help!! o/r h-pipe problems

Stang39r · 05-21-2002, 08:49 PM

well i just installed my o/r h-pipe yesterday and i have fallen in love with the sound....BUT!!! but i have a handful of problems now. first off, i am at a total loss of power. ive lost it all. there is no torque and feels like no hp anymore. just gone.

second, there is an exhaust smell coming from my vents. is that normal or is there a leak in the connections?? could this be the problem thats causing a loss of power (lack of pressure??)

lastly, i think its supposed to be like this but is there supposed to be a kind of clicking from the headers/h-pipe connection?? the exhaust itself soundsa AWSOME but really only from behind. my buddy says it kinda sounds like a tractor on speed. just curious if this is normal or if it sounds like a leak. thanx a ton everyone

Bad89stang · 05-21-2002, 09:30 PM

You have an exhaust leak. They almost always make a ticking noise. It is coming from the flange connection between the H-pipe and the header. Make sure that the dome on the header is completely seated in the H-pipe. A leak in this area will cause a dramatic loss of torque. You should be gaining a noticable amount of power from this upgrade. The only exhaust smell should be coming out of the tailpipes. Time to get back under there....

Coupe5oh · 05-22-2002, 12:59 AM

Yea it took me a while to get all the leaks worked out, but just tighten and retighten, just do each side little at a time, i cant wait to get rid of my mac h-pipe, sounds good, but im ready for something different, such as a prochamber x-pipe.

USMC302 · 05-22-2002, 12:28 PM

Also, it is best to bolt up exhaust on a drive on lift or ramps, jacking it up on the frame and bolting in causes leaks too because of the uneven body twist. Make sure you do each side a little at a time going back and forth between the two as mentioned earlier, this will help the installation go smooth with good results, good luck.

Coupe5oh · 05-22-2002, 01:38 PM

off the subject a little, but usmc, how do you go low 12's on a 302? i mean what heads intake combo are you using? and comression...thnx.

Stang39r · 05-22-2002, 07:32 PM

well back on topic

...i tightened everything up and it sounds great buuuuuuuuuuuuut, no difference. maybe a tiny bit back. its still the same. i cleaned the MAF, changed fuel and PCV filter and anything else i could think of. the only thing left is try new O2 sensors but i have to wait a week for my buddy to get his MILS so i can take his back O2 sensors (if anyone knows they fit or not). any more ideas will be taken into consideration. thanx a ton

05-21-2002, 08:49 PM	#1
Stang39r Registered Member Join Date: Feb 2002 Location: Chicago Posts: 53	help!! o/r h-pipe problems well i just installed my o/r h-pipe yesterday and i have fallen in love with the sound....BUT!!! but i have a handful of problems now. first off, i am at a total loss of power. ive lost it all. there is no torque and feels like no hp anymore. just gone. second, there is an exhaust smell coming from my vents. is that normal or is there a leak in the connections?? could this be the problem thats causing a loss of power (lack of pressure??) lastly, i think its supposed to be like this but is there supposed to be a kind of clicking from the headers/h-pipe connection?? the exhaust itself soundsa AWSOME but really only from behind. my buddy says it kinda sounds like a tractor on speed. just curious if this is normal or if it sounds like a leak. thanx a ton everyone

05-21-2002, 09:30 PM	#2
Bad89stang Registered Member Join Date: Aug 2001 Location: Ft. Worth, TX Posts: 456	Get back under the car... You have an exhaust leak. They almost always make a ticking noise. It is coming from the flange connection between the H-pipe and the header. Make sure that the dome on the header is completely seated in the H-pipe. A leak in this area will cause a dramatic loss of torque. You should be gaining a noticable amount of power from this upgrade. The only exhaust smell should be coming out of the tailpipes. Time to get back under there.... __________________ You're gonna need your seatbelt

05-22-2002, 12:59 AM	#3
Coupe5oh Registered Member Join Date: Nov 2001 Location: SanAntonio, Tx Posts: 734	Yea it took me a while to get all the leaks worked out, but just tighten and retighten, just do each side little at a time, i cant wait to get rid of my mac h-pipe, sounds good, but im ready for something different, such as a prochamber x-pipe. __________________ Police package 5spd 90 Lx, Stock original motor, 3.27grs, BM fan, fms 10.5 clutch, D&D quadrant, and adjuster, ADS chip, 180 stat, mac cai, mac h-pipe, mac subframe connectors, ASP crank pulley, ripper shifter, 26x10.5 M/T sport pros welds. 246 hp according to analyzer Race weight: 3,120 E.t-13.57 with 26x10.50's e.t. streets. 1.88 60' mph- 99.92 mph

05-22-2002, 12:28 PM	#4
USMC302 Registered Member Join Date: Apr 2001 Location: Gallatin, Tn Posts: 1,326	Also, it is best to bolt up exhaust on a drive on lift or ramps, jacking it up on the frame and bolting in causes leaks too because of the uneven body twist. Make sure you do each side a little at a time going back and forth between the two as mentioned earlier, this will help the installation go smooth with good results, good luck. __________________

05-22-2002, 01:38 PM	#5
Coupe5oh Registered Member Join Date: Nov 2001 Location: SanAntonio, Tx Posts: 734	off the subject a little, but usmc, how do you go low 12's on a 302? i mean what heads intake combo are you using? and comression...thnx. __________________ Police package 5spd 90 Lx, Stock original motor, 3.27grs, BM fan, fms 10.5 clutch, D&D quadrant, and adjuster, ADS chip, 180 stat, mac cai, mac h-pipe, mac subframe connectors, ASP crank pulley, ripper shifter, 26x10.5 M/T sport pros welds. 246 hp according to analyzer Race weight: 3,120 E.t-13.57 with 26x10.50's e.t. streets. 1.88 60' mph- 99.92 mph

05-22-2002, 07:32 PM	#6
Stang39r Registered Member Join Date: Feb 2002 Location: Chicago Posts: 53	well back on topic ...i tightened everything up and it sounds great buuuuuuuuuuuuut, no difference. maybe a tiny bit back. its still the same. i cleaned the MAF, changed fuel and PCV filter and anything else i could think of. the only thing left is try new O2 sensors but i have to wait a week for my buddy to get his MILS so i can take his back O2 sensors (if anyone knows they fit or not). any more ideas will be taken into consideration. thanx a ton

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