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Sealed Air Box for Impco 300A 4.2 Ltr GQ

Tech Talk for Nissan owners.

Moderators: toaddog, V8Patrol

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Posts: 377
Joined: Mon Mar 20, 2006 5:52 pm
Location: Geelong

Sealed Air Box for Impco 300A 4.2 Ltr GQ

Post by tj81 »

Ive just made a nice new 3" stainless snorkel for the Mav, but its useless unless i can hook it up to a sealed air box. My current one is an open element type, and would a a bit of work to seal it up.

Anyone have any suggestions for finding or making one of these.

I know you can get them, i have seen pictures of them etc on cars in this and other forums.

Called various wreckers in VIC and SA, none available. Tried various Gas Conversion Centres in the Geelong area, none available.

Is there one i can modify easily?
92 LWB Ford Maverick 4.2, Dual Fuel.

99 GU ST 4.2 Turbo Diesel, Non Intercooled, Tigerz11 w/synthetic, 35"' Bighorns, ARB Compressor, Snorkel.
Posts: 49
Joined: Sun May 07, 2006 7:40 pm
Location: Hurstbridge, Melbourne

Post by dogeatdog01 »

Gday,
I believe Mill Welding make such a part. Google it and give them a call.
I think it was around $250. Located in Victoria
1991 Nissan Patrol SWB 3" King Springs / Rancho 9000X, 2" Body Lift, Cheezy Winch Bar, Warn M8000 winch, Drop Boxes, 35" Baja Claws
Posts: 377
Joined: Mon Mar 20, 2006 5:52 pm
Location: Geelong

Post by tj81 »

Cheers,

Ill give them a look.
92 LWB Ford Maverick 4.2, Dual Fuel.

99 GU ST 4.2 Turbo Diesel, Non Intercooled, Tigerz11 w/synthetic, 35"' Bighorns, ARB Compressor, Snorkel.
Posts: 792
Joined: Wed Feb 16, 2005 7:20 pm
Location: Acting the goat.

Post by BowTieGQ »

And then post pics........please.
[quote="bazooked"]can i use a mate to position while i screw? :twisted:[/quote]
Posts: 343
Joined: Fri Jun 18, 2004 3:25 pm
Location: Melbourne

Post by EricB »

I was thinking about mine for ages. Wasn’t sure how to put it together.

I decided on using a cheap cooking pot from Kmart and a few parts from Bunnings :lol:

Cut the bottom of the pot off at a height of the filter.
Cut a hole in the lid of the pot to use at the base. (I should have used the lid as the top) but it still worked out ok.

Then I used some 3" Gal pipe and connectors for guttering from bunnings.

These pics show this and later I added a 3" 90deg angle and then 50cm of Gal tube to go over the engine and extractors. From there I used purple pig tubing to connect to the snorkel. Don’t forget the silicone.

Cost about $50 in total and a better seal than any I saw for a gas system.

Pics

http://web.aanet.com.au/EricsHomePage/4 ... ntake1.jpg

http://web.aanet.com.au/EricsHomePage/4 ... ntake2.jpg



Eric
2000 GU II 4.2TD
Posts: 295
Joined: Sun Sep 24, 2006 5:34 pm

Post by azzad »

nice work eric, always good to see someone thinking outside the box.
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RN
A speed camera would have prevented that!
Posts: 15822
Joined: Sat Feb 05, 2005 3:46 pm
Location: Check your six.

Post by RN »

EricB wrote:I was thinking about mine for ages. Wasn’t sure how to put it together.

I decided on using a cheap cooking pot from Kmart and a few parts from Bunnings :lol:

Cut the bottom of the pot off at a height of the filter.
Cut a hole in the lid of the pot to use at the base. (I should have used the lid as the top) but it still worked out ok.

Then I used some 3" Gal pipe and connectors for guttering from bunnings.

These pics show this and later I added a 3" 90deg angle and then 50cm of Gal tube to go over the engine and extractors. From there I used purple pig tubing to connect to the snorkel. Don’t forget the silicone.

Cost about $50 in total and a better seal than any I saw for a gas system.

Pics

http://web.aanet.com.au/EricsHomePage/4 ... ntake1.jpg

http://web.aanet.com.au/EricsHomePage/4 ... ntake2.jpg



Eric
Nice look. I too have a carby Mav but the gas kit they used has some fairly intrusive bracketting that supports the Impco unit so I would have to be some mods on mine to clear up the area around the unit.

What did you use for sealing the base where you cut in?

Also did this cut down on the intake noise that these carbies make when under acceleration?
I am the Nightrider! I am the chosen one. The mighty hand of vengeance, sent down to strike the unroadworthy!
Posts: 377
Joined: Mon Mar 20, 2006 5:52 pm
Location: Geelong

Post by tj81 »

Top work eric !
92 LWB Ford Maverick 4.2, Dual Fuel.

99 GU ST 4.2 Turbo Diesel, Non Intercooled, Tigerz11 w/synthetic, 35"' Bighorns, ARB Compressor, Snorkel.
Posts: 343
Joined: Fri Jun 18, 2004 3:25 pm
Location: Melbourne

Post by EricB »

azzad wrote:nice work eric, always good to see someone thinking outside the box.
You mean outside the Pot ;)

No noise when accelerating but does whistle a little as I start it since I put the snorkel on a few weeks ago.

I also had it dyno tuned when I had the Gas put on and made the cover for the carby. My tuner said it worked well and was not too restrictive at all.

My Gas carb has a flat ring\base on the bottom where the air filter sits.
You would normally put the top on it and have the ari filter exposed.

When I cut the hole on the lid I put it on the carbi. Then the air filter on top of it. The new top (base of the pot) then gets screwed on with the gas carby screws and it all good. Then I just run some silicone around the join.

If I did it again I would put the lid of the pot on top to make it easier to get into without moving the pipe work.

http://web.aanet.com.au/EricsHomePage/4 ... inebay.JPG

Pic Finished with snorkel
2000 GU II 4.2TD
Posts: 127
Joined: Wed May 02, 2007 12:08 am
Location: west gippsland

HOWD YA GO

Post by narns1mav »

JUST wondering how ya went as i need one also
Posts: 377
Joined: Mon Mar 20, 2006 5:52 pm
Location: Geelong

Post by tj81 »

No worries.

Used some of Erics brilliance and used some parts from bunnings.

Got hold of a 3' bit round drain connector, modded my current airbox , sealed it all up, added a band of metal around it. Moulded the circular bit to it, ran plastiflex from the snorlel to the air box.

will get pics if i get a chance
92 LWB Ford Maverick 4.2, Dual Fuel.

99 GU ST 4.2 Turbo Diesel, Non Intercooled, Tigerz11 w/synthetic, 35"' Bighorns, ARB Compressor, Snorkel.
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