crazy headers

Engines, Transmissions & Final Drive questions and answers

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shadow run
Driver
Posts: 51
Joined: Thu Oct 01, 2009 5:46 pm

Re: crazy headers

Postby shadow run » Tue Nov 22, 2011 10:59 pm

well even though i might not see much power gain, id get them made just for the look :mrgreen: im good friends with an exhaust fabricator so the cost isnt really a concern for me, more trying to make something which will actualy perform well, not just look nice.

Mine is a standard NA8 motor. I will be running the jenevey quad throttle set up, controlled by an adaptronic ECU. I was leaning towards the tomei poncams, but as i have a spare motor lying around, ive been toying with the idea of getting some porting and polishing done and maybe getting some new pistons to raise the compression a bit, then run some larger cams.

The car is dríven every day, but i get it out to the track fo club level stuff as much as i can

thanks again for all your input

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Matty
Racing Driver
Posts: 1652
Joined: Wed Apr 23, 2003 11:00 am
Vehicle: NB8A
Location: Melbourne
Contact:

Re: crazy headers

Postby Matty » Wed Nov 23, 2011 12:58 pm

There are downsides to such extractors, packaging being the main one. You have to fit them into the engine bay, keep them away from anything prone to heat failure, and you have to get a spanner onto the bolts to actually install them. Custom made, you'll probably have to mock them up in situ, remove, weld, and reinstall, so all of that process needs to be physically possible.

At the end of that very expensive exercise, you will probably end up with something that is no more beneficial than any of the off-the-shelf items on the market. Almost certainly true if you only have a mildly tuned engine, and even if you have a very highly tuned motor (massive cams and high compression), you probably wouldn't get the tuning of it right the first time.

Just my thoughts.

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wozzah1975
Fast Driver
Posts: 336
Joined: Sun Oct 30, 2011 11:39 pm

Re: crazy headers

Postby wozzah1975 » Fri Nov 25, 2011 5:54 pm

Ok, this is a picture of the ones I have used in the past. They are available for 1.6 and 1.8 engines (the shape and design is very similar for both).

The sizes are
Primaries 1 5/8"
Secondaries 1 3/4"
Outlet 2"

Image

For a budget off the shelf set they work pretty well, and they will cope with engine mods pretty well up to 180ish horsepower.

If anyone is interested I can supply these for $400 a set plus postage

Cheers
Woz
BP DOHC Mk1 Escort race car. Big Valve head, Cosworth Cams, Spool Rods, Nissan Pistons
www.facebook.com/pages/Warren-Heath-Per ... 4779879292

mx5gem
Driver
Posts: 46
Joined: Mon May 16, 2011 12:43 pm
Vehicle: NB8A
Location: By the beach

Re: crazy headers

Postby mx5gem » Sat Nov 26, 2011 2:47 pm

wozzah1975 wrote:Ok, this is a picture of the ones I have used in the past. They are available for 1.6 and 1.8 engines (the shape and design is very similar for both).

The sizes are
Primaries 1 5/8"
Secondaries 1 3/4"
Outlet 2"

For a budget off the shelf set they work pretty well, and they will cope with engine mods pretty well up to 180ish horsepower.

If anyone is interested I can supply these for $400 a set plus postage

Cheers
Woz


where are you located?

User avatar
wozzah1975
Fast Driver
Posts: 336
Joined: Sun Oct 30, 2011 11:39 pm

Re: crazy headers

Postby wozzah1975 » Sun Nov 27, 2011 11:58 am

mx5gem wrote:
wozzah1975 wrote:Ok, this is a picture of the ones I have used in the past. They are available for 1.6 and 1.8 engines (the shape and design is very similar for both).

The sizes are
Primaries 1 5/8"
Secondaries 1 3/4"
Outlet 2"

For a budget off the shelf set they work pretty well, and they will cope with engine mods pretty well up to 180ish horsepower.

If anyone is interested I can supply these for $400 a set plus postage

Cheers
Woz


where are you located?


PM sent

Cheers
Woz
BP DOHC Mk1 Escort race car. Big Valve head, Cosworth Cams, Spool Rods, Nissan Pistons
www.facebook.com/pages/Warren-Heath-Per ... 4779879292


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