Help with h-pipe???plz

90dpscoupe · 08-11-2001, 08:41 PM

Ok, i began the h-pipe installation this morning, it was a @#$@%, the installation wasnt all that bad, but when i went to put my 02 sensor back in the pass side, it cross threaded, and was tight around half way in? also, the clearance is tight right there, i think this could be leaking possibly, is it a defected part? i know the 02 is good, cuz i changed it with the other side, and same results, also what do i do with the air tube? is it alright to hook it up into the exhaust? it is an offroad.
And one more thing, i hear a leak somewhere, in the center, near my trans, is it possible i didnt get the middle clamp on tight? does it fit inside the other, or does it fit flush? sorry bout all these ?'s
but you guys always know...

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90 lx coupe:5spd, 176k miles, steeda water pump pulley, Mac cold air fenderwell, Mac h-pipe, supercoil, ADS chip, aluminum D/S, Black magic fan, 3.27grs.
Best time: 13.9116(on 225/60/15 firehawks)
Best mph: 98.17
Best 60': 1.9607

next mods:4.10's

smokedchevy · 08-12-2001, 03:20 AM

Is it a BBK H-pipe? I have one of those and when I put it on, it leaked from every flange that existed. But, I manged to get it properly fixed. The O2 sensor touches the frame, but you have to live with that. It's no big deal really. The easiet way to pull it on is to jack the car up really high from the front and back. Then slide under so your face is under your oil pan. Then put both feet up against the bottom of your car and pull that sucka on! It's almost a deadlift, so you can get a lot of pulling power. It should fit nicely against your header flanges. Then I used exhaust donuts from pepboys to seal the leaks in front of the mufflers. The airtube should plug into the h-pipe. The cross tube should fit one inside the other. Then the clamp goes around it. Hope this helps. Good luck!

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92 GT, 4:10 gears, centerforce clutch, 6# powerdyne blower, bbk h-pipe, flowmasters

joe4speed · 08-12-2001, 03:48 AM

you can also use a length of heater hose to attach the air tube to the new pipe.
Good luck man, I can't help ya with the O2 sensors, but Mine leaked too, took a little work to get it perfect!

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Joe! 1988 GT, 167,000 miles!!! 13.58@105mph Check out my listing! Click here! Or my website:www.joe4speed.com
99 Ninja ZX-6R:10.32@135mph!
1993 Olds Eighty Eight LSS 16.40@88.8mph

84LX89GT · 08-12-2001, 06:22 PM

Here's why i never use clamps on any of my exhaust. Whenever i do exhaust on one of my cars i get it welded because clamps usually don't clamp evenly around a pipe and if you get it too tight it will bend the pipe and cause an even worse leak. It takes quite a bit of skill to be able to put together exhaust with clamps and not have it leak. Once you start cross threading something and it's hard to wrench it in, it's a good idea to get something to clean the threads out like a thread chaser or even a wire brush to get out all the little crud from the ripped up threads. Try getting a thread chaser that will fit your sensor bung and clearing out the threads so that your sensor will go in properly. You can leave it the way it is, but in the future you may have to replace it for some reason and find that the next one won't even go into the pipe. Good luck.

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previous name: 84stangLX
'84 Mustang 5.0 LX
my LX
'89 Mustang GT
my GT

SaleenGTS · 08-12-2001, 08:33 PM

BBK: EXCELLENT HEADERS, TERRIBLE crossovers

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Dustin
89 Saleen GT Sport,428 rwhp,TFS Street Heat Intake,TFS TW Heads,TFS #2 cam,BD-11A 9 psi,Crane 1.6 rr's,BBK 70mm TB,Pro-M 80mm MAF,MSD 6BTM, FMS 9mm wires,BBK longtubes,BBK Short H-pipe,American Thunder cat back,3.55's

12.3@119

08-11-2001, 08:41 PM	#1
90dpscoupe Registered Member Join Date: Jun 2000 Location: sanantonio, Tx, usa Posts: 1,407	Help with h-pipe???plz Ok, i began the h-pipe installation this morning, it was a @#$@%, the installation wasnt all that bad, but when i went to put my 02 sensor back in the pass side, it cross threaded, and was tight around half way in? also, the clearance is tight right there, i think this could be leaking possibly, is it a defected part? i know the 02 is good, cuz i changed it with the other side, and same results, also what do i do with the air tube? is it alright to hook it up into the exhaust? it is an offroad. And one more thing, i hear a leak somewhere, in the center, near my trans, is it possible i didnt get the middle clamp on tight? does it fit inside the other, or does it fit flush? sorry bout all these ?'s but you guys always know... ------------------ 90 lx coupe:5spd, 176k miles, steeda water pump pulley, Mac cold air fenderwell, Mac h-pipe, supercoil, ADS chip, aluminum D/S, Black magic fan, 3.27grs. Best time: 13.9116(on 225/60/15 firehawks) Best mph: 98.17 Best 60': 1.9607 next mods:4.10's

08-12-2001, 03:20 AM	#2
smokedchevy Registered Member Join Date: Jun 2000 Location: ventura,CA Posts: 438	Is it a BBK H-pipe? I have one of those and when I put it on, it leaked from every flange that existed. But, I manged to get it properly fixed. The O2 sensor touches the frame, but you have to live with that. It's no big deal really. The easiet way to pull it on is to jack the car up really high from the front and back. Then slide under so your face is under your oil pan. Then put both feet up against the bottom of your car and pull that sucka on! It's almost a deadlift, so you can get a lot of pulling power. It should fit nicely against your header flanges. Then I used exhaust donuts from pepboys to seal the leaks in front of the mufflers. The airtube should plug into the h-pipe. The cross tube should fit one inside the other. Then the clamp goes around it. Hope this helps. Good luck! ------------------ 92 GT, 4:10 gears, centerforce clutch, 6# powerdyne blower, bbk h-pipe, flowmasters

08-12-2001, 03:48 AM	#3
joe4speed He said Member...heh, heh Join Date: Sep 1999 Location: Jupiter, Florida U.S.A. Posts: 3,718	you can also use a length of heater hose to attach the air tube to the new pipe. Good luck man, I can't help ya with the O2 sensors, but Mine leaked too, took a little work to get it perfect! ------------------ Joe! 1988 GT, 167,000 miles!!! 13.58@105mph Check out my listing! Click here! Or my website:www.joe4speed.com 99 Ninja ZX-6R:10.32@135mph! 1993 Olds Eighty Eight LSS 16.40@88.8mph

08-12-2001, 06:22 PM	#4
84LX89GT Mustangs Join Date: Jul 2000 Posts: 1,938	Here's why i never use clamps on any of my exhaust. Whenever i do exhaust on one of my cars i get it welded because clamps usually don't clamp evenly around a pipe and if you get it too tight it will bend the pipe and cause an even worse leak. It takes quite a bit of skill to be able to put together exhaust with clamps and not have it leak. Once you start cross threading something and it's hard to wrench it in, it's a good idea to get something to clean the threads out like a thread chaser or even a wire brush to get out all the little crud from the ripped up threads. Try getting a thread chaser that will fit your sensor bung and clearing out the threads so that your sensor will go in properly. You can leave it the way it is, but in the future you may have to replace it for some reason and find that the next one won't even go into the pipe. Good luck. ------------------ previous name: 84stangLX '84 Mustang 5.0 LX my LX '89 Mustang GT my GT

08-12-2001, 08:33 PM	#5
SaleenGTS RICE taste like Chicken Join Date: Jun 2000 Location: Edmond, OK Posts: 687	BBK: EXCELLENT HEADERS, TERRIBLE crossovers ------------------ Dustin 89 Saleen GT Sport,428 rwhp,TFS Street Heat Intake,TFS TW Heads,TFS #2 cam,BD-11A 9 psi,Crane 1.6 rr's,BBK 70mm TB,Pro-M 80mm MAF,MSD 6BTM, FMS 9mm wires,BBK longtubes,BBK Short H-pipe,American Thunder cat back,3.55's 12.3@119