Ported heads: If swirl "bump" is removed, are heads ruined??
02-23-2003, 10:38 AM
#22
Re: Ported heads: If swirl "bump" is removed, are heads ruined?? If the car is that low on power, than it's more than likely something pretty simple. 330 rwhp is just plain rediculous for a heads/cam car, something is definately wrong and I don't think it's the parts....
Check and make sure he doesn't have anything touching his MAF sensor prongs. I have seen this happen before and drastically effect power. Check plugs, try replacing 02's.
If nothing that simple will fix the problem, the only sure fire way to make sure you did everything right is to pull the motor back apart, and reinstall everything step by step. You guys could have accidently slid the cam in 180* out, possibly a head gasket isn't sealing properly? Way to many variables for guess work, if the simple stuff doesn't fix it then you'd better get back in the garage and redo it..
Josh
Check and make sure he doesn't have anything touching his MAF sensor prongs. I have seen this happen before and drastically effect power. Check plugs, try replacing 02's.
If nothing that simple will fix the problem, the only sure fire way to make sure you did everything right is to pull the motor back apart, and reinstall everything step by step. You guys could have accidently slid the cam in 180* out, possibly a head gasket isn't sealing properly? Way to many variables for guess work, if the simple stuff doesn't fix it then you'd better get back in the garage and redo it..
Josh
02-23-2003, 10:47 AM
#23
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Re: Ported heads: If swirl "bump" is removed, are heads ruined?? Does this car have cats? If so, I've seen a bad catalytic converter cause this type of power drop.
Also, as stated before, a leakdown and cranking copression check are mandatory in diagnosing this type of problem.
Shane
Also, as stated before, a leakdown and cranking copression check are mandatory in diagnosing this type of problem.
Shane
02-23-2003, 04:48 PM
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Re: Ported heads: If swirl "bump" is removed, are heads ruined?? AutoTap the car and run a log of Mass Airflow Rate, Engine RPM, and Spark Timing during a full throttle run. Also, I would check the O2's (should be about 880-920 mv) with engine RPM at full throttle. I believe 38 Lb-min is about 400 RWHP for a 6-speed car. If the MAF rate falls off in upper RPM ranges it could be a sign of valve float, or poorly matched components. Hope this helps,
Paul J.
Paul J.
02-23-2003, 09:55 PM
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Re: Ported heads: If swirl "bump" is removed, are heads ruined?? I know a guy that had similar problems to this, but he was running a well known companies stage II heads/cam. He ended up getting frustrated, parting it out, and selling the car before he ever figured it out. I'm curious to see what you guys come up with.
Something else, I think one of the problems with his car was his coil packs weren't working quite right.
Something else, I think one of the problems with his car was his coil packs weren't working quite right.
08-13-2014, 12:29 PM
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Sucks when we dont ever get to hear the conclusion to the problem. Its like reading a book and then finding out the last few pages were ripped out.
11 years later. I wonder if thats even possible to be updated now. lol
11 years later. I wonder if thats even possible to be updated now. lol
08-14-2014, 11:13 AM
#31
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We may never know but in his post he never tuned the car and put it on the dyno and expected those #'s. I am going with the tune. I also hate when people never tell you the outcome of there problems.
09-08-2014, 11:56 AM
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Who? Me?
No. I was sent this link by another person that is reseraching. He asked me to view it. After reading it, I saw that it had no conclusion. It would be a much more helpful thread if the conclusion was posted.
It was kinda like watching a movie and not getting to see the end.
No. I was sent this link by another person that is reseraching. He asked me to view it. After reading it, I saw that it had no conclusion. It would be a much more helpful thread if the conclusion was posted.
It was kinda like watching a movie and not getting to see the end.
09-09-2014, 08:05 PM
#36
It is interesting to see this thread revived.
I've used AGearHead4Life's head porting video to remove the swirl ramp, & bump. I also have the TR224, but with 806 heads.
Having just come in from a nightly run, I can tell you that the difference before and after porting, is like night and day.
Both versions of the heads were run with the original mail-order tune.
I have no dyno verification.
...and they lived, happily ever-after!
I've used AGearHead4Life's head porting video to remove the swirl ramp, & bump. I also have the TR224, but with 806 heads.
Having just come in from a nightly run, I can tell you that the difference before and after porting, is like night and day.
Both versions of the heads were run with the original mail-order tune.
I have no dyno verification.
...and they lived, happily ever-after!
09-09-2014, 08:12 PM
#37
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It is interesting to see this thread revived.
I've used AGearHead4Life's head porting video to remove the swirl ramp, & bump. I also have the TR224, but with 806 heads.
Having just come in from a nightly run, I can tell you that the difference before and after porting, is like night and day.
Both versions of the heads were run with the original mail-order tune.
I have no dyno verification.
...and they lived, happily ever-after!
I've used AGearHead4Life's head porting video to remove the swirl ramp, & bump. I also have the TR224, but with 806 heads.
Having just come in from a nightly run, I can tell you that the difference before and after porting, is like night and day.
Both versions of the heads were run with the original mail-order tune.
I have no dyno verification.
...and they lived, happily ever-after!
