blower head experts within.
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From: Chi-Town
Re: blower head experts within. i dont think so dirty.....but you are on the right track. Sometimes valvesprings can be too WEAK and they cant stay closed against the pressure and you'll lose power that way. That is why on many boost motors you need more spring that you normally would n/a for the same type of horsepower. I only have a .515 lift hydraulic FLAT TAPPET cam and i need doulbe springs to keep them closed against the airflow
Re: blower head experts within. Compression / Power is not linear. The more you reduce the compression, the more power will be lost. The first point may be 3%, the second 5%, the third 9%, the fourth 17%, etc..... you get the picture.
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From: the not so stock tribe
Re: blower head experts within. jimmykash i hear what you're saying, but how about the lifter itself? can the increased pressure from the double springs and the 1.8 rockers cause the lifter to colapse, thus loosing lift and duration?
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From: the not so stock tribe
Re: blower head experts within. well the lifter collapsing theory is out , we just dynoed today after swapping the 987's back to 918's and using 20w-50 oil. almost the same graph.
i'm almost out of ideas,i can't explain it.
i guess the only solution is to have him get a bigger bower.
i'm almost out of ideas,i can't explain it.
i guess the only solution is to have him get a bigger bower.
Re: blower head experts within.
i'm almost out of ideas,i can't explain it.
i guess the only solution is to have him get a bigger bower.
i guess the only solution is to have him get a bigger bower.
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From: the not so stock tribe
Re: blower head experts within. he already sold the old heads, so i don't think putting back on is an option anymore.
the springs were swapped just to try to bring the combo to where it was bfore.
wouldn't a very stiff spring cause the lifter to collapse under load?
the springs were swapped just to try to bring the combo to where it was bfore.
wouldn't a very stiff spring cause the lifter to collapse under load?
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From: South Jersey
Re: blower head experts within. Not to change the subject but, how good do the 6.0 heads flow over the 5.7heads? I'm getting 6.0 heads but don't know if I should bother having them mildly ported or just leave them stock? What does everyone think?
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From: the not so stock tribe
Re: blower head experts within. a call to comp cams netted the following, they said to advance the cam timing 4 deg. they think that the car has toomuch exhaust compared to intake.
we'll see how that goes.
we'll see how that goes.
