Quote:
That made me think about my chrysler 2.2/2.5 4 cylinder custom intakes. 
Do tell...!
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| Manifolds, adapters and the like - who will be interested https://www.slantsix.org/forum/viewtopic.php?t=25876 |
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| Author: | SlantSixDan [ Fri Nov 16, 2007 9:25 pm ] |
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Quote:
That made me think about my chrysler 2.2/2.5 4 cylinder custom intakes.
Do tell...!
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| Author: | 68barracuda [ Fri Nov 16, 2007 9:45 pm ] |
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Quote: I agree it's deceptive but the design of intakes you showed in that photos are stunningly awesome ideas.
Hi Wizard,That made me think about my chrysler 2.2/2.5 4 cylinder custom intakes. Smile Cheers, Wizard As they say Always something new out of Africa - well in this case these guys are close to 30 years old - but it is now is a good time to show the world what we have done while we were behind the Boerewors curtain!! of sanctions I mean we Build tanks - ok MODIFIED the British Centurion until it was so unrecognisable we had to build new hulls and we were able shoot the hell out the Russian T 72s in Angola. We are the ONLY country Outside Europe, Brittain, US and Russia who build and developed an dedicated attack helicopter the Rooivalk - then there is the G6, and G5 Howitzers witch sadly we sold to Sadam to get oil in those days. The Cheetah mod on the Mirage - later new airframes were built for the C7 variant The sad thing is that our goverment goes to europe for trainers - the pilatus - we had more advanced composite material trainers developed - but it was not in the politicians back pocket interest - so the local boys got shot in the foot Due to a massive political blunder by old Thabo we lost a deal in selling 50 Rooivlak helicopters to Mallazia. We have the technology and the know how....ok most of the know how now lives in canada, Oz, and New Zealand but still.... Unfortunately we have the gravy train politicians as well they all scored out off the arms deal with Europe  But we are here to talk about /6 and RSA was and is slant country in a big way The local chaps are putting down money for their manifold, header and cam combo's what fun  Most guys want the 2 x2 with wich nothing more can br done much - we will just check with modern kit if all is as well as it looks The 4 bbl will take same work nuff ranting I am listening for suggestions chaps
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| Author: | Kidd [ Fri Nov 16, 2007 10:01 pm ] |
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I do like the 4 bbl intake.....but the inside runners look like the inside curve may hinder flow......but, I would experiment with one. Have you looked into production of these? and maybe a cost? Andrew |
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| Author: | 68barracuda [ Fri Nov 16, 2007 10:07 pm ] |
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Quote: I do like the 4 bbl intake.....but the inside runners look like the inside curve may hinder flow......but, I would experiment with one. Have you looked into production of these? and maybe a cost?
Hi Andrew If you read throught he whole threa - scuse me if you did - Yes that is the plan Will be cheaper than clifford!!! I am setting up a sideline business where I will be replicating castings where and when I can get my hands on them - and apply modern tech to sort out old problems This include lenses, door handles etc. |
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| Author: | emsvitil [ Fri Nov 16, 2007 11:28 pm ] |
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Quote:
You already know my enthusiastic reaction, but for the benefit of those who haven't sat in on our extended discussion: I think that 3+3 four barrel intake is either going to work great or be a total pig. Probably not in between, and I cannot guess which it'll be. And that's gotta be one of the slickest twin-carb intakes I've seen for the slant-6!
Found the picture........I think the twin carb manifold would work great. The weird 4 bbl has problems.... (think like a air and fuel molecule) Cylinders 1 & 6 would work great. Cylinders 2 & 5 ok, .. 90 degree airflow turn Cylinders 3 & 4 suck, 135 degree airflow turn... |
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| Author: | Matt Cramer [ Sat Nov 17, 2007 5:50 am ] |
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Quote:
Hi Mat,
Ok, I somehow thought the discussion had happened out on the forum and I'd missed it. I have been quietly communicating with Dan - and didn't want to say much before I was certain that I could duplicate these manifolds I do agree - that large plenum mounting pad ...... could it be that they had a supercharger in mind of some sort - it just dawned upon me I am taking notes this side - and provisioning for injectors is a good idea Specially with emission regs getting tighter - even over here - efi might in the end be the only way to go to keep your slant on the road Are you saying these were some Chrysler prototypes that had never made it into production? Interesting! I mostly got into EFI not for emissions (in the US, a 1966 model year car would never have to meet more than 1966 standards) but because I got into turbos. EFI supports them a lot better. If the plenum is large enough, this might make a better EFI manifold than the Clifford short manifold like what I'm using now. |
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| Author: | SlantSixDan [ Sat Nov 17, 2007 6:40 am ] |
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Quote:
The weird 4 bbl has problems.... (think like a air and fuel molecule)
Maybe and maybe not...with the common 4bbl intakes from Offy, Clifford, and Weiand, 3 & 4 (and to a lesser extent, 2 & 5) have a much shorter and more direct path to the carb than 1 & 6, which to some degree undoes the work originally done on the \6 intake to avoid the mixture distribution problems caused by other makes' "log" type intakes. Cylinders 1 & 6 would work great. Cylinders 2 & 5 ok, .. 90 degree airflow turn Cylinders 3 & 4 suck, 135 degree airflow turn... Me, I'm sticking by my earlier opinion: This weird 4bbl manifold will either work very poorly or very well, depending on interior design features (subplenums, flow directors, etc.) we cannot see from the outside. OK, the path from carb to 3 & 4 is less direct, but it's also shorter. Perhaps shorter + less direct is more or less equivalent to longer + more direct...we're just gonna have to wait and see. Flow test results should be interesting. |
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| Author: | HyperValiant [ Sat Nov 17, 2007 7:13 am ] |
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If you are going to reproduce these I would be interested in one of each ans for some reason I dont think that the 4bbl will be as bad as everyone thinks ,alot has to do with what the interior looks like. HyperValiant |
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| Author: | dakight [ Sat Nov 17, 2007 7:16 am ] |
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Flow test results will certainly reveal a lot about the manifold and if the runners are all more or less equal in flow characteristics it might be a great EFI manifold provided the injectors are mounted near the ports. Aside from raw flow numbers though, is the flow velocity in the runners, especially at sharp bends. I'll preface what I'm about to say with the disclaimer that I know little about air-fuel mixture physics but I do know a little about the way fluids and fluid mixtures behave; not much, but a little. It seems to me that if the air fuel mixture from a carburetor or TBI is forced to make a sharp bend that the fuel droplets will be forced outward and tend to seperate from the air stream to wet the runner surface rather than stay in suspension. Further, the seperated fuel will tend to accumulate in the plenum and not enter the runner at all. While total flow may be similar across all six runners, my gut tells me that the 2 innermost runners will suffer fuel distribution problems in carbureted applications. I think it will run lean on the innermost runners and be progressively richer toward the outside. |
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| Author: | SlantSixDan [ Sat Nov 17, 2007 7:52 am ] |
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We're both basing our comments on different but equally valid theory. Which effect will win out (or whether they'll exactly balance each other) will remain to be seen. I guess this what we're doing is "flow-bench racing"! 
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| Author: | Joshie225 [ Sat Nov 17, 2007 10:20 am ] |
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Flow bench racing. That's a good one Dan. I hope the 4 bbl manifold can be wet flowed so we know where the fuel and the air goes. |
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| Author: | 68barracuda [ Sat Nov 17, 2007 11:07 am ] |
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Hi all Update time Yes they will be wet flowed Very Happy The 2 x 2 CNC work will be completed this weekend Then the 4BBL....... THE 4 bbl might need to be modified for 3 and 4 BUT lets see what the benches say in January I need all the input I can get please - this is not a pie in the sky project - before I approached Dan I was playing around with ideas for quite a while, and before that I made all my Chrysler cronies sick with my insistent nagging about these manifolds My dad had such a setup in the middle 80's - the 2 x2 and it works - apparently some of the ultra HP ones twisted their prop shafts frequently in police hands, stories about cracked TF 904's are also floating around So I am in this for the long run no snake oil over here gents - just true hemi orange blood on a on a tilted over 225 |
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| Author: | 68barracuda [ Sat Nov 17, 2007 11:13 am ] |
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Oh yes dan you were right about the spacer I need 5 inches to do this - the machining of such a spacer will ruin my manifold project - 
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| Author: | Wizard [ Sat Nov 17, 2007 12:35 pm ] |
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There is slightly complex intake that chrysler produced for the late 4.0L instead of classic long branch log with sharp 90 turns. The 3 & 4 starts at the plenum and gently loops over the branch and reverse curves back together and straight to the 3 & 4. Outer 4 cylinders got long curving 90 degrees. It was made to keep runner lengths & flows equal and is used for injection. http://blog.hemmings.com/wp-content/upl ... esized.jpg BMW have done this for decades. Keep us updated. Is there any issue using carb on this style of intake with runners that gently runs over the bottom runners to join the inner cylinders? Oh, if we have 2 level floors, one higher with small smooth lip for any fuel wetting to run along into the 3 & 4 runner, upper floor steps down to lower floor is for the outer four cylinders? And kept heated by the coolant using flat gasketing flange on bottom of plenum. Cheers, Wizard |
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| Author: | 68barracuda [ Sat Nov 17, 2007 11:14 pm ] |
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Quote: Is there any issue using carb on this style of intake with runners that gently runs over the bottom runners to join the inner cylinders?
OK I am going out on a limb here - DAN if you cut it you don't get a manifold Oh, if we have 2 level floors, one higher with small smooth lip for any fuel wetting to run along into the 3 & 4 runner, upper floor steps down to lower floor is for the outer four cylinders? And kept heated by the coolant using flat gasketing flange on bottom of plenum.  I principal no - i am great one for experimenting - but in practice you can use a wet - carb - manifold for efi, but the same is not always true about dry - efi - manifolds. I do know that local BMW fans quite often used to replace the efi with carbs on their older cars - but the question remains was it an original efi manifold or not? With usual efi designs, and you should see some of the stuff the korean's are using - talk about spaghetti runners - you wold have issues with fuel pooling, bends causing they fuel to separate outwards due to centrifugal forces. Wet manifold often have a sawtooth design in the outer curve with little ramps to force fuel back into the air stream with the turbulence this creates - dry manifold are quite often as smooth as a mirror But back to your idea - it might work give it a whirl - would suggest a carb spacer to help with atomization etc. Looks like a good design - do you have pics of other views and the plenum inside? It is difficult to judge if one do not have a sample in hand |
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