Posted By: PAULS_340
How do you like the new Demon carbs? - 07/17/14 05:14 AM
Is the jury out on these carbs yet?http://thumbs3.ebaystatic.com/d/l180/pict/271538488646_1.jpg
How do you like the new Demon carbs?
Posted By: 74RALLYE
Re: How do you like the new Demon carbs? - 07/17/14 10:27 PM
I'm curious to. I have a 440 that needs something like a 750 Street Demon.
Bump.
Bump.
Posted By: PAULS_340
Re: How do you like the new Demon carbs? - 07/17/14 11:48 PM
I'm really wondering about the new style Street Demons that resemble the original ThermoQuads. 625 and 750 cfm
Posted By: ScottSmith_Harms
Re: How do you like the new Demon carbs? - 07/18/14 12:01 AM
Pretty much a clone of a Thermo-Quad with a couple mods. They screwed up by not making a 1000fm. 
Posted By: DaveRS23
Re: How do you like the new Demon carbs? - 07/18/14 01:23 AM
Calling them a clone may not be the best way to describe the new Street Demons. There are several key differences between the Thermo-quad and the new Demons. But there are some similarities.
There are quite a few tests including one with a small block A body. Try Google.
There are quite a few tests including one with a small block A body. Try Google.
Posted By: 74RALLYE
Re: How do you like the new Demon carbs? - 07/18/14 11:33 PM
What about the composite body vs the aluminum body? Composite is better heat wise, but how long would it keep it's shape without warping?
Posted By: Dodgem
Re: How do you like the new Demon carbs? - 07/19/14 12:53 AM
Good reviews so far.
https://www.youtube.com/watch?v=DPOuEOkazVc
https://www.youtube.com/watch?v=DPOuEOkazVc
Posted By: ChinooK440
Re: How do you like the new Demon carbs? - 07/19/14 01:29 AM
I have no experience with these carbs, But am interested in them as well.
One thing i noticed in the ads is the size of the primaries on the 750 version is 1-11/16” which is awfully big to be a true spread bore .
It seems that they just increased the size of the primary bores from the 1 3/8" size on the 625 to make the 750 which kind of defeats the purpose of the spreadbore design ?
One thing i noticed in the ads is the size of the primaries on the 750 version is 1-11/16” which is awfully big to be a true spread bore .
It seems that they just increased the size of the primary bores from the 1 3/8" size on the 625 to make the 750 which kind of defeats the purpose of the spreadbore design ?
Posted By: 74RALLYE
Re: How do you like the new Demon carbs? - 07/19/14 04:53 PM
All I can find on the 750 cfm Street Demon is great reviews and glowing magazine articles. The single complaint I found was that the screws on the top side were very tight. I'm a pessimist so I expect to find something negative or an application where the Demon is not well suited.
At $354 it's priced right.
I'm trying to choose between the Demon, the Holly Street Avenger and the Street Avenger Ultra.
The Demon reads like it's the best and cheapest, but what about in the real world on a low vacuum engine?
At $354 it's priced right.
I'm trying to choose between the Demon, the Holly Street Avenger and the Street Avenger Ultra.
The Demon reads like it's the best and cheapest, but what about in the real world on a low vacuum engine?
Posted By: gdonovan
Re: How do you like the new Demon carbs? - 07/20/14 12:14 PM
Quote:
One thing i noticed in the ads is the size of the primaries on the 750 version is 1-11/16” which is awfully big to be a true spread bore
Its not a true spreadbore, it is designed to fit on a squarebore intake. One reason I suspect there is no model rated over 750 CFM.
Posted By: 74RALLYE
Re: How do you like the new Demon carbs? - 07/21/14 03:37 AM
A 750 Demon is in the mail. I'll be setting it on my 440 by the end of the week. I ordered a pack of step up springs as well.
Posted By: DaveRS23
Re: How do you like the new Demon carbs? - 07/21/14 03:51 PM
Good choice! Let us know how it works for you. This question has been asked a lot lately.
Posted By: stinger
Re: How do you like the new Demon carbs? - 07/22/14 01:57 AM
thinking of giving up on my ole DP trying to make it more street friendly 
