When does the stock intake quit?

Coupe50h · 05-26-2003, 08:46 PM

My car seems to fall on it's face at 5400 rpm, i know stock intake is not for high rpm, but with my mods should it work a little better?
im afraid it could be my valves floating, i do have an explorer intake in my possesion i got tonight, i will hopefully install that next weekend, look at my new best e.t. in sig, im not happy with that, if it dont go 105mph with the intake im pulling the heads for some better springs

what ya think? timing 15*, fpr at 44 psi as is.
thnx....

84LX89GT · 05-26-2003, 10:59 PM

When i put the trick flow street intake on, the powerband increased heavily 2,000 rpm and higher and i lost a little bit of torque under 2,000 (which isn't what i'm concerned about

)
You can definately feel a difference with a better intake manifold, the engine used to start dying out 4500 and above and now pulls great to about the 5800-6000 rpm range.

QuantumMotorsports · 05-26-2003, 11:03 PM

Sounds to me like it might need to breathe a bit. If you float valves you will definately hear it. Backfiring a lot and shiz. Sounds like your combo definately requires more than stock intake. Slap that puppy on there and tell us how you do man.

tmoss · 05-27-2003, 07:43 AM

I'm surprised you got the stock lower to pull good to 5,400 rpm. That Explorer should fix your problem.

Ackbar00 · 05-27-2003, 11:54 AM

When does the stock intake quit?

When you buy your car

Dark_5.0 · 05-27-2003, 12:40 PM

The explorer flows way better than the stocker. My car runs better with the explorer intake than it did with the cobra.

Coupe50h · 05-27-2003, 10:40 PM

Thats what i want to hear

, im going to get the tap for the act sensor, maybe some paint for the upper tommorow, but i'll be done next friday.

in the higher rpms it does not backfire, but it will studder, just loses steam i guess. today i backed off timing and fp, and got it to make good power at 5500 rpm. (stock tach)

i'll post new e.t gains probaly next wed, of course i'll have to clean up the intake with a dremel first.

also, im thinking about going down to 1.6 rr's to get some of that lift off the stock springs.....all in all, the car pulls hard, and is very responsive even with the gear ratio.

thnx for the opinions.

Dog5ohfun · 05-30-2003, 01:06 AM

Just a side note for your power drop at 5400 RPM. When in factory trim power drops at 5250, so the intake is probably only good through 5500. I use to pull my RPM till the tach bounced with stock everything and the E-cam. I know the tach wasn't right. But remember that the E-303 peaks in power at 5500 rpm. One thing that would help for information sake is an autometer tach. I just thought I would offer up my opinion. Good luck with the new intake.

Coupe50h · 05-30-2003, 01:16 AM

dog5oh, i know i need a tach, also i thought the e-cam at least went to 5800? well i'll be done with intake this weekend, got the tap, now i need some crazy size drill bit.

intake is being cut on tommorow.

tmoss · 05-30-2003, 07:13 AM

Be sure to lube the tap good while your cutting for good clean threads.

Dark_5.0 · 05-30-2003, 08:27 AM

You dont have to tapp that 3/8's hole in the #5 runner if you dont want to.

You can relocate the ACT sensor to the air intake tube if you want.

Coupe50h · 05-30-2003, 02:05 PM

Yea i know, but id like to put it back in it's original position, how it came factory, i thought about it, but i already have a 10$ tap

so im using it.
thnx...
dark 5.0, why did you go to a cobra, if you said the explorer ran better?

Falcons Talon · 09-15-2003, 03:46 PM

I hate to pull up an old thread, but I have a question on the ACT sensor. My ACT sensor required a 5/8 inch tap on the #5 runner...not the 3/8 that you have on this post. Is that normal?

Coupe50h · 09-15-2003, 03:56 PM

Quote:

Originally posted by Falcons Talon
I hate to pull up an old thread, but I have a question on the ACT sensor. My ACT sensor required a 5/8 inch tap on the #5 runner...not the 3/8 that you have on this post. Is that normal?

Yea this is an old thread

, i may have mistaken the size? since i gave the tap to my friend, i dont remember?

but all in all, i had it finished, had the intake cut on a little (porting) and i love it, best bang for buck intake i ever seen. good luck.

Dark_5.0 · 09-15-2003, 04:48 PM

I had to use a 3/8 inch pipe thread tap for mine.

tmoss · 09-15-2003, 04:50 PM

I port intakes and tap the EGR coolant and ACT holes on a regular basis and I can say that the Ford intakes (stock & Cobra family) have 3/8 NPT holes from the factory.

05-26-2003, 08:46 PM	#1
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	When does the stock intake quit? My car seems to fall on it's face at 5400 rpm, i know stock intake is not for high rpm, but with my mods should it work a little better? im afraid it could be my valves floating, i do have an explorer intake in my possesion i got tonight, i will hopefully install that next weekend, look at my new best e.t. in sig, im not happy with that, if it dont go 105mph with the intake im pulling the heads for some better springs what ya think? timing 15*, fpr at 44 psi as is. thnx.... __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

05-26-2003, 10:59 PM	#2
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	When i put the trick flow street intake on, the powerband increased heavily 2,000 rpm and higher and i lost a little bit of torque under 2,000 (which isn't what i'm concerned about ) You can definately feel a difference with a better intake manifold, the engine used to start dying out 4500 and above and now pulls great to about the 5800-6000 rpm range. __________________ 2005 Suzuki Hayabusa GSX1300-R 1980 Ford Thunderbird - 255 V8 ported heads, 5.0L ported stock headers, O.R. H-pipe and Flowmaster 2-chambers, dual roller timing chain hi-po Mack Truck hood emblem 1985 Mustang GT 5.0L T5, F-303, GT40p, headers, off-road h, flowmasters, MSD stuff, etc. Sold 02/06/04 1989 Mustang GT ET: 13.304@102.29 mph (5-24-03) Sold - 1998 Mustang Cobra coupe, 1/4 mile - street tires: 13.843@103.41 (bone stock)

05-26-2003, 11:03 PM	#3
QuantumMotorsports Registered Member Join Date: Jul 2000 Location: Norman, Oklahoma, USA Posts: 597	Sounds to me like it might need to breathe a bit. If you float valves you will definately hear it. Backfiring a lot and shiz. Sounds like your combo definately requires more than stock intake. Slap that puppy on there and tell us how you do man. __________________ Michael Black QuantumMotorsports Norman, OK 1984 LX Hatch 306 w/ TRW forged flat toppers, Comp Cams Magnum 292H, GT40P heads w/ 3 angle valve job, .550 lift springs, Angus Racing Roller Rockers, Weiand Stealth Intake, Holley 4150 650cfm carb, MAC 1 5/8 Long Tubes, Single Chamber Flowmasters, 91' T5 w/ Pro 5.0 shifter, Turbo Coupe 8.8 Rear w/ 3.55 gears, QA1 Motorsports tubular K member, no interior except steering wheel and seat. Coming soon: 6 or 8 point cage, Fuel Cell, Weld Draglites

05-27-2003, 07:43 AM	#4
tmoss Registered Member Join Date: Mar 2003 Location: Saint Louis, MO Posts: 634	I'm surprised you got the stock lower to pull good to 5,400 rpm. That Explorer should fix your problem. __________________ Tom (Torque) Moss 88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108.5° ICL, NMRA prepped GT40P heads 1.85/1.55 valves and 1.7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 277RWHP/330RWTQ (SAE). http://www.fastlanecars.com/

05-27-2003, 12:40 PM	#6
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	The explorer flows way better than the stocker. My car runs better with the explorer intake than it did with the cobra. __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer

05-27-2003, 11:54 AM	#5
Ackbar00 Rebel Fleet Commander Join Date: Oct 2001 Location: Huber Heights, OH Posts: 1,003	When does the stock intake quit? When you buy your car __________________ 1993 Mustang GT, PTK w/ T-64 - My Cardomain Webpage 11.25@123.5 on only 8 psi. 10.84@121 on only 1 headgasket "The Truth is, Your the Weak, and I am the Tyranny of Evil Men!"

05-27-2003, 10:40 PM	#7
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	Thats what i want to hear, im going to get the tap for the act sensor, maybe some paint for the upper tommorow, but i'll be done next friday. in the higher rpms it does not backfire, but it will studder, just loses steam i guess. today i backed off timing and fp, and got it to make good power at 5500 rpm. (stock tach) i'll post new e.t gains probaly next wed, of course i'll have to clean up the intake with a dremel first. also, im thinking about going down to 1.6 rr's to get some of that lift off the stock springs.....all in all, the car pulls hard, and is very responsive even with the gear ratio. thnx for the opinions. __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

05-30-2003, 01:06 AM	#8
Dog5ohfun Registered Member Join Date: Feb 2002 Location: Arlington, Washington Posts: 92	Just a side note for your power drop at 5400 RPM. When in factory trim power drops at 5250, so the intake is probably only good through 5500. I use to pull my RPM till the tach bounced with stock everything and the E-cam. I know the tach wasn't right. But remember that the E-303 peaks in power at 5500 rpm. One thing that would help for information sake is an autometer tach. I just thought I would offer up my opinion. Good luck with the new intake. __________________ Black 1990 LX DSS Racing Super Pro Bullit 331, AFR 185, Anderson B31 Cam, 1.6 DSS rockers, Cobra Intake w/ 2 phenolic spacer, Aluminum DS, 3.73 gears, Tremec 3550, Lakewood SFI Bellhousing, MSD Digital 6+, Spintech Side Exhaust,

05-30-2003, 01:16 AM	#9
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	dog5oh, i know i need a tach, also i thought the e-cam at least went to 5800? well i'll be done with intake this weekend, got the tap, now i need some crazy size drill bit. intake is being cut on tommorow. __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

05-30-2003, 07:13 AM	#10
tmoss Registered Member Join Date: Mar 2003 Location: Saint Louis, MO Posts: 634	Be sure to lube the tap good while your cutting for good clean threads. __________________ Tom (Torque) Moss 88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108.5° ICL, NMRA prepped GT40P heads 1.85/1.55 valves and 1.7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 277RWHP/330RWTQ (SAE). http://www.fastlanecars.com/

05-30-2003, 08:27 AM	#11
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	You dont have to tapp that 3/8's hole in the #5 runner if you dont want to. You can relocate the ACT sensor to the air intake tube if you want. __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer

05-30-2003, 02:05 PM	#12
Coupe50h Registered Member Join Date: Aug 2002 Location: SanAntonio, Tx Posts: 957	Yea i know, but id like to put it back in it's original position, how it came factory, i thought about it, but i already have a 10$ tap so im using it. thnx... dark 5.0, why did you go to a cobra, if you said the explorer ran better? __________________ X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's. race weight 3,160 12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear 13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear

09-15-2003, 03:46 PM	#13
Falcons Talon T.P.M. President Join Date: May 2002 Location: Brownsville Posts: 265	I hate to pull up an old thread, but I have a question on the ACT sensor. My ACT sensor required a 5/8 inch tap on the #5 runner...not the 3/8 that you have on this post. Is that normal? __________________

09-15-2003, 04:48 PM	#15
Dark_5.0 Registered Member Join Date: Apr 2001 Location: Staging lane Posts: 4,337	I had to use a 3/8 inch pipe thread tap for mine. __________________ 92' LX-Big brakes, Lots and lots of suspension, GT40X heads, Ported cobra intake, stock cam, Vortech SC trim. 00' Lightning-Stock 88'CRX-13 second ego killer

09-15-2003, 04:50 PM	#16
tmoss Registered Member Join Date: Mar 2003 Location: Saint Louis, MO Posts: 634	I port intakes and tap the EGR coolant and ACT holes on a regular basis and I can say that the Ford intakes (stock & Cobra family) have 3/8 NPT holes from the factory. __________________ Tom (Torque) Moss 88Gt 5spd Vert, FLowmaster Catbacks, stock cam advanced 4° @ 108.5° ICL, NMRA prepped GT40P heads 1.85/1.55 valves and 1.7 rockers, MAC P headers Jet-Hot coated, 97 Exlporer intake (ported lower), TB and injectors. 277RWHP/330RWTQ (SAE). http://www.fastlanecars.com/

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