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Jun Cams

Development in a Perfect Design Environment:
The cam profile, which influences the performance of a camshaft, is the most important element in a camshaft design. JUN uses advanced software created solely for finding optimum cam profiles. JUN engineers then test the computer-designed camshafts on their engine bench system, through the use of JUN's advanced combustion pressure measurement equipment. The engineers then analyze the state in the combustion chamber for every crankshaft angle, before repeating the testing process again with the different cam profiles that will be used on that engine.

Camshaft Profile is Optimized According to the Car
Not all aftermarket camshafts are the same! JUN changes the shape of their cam profiles based on the application, giving consideration to differences of valve motion (direct type, a locker arm type, strength of moving part, valve size, port and combustion room form etc). For example, the optimum computer-designed profile might be restricted by a wall in a head, the lifter hole size, the locker arm form, etc. Put simply, JUN camshafts are the best high-performance cams you can buy for your engine. With many hours of R&D put into each camshaft, you can rest assured that JUN cams will fit and function properly.

Superior Equipment and Quality Control: In order to manufacture a highly precise camshaft, it can be said that the cam grinder is indispensable. JUN has used a precision CNC grinder from their early stages. This advanced piece of machinery can input the program data from their cam profile software and then accurately produce a quality camshaft based on that design. No camshaft leaves JUN's processing plant without undergoing their rigorous quality control testing and inspection. The result is a camshaft of unparalleled quality.

The Main Goal of JUN's Camshaft Development and Design:
JUN engineers concentrate on ways to increase the "filling efficiency" of each engine in order to obtain the best output. Part of this equation is how long the cam forces a valve to be open (duration). You cannot simply just increase how much the valve opens (lift) because the acceleration of the valve will become too large and it could loose contact with the cam. This jumping phenomenon will not only hurt the engine's output, but it can also cause engine failure. To avoid the "jumping phenomenon," it is necessary to increase the duration along with the lift. Engineers must make compromises in each high-lift camshaft to find the best design with regard to duration and valve slap.
JUN engineers brilliantly created a profile that used a large positive acceleration, but lengthened the amount of duration as the valve is closing to lower the negative acceleration -- keeping the valve in contact with the rest of the valve train while still having the valve open as much as possible for as long as possible. Design details like these, separate JUN from the competition.

LHA-Lash type
SHIM- Solid type

All Acura Jun Cams
View All Acura Integra Cams
Acura IntegraPrice
(1994-2001) B16/18 Type 3 Exhaust$1,027.82  Add to Cart
B16/18 Type 3 Intake$1,027.82  Add to Cart
All Honda Jun Cams
View All Honda Civic Cams
Honda CivicPrice
(1999-2000) B16/18, Type 3 (Exhaust)$1,027.82  Add to Cart
B16/18, Type 3 (Intake)$1,027.82  Add to Cart
B16/B18, Type 1 (Exhaust)$1,027.82  Add to Cart
B16/B18, Type 1 (Intake)$1,027.82  Add to Cart
B16/B18, Type 2 (Exhaust)$1,027.82  Add to Cart
B16/B18, Type 2 (Intake$1,027.82  Add to Cart
B16/B18, Type Zero (Exhaust)$1,027.82  Add to Cart
B16/B18, Type Zero (Intake)$1,027.82  Add to Cart
View All Honda Prelude Cams
Honda PreludePrice
(1992-2001) 60(240)-7.7 PRI, 74 296V12.2 MID, 62(248)-9.2 2nd, Intake$1,113.48  Add to Cart
63(252)-9.0 PRI, 74(296)-11.9 MID, 61(244)-7.7 EX 2nd$1,113.48  Add to Cart
All Mitsubishi Jun Cams
View All Mitsubishi EVO Cams
Mitsubishi EVOPrice
(1992-1996) 66(264)- 10.5 EX (EVO. 1-3) LHA$749.46  Add to Cart
66(264)- 10.5 EX (EVO. 1-3) Shim$813.69  Add to Cart
66(264)- 10.5 IN (EVO. 1-3) LHA$749.46  Add to Cart
66(264)- 10.5 IN (EVO. 1-3) Shim$813.69  Add to Cart
68(272)- 10.8 EX (EVO. 1-3) LHA$749.46  Add to Cart
68(272)- 10.8 EX (EVO. 1-3) Shim$813.69  Add to Cart
68(272)- 10.8 IN (EVO. 1-3) Shim$813.69  Add to Cart
(1996-1999) 66(264)- 10.5 EX (EVO. 4-6) LHA$749.46  Add to Cart
66(264)- 10.5 EX (EVO. 4-6) Shim$813.69  Add to Cart
(1996-2000) 66(264)- 10.5 IN (EVO. 4-8) LHA$749.46  Add to Cart
(1996-2005) 66(264)- 10.5 IN (EVO. 4-8) Shim$813.69  Add to Cart
(1996-1999) 68(272)- 10.8 EX (EVO. 4-6) LHA$749.46  Add to Cart
68(272)- 10.8 EX (EVO. 4-6) Shim$813.69  Add to Cart
(1996-2000) 68(272)- 10.8 IN (EVO. 4-6) LHA$749.46  Add to Cart
(1996-2005) 68(272)- 10.8 IN (EVO. 4-8) Shim$813.69  Add to Cart
(2001-2006) 66(264)- 10.5 EX (EVO. 7-9) LHA$749.46  Add to Cart
66(264)- 10.5 EX (EVO. 7-9) Shim$813.69  Add to Cart
68(272)- 10.8 EX (EVO. 7-9) LHA$749.46  Add to Cart
68(272)- 10.8 EX (EVO. 7-9) Shim$813.69  Add to Cart
(2006) 66(264)- 10.5 IN (EVO. 9) Shim$813.69  Add to Cart
68(272)- 10.8 IN (EVO. 9) Shim$813.69  Add to Cart
All Nissan Jun Cams
View All Nissan Skyline Cams
Nissan SkylinePrice
(1989-1998) GTR RB26DETT - Exhaust (288) 11.8 lift$503.87  Add to Cart
GTR RB26DETT - Intake (288) 11.8 lift$503.87  Add to Cart
All Toyota Jun Cams
View All Toyota Supra Cams
Toyota SupraPrice
(1986-1992) (1JZ-GTE) Exhaust 64 (256) Angle 9.3 Lift$985.00  Add to Cart
(1JZ-GTE) Exhaust 66 (264) Angle 9.3 Lift$985.00  Add to Cart
(1JZ-GTE) Exhaust 68 (272) Angle 9.3 Lift$985.00  Add to Cart
(1JZ-GTE) Intake 64 (256) Angle 9.3 Lift$985.00  Add to Cart
(1JZ-GTE) Intake 66 (264) Angle 9.3 Lift$985.00  Add to Cart
(1JZ-GTE) Intake 68 (272) Angle 9.3 Lift$985.00  Add to Cart
(1993-1998) Exhaust 64 (256) Angle 9.3 Lift$985.00  Add to Cart
Exhaust 64 (264) Angle 9.3 Lift$985.00  Add to Cart
Exhaust 68 (272) Angle 10.8 Lift (Requires custom valvetrain)$985.00  Add to Cart
Exhaust 68 (272) Angle 9.3 Lift$985.00  Add to Cart
Intake 64 (256) Angle 9.3 Lift$985.00  Add to Cart
Intake 64 (264) Angle 9.3 Lift$985.00  Add to Cart
Intake 68 (272) Angle 10.8 Lift (Requires custom valvetrain)$985.00  Add to Cart
Intake 68 (272) Angle 9.3 Lift$985.00  Add to Cart
 
Jun Cam Reviews
  (10 of 10) 1 Review    Write Review
RatingDateModelReview
1005/15/2008PreludeJust plain SICK!!! 8200rpm redline with stock bottom end H22...It peaks at 6800 or so and carries FOREVER!!!

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Parts Available: 1004M-H103, 1004M-H003, 1004M-H103, 1004M-H003, 1004M-H101, 1004M-H001, 1004M-H102, 1004M-H002, 1004M-H105, 1004M-H005, 1004M-H011, 1004M-H111, 1004M-M101, 1004M-M151, 1004M-M001, 1004M-M051, 1004M-M102, 1004M-M152, 1004M-M052, 1004M-M111, 1004M-M161, 1004M-M011, 1004M-M061, 1004M-M112, 1004M-M162, 1004M-M012, 1004M-M062, 1004M-M141, 1004M-M171, 1004M-M142, 1004M-M172, 1004M-M071, 1004M-M072, 1004M-N343, 1004M-N243, 1004M-T121, 1004M-T122, 1004M-T123, 1004M-T021, 1004M-T022, 1004M-T023, 1004M-T111, 1004M-T112, 1004M-T114, 1004M-T113, 1004M-T011, 1004M-T012, 1004M-T014, 1004M-T013