ZeroG
05-23-2007, 04:17 AM
I was finally able to start her up tonight. I replaced the HG among other things over the last 2 months. I took my time as it was my first time doing this, I was also extra careful with everything just to make that I did not damage anything in the process.
So anyway she finally started back up. She was idling clean and everything. A little loppy at first, which is normal for my car being as modified as it is. I did notice one thing, and I just wanted to make sure that it was normal. I was bleeding the radiator system and I notice that there was some oil in the water as it overflowed on to the floor. I figure that this is normal since I just had the head off during which liquid may have gotten all mixed up.
Is this normal? Do I just need to let it run a little bit and then flush the system out?
I am also running high perfomance aftermarket cams. 272 x 10.5 to be a little more exact. Prior to the HG replacement she use to have about 10.5:11 inches of vacume at idle. Now I know what you're thinking that this is low and that there must be a vacume leak somewhere. But I have been told that this kind of a characteristic is normal for a car that has a cam profile like mine. During the HG replacement I wanted to try and reduce overlap so I rolled the cam back (counter clockwise) on the ajustible sprocket as far as possible. Now that car only has 5 or 6 inches of vacume. Which worried me a little bit, as everyone I know sees like 20 inches at idle.
As soon as I get on the throttle it will drop to 15 and then to 20 inches, but without any throttle input I see about 5 inches. Does this sound OK? I do not believe that there is a vacume leak as the car was idle fine and was not hunting at all which is normal for a car with a leak.
Any input would be greatly appreciated.
So anyway she finally started back up. She was idling clean and everything. A little loppy at first, which is normal for my car being as modified as it is. I did notice one thing, and I just wanted to make sure that it was normal. I was bleeding the radiator system and I notice that there was some oil in the water as it overflowed on to the floor. I figure that this is normal since I just had the head off during which liquid may have gotten all mixed up.
Is this normal? Do I just need to let it run a little bit and then flush the system out?
I am also running high perfomance aftermarket cams. 272 x 10.5 to be a little more exact. Prior to the HG replacement she use to have about 10.5:11 inches of vacume at idle. Now I know what you're thinking that this is low and that there must be a vacume leak somewhere. But I have been told that this kind of a characteristic is normal for a car that has a cam profile like mine. During the HG replacement I wanted to try and reduce overlap so I rolled the cam back (counter clockwise) on the ajustible sprocket as far as possible. Now that car only has 5 or 6 inches of vacume. Which worried me a little bit, as everyone I know sees like 20 inches at idle.
As soon as I get on the throttle it will drop to 15 and then to 20 inches, but without any throttle input I see about 5 inches. Does this sound OK? I do not believe that there is a vacume leak as the car was idle fine and was not hunting at all which is normal for a car with a leak.
Any input would be greatly appreciated.