would like advise
#12
used an after market comps cam, 1:9 rockers, 95lb springs
msd blaster coils, and 9mm wires.
now my problem, I turn the car on runs fine for about a minute and then get a yellow service engine soon light, and/or a red low oil light.
Is there any warranty on the work done (engine rebuild?)? If the car didn't run right after the engine rebuild, it should have been fixed then and there.
But I'd start first at removing the aftermarket ignition garbage, then I'd look at your total cam lift, and see if maybe you damaged something by running too much lift. After the SES light comes on after a minute, how does it run?
#13
Wait, what- how big is the aftermarket cam? Just about any decent sized aftermarket cam with 1.9 rockers is going to be too much lift unless the heads have been machined for it. Plus, I'd imagine that spring rate is too low for any decent rpm with that combo, depending what the cam specs are.
If the SES light is coming on- what is the code it is throwing?
But I'd start first at removing the aftermarket ignition garbage, then I'd look at your total cam lift, and see if maybe you damaged something by running too much lift. After the SES light comes on after a minute, how does it run?
If the SES light is coming on- what is the code it is throwing?
But I'd start first at removing the aftermarket ignition garbage, then I'd look at your total cam lift, and see if maybe you damaged something by running too much lift. After the SES light comes on after a minute, how does it run?
Cam Specifications:
■Lift: Intake .507/ Exhaust .507
■Duration @ .50: Intake 210/ Exhaust 216
■Lobe Angle Seperation: 115 Degrees
thanks for the help you got my gears turning now.
#15
Lift: Intake .317/ Exhaust .317
However, with 1.9 rockers, your lift goes from a very safe .507/.507 (with stock rockers) to:
Lift: Intake .602/.602
That's incredibly dangerous for a set of stock 3800 heads. Any lift with rockers that goes above .515 needs to at least have upgraded valve springs and modified retainers. If I were you, I would go back to a stock ignition system (MSD coils are a nightmare to deal with), and also immediately go back to the stock rockers.
By the way, is this a custom cam? I couldn't find that particular cam (spec wise) in the small search that I did. The cam is comparable to the GT1 cam. For a blower setup, I would recommend something bigger such as the XP cam from ZZP.
#16
The lift that you're quoting for your cam is kind of misleading. Whenever a website advertises cams for 3800's and you see a lift over .400, then they are including the lift with the stock ratio rockers. That means that the cam that you have is actually this:
Lift: Intake .317/ Exhaust .317
However, with 1.9 rockers, your lift goes from a very safe .507/.507 (with stock rockers) to:
Lift: Intake .602/.602
That's incredibly dangerous for a set of stock 3800 heads. Any lift with rockers that goes above .515 needs to at least have upgraded valve springs and modified retainers. If I were you, I would go back to a stock ignition system (MSD coils are a nightmare to deal with), and also immediately go back to the stock rockers.
By the way, is this a custom cam? I couldn't find that particular cam (spec wise) in the small search that I did. The cam is comparable to the GT1 cam. For a blower setup, I would recommend something bigger such as the XP cam from ZZP.
Lift: Intake .317/ Exhaust .317
However, with 1.9 rockers, your lift goes from a very safe .507/.507 (with stock rockers) to:
Lift: Intake .602/.602
That's incredibly dangerous for a set of stock 3800 heads. Any lift with rockers that goes above .515 needs to at least have upgraded valve springs and modified retainers. If I were you, I would go back to a stock ignition system (MSD coils are a nightmare to deal with), and also immediately go back to the stock rockers.
By the way, is this a custom cam? I couldn't find that particular cam (spec wise) in the small search that I did. The cam is comparable to the GT1 cam. For a blower setup, I would recommend something bigger such as the XP cam from ZZP.
High Ratio Rocker Arms: 3800 Performance
#18
Forget all of that. Just go to a pick and pull junkyard and pull a set of rockers off of a Series II 3800 and you will be fine. Should only cost you $10-20 (Edit: It could be more then that, but it won't be anywhere near $275).
#19
Seriously, go on clubgp and find some stock rockers- make a thread or something. Tons of people upgrade to aftermarket rockers- and still have their stockers laying around. I'd be shocked if you couldn't get stock rockers for $25.
IMO, stop buying performance parts until you have a car that runs. No sense in continuing to throw money at performance parts when it doesn't even run as good as stock.
That's good advise guys, I dont have the stock rockers I sent them back for core. I called the dealer and they said stock rockers would cost me $430. I looked on 3800 performance they have a 1:70 ratio for $274.99 Is this a doable solution? thanks again guys.