H-Pipe Install Time

squid · 11-09-2002, 05:52 PM

I will soon be getting an off road H-Pipe for my 93GT. Due to emissions testing in my area I will have to swap this pipe out with my stock pipe and cats for testing time. Can anyone out there tell me how long it takes to do this changeover?

Agent_4573 · 11-10-2002, 02:37 PM

with the car on two jackstands and some cinder blocks it took me and a helper about 3-4 hours to do. Take into account that one head stud was warped and that took about 30 mins to work off without braking it. Also the new h-pipe i got from summit didn't fit right so we spent about an hour using c clamps and slowly cranking the mufflers onto the h-pipe. This was all done by hand with no air compressor. If everything goes well and fits right you should be done in about an hours and a half. I'm in the same boat as you, i have to switch to my cat'd pipe every two years to get past inspection.

lx5091 · 11-10-2002, 03:14 PM

I wish I could just swap mine and not have to worry, unfortunately with a full stock exhaust except for the mufflers, I have gotten ticketed for "loud exhaust". I have to constantly watch for cops and I have to let up when I'm around them, sometimes I get stuck side by side and have to shift at like 1200rpm. If they hear me coming before I see them, it's guaranteed I'm getting followed for a block or two. It's pretty pathetic. My car really, really isn't that loud, and the body's bone stock with no STICKERS! My buddy has a full off road setup and it's at least 20db louder but he doesn't care cuz his dad is $$$$$$ with connects.

squid · 11-11-2002, 09:37 PM

Anyone have anymore info? please! All I want to do is know how long to just swap an h-pipe from stock to aftermarket? No headers etc.

79.302 · 11-16-2002, 10:37 PM

Why bother. There are aftermarket H-pipes sold by Jegs or Summit with Hi Flow cats and balance tubes.

MustangGT1990 · 11-16-2002, 11:17 PM

squid,

If your H-pipe was like mine, it had never been off the car for any reason. It turned out to be a pain. My stock headers had a stud and a bolt on each side. The 2 bolts came out fairly easy but BOTH studs twisted off. All 4 bolts connecting the H-pipe to the tail pipes twisted in to. This was no big deal because my BBK offroad H-pipe came with 4 new bolts. I ended up having to pull off both headers just to get the 2 studs out. So, I went to the local hardware store and bought 4 new bolts to bolt the H-pipe to the headers. The bolts were metric, I think a 12 x 1.5 thread pitch x 50 mm in length, anyways with new bolts I had the new H-pipe back on in no time. I'm not trying to scare you, I'm just saying don't let it get the best of you. These little 30 minute jobs can turn out to be real pains sometimes. But if you do change it out then swapping the 2 back and forth wouldn't be as bad if you were doing it every 2 years. That way the bolts wouldn't seize up and rust as bad.

Bluefox91LX · 11-17-2002, 02:09 AM

the first time i did an h-pipe swap it took me about 3-4 hours on a lift!

the bolts on the passenger side header-hpipe flange are a ***** the first time. you WILL need swivels and extensions and wrenches!

speaking of which, i passed my emmisions so it's time for another h-pipe swap!

MEDIK418 · 11-17-2002, 04:35 AM

THe first time took a couple of hours but I used an impact. I've had to do this about 4 times now due to blowed engines, transmissions and other things and now it takes about an hour from pulling in the driveway to lowering the jack. It is on a set of BBK long tubes so it's a little easier to get to but once you get everything limbered up, it shouldn't take too long.

Long live compressed air!!!

bigred90gt · 11-17-2002, 11:50 AM

All I can say is be careful and patient. Don't get in a big hurry to get it done. All that will do is cause problems. Spray some wd40 on the header to h-pipe bolts and let it sit for a while. I broke a stud off in the header. Real pain. If everything goes off without a hitch, it will probably take you about 1 1/2 hrs to 2 hrs. when you put the new one on, use some anti sieze on the bolts. I don't know about the h-pipe, but my X-pipe came with it. Let us know what you think of it when you're done.

Caymon

11-09-2002, 05:52 PM	#1
squid Registered Member Join Date: Sep 2002 Location: Dayton, OHIO Posts: 73	H-Pipe Install Time I will soon be getting an off road H-Pipe for my 93GT. Due to emissions testing in my area I will have to swap this pipe out with my stock pipe and cats for testing time. Can anyone out there tell me how long it takes to do this changeover? __________________ 93'GT 5spd. Underdrives, FMS clutch, adjustable quadrant,Flowmasters, Kenny Brown subframe connectors, 3.73 gears, Steeda Tri-Ax. JBA shorties, BBK h-pipe. More to come.

11-10-2002, 02:37 PM	#2
Agent_4573 Registered Member Join Date: May 2002 Location: New Jersey Posts: 375	with the car on two jackstands and some cinder blocks it took me and a helper about 3-4 hours to do. Take into account that one head stud was warped and that took about 30 mins to work off without braking it. Also the new h-pipe i got from summit didn't fit right so we spent about an hour using c clamps and slowly cranking the mufflers onto the h-pipe. This was all done by hand with no air compressor. If everything goes well and fits right you should be done in about an hours and a half. I'm in the same boat as you, i have to switch to my cat'd pipe every two years to get past inspection. __________________ '89 LX 5.0, off-road h pipe, flowmaster muffs, underdrive pulleys, rebuilt WC T-5, King Cobra Clutch, 65mm throttle body, Explorer Upper/GT40 lower, Lakewood Rear Lift Bars. 76mm C&L Mass air w/ inlet pipe, Twisted wedge heads w/ stage 2 port,polish, MAC equal length shorties, Billet AFPR, 255LPH fuel pump, fresh low end w/ 10.5:1 compression. If anyone ever wants to go to Raceway Park in Englishtown New Jersey, give me a shout. RICER HATERS CLUB MEMBER 87! www.ricehatersclub.com

11-10-2002, 03:14 PM	#3
lx5091 Registered Member Join Date: Nov 2001 Location: Fall River, MA Posts: 467	I wish I could just swap mine and not have to worry, unfortunately with a full stock exhaust except for the mufflers, I have gotten ticketed for "loud exhaust". I have to constantly watch for cops and I have to let up when I'm around them, sometimes I get stuck side by side and have to shift at like 1200rpm. If they hear me coming before I see them, it's guaranteed I'm getting followed for a block or two. It's pretty pathetic. My car really, really isn't that loud, and the body's bone stock with no STICKERS! My buddy has a full off road setup and it's at least 20db louder but he doesn't care cuz his dad is $$$$$$ with connects. __________________ '02 Explorer XLT 4.0L --Nice Vehicle '97 Saturn SL1--Soon to be ditched for a Ford!

11-11-2002, 09:37 PM	#4
squid Registered Member Join Date: Sep 2002 Location: Dayton, OHIO Posts: 73	Anyone have anymore info? please! All I want to do is know how long to just swap an h-pipe from stock to aftermarket? No headers etc. __________________ 93'GT 5spd. Underdrives, FMS clutch, adjustable quadrant,Flowmasters, Kenny Brown subframe connectors, 3.73 gears, Steeda Tri-Ax. JBA shorties, BBK h-pipe. More to come.

11-16-2002, 10:37 PM	#5
79.302 Registered Member Join Date: Jul 2002 Location: arizona Posts: 2	H-pipe Why bother. There are aftermarket H-pipes sold by Jegs or Summit with Hi Flow cats and balance tubes.

11-16-2002, 11:17 PM	#6
MustangGT1990 Registered Member Join Date: Mar 2002 Location: Oliver Springs, TN Posts: 31	squid, If your H-pipe was like mine, it had never been off the car for any reason. It turned out to be a pain. My stock headers had a stud and a bolt on each side. The 2 bolts came out fairly easy but BOTH studs twisted off. All 4 bolts connecting the H-pipe to the tail pipes twisted in to. This was no big deal because my BBK offroad H-pipe came with 4 new bolts. I ended up having to pull off both headers just to get the 2 studs out. So, I went to the local hardware store and bought 4 new bolts to bolt the H-pipe to the headers. The bolts were metric, I think a 12 x 1.5 thread pitch x 50 mm in length, anyways with new bolts I had the new H-pipe back on in no time. I'm not trying to scare you, I'm just saying don't let it get the best of you. These little 30 minute jobs can turn out to be real pains sometimes. But if you do change it out then swapping the 2 back and forth wouldn't be as bad if you were doing it every 2 years. That way the bolts wouldn't seize up and rust as bad. __________________ 1990 Mustang GT 25th Anniversary Edition, 5 speed, 5.0 bored .030" over, FRPP 65mm throttle body, FRPP 1.6 roller rockers, 70 mm MAF, Compcams XE264HR, FRPP Aluminum driveshaft, FRPP Heavy duty clutch, BBK offroad H-pipe, Dual-chamber Flows, Energy Suspension engine and tranny mounts

11-17-2002, 02:09 AM	#7
Bluefox91LX Registered Member Join Date: Sep 2002 Posts: 70	the first time i did an h-pipe swap it took me about 3-4 hours on a lift! the bolts on the passenger side header-hpipe flange are a ***** the first time. you WILL need swivels and extensions and wrenches! speaking of which, i passed my emmisions so it's time for another h-pipe swap!

11-17-2002, 04:35 AM	#8
MEDIK418 Registered Member Join Date: Mar 1999 Location: Amarillo, Texas, USA Posts: 780	THe first time took a couple of hours but I used an impact. I've had to do this about 4 times now due to blowed engines, transmissions and other things and now it takes about an hour from pulling in the driveway to lowering the jack. It is on a set of BBK long tubes so it's a little easier to get to but once you get everything limbered up, it shouldn't take too long. Long live compressed air!!! __________________ 1986 four-eyed LX coupe, 358 Cleveland, Tremec TKO600/centerforce clutch, dish cut Probe forged pistons, comp cams hyd.roller cam, .579/.588@224/230, Edel.performer, 670 holley street avenger, CPR custom built long tubes, ported and polished 4bbl heads, manley valves, beehive springs, MSD peo-billet dist/MSD6AL, fluidamper, 5 lug conv. with 17x8 bullits there's more but it's still not finished yet. Oh, and the oldest boy is turning his 89 GT into a FFR cobra this next summer.

11-17-2002, 11:50 AM	#9
bigred90gt 2 Stangs in the Stable Join Date: Apr 2002 Location: Baytown, TX Posts: 1,209	All I can say is be careful and patient. Don't get in a big hurry to get it done. All that will do is cause problems. Spray some wd40 on the header to h-pipe bolts and let it sit for a while. I broke a stud off in the header. Real pain. If everything goes off without a hitch, it will probably take you about 1 1/2 hrs to 2 hrs. when you put the new one on, use some anti sieze on the bolts. I don't know about the h-pipe, but my X-pipe came with it. Let us know what you think of it when you're done. Caymon __________________ '90 GT Under construction Best E.T. = Fast @ High Speeds - OK So I Lie. So What!!! 04 F-150 STX 4.2L 5 spd Rice Haters Club Member #128

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