Hey Erich Bruckner asked about my engine performance with this dual exhaust. Eliza (my speedster) is pleased, very pleased indeed. She can really breathe now.
Hoooooo buddy! I have high compression pistons, a low head, 351W valves, Stipe 280 cam, Bosch DU-4 ignition, and a Zenith S4BF carb and matching intake. Just finished the install of this dual exhaust manifold and wowza. Noticeably increased acceleration and top end. My normal throttle setting for 45 mph had me over 50 before I realized it. I could already accelerate well when I was at speed, but the throttle response now at all speeds is just ridiculous. I may have just crossed from quick to scary fast. My engine was pretty well set up to enjoy and notice the difference with a dual exhaust versus the stock, but even still I'm impressed and the money and effort were well worth the effect. I supposed a more stock engine (especially stock intake and carb) might not notice the difference as much, but with as much difference as I'm feeling it's got to help any engine. So Erich, I give this period accessory 2 thumbs up!! And Eliza can't wait to get out on the road and really stretch her legs! Zooooooommmmmmm!! Also I'm stealing the whole zoom thing from Stan Howe (nod to Stan). Yellow Fords Are Faster!!
It is much easier to make a T go fast than it is to make them stop fast. I hope you have worked on that also.
Yes sir! I have some rod-linked brake pedal activate AC brakes, lined emergency brakes, and my trans brake is set up to come on and assist the ACs about 3/4 down. I have tested and each system is wholly sufficient to stop the car in a resonable distance on its own, should any one system fail.
Seth, Looks Great!!
Now all you need is to add a set of these hidden in the valve gallery to push the "ZOOM" factor
Here's the Accessory Of The Day thread on these I posted back in 2010.
So who makes the manifold and is it new or old?
In today's world we can get a horsepower out of each cubic inch. Most overhead valve units with special breathing ala cam and carburetion and big ports can get upwards of 80 horsepower.
If your engine is already armed with performance thingies you could have added about four horsepower with that accessory. If it were stock you might get two horsepower. A T has good exhaust with its four ports and Henry made it starve for intake air by using only two ports in order to increase low speed torque so he could use a two speed transmission.
Your next step is to match the intake ports with the manifold, you might get two more horsepower.
If a T makes 20 horsepower and puts16 to the rear wheels, added horsepower all gets to the rear wheels.
Dan, I believe Chaffin's is reproducing them.
Seth, fantastic. Keep us posted. Maybe a drive video? Or at least an engine running video? I hope you try it with straight pipes just for fun/ I would be soooo tempted to not use a muffler.
My manifold is from Chaffins, but I believe that it is a reproduction of an original accessory.
Jay! Those are crazy! Not that I'm any kind of expert or even have much experience but I've never heard of such a thing before. I would love to buy a set if someone has some they are willing to part with. If it increases lift by 100%, would my Stipe 280 cam become essentially a 560 (!!!) cam?!? Holy smokes. Is there enough room in a low head for that kind of lift? Wowza. I mean, when I went from a stock cam to the 280 cam I thought the valves were gonna lift out of the engine they went so much higher. I cannot imagine them doubling. Eliza can really breathe now with her cam, oversize valves, and manifolds, but those things almost feel like cheating! Lol, I'd want some kind of clear valve covers so people could see them working.
Well, probably no video for a couple days, I'm smack in the middle of that first hurricane over here in eastern North Carolina. I started out with two new exhaust pipes and ran the engine like that just to see how it would sound. It was really cool and if I didn't have my Taylor Loudspeaker Muffler I might would have left it like that. Although, in comparison the straight pipes have kind of a "brap" sound on each piston that I didn't like. Where as with the Taylor it's this deep, rich, manly bass sound. I doubt my phone's microphone will let you really appreciate how delicious Eliza sounds. The nice part is you can leave the flap closed and it sounds like any other T. Pull the wire though and it removes all the back pressure and sounds awesome.
Once this mess clears up I'll shoot a video of the engine running and driving along.
Batten down, looking like 100 mph winds hitting the outer banks tomorrow AM.
We are hunkered down and ready to ride it out. Hopefully it'll turn out to the ocean a bit and no one will get anything too bad.
Any chance you've got a video of the car running with the manifold installed? I'm thinking about putting the dual manifold on my speedster and would love to hear how it sounds. A few pictures of how you routed the exhaust pipes would be awesome too.
Hey Christopher, sent you a PM, but it wouldn't let me attach pics or video. Email me back and I'll send it to you.
I wonder if these multilift valve actuators are still available. I would try these in my next engine.
Bill you and me both! I had never heard of them until Jay posted them in this thread. I've been scouring high and low trying to find some. If anyone has some for sale let me know. Seems like a great item to reproduce, just needs some tweaks to make it more dependable.
They were remade in the 70s in a small batch, they are still out there,but very hard to find. I know this ebay seller has a unused reproduction set, contact him to see if they are still available. They probably are not cheap though.
Seth, Glad you like it. We have plenty more where that one came from. Glen
Okay, I see the zoom, what do you have for stop?
I believe I bought the last set Josh had. I am going to use then to kick the touring in the back side. MGH
Hey Terry, everyone on the forum asks me that. Going fast is great but how are you going to stop?
I have lined emergency brakes that will lock the wheels up. I have a Warford transmission so I got a set of AC brakes that will lock the wheels up (via linkage with the stock brake pedal). And, I have my band set up to come on around 40% of pedal travel - I've disconnected the ACs and the band will stop the car. Last but not least! I don't drive fast if there isn't room or if folks can pull out in front of me. Other than that I drive like I don't even have brakes, everything is done with the throttle. I only touch the brake pedal so that my brake lights come on and folks behind me know I'm slowing down.
Seth, I have a dual exhaust in the garage waiting to go on the touring. Can you use stock T exhaust pipes or did you have to have a set made? Also, do you run mufflers or route the tubes to a single muffler? Noel
Noel I bought 2 stock exhaust pipes and just ran them down side by into a single muffler.
They line up nicely with plenty of clearance and no interference issues. The only thing I changed was I routed my gas line to run down the center of the car, hugging the driveshaft, Warford, and Ford transmission all the way down until it was past the hogshead. That gave max clearance from the exhaust pipes without changing much.
I have my exhaust going into a single muffler - Taylor By-pass muffler that I'm reproducing. It's just like this one pictured below but modded to accept two pipes instead of one.
I have dual exhaust manifolds on two cars. One is inch and half all the way. The other is inch and half very short distance then two inch all the way. Both have mufflers on each run and split at rear exiting on each side of the spare.
The two inch when first installed had John Deere straight through mufflers, They reverberated to such a pitch had to take off on an open car were way to loud
I purchased the dual from Chaffin's, maybe he can post the pix here of my TT. Dual exhaust set up. I sent him nice clean custom install. Yes much more power. Sounds cool too. I used the tractor two mufflers for a Ford. Has a baffle spark arrestor inside. A bit quiet 1 1/2. All the way
Hey here's a video of my dual exhaust in action.
You might want to try the Navy surplus yard for a larger anchor for stopping. Grin Its looking great.
THAT.......is très COOL!........
Ha Ha that sounds awesome Seth!!!
What do you put the exhaust on with the double ears or cut them in half?
My personal experience with people who own a set of "multi-lifts" is they are not great "team players". I have asked to borrow a set so I could make a digital drawing and then go and have some made using a EDM. If they were cut out of 8620 steel using a EDM and then case hardened they would be tough and reasonably priced.
Jerry Hunt, now deceased,of our Dallas, TX club reproduced the multi-lifts. There are still some out there but they are no longer being manufactured. I have no idea what happened to the drawings.
Anyone here talked to or heard from Seth?..It seems like he just disappeared, hope all is well.
Well....I don't know anything about multilift valve actuators...but I did purchase Chaffins split exhaust and the "extra" large intake manifolds years ago when he first put them on the market. I took the split exhaust to a glass pack muffler, then to a good sized single exhaust. Between the two, wow, it made a big difference in performance. She's a little loud but fast. The only part of this set up that let me down is because the split manifold is so wide the carb mixture rod no longer has a straight shot to the carb. Chaffins answer to this is a braided cable that you attach to the end or the control rod that permits the mixture control swivel to rotate. The problem is that it's next to impossible to make minute adjustments on a single turn. You wind up making multiple turn before getting what's needed. But, the benefits are there. Really....
I too was wondering why we haven't heard from Seth lately.
He is knee deep in exams and focused on getting straight A's...