I don't get it. Were you expecting mufflers to add power?Joes95GT said:Have you ever seen inside of a Flowmaster muffler? If you have, you would know why they kill horsepower. It looks like Flowmaster welded metal bricks in the muffler...
I don't get it. Were you expecting mufflers to add power?Joes95GT said:Have you ever seen inside of a Flowmaster muffler? If you have, you would know why they kill horsepower. It looks like Flowmaster welded metal bricks in the muffler...
GRGT1994 said:I don't get it. Were you expecting mufflers to add power?
moneypit94 said:... my dad has always told me that open headers would produce more power... But you had to extend them. He said to spray white paint on your h-pipe and where it stopped turning yellow from the heat thats how long you needed to extend them to...
LOL. Tom's one of them old guys who knows about that stuff . Just havin a little fun with ya Tom.tmoss said:Old racers trick that works. Using a new header extension without paint works too, just look at where the heat discoloration marking on the steel extension stops and cut them off there.
You missed the point.GRGT1994 said:I don't get it. Were you expecting mufflers to add power?
YES!final5-0 said:A thought or maybe it is a Q, it don't matter. Paul says he has same springs as HoofnIt and has no valve float plus higher rpms.
If it was ported correctly, it will make a lot of power.
As to losing power after 5000rpm, are your distributor & coil stock? If so, you may want to upgrade them.
On a mild street car with a GOOD exhaust and muffer combination, there is no reason why a car should pick up that much power simply by unhooking the mufflers.
The 1.7 rockers combined with weak spring pressures are causing the float problems.HoofnIt said:I guess the question is why did it then? You'll notice that the hp went up but the torque did not.
I have a suspicion that the 1.7 rockers are too much for the stock AFR springs. Maybe that is why the power is dropping off so early. The cobra intake should be making power up to 6K rpms.
tmoss said:Old racers trick that works. Using a new header extension without paint works too, just look at where the heat discoloration marking on the steel extension stops and cut them off there.
My Dad has worked as a mechanic at Ford for the past 22 years, so he's worked with TONS of hydraulic race junk. That's almost exactly what we did with my car. We did zero + "a tad".tmoss said:I only take 1/4 turn on mine and feel it's much better than 1/2 or 3/4 turns. Ford at one time actually recommended just zero lash for race cars on the hydraulics.
How was the cam installed? The Crowers have 4* of advance ground in, so waht ICL was it installed at?
HoofnIt said:I have not heard of ICL but I'm guessing you're talking about whether or not I advanced or retarded the cam when I installed it. I did neither; I lined the dots up straight up and down. I guess if what you're saying is correct about the 4 deg. of advance built in that would explain the car not picking up more power with more timing.
I knew about Matt's combo and was hopeful mine would be similar. Do you think the 1.7 rockers are actually costing me power? What do you think will happen to the hp and tq by going down to 1.6 rockers?
stangboy said:It interesting that you guys are saying that Ford used to do 0 lash. I set mine at a 1/2 turn after zero and my rockers are making more noise than they did before I readjusted them. I know the rockers aren't supposed to be making all that noise with a hydraulic cam/lifters. A friend of mine's solid lift valvetrain doesn't make as much noise as mine.
Joes95GT said:My Dad has worked as a mechanic at Ford for the past 22 years, so he's worked with TONS of hydraulic race junk. That's almost exactly what we did with my car. We did zero + "a tad".
Chalk up another one for Tom....
Joe
Yep, a little. Cold starts are loud and it quiets down considerably once temperature is stabilized. It sounds like it's got a solid cam in it at first with the loose-like "chick-chick-chick" sound.tmoss said:Any noise out of yours Joe? You do tend to learn something if you listen over a 40 year period.