opponheimer
08-09-2007, 05:29 PM
So I got a redtop s13 sr20det and replaced timing chain tensioner. Somehow the chain got misplaced on the crank. I have literally reset the timing chain nine times since then in an attempt to get the chain correct.
Here's how i'm doing it:
Crank set at 2nd mark from the left facing engine.
Exhaust camgear mark in between 12 o'clock and 1'clock with about 8 pins from head. ZERO slack between exhaust camgear and crank.
Intake cam placed as so there is a 20-pin count between both notches on both cam gears.
Then I set CAS to 2nd dot and slide it in so it aligns with first dot to put the motor at 15deg
Put in tensioner, release it, rotate 2 times CCW. Done
Now when I run the car, it shows an advancement of 10degrees past the fucking 15deg mark, and when I rev it, it backfires at the exhaust manifold.
I've called HT and Enjuku and have followed they're procedures exactly. Every time i follow their instructions timing stays advanced. When I try adjusting the CAS one extra tooth either way the car barely runs.
I can't figure this damned thing out and I'm curious if there is something tricky with my motor.
I have three questions:
1) Is there supposed to be zero slack between exhaust cam and crank and is the 2nd mark from the left TDC?
2) Is there any sensor that could have gone bad to have caused this advancement in timing? (i've tried another CAS)
3) Is there anyone experienced in the VA area that would be willing to help me?
Please help. I'm stumped and carless atm.
TY
Here's how i'm doing it:
Crank set at 2nd mark from the left facing engine.
Exhaust camgear mark in between 12 o'clock and 1'clock with about 8 pins from head. ZERO slack between exhaust camgear and crank.
Intake cam placed as so there is a 20-pin count between both notches on both cam gears.
Then I set CAS to 2nd dot and slide it in so it aligns with first dot to put the motor at 15deg
Put in tensioner, release it, rotate 2 times CCW. Done
Now when I run the car, it shows an advancement of 10degrees past the fucking 15deg mark, and when I rev it, it backfires at the exhaust manifold.
I've called HT and Enjuku and have followed they're procedures exactly. Every time i follow their instructions timing stays advanced. When I try adjusting the CAS one extra tooth either way the car barely runs.
I can't figure this damned thing out and I'm curious if there is something tricky with my motor.
I have three questions:
1) Is there supposed to be zero slack between exhaust cam and crank and is the 2nd mark from the left TDC?
2) Is there any sensor that could have gone bad to have caused this advancement in timing? (i've tried another CAS)
3) Is there anyone experienced in the VA area that would be willing to help me?
Please help. I'm stumped and carless atm.
TY