4A-GE 16V Camshaft Comparisons:
Duration
Lift
Intake opening
Exhaust opening
Comments
232°
7.1mm
8°BTDC
47°BBDC
Stock 4AG(Z)EU used on 90~91 Hi-comp. AE92 and supercharged AW11. P/N Intake 13501-16030. Ex. 13502-16020, Good turbo cam. Keeps exhaust pressures high without blowing back though intake manifold.
240°
7.56mm
9°BTDC
(Stock -max lift @ 111°)
51°BBDC
(Stock -max lift @ 111°)
Stock 4AGEU used on AE86 and AW11. P/N Intake 13501-16010. Ex. 13502-16010. Some have found good power setting the maximum lobe lift for the exhaust at 100°BTDC and intake at 100°ATDC. For more bottom end power retard the exhaust 4° and advance the intake 3°. For more top end, advance intake 4°and exhaust 3° from stock settings.
244°
.322”
(8.2mm)
Web – p/n 45-082, Grind number 294; Duration @ .050” lift is 218°. Increases overall power. Ground on new billet cams. Works with factory injection or carburetors.
248°
7.45mm
HKS - p/n 2202-RT030, Can be used on 4AGZE
250°
.350”
(8.9mm)
Web – p/n 45-092, Grind number 101; Duration @ .050” lift is 228°. Increases mid and upper RPM power. Ground on new billet cams. May cause fair idle on fuel injected engines.
256°
7.6mm
TRD - no longer available. Good bottom-end power and plenty of mid-range for passing.
256°
7.9mm
Toda - p/n 02.TD.CS4AG0S1
256°
8.35mm
HKS - p/n 2202-RT031, Can be used on 4AGZE
256°
8.5mm
Toda - p/n 02.TD.CS4AGBF2, Recommended to use Toda’s valve train kit, i.e., under bucket shims
256°
9.0mm
Toda - p/n 02.TD.CS4AGCJ1, Recommended to use Toda’s valve train kit, i.e., under bucket shims
257°
.398”
(10.1mm)
Web – p/n 45-131 (Hard-weld), Grind number 286; Duration @ .050” lift is 226°. Designed for off-road and stadium racing. Requires under bucket shims.
264°
7.6mm
26°BTDC
68°BBDC
TRD - no longer available. Increased performance, needs headers, more performance with higher compression. Mfg. recommends setting the cam at max lift for the intake at 106° ATDC and exhaust at 116°BTDC.
264°
7.9mm
Toda - p/n 02.TD.CS4AGCJ2
264°
8.35mm
HKS - p/n 2202-RT032, Can be used on 4AGZE
264°
8.7mm
Toda - p/n 02.TD.CS4AGCJ3, Recommended to use Toda’s valve train kit, i.e., under bucket shims
264°
8.9mm
Toda - p/n 02.TD.CS4AGAI1, Recommended to use Toda’s valve train kit, i.e., under bucket shims
272°
7.5mm
TRD - p/n intake, 13501-AE871, ex. 13502-AE871. Increased performance, needs headers, more performance with higher compression, approaching limits of stock EFI, works best with side drafts. Ex. max lift set at 98° BTDC. In. max lift set at 100° ATDC. Will work with new (suggested) factor valve springs.
272°
7.8mm
Toda - p/n 02.TD.CS4AG0C2
272°
7.9mm
Toda - p/n 02.TD.CS4AG0A2
272°
8.35mm
HKS - p/n 2202-RT033, Using both intake and exhaust on a stock Supercharged 4AGEZ has less bottom end below 3,000, strong mid to high end power.
272°
8.5mm
Toda - p/n 02.TD.CS4AG0P1, Recommended to use Toda’s valve train kit, i.e., under bucket shims
272°
8.7mm
Toda - p/n 02.TD.CS4AG0B2, Recommended to use Toda’s valve train kit, i.e., under bucket shims
272°
8.9mm
Toda - p/n 02.TD.CS4AGAI2, Recommended to use Toda’s valve train kit, i.e., under bucket shims
272°
9.9mm
Toda - p/n 02.TD.CS4AG0P4, Must use Toda’s valve train kit, i.e., under bucket shims
272°
10mm
TRD - p/n ex. 13502-AE831. N2 and Rally cam has good bottom-end torque and strong mid-range, revs to 7,500 RPM. (requires race engine prep. and mod.s) Ex. max lift set at 100° BTDC
272°
10.3mm
Toda - p/n 02.TD.CS4AGCJ4, Must use Toda’s valve train kit, i.e., under bucket shims
276°
.384”
(9.8mm)
Web – p/n 45-021 (Hard-weld), Grind number 119; Duration @ .050” lift is 240°. Good overall power for off-road racing. Requires under bucket shims.
280°
10.3mm
Toda - p/n 02.TD.CS4AG0J4, Must use Toda’s valve train kit, i.e., under bucket shims
284°
.395”
(10mm)
Web – p/n 45-071 (Hard-weld), Grind number 110; Duration @ .050” lift is 256°. Strong mid and upper end power for off-road racing and pro-rally. Requires under bucket shims.
288°
7.5mm
57°BBDC
TRD - p/n intake, 13501-AE861, ex. 13502-AE861. Very strong power increase from 4,000 to 7,000 +RPM, less bottom end (does not idle very well). Used as an exhaust cam with 304° intake in TRD rally car (max lift @ 98° BTDC). Will work with new (suggested) factor valve springs.
288°
7.8mm
Toda - p/n 02.TD.CS4AG0C3
288°
8.3mm
HKS - p/n 2202-RT034, Can be used on 4AGZE
288°
8.5mm
Toda - p/n 02.TD.CS4AG0P2
288°
8.7mm
Toda - p/n 02.TD.CS4AG0B3, Recommended to use Toda’s valve train kit, i.e., under bucket shims
288°
10.0mm
Toda - p/n 02.TD.CS4AG0I1, Must use Toda’s valve train kit, i.e., under bucket shims
288°
10.0mm
TRD - p/n ex. 13502-AE821. Rally cam has less bottom-end torque more HP on top, revs to 8,000 RPM. (requires race engine prep. and mod.s) Max lift set at 100° BTDC
288°
10.35mm
HKS - p/n 2202-RT035, Can be used on 4AGZE
296°
11.0mm
TRD - p/n ex. 13502-AE951. Used on the late model AE92 Hi-comp. Head with slightly different porting configuration. Intake max. lift set at 102° BTDC.
300°
10mm
62°BTDC
76°BBDC
TRD - p/n ex. 13502-AE811. Japanese N2 racing cam. has less bottom-end torque more HP on top, revs to 8,000 ~ 10,000 RPM. (requires race engine prep. and other mod.s). Max lift set at 102° BTDC, exhaust and 98° ATDC, intake.
304°
7.5mm
52°BTDC
65°BBDC
TRD - p/n intake 13501-AE851, ex. 13502-AE851. Japanese Group A racing cam, very strong power increase from 4,500 to 7000 RPMs. (requires race engine prep. and mod.s) Max lift set at 100° BTDC, exhaust and 100° ATDC, intake. Will work with new (suggested) factor valve springs.
304°
7.8mm
Toda - p/n 02.TD.CS4AG0C4
304°
8.3mm
HKS - p/n 2202-RT036, Can be used on 4AGZE
304°
8.5mm
Toda - p/n 02.TD.CS4AG0P3
304°
8.7mm
Toda - p/n 02.TD.CS4AG0B4, Recommended to use Toda’s valve train kit, i.e., under bucket shims
304°
10mm
62°BTDC
76°BBDC
TRD - p/n intake 13501-AE801, ex. 13502-AE801. Japanese N2 & Formula Atlantic racing cam. has less bottom-end torque more HP on top, revs to 8,000 ~ 10,000 RPM. (requires race engine prep. and other mod.s). Max lift set at 102° BTDC, exhaust and 98° ATDC, intake.
304°
10.35mm
HKS - p/n 2202-RT037, Can be used on 4AGZE
304°
10.5mm
Toda - p/n 02.TD.CS4AG0C1, Must use Toda’s valve train kit, i.e., under bucket shims
304°
10.7mm
TRD - p/n exhaust 13502-AE881
304°
11.0mm
TRD - p/n intake 13501-AE951, ex. 13502-AE901. Used on the late model AE92 Hi-comp. Head with slightly different porting configuration. Intake max. lift set at 102° ATDC.
310°
10.5mm
Toda - p/n 02.TD.CS4AG0T1, Must use Toda’s valve train kit, i.e., under bucket shims
312°
11.0mm
TRD - p/n intake 13501-AE901. Used on the late model AE92 Hi-comp. Head with slightly different porting configuration. Intake max. lift set at 102° ATDC.
320°
10.0mm
TRD - p/n intake 13501-AE811
320°
10.8mm
Toda - p/n 02.TD.CS4AG0A4, Must use Toda’s valve train kit, i.e., under bucket shims
320°
11.0mm
TRD - p/n intake 13501-AE881
4A-GE 20 valve Camshaft Comparisons:
Duration
Lift
Intake opening
Exhaust opening
Comments
256°
8.5mm
Toda - VVT intake. AE101 4AG 20valve
264°
8.7mm
Toda - VVT intake. AE101 4AG 20valve
256°
8.5mm
Toda -exhaust. AE101 4AG 20valve
* Note Toda has 20 different profiles for the 4AG 20 valve.
304°
10.8mm
(Fr, Rr)
10.2mm
(Ctr)
TRD - p/n Intake 13501-AE001, AE101 4AG 20valve
304°
10.8mm
TRD - p/n Ex. 13502-AE001, AE101 4AG 20valve
Listing of part numbers illustrate factory differences. Part numbers may vary depending on original country of sale and are subject to change without notice and may no longer be available. Check with your supplier.
Crank angle reference with #1 piston; BTDC = Before Top Dead Center, ATDC = After Top Dead Center, BBDC = Before Bottom Dead Center
Duration, lift and opening and closing angles are approximate. Different manufactures measure and report cam shaft profiles differently and are sometimes over stated and optimistic. Spec. comparisons could be misleading and better suited for comparison between the products within one manufacture.
Requires race engine prep. and mod.s refers to ports enlarged & polished, 32mm intake valves & 27.5mm exhaust valves, under bucket shims, machined spring seats for greater installed height, at least 12: 1 compression and small combustion chamber.
Note each tooth of the camshaft sprocket equals 20° of crankshaft rotation. (36 teeth on cam, 18 teeth on crank)
HKS Cams are ground to exact specifications from new billets of high nickel iron alloy that equal or exceed the OEM units.
Toda is the oldest supplier of 4AG racing cams in Japan and currently uses Toyota factory blanks as a basis for their billets.
TRD camshafts are precision-ground from new billet stock.
Web-Cams camshafts are precision ground onto new cast alloy stock, double heated for long life with some profiles having a welded hard-face overlay (Hard-welded) for increased durability on their higher lift models.
Toyota shock shims are available from 2.5 ~ 3.3mm thickness.
Typical profile of a camshaft with its features defined.
References:
TRD - Corolla, Levin, Sprinter, Trueno special Edition Bible, TRD Toyota Racing Development Japan, published 1996.
Toysport, Joji Luz, Gardena California
Club 4 AG Technical Bulletin Board respondents, Bill S. and Psycho
AKH Trading U.S.A., TODA Racing, Irvine California
High Performance Honda Builder’s Handbook, by Joe Pettitt, 1996, Cartech publications, Brooklands Books LTD.
Web Cams catalog and article titled In search of the “perfect” Camshaft, Cam-Tech. by Bruce Simurda, with assistance from Web-Cam, Riverside California