New Cold Air Box for the Coupe

Make it go fast! Kick it up a notch. Post tips in here.
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sptcoupe
Posts: 987
Joined: Tue Mar 17, 2009 9:25 pm
Your car is a: 1972 124 Sport Coupe

New Cold Air Box for the Coupe

Post by sptcoupe »

Here is the cold air box on the coupe!

Made from composite (light weight) materials, takes air from in front of the radiator with a 3” tube, passes through a modified filter box and air filter from a BMW 850, feeds air into the side and middle of the box, mid-way between and above the horns, has the PCV hose feeding into the air tube upstream of the air filter so it provides vacuum, cleans the air and cools it before entering the box, and has a one way valve that will open to relieve pressure in the box in the event of the odd cold start backfire.

It also uses every bit of available space while still allowing access to the idle mixture screws and inter-carb linkage with the box mounted, and BEST of all, it really quiets the carbs down incredibly well, with no perceivable loss in power! Had it to 115 MPH indicated with no problem, running at 6800 rpms in 5th. And it runs as smooth as can be,and I really like the combined exhaust note and carb wail at speed!

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Now to the dyno to finish dialing it in. Really happy with the results, and kudos to Jason MIller of MIllers Mule on a great design and handiwork. If you are running dual IDFs on your motor – you want one of these one-of-a-kind boxes!

Jeff
WYSpider

Re: New Cold Air Box for the Coupe

Post by WYSpider »

Sweet, dyno will tell all. :D
Daniel

Re: New Cold Air Box for the Coupe

Post by Daniel »

Looks real good and the Abarth Valve covers look amazing !
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thechadzone
Posts: 220
Joined: Sun Feb 03, 2008 3:31 pm
Your car is a: 1969 Fiat 124AS Spider
Location: Eugene, Oregon

Re: New Cold Air Box for the Coupe

Post by thechadzone »

Damn nice! I look forward to dyno results. Would you mind posting a few more engine shots?
sptcoupe
Posts: 987
Joined: Tue Mar 17, 2009 9:25 pm
Your car is a: 1972 124 Sport Coupe

Re: New Cold Air Box for the Coupe

Post by sptcoupe »

This is all I have right now.

[img][IMG]http://i721.photobucket.com/albums/ww21 ... 33box6.jpg[/img][/img]

[img][IMG]http://i721.photobucket.com/albums/ww21 ... 32box4.jpg[/img][/img]
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kmead
Posts: 1069
Joined: Sat Aug 02, 2008 9:24 pm
Your car is a: 1969 850 SC 1970 124 SC 85 X19
Location: Grand Rapids, MI

Re: New Cold Air Box for the Coupe

Post by kmead »

Will you be driving it to Freak Out again?

Looks great. Fine work and development by you and Jason.

Karl
Karl

1969 Fiat 850 Sports Coupe
1970 Fiat 124 Sports Coupe
1985 Bertone X1/9
sptcoupe
Posts: 987
Joined: Tue Mar 17, 2009 9:25 pm
Your car is a: 1972 124 Sport Coupe

Re: New Cold Air Box for the Coupe

Post by sptcoupe »

I think the drive to Charlottesvilles is a day too long for our Houston club, especially in the heat of summer. If we get a caravan together, I'll do the trip, as my first FFO was the 1992 meeting at Charlottesville. I still have the trophy the coupe won at that meet! The guys at IAP did a great job.
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kmead
Posts: 1069
Joined: Sat Aug 02, 2008 9:24 pm
Your car is a: 1969 850 SC 1970 124 SC 85 X19
Location: Grand Rapids, MI

Re: New Cold Air Box for the Coupe

Post by kmead »

It deserves another, I really enjoyed seeing it in North Carolina two years ago. I can understand the iron butt issue. Presumably with carbs it will be an easier ride next time.

Karl
Karl

1969 Fiat 850 Sports Coupe
1970 Fiat 124 Sports Coupe
1985 Bertone X1/9
pastaroni34

Re: New Cold Air Box for the Coupe

Post by pastaroni34 »

Here's the start of a write-up on the design, construction, and installation of Jeff's airbox: Fiat Coupe Weber Airbox (Part 1)
coise

Re: New Cold Air Box for the Coupe

Post by coise »

This is really nice. Jason, are you going to make some more and will it fit a 124 spider with dual IDF ?
Thanks
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kmead
Posts: 1069
Joined: Sat Aug 02, 2008 9:24 pm
Your car is a: 1969 850 SC 1970 124 SC 85 X19
Location: Grand Rapids, MI

Re: New Cold Air Box for the Coupe

Post by kmead »

Nice write up. Looking forward to part 2

Karl
Karl

1969 Fiat 850 Sports Coupe
1970 Fiat 124 Sports Coupe
1985 Bertone X1/9
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ga.spyder
Posts: 3478
Joined: Tue Nov 06, 2007 7:19 pm
Your car is a: 1982 Spider 2000
Location: Blairsville ,Ga.

Re: New Cold Air Box for the Coupe

Post by ga.spyder »

Really nice work Jeff and Jason! It looks like it could be a stock item,it fits so well.I really hope you can make it to FFO. The venue should be great!
Craig Nelson

1982 Spider 2000...pride and joy
1981 Fiat X1/9..gone but not forgotten
1976 124 Spider..the self-healer
2001 BMW 328ci daily driver and track car
Fling It Around Turns !
pastaroni34

Re: New Cold Air Box for the Coupe

Post by pastaroni34 »

It is something I plan to put into production. I need to check if the spacing between the webers is the same from the manifold on the coupe and the original waffle manifold. That shouldn't make much of a difference on the airbox, other than machining the baseplate to account for the difference.

The spider will be very similar, the airbox portion will probably be identical. The filterbox, however, will have to be a little different as there is a little less room, and the snorkel arrangement will have to change.

In production though, I expect the box to be much lighter, probably 70% as heavy as the prototype.
spiderrey
Posts: 2623
Joined: Sat Jan 28, 2006 2:08 pm
Your car is a: 70 124 spider-74x19-03 ranger edge
Location: San Dimas, Ca

Re: New Cold Air Box for the Coupe

Post by spiderrey »

Jason, very nice work.
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engineerted
Posts: 531
Joined: Tue Feb 21, 2006 9:57 pm
Your car is a: 1974 124 spider
Location: Farmington Hills, MI

Re: New Cold Air Box for the Coupe

Post by engineerted »

Jason,

Nice work! What is the clearance between the top of the box and the weber air horns? Or, should I say, what is the max length air horn you could fit under there?
Ted
1978 124 Spider, Complete Restoration
1974 Fiat 124 F Production Race car
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