[2003_GT]

Ok so i have posted on this subject before. Heres my problem, my best time at the track with out gears/tuner 15.2 best time with gears 15.3 But on the street i can defenetly feel the improvment in performance, and this is with nitto drags in the rear. Recently my intake manifold cracked, i bumbed into this guy selling his for 200(the same typhoon intake i currently have) brand new still in the box(he needed the money) and put it in the stang. Tonight i raced a 01 GT 5 speed with only a cold air and a cat back(flowmaster i think) and he smoked me WTF!!!!! Now i know that 5 speeds are faster than automatics but with my mods i have i should beat them right? especially one with just those mods? I dont know whats going on but sadly for the first time ever i am considering getting a different car.

[craven]

sounds like you have a lack of compression or a bent valve or something...

you should be running low 14's.....

[2003_GT]

And how do i check that stuff?? i would love to get this figured out i know the potential my car has but have nothing to prove it

[craven]

get a compression test done, or get a compression check kit, and it plugs into where the spark plugs go, and u crank the engine over for 5 seconds, and do that for each cylinder....any more than 10-15% variance is bad...you should have over 140-150 psi....

also get a leak down check to make sure the valves arent bent...

is the engine knocking or making any ticking sounds?

[2003_GT]

No knocking or anything like that but when its not warmed up theres some ticking

[7stang0]

how many miles are on the car? id get those heads checked out. the pi hehead when i bought them they came off a low mile 99 gt and they had a bent valve.its a good thing i had them checked before they went onto the car

[05horse]

i know how it is... all to well... hang in there

[monkeymanx3]

ticking .... could lead to a bad lash adjuster " lifter"

[TigerSN95guy]

funny question tho... i drive a T45 5 speed.... WHAT makes you think a 5 speed is "faster" than an automatic...

if ANYTHING an automatic has constant drive forward never releases torque just pushes more... meaning less time to disengage and engage the drivetrain...cough "faster"

and an automatic can SHIFT faster than any human EVER could cuz again it just tightens up more and more and is instantly in the next gear *providing it is working right*... cough "faster"

AND providing u powerbrake or have a stall converter, or both, u dont have the DELAY of u side-stepping the clutch and that fraction of a second of the pedal springing up and grabbing the flywheel... ur automatic is ALREADY engaged and ready to launch...

AND you have less chance of just hammering the tires off the car and sitting still, cuz there isnt a sudden surge of torque on the rear wheels, therefore not breaking them free... meaning a cough "faster" time traveling the track...

DONT GET ME WRONG, there ARE advantages a 5 speed has over an automatic, such as controlling ur shift points exactly to a tee and u dont have to reset ur parameters on ur computer anytime u wanna change at which point ur transmission shifts... a standard transmission built right can handle more torque than an auto... I.E. top fuel drag racing, they use standards... granted i think its a 3 speed gear box but still... again advantages and disadvantages... but neither is necessarily "faster" than the other... for MULTIPLE reasons... but if u have a REALLY good driver behind a standard...then you might have a good arguement...

[2003_GT]

Originally Posted by craven

get a compression test done, or get a compression check kit, and it plugs into where the spark plugs go, and u crank the engine over for 5 seconds, and do that for each cylinder....any more than 10-15% variance is bad...you should have over 140-150 psi....

also get a leak down check to make sure the valves arent bent...

is the engine knocking or making any ticking sounds?

If there is something wrong with the compression how do i fix it/ where do i take it?

Originally Posted by monkeymanx3

ticking .... could lead to a bad lash adjuster " lifter"

What exactly causes ticking? How do i prevent this?

[2003_GT]

Originally Posted by 1994MustangGT50

funny question tho... i drive a T45 5 speed.... WHAT makes you think a 5 speed is "faster" than an automatic...

if ANYTHING an automatic has constant drive forward never releases torque just pushes more... meaning less time to disengage and engage the drivetrain...cough "faster"

and an automatic can SHIFT faster than any human EVER could cuz again it just tightens up more and more and is instantly in the next gear *providing it is working right*... cough "faster"

AND providing u powerbrake or have a stall converter, or both, u dont have the DELAY of u side-stepping the clutch and that fraction of a second of the pedal springing up and grabbing the flywheel... ur automatic is ALREADY engaged and ready to launch...

AND you have less chance of just hammering the tires off the car and sitting still, cuz there isnt a sudden surge of torque on the rear wheels, therefore not breaking them free... meaning a cough "faster" time traveling the track...

DONT GET ME WRONG, there ARE advantages a 5 speed has over an automatic, such as controlling ur shift points exactly to a tee and u dont have to reset ur parameters on ur computer anytime u wanna change at which point ur transmission shifts... a standard transmission built right can handle more torque than an auto... I.E. top fuel drag racing, they use standards... granted i think its a 3 speed gear box but still... again advantages and disadvantages... but neither is necessarily "faster" than the other... for MULTIPLE reasons... but if u have a REALLY good driver behind a standard...then you might have a good arguement...

Very well said, i should have been a bit more clear... I was reffering to the fact that a manual transmission car has more horsepower than an auto, right? Head to head a stock auto and a stock 5 speed the 5 speed will win cuz it outperformes the auto having more power to the rear wheels, right? Dont know how true this is but its deffenetly wat iv seen, im sure most of you guys know a whole lot more than me on this subject, im still learning

[xKeatonx]

Defiantely should've smoked him with those 3.90's.

[craven]

Originally Posted by 2003_GT

If there is something wrong with the compression how do i fix it/ where do i take it?

you would need to take the heads off and take them to a machine shop to get them milled and all new valves put in with all new valve guides...

and 2 brand new ford racing head gaskets....and them its possible the rings could be bad....

[2003_GT]

Originally Posted by craven

you would need to take the heads off and take them to a machine shop to get them milled and all new valves put in with all new valve guides...

and 2 brand new ford racing head gaskets....and them its possible the rings could be bad....

Sounds expensive

So i do a compression test, and a leak down test if compression is off i take it apart and have a machine shop mill it and then replace valves and valve guides? The compression test also lets me know what condition the rings are in right? ill take it one step at a time but please keep posting i need all the help i can get!!!!!!!!!!!!

[craven]

Originally Posted by 2003_GT

Sounds expensive

So i do a compression test, and a leak down test if compression is off i take it apart and have a machine shop mill it and then replace valves and valve guides? The compression test also lets me know what condition the rings are in right? ill take it one step at a time but please keep posting i need all the help i can get!!!!!!!!!!!!

correct....have a check at the rings when the heads come off.....but then again the compression test may be good....