36 replies to this topic

[Spider]

Twin HS2 look all very nice,but it's all the faffing  and fanying around keeping them tip top

 

I have gone both ways with twins on HS2 and HS4 and single 44,   choice though really is yours,   You gotta live with them

 

Every 3 / 6 months checking the balance against mixture and tick over,,    Oh no,,   You will develop back ache at an early age

 

You will be walking with a hunchback  !!!!!!!

 

It's not just anything to do with the carbs that I get fed up with in having them fitted.

 

Other little jobs that are otherwise easy, become a real chore, eg, the Clutch Master, Clutch Slave (inc bleeding it), fuel pump (if mechanical) and so many other, normally easy, jobs.

[tb205gti]

Twin HS2 look all very nice,but it's all the faffing  and fanying around keeping them tip top
 
I have gone both ways with twins on HS2 and HS4 and single 44,   choice though really is yours,   You gotta live with them
 
Every 3 / 6 months checking the balance against mixture and tick over,,    Oh no,,   You will develop back ache at an early age
 
You will be walking with a hunchback  !!!!!!!

Well I've been running the hs2's on my 998 for the past 5 years now. It's not been bad..

[racingbob]

I got hif44 on mine mg metro cam 86 hp never have to touch it. wouldnt entertain a weber as have to cut bulkhead

[tb205gti]

Finally pictures..

 

 

 

 

 

Hard to see, but manifold have been ported

 

 

24 venturis?

Edited by tb205gti, 26 March 2018 - 03:25 PM.

[Retroman]

Its all been said above....

 

You will get more from the HIF44

 

Chopping the bulkhead for an airbox is a big task

 

The 24 on the weber is the series number.

 

The chokes could be any size probably between 32 and 37mm

 

The weber may well need £120 spending on it, re-jetting / chokes / emulsion tubes etc and overhauling, and a filter is about £80, airbox another £30

[nicklouse]

god that looks rough. where are the big O rings?  or did they just put some RTV between manifold and carb? 

 

and no thackery washers.

 

Edited by nicklouse, 28 March 2018 - 01:48 AM.

[hhhh]

god that looks rough. where are the big O rings?  or did they just put some RTV between manifold and carb? 

 

and no thackery washers.

 

 

Ahem, that's "Thackeray": http://gglotus.org/g...asher/misc2.htm

[mikal]

I really don't understand the anti Weber sentiment in this thread. I have a 45 Weber on my car (came with the 1275 engine) so I didn't choose it. I have a similar manifold (it's not the infamous goose neck type) to the one shown above fitted with a Ramflow air filter. It clears the bulkhead fine with NO modifications whatsoever (1967 Mk 1). I'm getting 80 Hp at the wheels so the manifold can't be THAT bad...

Sure, MAYBE I'd get a few more hp if I changed to a different carb set up, but I just don't care about that. It's a road car after all. And I haven't had to tune it or change jets/ needles whatever in years....

[Spider]

Mikal, Webers can be used on a road car and to good effect. Yours is one example.

 

However,,,,,,

 

For a Road Car better all round results can be gained from an SU, though usually, if only looking at peak numbers alone, a Weber will nearly always come out on top.

 

By All Round results, I'm including lower RPM Power and Fuel Consumption.

 

The reason for this is that at low air speeds (through the carb), the fuel will atomise much better than it does through a Weber. Proof of this comes when on a correctly Jeted Weber Car that's been used for road use, and if you lifted the head. Cylinders 1 and 4 clearly shows signs of running Rich, where as Cylinders 2 and 3, Lean. You don't see that with SUs and in particular, singles.

 

Sadly, it does nearly always shorten engine life I've found due to Bore Wash of Cylinders 1 and 4.

 

On a Race Car, where one is nearly always on wide open throttle, sure, a Weber is usually hard to beat, though I've heard of some saying even here, an SU can be better. Likely getting in to academic numbers by that point !!

 

Horses for courses

[mikal]

Hi Moke,

 

Thanks for the insight, always learning of people like yourself!. I guess I was having a bit of a rant because contrary to what others say you DON'T have to chop the bulkhead to run a Weber to produce decent horsepower in a ROAD car! If you have a Weber, use it. Why spend money on new setups? It's not an all out horsepower contest. is it?    

[Chandavi01]

Definitely go with single HIF 44, easy to set up and easy to service, may not look as nice as a twin carb set up but much less trouble. If I can do it anybody can, easily capable of handling 100+ BHP. Cheers.

[nicklouse]

Hi Moke,

 

Thanks for the insight, always learning of people like yourself!. I guess I was having a bit of a rant because contrary to what others say you DON'T have to chop the bulkhead to run a Weber to produce decent horsepower in a ROAD car! If you have a Weber, use it. Why spend money on new setups? It's not an all out horsepower contest. is it?    

sure but you are not getting the best out of the carb and and the airflow (air fuel mix) is not good.

 

fuel economy on a weber for every day use is very poor just from the design of the carb, sounds great though, but at the same time on a long cruse down a motorway they can be very good on the economy as you are not using the accelerator pump.

 

PS i love webers but i would not bother with one on a road car again.

[mikal]

Fuel economy is not great. About 30 mpg at 110 km/h. That's why I need 2 tanks for long distance driving in Oz...

[tb205gti]

god that looks rough. where are the big O rings?  or did they just put some RTV between manifold and carb? 

 

I just quickly mated it to the manifold, no gasket used, and only in place with a single bolt - purely for getting the pictures taken with the manifold.

 

Others: HIF44 is not an option, I have the three options stated in the original post.

 

..I think I'll got for the double HS4 setup, but I have to try the weber to see how it fares now that you all seem to hate webers ;)

[racingbob]

if you want the best out of it you need more than a slightly ported head particularly using a 276 cam and a weber