Triple intake for Ford Six

B RON CO

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Hi, I just noticed a Triple Intake Kit from Speedway Motors Part # 560-5970. Maybe someone will go for it! Sorrry I don't know how to post a link. Gotta love it
 
They are still made - I run one. I believe Exeter Auto Supply in Exeter CA is the distributor of Offy intakes. They have the old school catalog available online.
 
Not familiar with either Holley # 1921-S or #2227-1A the Offy is listed to use in this app.
I think the 1921 is the 2 ends and the 222-1A is the center carb…
:unsure::
Not seen on Holley site or on fleebay either.
1904 too expensive…
can U use 3 of the same carbs?
How bout 3 sm YFs?
 
Any thoughts on designing a completely new tri-power intake that allows better or different carb selections? How about a finned oval breather that covers all 3 carbs?
 
I've been contemplating it. When I put my new head on, i'm going to have the old one to play with. I've been thinking about a triple DCOE setup, treating it like port to port. I would imagine that once a pattern for that is laid out, a port on port hilborn type setup should be easy enough to derive. Or vice versa....

Also came across an interesting setup on a C%$>y today on ebay. 5 strombergs on an inline. A little crazy, but it got me thinking.
 
cr_bobcat":2b0yx2uh said:
I've been contemplating it. When I put my new head on, i'm going to have the old one to play with. I've been thinking about a triple DCOE setup, treating it like port to port. I would imagine that once a pattern for that is laid out, a port on port hilborn type setup should be easy enough to derive. Or vice versa....

Also came across an interesting setup on a C%$>y today on ebay. 5 strombergs on an inline. A little crazy, but it got me thinking.

I always go back to Ak Millers horse trade between 2-bbl direct mount, Bosch style K jetronic or D or L jectronic Fuel Injection, his 5970 Offy, and his earlier Kehin Four carb, Twin SU HD6, and his later Turbo versions with one 2 or 4bbl carb.

Ultimately, its about how it pacakges.


I've done all three (Triple Downdraft Holleys, single 4-bbl, single 2-bbl, and I'm now set on twin 2-bbl Holleys using a Lincs 200 verses Ak Miller combination). Its a drill four holes, and bolt on your carbs deal. Like the Kehin system, but with common 2300 series 2-bbl Holey carbs.


UntitledMontageofFourStubweldedoninletstosmallloghead200.jpg


I think that packages best without up setting the air con, spring tower braces, and all the other stuff that always the gets in the way.


I love independent runner, but it doesn't pacakge good.


If you go over the postsI made on Ak Miller set ups, you can see that he did everything, but after 1975, he came back to Offenhausers, turbos and 2 and 4'bbl carbs..he looked like he got into more simple stuff, and passed by the IR set ups. My only guess is Al knew something we didn't...
 
Reading some of th Ak Miller stuff is what got me into this predicament. :-D

To be honest, I've always dreamed of owning some carb porn. Triple side drafts are pretty filthy. I like those old Strombergs though too, which was how I found that 5-carb setup.

I'm kicking around the idea of milling off the log, then using plexiglass and pvc pipe to mock something up. At which point I can hand it over to someone and say "build me this outta something that won't melt. I was inspired by the feller on here using cardboard tubing to mock up his own stainless steel extractors. Plexi glass is easy enough to cut, file, and trim and let's me see exactly how well things are mating. Relatively cheap too. No need for too many fancy machines beyond what I already have.
 
There are a few people on this site who run the Offy. I know there is someone with a 67 or 68 mustang coupe over in Europe who uses it. The falcon 6 handbook talks about it on a page or two.

IIRC you should be able to run 3 of the same carb if you want. Gene2dr does - he might be able to give you some more color if he still peruses the site. I know he's been busy last couple years learning how to fly and has a new business partner.

There are two different kits depending on if you have the early head with the small volume log intake (round) or the later large volume log intake (flat). NOTE WELL: If you go for a later head for the better intake volume you need one with the FLAT log, not the hexagonal intake log. The link posted is for the later head.

I'm not sure about the kit for the early heads, but the one for the later head requires machining the intake - not just drilling holes for the extra carbs - to further flatten the surface for a good mating surface.

The other option you could do if you wanted multiple carbs would be to go with an OZ-250 head and get the triple DCOE kit from australia. I don't know if the AU intakes work with the CI aluminum head, but if it does that would be another path as well.
 
"…finned oval …"
a la Cobra six on here?

I C the best figures from a direct mount 1 motorcycle carb per cyl. (wasn't it Makuni?).
The linkage must be the trick, don't think they;re progressive - but would B "all equal".?
 
australian tripple SU carbs on a 250
australian lynx manifold and welded plate to atrimmed log.
log cut away leaving the std exhaust ports/runners

no longer cast - probably since the 70's

not mine

DSC_2153%20Medium.jpg


carbies.jpg




std flanged extractors/headers :
DSC_4174%20Medium.jpg

in%203%20Medium.jpg


all installed in this 1974 XB falcon:
20160709_071228%20Medium.jpg


the lynx manifold come up on australian ebay from time to time - i have picked up one of these tripple SU ones -and a manifold cast for tripple DCOE's- will see if i can get a photo of it
 
Thanks so much 4 da pic!

what's below the SU - a fuel line & filter?

I used ta C alot of those carbs on the European vehicles. Don't remember that part or the lower 1/4 of them anyway. I believe a buddy had triples on a (actually 4) '30s race car with a flathead 8 that ran near here at "Riverside". Where were/are those carbs made?

The lynx? can't six pieces of pipe replicate that? Cut diagonal, furnace welded? OzFord made them?
 
Nice...


Skinner Union HD6's or 8's are 1.75 or 2" carbs, and are English made. Found on early triple carb 265 hp gross 3.8 and 4.2 XK-E's, all six cylinder Aston Martin DB's till about 1968 where they went up to about 280 hp gross.

Austin Morris and other British Leyland stuff, including British market 3.4 XJ-6 Jags right up till 1986 used them. They were last used on orginal Minis and the Montego and Maestro till about 1996 or so. As long as you replace the wearing parts like the main jet, re-set the dashpot drop in spec, use the right grade oil, and use good quality parts that cope with modern fuels and take car of throttle balance, these carbs work very well. Spring rate and needle selection is known to a fine degree, and there are metric versions with swing needles, idle fuel pressure compensators with bimetallic strips, and some other throttle leaning devices. They are very good devices.


https://en.wikipedia.org/wiki/SU_Carburettor


Motorcylce carbs use the same concept, Constant Venturi is similar. Honda transferred it to its 1983 to 1986 production Prelude and some Civic and CRX cars with success.



Ford copied the concept in the 1977 to 1996 Motorcraft Variable Venturi 1 and 2 bbl carbs, which were different, and ultimately sucessfull. They removed the dashpot from easy acess, which solved people screing around with them. Atarting from 1981 to about 1996, Toyota, Mitsubishi, Proton and Suzuki, in the Aisan carb equiped 1.4 to 1.6 liter passenger cars, forklifts, and Four wheel drives. Ultimatley, it failed, but its still around and can be made to work. Again, people screwed around with it without understanding the basics.


Lynx were the most progressive supplier of performance carbs and manifolds in Australia. Graeme Nicholls was a great merchandizer, and nearly everything they sold had a commerical focus, and worked pretty good. The adaptor was a fact of life, of the nearly 1.5 million cast iron headed 144 to 250 Fords made from 1960 to 1976 in Falcons, Cortinas and Transit trucks, only about 12000 had 2V 250 M code engines with detachable manifolds. Up to that time, most oval track guys used the Lynx or Blattman adaptor, because it was easy to grind off the intake, easy to weld the plate on, and cheap to buy or steal the carbs of an Austin Tasmin and you could get the cast alloy Lynx manifold farly cheep, and they went very fast, without a lot of cost.
 
It would be pretty easy for me to make a similar intake like the Lynx if there is much interest in one.
 
Close up


Bad news is that you Stateside is that yopu'll most likely have to alter the spring tower braces to fit it on most fre 1970 X chassis Fords. The engine bays from 1966 onwards for Aussie Falcons are 1966-1970 Fairlane/Torino tooled, and then got even wider with the later ones.


The original Bob Blattman circuit racer Conversion in an XL Falcon (roundbody) used on shallow deck engines (144/170/200, and the taller 188/221) and it had a 5 degree draft angle to clear the spring tower brace.

http://autopics.com.au/65021-bob-blattm ... ce-ruting/


They fit on later cars okay. Mavericks, Torinos, Grandas, Monarchs. Early Mustangs and round bodies, propably not.

https://www.youtube.com/watch?v=wUHOjdEZJvY


viewtopic.php?f=3&t=71291

Lynx3.jpg


Lynx6.jpg


Lynx2.jpg


Lynx1.jpg


Lynx8.jpg


Lynx9.jpg


Lynx10.jpg




But they are hard to tune compared to a 4-bbl a 2-bbl intake, or stock 2v

https://www.youtube.com/watch?v=GZbUC6zU3MI

https://www.youtube.com/watch?v=d5VciYNri3o
 
chad":2lzoqy53 said:
Thanks so much 4 da pic!

what's below the SU - a fuel line & filter?

I used ta C alot of those carbs on the European vehicles. Don't remember that part or the lower 1/4 of them anyway. I believe a buddy had triples on a (actually 4) '30s race car with a flathead 8 that ran near here at "Riverside". Where were/are those carbs made?

The lynx? can't six pieces of pipe replicate that? Cut diagonal, furnace welded? OzFord made them?


The deal below the SU is the float bowl- the H and HS series (The ones shown are H series) use an external float chamber. There is a small tube running from the bottom of the float bowl to the bottom of the carb. The later HIF (integrated float) type had a float chamber integrated into the carb housing.

SU's were manufactured in the UK, and in Japan under license by Hitatchi, and were used on Datsun 240Z and performance 510'sin the US. SU's were usedon Volvo, Triumph, MG, Jaguar, Sunbeam, just about any UK based manufacturers. SU's are still made by Burlen fuel systems in the UK

On the MGExperiemce website, a guy has swapped a 200 inch six into an MGB, and fabricated (welded) a set of manifolds that screw to the cast in log manifold.I am planning a similar swap, using the Classic Inlines aluminum head, and I'm building a manifold to use 6 Kawasaki 1100 bike carbs.

SU's aren't difficult to tune,just different because it's a different design concept. Unlike most carbs people in the US are familiar with, which have a fixed venturi size, the venturi changes size based on throttle position and load. Like I said, different
 
note the manifold shown below in colour 'redline' is a crossflow one .

blatmans is a pre crossflow/log manifold.


magazine not understanding the difference -when printing the stuff

xctasy":4dy9tlcx said:
The Bob Blattman XL FALCON 200 TRIPLE h4 SU CARB KIT, CIRCA 1965

Bob_Blattman_Tripple_XL_Falcon_200_1963_001.jpg

Bob_Blattman_Tripple_XL_Falcon_200_1963_002.jpg
 
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