TR7 & TR8 Mailing List

RE: Holley - now Quick Fuel 450 carburetor

0 Members and 1 Guest are viewing this topic.

Brian Lanoway

RE: Holley - now Quick Fuel 450 carburetor
« on: June 13, 2019, 08:52:43 AM »
I have a Quick Fuel 450 cfm carb with vacuum secondaries on my TR8. Worked
perfectly right out of the box with no adjustments necessary. Also has sight
glasses on the sides of the float bowls, very handy for setting the float
levels.

https://www.holley.com/products/fuel_systems/carburetors/quick_fuel/street/sl
ayer_series/parts/SL-450-VS

Itbs really a higher-quality, aluminum Holley carb made for racers. Quick
Fuel used to be an independent company but itbs now owned by Holley.

Brian Lanoway
1980 TR8


Sent from my Apple device.



Odd Hedberg

Re: RE: Holley - now Quick Fuel 450 carburetor
« Reply #1 on: June 13, 2019, 10:35:26 AM »
To me it looks as it still have that (not so clever) vertical split-

ting of the float bowls.  Or am my interpretation of the pictures

wrong?

/Odd



On 2019-06-13 at 14:51 Brian Lanoway wrote:

Peter

Re: RE: Holley - now Quick Fuel 450 carburetor
« Reply #2 on: June 13, 2019, 11:02:51 AM »
Does anyone here have any experience or information on converting to Weber

carbs on the TR7?

Peter Miller



Sent from my iPad



>

Wayne Simpson

Re: RE: Holley - now Quick Fuel 450 carburetor
« Reply #3 on: June 13, 2019, 11:23:18 AM »
The answer is "don't" unless 9 MPG is what you're after. Get your

Strombergs working properly or convert to SU. These are much better

suited to the side draft application of the inline 4.

Randall Glass

Re: RE: Holley - now Quick Fuel 450 carburetor
« Reply #4 on: June 13, 2019, 11:28:06 AM »
So Wayne, Ibm just curious, is there an advantage of the SUbs over the

Strombergs? And will the FASD still work with SUs?



>

Wayne Simpson

Re: RE: Holley - now Quick Fuel 450 carburetor
« Reply #5 on: June 13, 2019, 11:39:27 AM »
The FASD will absolutely not work with the SUs as there is no provision

to attach it to the SU HS6 carbs the TR7 came with in the UK and some

other markets. There was a version of the FASD, not the same one as on

our cars, that was on the HF series carbs on some Rover SD1s,B  but these

never came here. Our Rovers, all 600 or so of them, came with fuel

injection.



Some people are just afraid of the Strombergs, I don't fully understand

why. The SUs might offer a slight advantage in power, maybe a couple of

percent over the Strombergs. They used the Strombergs here because they

ran clean and would hold onto their settings.

Brian Lanoway

Re: RE: Holley - now Quick Fuel 450 carburetor
« Reply #6 on: June 13, 2019, 01:31:41 PM »
There are two separate float bowls, one for the primaries and one for the

secondaries with an overflow balance tube connecting the two. Can you explain

the not-so-clever vertical splitting that you are thinking of? The carb again

is a Quick Fuel Slayer Series 450 CFM VS carburetor.



I like this carb. It is beautifully made and ran perfectly right out of the

box.  I also like the adjustable vacuum secondaries; very easy to adjust when

they come in with  a screwdriver.  The car is very fast with this carb, the

spark plugs are a nice light tan colour and I can get as low as 9.2 l/100 km

(25 miles per US gallon) on the highway. Perfect for me. Give the trouble

setting up either Holley, I see this as a better solution.



End of the commercial.



Brian Lanoway

1980 TR8







Sent from my Apple device.









>

tr7v8@eml.cc

Re: RE: Holley - now Quick Fuel 450 carburetor
« Reply #7 on: June 13, 2019, 02:17:21 PM »
I had Strombergs on my old GT6, brilliant, set 'em up and leave 'em alone, because, as you say below, they hold on to their settings. The only minor faff is the need to keep a diaphram in stock as occasionally one will split .



Terry

Peter

Re: RE: Holley - now Quick Fuel 450 carburetor
« Reply #8 on: June 13, 2019, 03:43:06 PM »
The reason I asked about a Weber is my Strombergs were converted to a manual

choke by the previous owner. The FASD is damaged and I canbt find a used

FASD anywhere. Starting the car is very difficult, the manual choke just

doesnbt work. By the way, if anyone reading this has a FASD to sell contact

me.

Thanks for your input.

PeterMiller

Sent from my iPad



>

Triplesn8s

Re: RE: Holley - now Quick Fuel 450 carburetor
« Reply #9 on: June 13, 2019, 09:35:04 PM »
Every autocross that 450 carb?  If so how did it handle the loads?  Does it

use center hung floats?



Bill

Sent from my iPhone

Triplesn8s

Re: RE: Holley - now Quick Fuel 450 carburetor
« Reply #10 on: June 13, 2019, 09:38:01 PM »
I have found the strombergs to be ray to tune but needle selection is limited.

Has anyone just removed the fasd and plugged the idle air bypass hole?

Result?



Bill

Sent from my iPhone

William Parris

Re: RE: Holley - now Quick Fuel 450 carburetor
« Reply #11 on: June 14, 2019, 12:29:56 AM »
Fuel injection.  :)



Will



>

Wayne Simpson

Re: RE: Holley - now Quick Fuel 450 carburetor
« Reply #12 on: June 14, 2019, 10:10:21 AM »
The result would be a car that's impossible to start. You'd be better off

fitting a single manual choke carb in place of the fasd equipped one.

But let me just reiterate that the TWOA now has seal and gasket kits for

the fasd that allow you to recondition these at nominal cost. We're in

low stock at the moment, but we expect a shipment of gaskets soon.

I also rebuild these units for a fee for those that are not DIY types.

As for the needles, there are hundreds of different profiles. The trick

is finding the right one for your application. I'm running richer needles

in my car to compensate for ethanol blended fuel. I get good performance

and still maintain 30 mpg economy on the highway. You also compensate for

blended fuels by simply setting the jets slightly deeper.



Wayne Simpson, sent from my phone

--

.

Archives provided courtesy  http://www.triumphwedgeowners.org

Triplesn8s

Re: RE: Holley - now Quick Fuel 450 carburetor
« Reply #13 on: June 15, 2019, 09:50:53 AM »
Just to be sure I am describing it correctly because I don't know exactly what

the FASD is. Is that the water choke, or the little spring loaded rubber flat

plug thingy that plugs an air port in the side of the carb?



Bill

Sent from my iPhone

Wayne Simpson

Re: RE: Holley - now Quick Fuel 450 carburetor
« Reply #14 on: June 15, 2019, 11:16:20 AM »
The FASD (Fully Automatic Starting D vice) is an electrically heater,

thermostatically controlled third carburetor that bolts to the left side

of the front carb of a 1977-1980 Federal TR7. If you have a TR8, you have

a water heated autostarter (I hesitate to call it a choke because it

doesn't "choke" anything) on each carb. I am unfamiliar with any flappy

things that go onto any Strombergs.



Wayne Simpson, sent from my phone