High Volume Intake

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Model T Ford Forum: Forum 2005: High Volume Intake
Top of pagePrevious messageNext messageBottom of page Link to this message  By Tom Stanzione on Sunday, October 28, 2007 - 02:24 pm:

I plan to try out a High Volume Intake on a newly rebuilt 26 engine I will be installing in my 26 touring. My question is what carburetor have others used on this intake and what experience have you had?

The engine will also have a high compression head and an early stock cam.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Kenny Edmondson on Sunday, October 28, 2007 - 03:02 pm:

I'd say there has been every combination possible run. Your going to have to try the various carbs to see which one you like the best. If you have a "friend/s" that you can borrow some of the particular carbs off of that you want try, you could save some big bucks. I would say that you want to try one of the straight through carbs like a Simmons or Holley NH.

I'm currently running a Simmons and like almost everything about it with the only exception being the idle isn't bad but not perfect. I've run the regular NH's and L4 Kingston and those are OK. I want to buy a straight through NH as soon as some of my "friends" will let go of one.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Kyle Augustin, Olathe Colorado on Sunday, October 28, 2007 - 03:06 pm:

Tom, I have had good luck with the sway back NH carb and a high volume intake on my 27 Roadster Pick-up. The engine is mostly stock with an original head that has been milled an unknown amount and it will run out down the road at 50 miles an hour with ease, and pull the hills in high that a lot of bone stock cars can't. I tried the straight through NH once and I didn't like it very much, it didn't want to idle very well.

Kyle Augustin


Top of pagePrevious messageNext messageBottom of page Link to this message  By Richard Gould on Sunday, October 28, 2007 - 07:22 pm:

I had good luck with an NH, either the straight through or sway back, using the high volume intake. The straiht through has better power but the swayback is smoother and idles better. I also run a Ricardo head and a Stipe 250 cam.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Harvey Decker on Sunday, October 28, 2007 - 07:54 pm:

What does NH stand for?

Harvey....


Top of pagePrevious messageNext messageBottom of page Link to this message  By David_Cockey on Sunday, October 28, 2007 - 09:37 pm:

Holley Model NH carburetor, used in the Model T 1920 - 1926. Ford also used Kingston L2 and then L4 carburetors during this time. Ford also built NH design carburetors, originally labled F and then NH.

The NH is almost certainly the most used carburetors on Model T's today, and have been retrofitted to many if not most earlier T's. They are generally reliable and not tempermental. Original NH carburetors are readily available and reproductions are also offered. Replacements for all parts are available.

The first year or so of NH carburetors had a straight through bore, and then introduced a dip in the air passage. Many folks believe the straight through design enables higher power but there are also many reports that the straight through NH don't idle as smoothly and don't have as good response at slower engine speeds.

http://www.mtfca.com/encyclo/C-D.htm#Carb1


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mack Jeffrey Cole on Monday, October 29, 2007 - 07:42 am:

Could someone post a photo of a high volume intake? I am purty sure I have 1 that I am going to use on my project and would like to see the type you all are speaking of.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Michael Pawelek on Monday, October 29, 2007 - 08:03 am:

I am personally a fan of the Strombeg OF and run one on my 1919 Touring with a Z head. It has great power in the top end and idles smoothly. One of its features not found in many other period carburetors for the Model T is the "economizer valve" set up that opens and closes when accelerating from idle to full throttle. There is no stumbling between these two speeds at all....Michael Pawelek

wepioutbv-q985ty389tvhn[w4o8ytcheth


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mike Walker, NW AR. on Monday, October 29, 2007 - 08:40 am:

Mack -- The high-volume intakes, both original and reproduction, are made of aluminum. That's an easy way to recognize them. If you compare them side-by-side with an iron one, you'll see that the runners are larger.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Warren Mortensen on Monday, October 29, 2007 - 09:05 am:

I'm presently running a Holley G on my '17 with the high volume intake. Does fine, helps pull the hills (haven't noticed any difference to speak of at top end speed) with the original cam.

One thing I did notice was that the high volume intake manifold I got spaces the entire carburetor farther away from the engine block. Don't know the exact difference between the old cast iron intake and this new aluminum one. This causes the idle speed to be higher and the adjustable throttle rod is adjusted as far out as I can take it without it falling apart. If I disconnect the throttle linkage, I can idle back down to low RPM. Right now the car will do 10 or 15 MPH in high gear completely backed off.

Your car won't have the adjustable throttle rod so if you run into this, you may have to bend the little arm on the quadrant rod or do some other work to get the idle speed down.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Roger B. Barnes, Jr. on Monday, October 29, 2007 - 09:28 am:

Mack, Below is a pix. of my 1912 High Volume Intake manifold, which is available from most T vendors. As has been said, it is alumimum, so with the use of a magnet, you should easily identify one. It would take a close up pix. of both side by side to show well the differences, but again since it is alumimum the outside size is a bit bigger. I only know what is written, I do not have any detailed facts, that the inside is larger, thus giving more and better flow to air to the carb. I would also assume that gas in 1912 was not as good as later, so this was used as the standard intake manifold for those early years. Hope this pix. helps you out.

Roger


Top of pagePrevious messageNext messageBottom of page Link to this message  By Tom Stanzione on Monday, October 29, 2007 - 09:53 am:

Thanks for all the input folks. Looks like the NH is the all around carburetor. I have a couple of L4's I will also try and may be able to find a straight through NH as well.

I am a bit fascinated by Michael's Stromberg OF as well. Michael, do you have one you might part with?

I appreciate all the responses and will look forward to more input as well.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Royce on Monday, October 29, 2007 - 10:06 am:

Roger,

The 1912 - 1913 aluminum intake looks similar to the new high volume units (as seen in your picture) but it is actually different. The original part seen below on my 1913 touring has a much smaller hole for the carburetor and I think is similar in volume to the cast iron intakes that were used beginning later in the model year.

Totally agree on the Stromberg OF, it is the best carburetor to use with a side draft stock type intake or the high volume unit. I have one on my '13 right now.

Royce

13intake


Top of pagePrevious messageNext messageBottom of page Link to this message  By Michael Pawelek on Monday, October 29, 2007 - 12:14 pm:

Note.... Royce's picture above is not of a Stromberg OF.
The square carburetor is I believe a "Sunderman F" for the Ford Model T.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mack Jeffrey Cole on Monday, October 29, 2007 - 12:34 pm:

Mine is cast iron and looks identical.I will have to post a photo of it.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mack Jeffrey Cole on Monday, October 29, 2007 - 12:53 pm:

Here is a photo of the intake I plan to use that I am under the impression is a high volume intake.the red 1.It is cast iron and has a heck of a dog leg in it compared to the standard intake.Also here is the carb cleaned,rebuilt and ready to.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mike Walker, NW AR. on Monday, October 29, 2007 - 11:01 pm:

I didn't know any of the "dogleg" manifolds were cast iron. I thought they all were aluminum. Is that a Ford part? You can see in that comparison pic how much larger the runners are.


Top of pagePrevious messageNext messageBottom of page Link to this message  By sethharbuck@bellsouth.net on Monday, October 29, 2007 - 11:43 pm:

Mack,

If the walls aren't very thick and there is lots of volume in that dogleg, that's real nice for power in engines with siamesed intakes like on the T. With a high compression head, this "plenum" would have even more positive power effect.

The disadvantage is that the engine will be somewhat more cold-blooded, but with a good old NH you'll probably not mind that much.

It looks almost as nice as my yellow low-performance one!

Seth :-)


Top of pagePrevious messageNext messageBottom of page Link to this message  By Warren Mortensen on Tuesday, October 30, 2007 - 06:07 am:

Don't know if this is the actual case, but that cast iron dogleg intake may be from a Metz. It was a cyclecar if I recall or at least one of those smaller cars made back in the early teens. I understand that a number of engine parts were interchangeable with a Ford.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mack Jeffrey Cole on Tuesday, October 30, 2007 - 10:09 am:

Here is a side view of it.I did some checking and the head I plan to use is as perfectly flat as you could ask for but I have considered getting it "shaved" a tad to help with compression as I doubt I could afford 1 of those fancy heads,and a low head may let it run hot.A member of the club I am in gave me this intake and said he was told it was for a TT truck to give it more power.He didnt know for sure.But I kinda like it so what the heck?:>)


Top of pagePrevious messageNext messageBottom of page Link to this message  By sethharbuck@bellsouth.net on Tuesday, October 30, 2007 - 10:24 am:

Mack,

If the head is flat, then I'd leave it alone. Milling the head really doesn't raise the compression much (maybe a 1/4 point).

If you haven't bought pistons but are going to, opt for the high compression ones.

I like that manifold too!

Seth


Top of pagePrevious messageNext messageBottom of page Link to this message  By Mack Jeffrey Cole on Wednesday, October 31, 2007 - 08:17 pm:

The engine is totaly rebuilt with new babbit and new aluminum pistons.They appear to me to be made same as original though.Supposed to be .030 oversize to.I bought the engine allready done so dirt cheap I didnt ask to many questions except "where is it?" and "are you sure?"
Allthough I aint been posting alot of updates,things are moveing,slowly.I will be installing the oil pan to the engine tommorow.Thanks to freinds in the club for helping me out on some parts and Snyders,Things are moveing along.
Fenders are close to ready for paint.A little more work with spot putty or some bondo in small amounts and sanding will make them decent.I hope to paint the chassis and trim those type parts out and install them before final painting.The vehical will have some minor flaws that perfectionist will spot,but I am building it to drive the wheels off of it, not win trophys.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Bob Jablonski on Wednesday, October 31, 2007 - 08:58 pm:

Tom:

I use an original '11 aluminum intake with a straight thru NH carb. The "Z" cylinder head adds the extra "zip".

Bob Jablonski


Top of pagePrevious messageNext messageBottom of page Link to this message  By Peter Martin, Sydney, Australia. on Wednesday, October 31, 2007 - 09:07 pm:

Regarding the dog leg manifold, Does anyone know what the right hand drive cars used for an inlet manifold? I have a dogleg manifold that I bought to fit to my 1912 touring, but unfortunatly it won't fit due to it fouling the steering shaft. I would be interested to know if the right hand drive cars had a special manifold or one similar to the later style non dogleg style.

Peter.


Top of pagePrevious messageNext messageBottom of page Link to this message  By Tom Stanzione on Wednesday, October 31, 2007 - 11:14 pm:

Thanks Bob,

I just ordered the Z head for this engine. I hope that this intake and a good carburetor combination will help this car with some needed power. If it turns out to be a good combination I may deploy it to my other 2 cars as well.

Thanks again to all for the great input


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