Would it be easier to use the SDS style injector holders so you don't need a fuel rail? Your only option for mounting them would be outboard aimed down the runners though.
How does the machine plug at the end of the log compare to the throttle opening diameter? Would something as simple as tapping the ends for a pipe thread elbow allow you to triple up the throttle bodies, one in the center and one on each end?
oldopelguy wrote:
How does the machine plug at the end of the log compare to the throttle opening diameter? Would something as simple as tapping the ends for a pipe thread elbow allow you to triple up the throttle bodies, one in the center and one on each end?
GENIUS
Though I'd still probably run it draw through and wet for simplicities sake.
Well if that is the plan just mount three TBI's to an Offenhauser manifold adapter plate
Plumbing might look a little ridiculous when all is done though.
In reply to Ditchdigger:
You wouldn't gain much, then you just have 3 little holes going into one little hole in the log, rather than 3 holes DIRECTLY into the log.
kreb wrote:
Sorry for what may be a stupid question, but how is the wastegate going to work in a draw-through application? Seems like you'd have to dump fuel outside the motor. If you recirculated it, you'd end up with a rich A/F mixture and possibly puddling.
You mean the blow off vavle? You don't need one running draw through, when you snap the throttle shut the still spinning compressor is now choked off and has nothing to compress to cause a boost spike in the first place.
Kenny_McCormic wrote:
In reply to Ditchdigger:
You wouldn't gain much, then you just have 3 little holes going into one little hole in the log, rather than 3 holes DIRECTLY into the log.
Nope. The Offy kit is designed for drilling two new holes off to the sides of the original and the heavy casting seals them with gaskets and gives you two more places to mount carbs. It triples your flow
OG 60's stuff that is still available new.
I stand corrected, neato then. I imagine being offy its mega bucks though, vs knocking out freeze plugs.
Awesome, it looks like you've done most of the research for me already. I hadn't considered the issue with the valve cover yet but it probably would have stood out. I vaguely recall reading about a modification to the center exhaust port when running headers, I wonder if that would help eliminate some of the heat issues. Seems like it may be the best solution to run them on the outside. Of course, then you're injectors are pretty close to the header and turbo I would think.
What are you putting the finished motor in? If you say circle track style two door falcon, I may have to track you down and kill you. Because I want one!
noddaz
Dork
12/14/13 5:37 p.m.
Far out....
Amazing things were done back in the day...
Ditchdigger wrote:
I plan on using a port divider. It should even out the exhaust pulses and keep velocity up in theory. What I want out of it is an easy way to split the manifold evenly for a twin scroll housing.
Hal
SuperDork
12/14/13 6:41 p.m.
I think turbofiend is looking to build something like this"
Don't know much about the car except that it is an old Hudson that showed up at a cruise-in last year.
noddaz
Dork
12/14/13 6:53 p.m.
Meanwhile, back at the ranch...
Turbo on a 200 6 cyl
http://www.fordsix.com/forum/viewforum.php?f=22&sid=4ed1d6224abf5cac92498fdb02531bf6
The force induction portion of fordsix a forums has a lot of builds. From sketchy looking, with questionable fab work to super clean and high dollar stuff. Some guys are building really fast cars for pennies blowing through the stock carb.
Original 84-87 Chrysler turbos had the injectors mounted behind and below the log intake right over the exhaust and turbo.
A simple fiberglass and aluminum heat shield was all that protected the fuel rail and injectors from the heat generated by the turbo and exhaust. Oh and this whole assembly was pinched between the back of the motor and the firewall.
Aside from rubber fuel lines failing due to age and heat, I've never had any issues related to heat and that solution with those cars when I had them in the mid-late nineties. The fact that the intake sucked and restricted hp was another matter.
When the stock 2.2 struggled to make 100hp with a 2-bbl carb and made 150hp with a turbo pushing only 9psi without an intercooler and 175 with 12psi, a better intake and an intercooler, I'd say anything you do will be better,
Ditchdigger wrote:
In reply to turbofiend:
Crew cab 63 Falcon
It's a four door, so you can live...
It will still be epic though, I love that body style.
I think you'd be best advised sticking with the original plan here, this is your girlfriends car after all. I dont think we're looking for huge power or anything like that here if she is adverse to a v8 swap. You can't get much simpler drawing through a big SU carb or maybe some stock application 2 barrel.
Vigo
UberDork
12/15/13 12:39 a.m.
Sorry for what may be a stupid question, but how is the wastegate going to work in a draw-through application? Seems like you'd have to dump fuel outside the motor. If you recirculated it, you'd end up with a rich A/F mixture and possibly puddling.
I think you're mixing the idea of a wastegate and a blow-off valve. The wastegate will work just fine in a draw-through setup. There is no need for a blow off valve on a draw-through setup.
Can I use a tbi unit and remove the injector to use as just a throttle body? Then still do port injection?
Yes, BUT.. if you're going to do that it's MUCH simpler to just use a port injection throttle body. They typically even have convenient round barbed ends on them, perfect for slipping an intake pipe onto. Some tbis have weird inlets.
What size SU is that? I have a pair of HS-6's on my Volvo, and I've heard of an HS-8, bit those look even bigger!
Note to those who may not know, the number in the SU carb designation is the number of eighths of an inch larger than 1 inch the throttle plate is in diameter. So an HS-6 has a 1-3/4" throttle plate, for example. IIRC the HS-6 flows about 110 CFM or so stock.
It wouldn't be hard to fabricate a little sheet metal manifold to use whatever 2 barrel downdraft you like.
Leafy
Reader
12/16/13 7:30 a.m.
Girl friends car?
Will this girlfriend know what to do when the draw through carb setup ices up and the throttle sticks open on a cool rainy day? This is much less of a concern with the throttle body because it wont have nearly the same cooling effect with the lack of the carb's venturi.
And if this is the GFs daily driver you want at least an MS2 if you go FI, MS1s are acceptable for budget racecars, they blow dick in street cars.
For how hot the engine bay of those old cars gets, I'd be impressed if somebody manged to ice the carb. Especially with the exhaust manifold right next to the whole mess.
In reply to Leafy:
Not her daily. We both have new daily drivers and projects. I'm leaning towards MS after all this awesome info. She's smart so She could probably handle the draw through but yes, cue eye roll as I try to explain drivability issues for mo power. She actually got excited when I explained what I could do with fuel injection.