Engle VZ-25 - VW Performance Camshaft - For 1.1 Rockers

21-4025
Engle VZ-25 - VW Performance Camshaft - For 1.1 Rockers
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Part Number: 21-4025

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$199.95 $179.95
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The Engle VZ-25 Cam is an old spec cam originally designed for racing classes where 1.1:1 rockers were required. It must be used with stock ratio rockers. Getting high lift with stock rockers puts a lot of stress on the valve train so making sure the lifter bores on your engine are in good shape is recommended. The VZ-25 cam pulls well from idle to 6000 RPM and works best in stock or near stock displacement engines, 1600 to 2000cc. Along those lines a stock carburetor won't well, ideally two barrels of carburetion or two dual carbs to match the displacement and cylinder head flow are recommended. .

The VZ25 is similar to the W110 with more top end as it has more lift. More modern cam grinds and higher ratio rockers have surpassed what this cam can do but for those on a budget, this might just be ticket for the performance you are looking for. The VZ series cams are rough on engine cases so sleeving the lifter bores will help reduce wear. Additionally, expect a noisy drivetrain due to the fast ramps and high lifts.

All Type 1 performance cams are 3 Bolt, "early style" or "flat cams" and fit Type 1,2 & 3, 1200cc(40hp) to 1600cc based engines. The cam requires a separately sold, bolt on cam gear and must be used with a "flat cam" style oil pump.

Engle VZ-25 Performance Camshaft Specifications:
.470" Valve Lift with 1.1:1 Rockers

Intake & Exhaust:
Duration 286°
Duration 256° @ .050″
Cam Lift .429"
Lobe Center 108°

Common Cam Card Specifications:
Intake Opens: 20°
Exhaust Closes: 20°
Intake Closes: 56°
Exhaust Opens: 56°

Valve Spring Recommendations:
Dual "Hi-Rev" Springs

Recommended Rocker Assemblies:
1.1:1

Recommended Compression Ratio:
8:1 to 8.5:1

RPM Range:
Idle to 6000

Recommended Carburetion:
Dual, Single Barrel or Dual Two Barrels as displacement increases and performance is desired.

Engle VZ Series Camshafts are designed specifically for use with 1.1 rockers only.
VZ series camshafts with high lift and stock rockers are an inexpensive way to achieve more lift. More lift expands the power band by increasing bottom end torque. Engle’s VZ cams put a lot more stress and load on the lifter bosses, and valve springs, causing excess wear and tear on the engine and drivetrain. This series of camshafts was originally intended for limited class racing that required stock ratio rockers.

Please Note: EMPI (along with many other engine builders, racers and auto enthusiasts) recommends using an engine oil with ZDDP or ZDTP or a ZDDP/ZDTP additive in your oil for all flat tappet camshaft engines.



California Prop 65 Warning: Cancer and Reproductive Harm
Please Note:The information listed below is for stock, unmodified VW's manufactured for sale in the US. VW's are commonly modified and very often parts from another year VW may have been installed on your car. California Pacific JBugs is not responsible for any errors if your car has been modified in any way.
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1961 - 1974
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1962 - 1973
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1962 - 1973
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1966 - 1973
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