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Fitting nc headers

Posted: Tue Sep 18, 2012 10:29 pm
by ansellpa
Ok so I am waiting for my goodwins roadster sport headers to arrive,
And need to work out how to fit them.
Given at the space looks very tight, and I am reluctant to remove all skin from my knuckles and swear like a sailor, I was hoping those who have been before me may have some tips.

For example do you undo engine mounts and try to push the engine to the side??

What can I do to get more room???

Re: Fitting nc headers

Posted: Tue Sep 18, 2012 11:12 pm
by Regie
Battery and battery box out
Alternator loosened
Bottom o2 sensor removed

There are some tips on the us site, not sure of links though

I installed mine about 6 months ago, took about 4hrs or so

Re: Fitting nc headers

Posted: Wed Sep 19, 2012 12:30 am
by deanb90
PITA job, be prepared for swearing and beers

Re: Fitting nc headers

Posted: Wed Sep 19, 2012 7:42 am
by ansellpa
Thanks for the tips.
Special tools or big socket extensions to get to hard to reach places???
What sort of beer is recommended?

Re: Fitting nc headers

Posted: Wed Sep 19, 2012 2:31 pm
by deanb90
no special tools, just your basic socket set etc. grab a can of WD-40, some of those bolts will be very hard to get off. Just be very careful when removing the bolts that go into the engine block, you don't want to thread one.

If your extending the O2 sensors you need to weld bungs into the midpipe, make sure the wires are not touching the exhaust, i put them over the transmission so they are out of the way.

Re: Fitting nc headers

Posted: Wed Sep 19, 2012 8:23 pm
by Regie
ratcheting ring spanners made my life soo much easier on some of the bolts

Re: Fitting nc headers

Posted: Wed Sep 19, 2012 9:02 pm
by ansellpa
Got some of those, they are the best.

Good mod this one?

Re: Fitting nc headers

Posted: Wed Sep 19, 2012 9:08 pm
by Regie
ansellpa wrote:Got some of those, they are the best.

Good mod this one?



might be some info here

http://forum.miata.net/vb/showthread.ph ... ht=headers


best bang for buck mod you can do to the NC!!

Re: Fitting nc headers

Posted: Thu Sep 20, 2012 11:40 am
by ansellpa
Yikes,
Really don't want to have those problems.
Might spray it with wd and let it sit for a while before I attempt

Re: Fitting nc headers

Posted: Sat Nov 03, 2012 1:52 am
by ansellpa
Job done! Yes it was difficult but no stripped nuts or cutting of heat shields.
Now I just need to have bungs welded onto mid pipe by mechanic so I can fit extended o2 sensors and I am away.

Re: Fitting nc headers

Posted: Sat Nov 03, 2012 2:07 pm
by Regie
are you running the Goodwin rear muffler also??

The power gains are awesome from just a header install!!

Re: Fitting nc headers

Posted: Sat Nov 03, 2012 10:49 pm
by ansellpa
Yes, I have not drĂ­ven the car stock so won't have a bench mark.
Got the race rear muffler but keeping stock mid pipe and will get bungs welded for sensors.

Is it worth getting an entire custom midpipe?

Also getting ecu reflashed by targa racing.
Has been a busy few weeks in my garage.
Full fluid change,
Porterfield race pads
Aem intake fitted
Auto exe adjustable Coilovers
4.1 Jdm LSD

Racing beat front and rear swaybars and end links
Wheels 17x 8 and hankook semis


Next up is cage and braided lines.
Tried to get stock lines off but vf tight and worried about stripping the fittings.

Should be ready for sprints and or Race in the new year.

Re: Fitting nc headers

Posted: Sun Nov 04, 2012 6:25 am
by Regie
Sweet, sounds very similar to the mods on my car

I also got the reflag done by targa racing. Chris is a great guy to deal with

I must get my 4.1 installed soon too haha

Re: Fitting nc headers

Posted: Sun Nov 04, 2012 8:35 pm
by ansellpa
Seems to be the nc formula.
I have since learned mine has forged crank and rods as it is 09 model.
Might consider some cams down the track and see if it can rev harder.
Chris is setting my limit to 7500.

Then again, why mess with such a reliable stock engine?

Re: Fitting nc headers

Posted: Thu Nov 22, 2012 1:24 pm
by deanb90
imo the 4.1 is the best bang for buck, much better than the headers. But is the most expensive to get installed