jpsandberg
Registered User
Hey everyone!
(this is a 2 parter)
I am considering rebuilding my heads. Here is why:
Almost every time I start my car after it has sat for 10 minutes or more, it blows out a puff of blueish-white smoke (for about 1-2 seconds) I used to have this problem only if it sat for a longer period of time (8 hours or more), but it has progrssively gotten worse to the state it's at now. I also use/replace 2 quarts of oil between oil changes. I do not notice any smoke when driving, just at start-up (and very rare occasions if I rev to high RPM's while it's in park)
From earlier posts hear, I was told this could be from leaky valve guides? Is it possible its also Rings? (I am betting on the valves).
I was also told that leaky valve guides could let oil leak down and pool in the cylinders while it's sitting, and that's what is burning off when I cold start it.... Sound right?
I had the motor rebuilt about 40k ago (top and bottom) ever since that time it used almost a quart of oil between changes. (at that time, I was told by the mech. it's supposed to do that with these cars, even after total rebuild and believed that to be true..)
Now my questions are:
1. Is what's happening a resault of bad valve guides, Rings, or both? Also, how is a good way to tell before ripping it apart (if possible)?
and MAINLY
2. If it's the valve guides (well same with rings I guess), and I am going to have to pull the heads, what are some less-expensive work I can have done to the heads while they are off to give more performance? (I have fresh-air intake, 75 C&L MAF, and SCP exhaust w/high flow cats, res, etc)
I am curious: Porting? How much? anything else while I am at it? Price guesses? Head studs (what are they also?)
I am thinking the rings should be OK since the motor "only" has 40k on it since rebuild..
Thanks for you time, and look forward to replies!
Jonathan
(this is a 2 parter)
I am considering rebuilding my heads. Here is why:
Almost every time I start my car after it has sat for 10 minutes or more, it blows out a puff of blueish-white smoke (for about 1-2 seconds) I used to have this problem only if it sat for a longer period of time (8 hours or more), but it has progrssively gotten worse to the state it's at now. I also use/replace 2 quarts of oil between oil changes. I do not notice any smoke when driving, just at start-up (and very rare occasions if I rev to high RPM's while it's in park)
From earlier posts hear, I was told this could be from leaky valve guides? Is it possible its also Rings? (I am betting on the valves).
I was also told that leaky valve guides could let oil leak down and pool in the cylinders while it's sitting, and that's what is burning off when I cold start it.... Sound right?
I had the motor rebuilt about 40k ago (top and bottom) ever since that time it used almost a quart of oil between changes. (at that time, I was told by the mech. it's supposed to do that with these cars, even after total rebuild and believed that to be true..)
Now my questions are:
1. Is what's happening a resault of bad valve guides, Rings, or both? Also, how is a good way to tell before ripping it apart (if possible)?
and MAINLY
2. If it's the valve guides (well same with rings I guess), and I am going to have to pull the heads, what are some less-expensive work I can have done to the heads while they are off to give more performance? (I have fresh-air intake, 75 C&L MAF, and SCP exhaust w/high flow cats, res, etc)
I am curious: Porting? How much? anything else while I am at it? Price guesses? Head studs (what are they also?)
I am thinking the rings should be OK since the motor "only" has 40k on it since rebuild..
Thanks for you time, and look forward to replies!
Jonathan