Installing 4-1 header

[gsr916]

hmm ok so i should just shave off some plastic from the fan and unbolt the slave cylinder and slightly push on it to get it to fit?

[boosted k20]

thats what i did and it everything went fine. i just moved the slave cylinder to the left and it gave me enough room to fit the header in there

[whitGSR07]

so today me and my and two friends attempted to install the header. Yeah so it didn't work too well. Ummm we got the heat shield off thats about it. The 4 bolts conecting it to the cat were rusted over like shit and I even used PB blaster. I could not get the shit off. So after hours of trying to get the bolts off I finally gave up. I even soaked the bolts in PB blaster stuff for like an hour...still nothing. So now I am breaking down and probably going to get a shop to do it for me. My car isn't old for integra's either (2000 GSR 50,000 miles) so I don't know why the bolts were so bad. But whatever. So yeah very disapointing day. I will go hang my self now.

[gsr916]

yea those bolts are a sonofabitch. i used an open end wrench, and connected another open end wrench to the side not connected to the bolt.... and used all of my strength. i also soaked in wd40... if you use the open end wrench trick or a cheater bar u should be able to get them.

[boosted k20]

i had a slight problem get n mine out. this is what i did, i used a wratchet(or breaker bar) and attached a piece of pipe at the end of it to give me more leverage/torque and the bolt came out with no problem. u might need to heat up the bolt too. thats a trick that works almost all the time. get a torch and heat up the bolts. then take a socket, hammer it onto the bolt so it's on there fully (theres usually corrosion on the bolt, which wont allow the socket to go all the way into the nut. heat n it up and hammer n the sockt onto the nut will get rid of this problem) then take the wratchet and attach it to the socket and attach a pipe at the end of the wratchet or breaker bar. u should now be able to turn that bolt loose!

also when u install everything, u might need a set of vice grips to pull the end of the header and the cat together. the header might look too short to bolt onto the cat, but u need to pull the cat and the header togther with the vice grip.

[AJ96Integra]

hey does anyone have experience with putting on DC 4-1 headers. I was thinkin about goin tsudo but i heard they are a bad product and on ebay they have brand new DC 4-1 ceramic headers for 250 w/ shipping and i think im gonna get them and they are one of the best brands out so i just wanted to kno if i had to do any real big mods to make it fit

[whtteg]

Originally Posted by AJ96Integra

hey does anyone have experience with putting on DC 4-1 headers. I was thinkin about goin tsudo but i heard they are a bad product and on ebay they have brand new DC 4-1 ceramic headers for 250 w/ shipping and i think im gonna get them and they are one of the best brands out so i just wanted to kno if i had to do any real big mods to make it fit

I aprreciate the fact the you searched to find your answer but you also revived a old dead thread. We try not to bring back any threads over 1-2 months old. Instead just read the thread you find and if it is more than 2 months old just start a new thread with a more specific question.
For your current question as long as the header is made for your car you will not have to modify anything for it to fit.