NEED HELP TIMING
11-17-2001, 07:03 PM
#1
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NEED HELP TIMING
i need help timing my motor, i disconected the est wire, but cant seem to bring my timing mark to line up with 6*btdc, it stalls, what should i do, these are the specs on my cam
Part Number: 104211
Grind Number: POWERMAX 2020 (FORMERLY COMPUCAM 2020)
Engine Ident: 1987-1989 CHEVROLET V-8 305 CU.IN.
VALVE SETTING: INTAKE .000 EXHAUST .000 ----> HOT
LIFT: INTAKE @CAM 271 @VALVE 407 ROCKER ARM RATIO
EXHAUST @CAM 286 @VALVE 429 1.50
ALL LIFTS ARE BASED ON ZERO LASH AND THEORETICAL ROCKER ARM RATIOS
CAM TIMING OPENS CLOSES ADV DURATION
@ --- INTAKE --- --- 256 °
-- LIFT EXHAUST --- --- 266 °
SPRING REQUIREMENTS
TRIPLE DUAL OUTER INNER
PART NUMBER 99848
LOADS:
CLOSED 105 LBS @ 1.700 OR 1 45/64
OPEN 258 LBS @ 1.300
RECOMMENDED RPM
RANGE WITH MATCHING COMPONENTS
MINIMUM RPM ----
MAXIMUM RPM ----
VALVE FLOAT 6500
CAM TIMING OPENS CLOSES MAX LIFT DURATION
@ .050 INTAKE (14) ATDC 28 ABDC 111 °ATDC 194 °
TAPPET LIFT EXHAUST 33 BBDC (9) BTDC 111 °BTDC 204 °
------------------
90 RS 305 tbi, 4 3/4" cowl Hood, Edelbrock TES headers, Flowmaster exhaust, Crane roller cam, comp roller rockers, vortec heads/intake, ported tbi, w/new injectors, MSD probillet Distributer/ coil, 1 inch tbi spacer, air foil, 14x4 k&n flat base air cleaner, Rebuilt 700r4 w/ B&M shift kit, B&M Megashifter, 3.23 posi, 2 12 RF's with mtx amp, top of line alpine cd player, soon to have 90-91 gfx, z-28 wing, new paintjob, rims, and all new lowered suspension.
Part Number: 104211
Grind Number: POWERMAX 2020 (FORMERLY COMPUCAM 2020)
Engine Ident: 1987-1989 CHEVROLET V-8 305 CU.IN.
VALVE SETTING: INTAKE .000 EXHAUST .000 ----> HOT
LIFT: INTAKE @CAM 271 @VALVE 407 ROCKER ARM RATIO
EXHAUST @CAM 286 @VALVE 429 1.50
ALL LIFTS ARE BASED ON ZERO LASH AND THEORETICAL ROCKER ARM RATIOS
CAM TIMING OPENS CLOSES ADV DURATION
@ --- INTAKE --- --- 256 °
-- LIFT EXHAUST --- --- 266 °
SPRING REQUIREMENTS
TRIPLE DUAL OUTER INNER
PART NUMBER 99848
LOADS:
CLOSED 105 LBS @ 1.700 OR 1 45/64
OPEN 258 LBS @ 1.300
RECOMMENDED RPM
RANGE WITH MATCHING COMPONENTS
MINIMUM RPM ----
MAXIMUM RPM ----
VALVE FLOAT 6500
CAM TIMING OPENS CLOSES MAX LIFT DURATION
@ .050 INTAKE (14) ATDC 28 ABDC 111 °ATDC 194 °
TAPPET LIFT EXHAUST 33 BBDC (9) BTDC 111 °BTDC 204 °
------------------
90 RS 305 tbi, 4 3/4" cowl Hood, Edelbrock TES headers, Flowmaster exhaust, Crane roller cam, comp roller rockers, vortec heads/intake, ported tbi, w/new injectors, MSD probillet Distributer/ coil, 1 inch tbi spacer, air foil, 14x4 k&n flat base air cleaner, Rebuilt 700r4 w/ B&M shift kit, B&M Megashifter, 3.23 posi, 2 12 RF's with mtx amp, top of line alpine cd player, soon to have 90-91 gfx, z-28 wing, new paintjob, rims, and all new lowered suspension.
11-17-2001, 10:51 PM
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did you happen to misalign your timing marks on the timing chain, or happen to put your distributor in wrong possibly 180 out, this seems to be most of your problem, make sure that all those are correct if not sure, run over it again, i just replaced my timing chain, and had the same problem, till i aligned the marks on the timing chain, then rotated my motor to top dead center on the #1 clyinder, and made sure my rotor piont was pionting to the #1 plug terminal on the distributor ,and she's runnning perfect now hopefully this helps some unles you have tried what i suggested already?
11-18-2001, 09:21 AM
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i lined them up right, and the cam said not to degree it at all, both things you suggested would cause it to not start, thanks for the reply, i guess its by ear untill i figure it out
------------------
90 RS 305 tbi, 4 3/4" cowl Hood, Edelbrock TES headers, Flowmaster exhaust, Crane roller cam, comp roller rockers, vortec heads/intake, ported tbi, w/new injectors, MSD probillet Distributer/ coil, 1 inch tbi spacer, air foil, 14x4 k&n flat base air cleaner, Rebuilt 700r4 w/ B&M shift kit, B&M Megashifter, 3.23 posi, 2 12 RF's with mtx amp, top of line alpine cd player, soon to have 90-91 gfx, z-28 wing, new paintjob, rims, and all new lowered suspension.
------------------
90 RS 305 tbi, 4 3/4" cowl Hood, Edelbrock TES headers, Flowmaster exhaust, Crane roller cam, comp roller rockers, vortec heads/intake, ported tbi, w/new injectors, MSD probillet Distributer/ coil, 1 inch tbi spacer, air foil, 14x4 k&n flat base air cleaner, Rebuilt 700r4 w/ B&M shift kit, B&M Megashifter, 3.23 posi, 2 12 RF's with mtx amp, top of line alpine cd player, soon to have 90-91 gfx, z-28 wing, new paintjob, rims, and all new lowered suspension.
11-18-2001, 12:50 PM
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oh she'll start 180* off... I know this... Did the same damn thing on the 87. It'll run like ****, but it'll run. I got it a tooth of the 2nd time.. and the 3rd time I finally got it right.
Anthony
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previous ride: 87 Camaro LT
350, A4.Comp Cams 268H, Edelbrock Preformer intake, Hedman Headers and y-pipe, gutted cat, No AIR/smog pump. 14x3" Open element K&N, Q-jet w/ D hanger and DA rods, adjusted AV spring tension and quick can.
Current ride: 1992 Camaro RS, K&N, Flowmaster, 305, T5, Black, T-tops, 84k miles.
Anthony
------------------
previous ride: 87 Camaro LT
350, A4.Comp Cams 268H, Edelbrock Preformer intake, Hedman Headers and y-pipe, gutted cat, No AIR/smog pump. 14x3" Open element K&N, Q-jet w/ D hanger and DA rods, adjusted AV spring tension and quick can.
Current ride: 1992 Camaro RS, K&N, Flowmaster, 305, T5, Black, T-tops, 84k miles.
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