, continue to rotate the crankshaft pulley counterclockwise until the no. 1 cylinder is again at TDC.

7. Remove the timing belt tensioner access plug and loosen the belt tensioner adjusting bolt 1/2 turn using a 14mm socket. Push on the belt tensioner to remove tension from the timing belt, then tighten the adjusting bolt to hold the tensioner in place.

8. You may now slide the timing belt off of the camshaft sprockets.

9. Remove the cam sprocket bolts and remove the cam sprockets, being very careful not to lose the cam keys that locate the sprockets onto the camshafts. You may now remove the bolt holding the back timing cover using a 10mm socket. Remove the cover and inspect the seal between the cover and the cylinder head; if it is in good condition, it may be re-used.

10. Using the Tappet Adjuster Wrench, loosen the tappet adjusting screws on all rockers.

3. Loosen and remove the three distributor mounting bolts using a 12mm socket. Remove the distributor from the cylinder head and rest it carefully next to the head, you do not need to unplug the distributor from the wiring harness. Be careful not to lose the o-ring seal. Inspect the seal for damage. If it is in good condition, it may be re-used.

4. Remove the two bolts holding the middle timing belt cover using a 10mm socket. Remove the middle timing cover and set aside.

5. Turn the steering wheel so the front tires are pointing to the left. Now you can access the crankshaft pulley bolt through the fender liner. Rotate the engine counterclockwise using a 19mm socket until the no. 1 cylinder is at top dead center (TDC) on the compression cycle. The no. 1 cylinder is at TDC when the white TDC mark on the crankshaft pulley is aligned with the pointer on the lower timing belt cover.

11. Loosen the bolts holding the camshaft holder plates and camshaft holders (cam caps) using a 12mm socket on bolts 1-10 and a 10mm socket on bolts 11-14 of each set of camshaft holder plates (See Fig. 1-A & 1-B). To prevent any possible warpage of the plates and cam caps, loosen each bolt 1/3 turn at a time in the sequence shown. Repeat until all bolts are fully loosened.

14 10 6

Fig. 1-A - Intake Cam Plate Torque Sequence

14 10 6

3 7

4 8 12

3 7

4 8 12

11913 5

6. Using a 14mm socket, loosen the camshaft sprocket bolts approximately 1/2 turn. Do not remove the bolts.

Fig. 1-B - Exhaust Cam Plate Torque Sequence

Catalog #4730

Brochure #63-0210Page 2 of 4

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