Aluminum Intake

kamzack

Is there an advantage to an aluminum intake on a 254?
Thanks in advance,
Kim

StillOutThere

Other than taking a few pounds out of the car, no.

RL Chilton

StillOutThere-

Does it not raise the compression slightly, as on a 6?

LHudson

I have a question. Was there a alum. twin H made for the 6? I think I have read or heard that one was made in 48-49. Thanks L Hud

50C8DAN

How does an intake raise the compression?? I think you might mean a head? The factory aluminum head does raise the 8 compression.

53jetman

Yes, the very first Twin H manifolds were made of aluminum. Why they reverted to cast iron I do not know. Russell - there is no way an aluminum manifold would raise the compression of the engine !

50C8DAN

There were two barrel manifolds made in 48 - 49, but not twin H. Twin H was not official until '52.

schillaz

Edmunds made one for the big six.............there is one on eBay now.

http://www.ebay.com/itm/Edmunds-Aluminum-2x-2bbl-Intake-for-Hudson-Six-262-308-1948-1956-Twin-H-Power-/400559439964?pt=Vintage_Car_Truck_Parts_Accessories&fits=Make:Hudson&hash=item5d4334005c&vxp=mtr

LHudson

Jetman, the twin h for the Jet , was it alum. ? L Hud

Glowplug

Larry: Hudson did not offer an aluminum manifold for the Jet.

LHudson

Thanks farmer. L Hud

RL Chilton

See, I make mistakes too. I read "intake" and was thinking "head". What a dummy. breathing too many gas fumes lately . . . .

bent metal

Wish I could of recorded the talk that Ivan gave at the National this year. He went into some detail on a wide variety (all actually) of performance parts for the Hudson. Don't think I took it all in. ...If I remember correctly, the aluminum intake flows slightly less than the stock Twin-H manifold. So other than the polished good looks, and a loss of some weight, it's a disadvantage.

Hopefully Ivan will respond on the subject.

russmaas

the aluminum intake had a taller down draft base and doesn't atomize as well as the stock twin H. I have only seen one in all my years around hudsons

MikeWA

Russ- So the carburetors sat higher in relation to the engine on the Edmunds manifold? Do you know off hand about how much higher?

kamzack

I did install the aluminum intake on my 254. Few months ago after having discovered I owned one, I spent 11 hours polishing it. I was trying to get shop in order for a move that I've now made and had 3 intakes in a parts pile and didn't know one was aluminum until I picked up 2 at a time. Dramatic difference in weight. Cleaned off some grunge and that's what I found. Since I likes bright shiney stuff, I had to what it would look like all shiney. It had some problems, stud hole stripped and generally beat up, but looks much better now. I'm sure it won't hold the heat as the cast iron does. Will post pics later.
Thanks for listening,
Kim

terraplane8

This is a 254 one.

[Deleted User]

I've always heard they helped in vapor-loc situations . Never tested this theory myself however
Roger

russmaas

Its been a while sense I had seen it, I believe 1 to 1.5 inches taller

RL Chilton

Sounds like (and looks like) it will still fit under the hood in a step-down.

50C8DAN

There has been several discussions about the Edmunds 2x2 manifold under the hood of a step down. I have one of these and would like to put it on sometime and find out. Bill Albright always said it would not fit. My guess is it might fit but not with stock Hudson aircleaners.

Lee ODell

There are air cleaners that look like Twin H air cleaners made for 2 barrel carburators. Get 2 of them add Twin H decals and you have the Twin H look. I almost bought one at Long Beach swap meet until I messured where it attaches to the carburator intake.

Have a good day.
Lee O'Dell

Ol racer

Ive had a few Edmunds Intakes on my Hornets over the Yts and liked them because were lighter than Twin H. However, the late Jack Clifford told me 'dont use one if you want to go fast' . I assume he was speaking from experience and not just personal opinion.. Edmunds sure polish up nice for Street use though....

Ol racer

FYI

I like the '49 Hudson Aluminum Intake manifold's to adapt large Rochester 2GC 2bbl carb and/or Holley 4bbl Carb that seem to work well.....

essexcoupe3131

couldn't you mill them down
to the original height to gain power
just a thought

hudsn47

My 47 254 has the aluminum intake, have to watch them in the area directly under the carb as the aluminum can be thin there. I had a stuck valve and it backfired and blew the bottom clear out of the manifold. I was fortunate and found a good welder on aluminum and he was able to repair it. Doug

paulrhd29nz

Terraplane8, who made the 254 intake you picture?

ivanz62

Hoping to clarify this thread which is covering many things resulting in some confusion.
1. This is about aluminum intake manifolds for an 8 cylinder.
2. Hudson made one for a two barrel carb in 1947 only, I am told. It will fit on any "big port" engine (1937 and later). Why they did this is subject to speculation. It does not increase performance, but can be welded to much easier than cast iron if you wanted to make a custom manifold of some sort.
And, of course, it is lighter.
3. Edmunds made a twin two barrel manifold for the 8s as pictured earlier in this thread. The carbs were on high risers--hood clearance could be a problem on some cars. The only one I know of running was on Bruce Brown's 37 Hudson Country Club 8 where it was used with an Edmunds finned aluminum head and custom "over the top" headers. Don't know what kind of air cleaners were used.
4. I have one Edmunds manifold that has had the "risers" cut to be about the height of a stock manifold. I always assumed this was to fit under a low hood. One could cut their manifold and re-drill and tap the carb mpunting holes.
5. The tall risers give a better tuning situation for the relatively low revving Hudson. Many of the best reputation Ford flathead manifolds were made this way. Seek out a picture of the 33 Hudson Indy car engines. Tall risers there too.
6. Negative comments I have made about the Edmunds two two-barrel are about the Big Six manifold that is designed to fit with a stock exhaust manifold. Smokey Yunick and a number of others told me that a stock Twin H was superior to that--it was made before Twin H was available. There is another much more rare Edmunds two two-barrel manifold with a large plenum that was made for racing with headers. It is what Dany spring runs on his drag car which runs well. Will try to find some pictures to post to illustrate the types.

More questions?
Ivan

nick s

2. Hudson made one for a two barrel carb in 1947 only, I am told. It will fit on any "big port" engine (1937 and later).

Ivan, they were available beyond 47. As I understand aluminum head cars got the aluminum intake. not sure if it remained that way till 52 but they were definitely available in the stepdown years.
as for why in 47, probably to spread around the material usage. much as you get into the korean war era and chrome thinned out and parts like radio housings varried alum or steel car to car.

terraplane8

paulrhd29nz - I think it is an Edmunds manifold.

50C8DAN

Here are some close ups of the Edmunds manifold for the H8: