29 replies to this topic

[looznugtr]

Has anyone ever ran 6-1 headers on a lc torana.

Im building my motor using the old johno web site with the as my guide.

 

The Scream - 250hp+ (for a quicker revving variation on this one try a blue 173 block bored for 186 pistons and 3" crank)
Blue/Black 202 block
Blue/Black 3.25" crank
Blue/black rods
11:1 - 11.5:1 compression
Professionally ported 12 port head w 1.75" and 1.48" valves, or ported YellaTerra 12 port
Fabricated tuned-length IR manifold w/ six Mikuni HSR42s
245 to 250deg @ 0.050" 0.5" to 0.550" lift solid cam
Shaft mount roller rockers
HEI or better ignition (or better still, crank triggered)
1.625" x 28" primary pipe extractors with a single 3" x 15" collector

 

I have found this to start my header building.

Mission impossible........You think it will work? What you guys think

[N/A-PWR]

Hi Matthew,

I did hear in the past, that the tuned Exhaust was the way to go, so in this case, you would need all pipes the same length before the collector. Dave I

[N/A-PWR]

you could go a bit further DJ hey

[looznugtr]

The collector could stir higher and a 3 inch could pass no worries. Iv had 6 pipes to a turbo and then a dump pipe down low before.

[N/A-PWR]

Very Nice Mathew,

any pictires

[warrenm]

I know these are not 6 into 1 but it may give you some insight as to what may be involved into fitting a large collector beside a 6 in an LC/LJ. To fit these beside the motor I'm unable to use a winged sump. Not saying it can't be done, but it will be very busy between the chassis rail & motor.

 Headers (600 x 436).jpg   55.32K   14 downloads

[Dave6179]

I made a set for my HJ. Sounded totally different... read awsome, but created a LOT of heat, even after wrapping them! I swapped for a set of two piece PaceMakers, and the performance was almost the same, 6-1 had slightly more down low.

My collector was basically 3 on 3, as in flat, not six in a circle, and I made merge points too. I also used the firing order, 153 on top left to right, the 624 on the bottom, right to left, to give it some swirl. And the pipes were all less than a 1/4 inch different in length. No, I didn't take any pics!

They are still screwed to the garage wall.

[Dave6179]

Yeh, lotsa room certainly helps! I kept the 'pack' as tight as possible though, didn't want it looking like a plumbers nightmare!

[lakeside]

My 202 made 300hp with these pipes. In street trim it ran 12.7@109mph in a lc gtr

[looznugtr]

What's the primary's on those headers and what make? I'm assuming 9 port head?

[looznugtr]

What's the primary's on those headers and what make? I'm assuming 9 port head?

[lakeside]

Matt, they are a custom set for a 9port. I'm not sure on the sizes but a lot bigger than off the self.

[N/A-PWR]

here you go:-

 

http://www.oldjohnno.id.au/page34.html

 

and these below are on eBay now at $435 but Primaries are only 1 1/2" instead of 1 5/8":-

 

http://www.ebay.com....S-/251319650509

Edited by TORYPOWER, 29 April 2014 - 09:31 PM.

[N/A-PWR]

and these are what I used, and I had huge pick-up ( Spooling ):-

 

http://www.ebay.com....-/171295873354?

 

but, all this needs a good breathing motor to go with them. Dave I

the second bit, curved around the back of the M22 Gearbox

and was very loud, lovely pipes, and these are 6 into 1 pipes too.

 

I also ran a Turbo smooth 'S' bend muffler

Edited by TORYPOWER, 29 April 2014 - 09:44 PM.

[N/A-PWR]

OK then,

the Hurricane's are ( 3 into 1 + 3 into 1 )  and 2 into 1

thank's for correcting me DJ

[N/A-PWR]

 Great Find Ryan,

was looking at Hemi's myself and thinking why is their stuff different. Dave I

[Dave6179]

I've just refitted mine. Thought the PMs had sprung a leak... turned out the gasket was the one without the port bridge section. Both ports leaking.

The 6-1 feel so much more refined, easier to rev, smoother from idle.

 

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[warrenm]

Nice pipes. Any particular reason for the short collector?