Installing offroad H - any tips?

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red95gtconvert

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Ponca city, OK

Dec 5, 2006

#1

• Dec 5, 2006

• #1

Hello everyone UPS just delivered my MAC offroad H pipe, does anyone have any install tipes that they would like to share. I'm hoping it will sound good

Thanks in advance

 

Adam95GT

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Burlington, NJ

Dec 5, 2006

#2

• Dec 5, 2006

• #2

i just did a catted one... it will help if you spray down the bolts with some liquid wrench... some times the bolts on the headers and exhaust can be hard to break.... id sugest getting 4 new bolts for where the H connects to the cat back... only will cost you a few $ and will save you time from trying to reinstall rust covered bolts... IIRC... you need a between a 19MM (might be 18mm...) for where the pipe conects to the headers... a 7/8 inch wrench for the 02 sensors... and a 13mm or 1/2 inche wrench and socket for where the h connects to the cat back... (if you guys give me enough time i might rember every bolt size on the car...)

 

Adam95GT

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#3

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oh and i forgot to add make sure you have a decent extention it makes it alot easier... 10'' works great a swivel adapter will also prove handy...

 

HISSIN50

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#4

• Dec 5, 2006

• #4

Adam's post sounds good to me. I'd even recommend to hit the fasteners (I like PB for this kind of work) the night before and then once right before you start wrenching.

Have fun with the passenger side O2.

You might need a torch if the bolts look real bad (be careful of volatility of any penetrating lubes and a torch).

Good luck.

 

Adam95GT

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#5

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HISSIN50 said:

Adam's post sounds good to me. I'd even recommend to hit the fasteners (I like PB for this kind of work) the night before and then once right before you start wrenching.

Have fun with the passenger side O2.

You might need a torch if the bolts look real bad (be careful of volatility of any penetrating lubes and a torch).

Good luck.

Click to expand...

yea id spray the pass side o2 sensor a little bit as well... it did take some force on that 7/8th wrench to break it loose... oh and dont drop the 02 sensors... i made that mistake... and my car ran like crap and i couldnt figure out y.... oh another good idea is to spray the smog connection to the cats... sometimes that is trouble to break loose...

 

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red95gtconvert

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Ponca city, OK

Dec 5, 2006

#6

• Dec 5, 2006

• #6

Thanks for the tips guys!, I guess I should have told you guys that I removed and reinstalled my factory catted H pipe last week to make sure I would be able to remove it before ordering the offroad pipe, man that thing is heavy. It took alot of extensions, penetrating oil and cuss words to take if off and put it back on again. My real question is about the new pipe, it is in three pieces, two down pipes and the main H part, the two down pipes have hangers on them where they bolt to the H section, what do the hangers attach to? also should I use a floor jack to support the offroad pipe and start all the bolts then tighten everything down? how do you think it will sound?



Thanks in advance

 

Adam95GT

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#7

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the hangers attach near the trans ... on the bracket that goes accross your car.... i hung it in there first... then used the jack to push up on the ends that attach to the headers to line them up correctly... worked great...

 

HISSIN50

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Dec 6, 2006

#8

• Dec 6, 2006

• #8

I havent done a 3 piece H (my O/R was two pieces - as if you took as assembled H and cut it longitudinally right down the middle of the Crossover. All just for shipping purposes).

It will be total cake compared to tossing that stock H back in there. The hangers should hook up to the OEM hanger location. Is yours not lookin like it will? You could tack a couple hangers onto the new H-pipe at the spot that the OEM hangers are, if needed. Sometimes you really dont need the hangers anyhow.

Good luck - it will be a real easy install.

 

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red95gtconvert

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#9

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Thanks again guys, I'll give an update after I install it today.

 

drakesdad

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#10

• Dec 6, 2006

• #10

swivel socket...................works wonders..................

 

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red95gtconvert

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#11

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• #11

Believe it or not by some miracle I didn't even have to put a swivel to the exhaust manifold collector bolts, just a 2 foot extension.

 

drakesdad

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#12

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red95gtconvert said:

Believe it or not by some miracle I didn't even have to put a swivel to the exhaust manifold collector bolts, just a 2 foot extension.

Click to expand...

You know I used them when I first switched it out............but a few times I had to change the header bolt and I loosened them with a 2 ft extention as well.........glad to see you got it ready to go...

 

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red95gtconvert

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#13

• Dec 6, 2006

• #13

I installed it today, it was a piece of cake. The car sounds awesome now but the interior resonance will take a little while to get used to. I had my wife do a drive by for me and it sounds great while flying by.