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Replacement cards Holley or Webber? Print
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Martins Spitfire
March 1, 2017, 11:38am Report to Moderator
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My Stag seems to be running well with its Strombergs but it all seems very complicated and convoluted. I am thinking about changes to a Stagwebber webber conversion to replace the Strombergs. Or should I look at a Holley

Couple of questions;

Does anyone have any preference either way?

Which one is simpler to do?

How do they affect fuel consumptions?

How do they affect power?

Do they sound any different?

As you can see I am weighing up the pros and cons. In an ideal world I buy the kit and it swaps over in a couple of hours bob's your uncle?

Martin

Haywards Heath
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RobPearce
March 1, 2017, 1:32pm Report to Moderator

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Why?

I mean, seriously? You actually think a webber or holley is simpler than strombergs? Weird!

If it's running well as Triumph intended then leave it alone. Meddling will only bring trouble.


Current fleet
1967 Vitesse 2L conv "Tessa"
1970 Spitfire Mk3 (project) "Toby"
1972 GT6 Mk3
Not enough time or space
Recently sold:
1972 2.5 PI estate "Harry" (gone to russell on here)
1973 Toledo 2-door "Spike" (gone to a club official)
Used to have:
1968 Vitesse 2L saloon
1980 Dolomite 1500
1977 Dolomite 1850
1980 Dolomite Sprint
1982 TR7 DHC Sprint
1975 2500S saloon
1971 Herald 13/60 Estate (with 1500 Spit engine)
1975 Stag
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StagNL
March 1, 2017, 3:25pm Report to Moderator


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As Rob says, why, especially if it is running fine?
Strombergs are fairly simple carbs and setting them up is not at all a difficult thing to do as long as you follow the workshop manual.
It may look complicated but it is set out step by step.  Once set up , they also hold their tune for a long time -  some argue longer than most carbs.

Julian


Triumph Stag, Man. OD, RHD, Datsun 280ZX halfshafts and Subaru Legacy/Forrester R160 differential, Revolution 15" alloys. Fully rebuilt 2014.  
Triumph 2500TC, LHD, Autobox, PAS, Sunroof, Cosmic alloys.
CT Holland member.
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south sea pommie in aussie
March 4, 2017, 7:11am Report to Moderator

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The Holley is a much simpler carby to work on than those  horrible strombergs that you poms seem to be besotted with More power better throttle response.But they have their issues .I actually prefer the edelbrock  to anything else  .No fuel leaks as there aren't any gaskets below fuel level.Bolt on straight out of the box .Electric or manual choke .4 barrel size to suit the 3 litre. Economy plus no cold start problems or hot weather vaporising.Needles .jets and vacuum horns all easy to change if you want to play ,but i have fitted these to many v8s and havent had to bother with tuning as they made everything else look so old hat.    Dare to be different and you wont regret it.They are quite cheap too and made by weber.
By the way just to qualify myself i have owned over 85 cars and many of them English as i grew up i NZ ,im also a mechanic with 45 years experience.My belief is that you can always improve on the way it was made as they were all made to a budget and compromise.


1x2.5 pi,
5x 2500tc,
1x1967 mustang coupe, 440 hp natural 351 w
Toyota ke 30 khanacross and hillclimb machine .
another 2500 tc
grand cherokee diesel
another jeep grand cherokee diesel  
Honda prelude
HJ 45 diesel cruiser
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Martins Spitfire
March 4, 2017, 8:56pm Report to Moderator
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Two against and one for interesting.

I see both sides but I am in a quandary!  

thanks for the responses.

Martin
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south sea pommie in aussie
March 5, 2017, 9:54am Report to Moderator

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Try the edelbrock mate you wont regret it.If you look at  Stagnl and his  list of mods to  the  stag ,you will see that they are quite extensive yet he advocates keeping the crap strombergs .


1x2.5 pi,
5x 2500tc,
1x1967 mustang coupe, 440 hp natural 351 w
Toyota ke 30 khanacross and hillclimb machine .
another 2500 tc
grand cherokee diesel
another jeep grand cherokee diesel  
Honda prelude
HJ 45 diesel cruiser
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StagNL
March 6, 2017, 5:58am Report to Moderator


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^^^^^Yet I am am in the process of fitting EFI..... project is slow due to other commitments...

Julian


Triumph Stag, Man. OD, RHD, Datsun 280ZX halfshafts and Subaru Legacy/Forrester R160 differential, Revolution 15" alloys. Fully rebuilt 2014.  
Triumph 2500TC, LHD, Autobox, PAS, Sunroof, Cosmic alloys.
CT Holland member.
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Triumphant Acclaim
March 10, 2017, 11:43am Report to Moderator

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Stick to the Strommies. Both the alternatives will cause crankcase breathing problems that you never knew you had, then you are in the world of oil peeing out everywhere, pcv's and catch tanks. 38 Weber has smaller intakes and Holley much bigger than Strommies. Noisy sucking intakes.

Believe me learning how to adjust Strommies is far easier than sorting the side effects of these so called simple carbs.

Fitting a kit is the start of your problems.
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CharliesStag
March 19, 2017, 5:22am Report to Moderator

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IMHO Get the Holley .

There are now PCV kits (or other measures) out there to get around the issues in addition to improving what Triumph did back in the day.

I had a Holley from Monarch on mine and TBH it was great.  It still did around 30MPG on a run to London and back and it had quite a few ponies.  It was easier to start and it didn't suffer from diaphragms splitting or the engine flooding.

Being brand new (IMO I wouldn't do it any other way, read on) you also cut out vacuum leaks, something that plagues Strommies and SUs unless they are rebuilt correctly ; simply replacing the throttle shafts does not cure the leaks ; I know I've bought a couple of cars with new shafts but with monumentally shot bushes.

In the 3 years I had the Stag the carb was one thing I never touched again with a 5,000 miles or so being covered around a year.

I will admit that looking into the sorting out the breathing may well be worth your while.

I wonder how many people above have actually used the Holley setup or gone off secondary information.

When I was looking alot of the issues seemed to come from people buying other people's mess (i.e secodhand carbs and linkages, and expecting them to work perfectly).


Ex Stag TV8, Dolly Sprint and Spitfire 1500 owned.

Now with the following:
1985 Ford Escort RS Turbo Series 1 1.8
2003 RenaultSport Clio 172 Cup(ish)
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mikeyb
March 19, 2017, 8:42am Report to Moderator

Maldon, Essex :-)
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I read this thread with great interest as the Strommies on my 160k mile Stag are knackered.  The cost of rebuild/replacement is not vastly different to the cost of a new Stagweber conversion. The claims of no worse power delivery but better fuel economy do tempt me. However I do not want to spend a big chunk of money and end up being disappointed with the end result as has happened with some of my past upgrades!

Edelbrooks do not seem to be common in the UK?


http://triumphandadversity.blogspot.com
http://mikeyb.weebly.com/

CT Drivers Challenge Champ '08 '09
CT Drivers Champ '12

Serial Triumph Offender, max out at 25 years ago!
Current Triumph count 17 16 15 14 13 14 12 13 12 13 14 15

On the road:
67 Mk3 Spit - been too many places to list!
72 Stag - Nachrict Nov '07 & '09, Mar '10, 10CR '09, 11,��LCC '10
76 Sprint - RBRR 2010 finisher, many Road Rallies, Nachrict Mar '11, HCR'11, Little Devils '11
64 Herald Rally Car - 2 autotest, 8 Rally Sprints, 3 Road Rallies, HCR '09, 4 Autosolo, Cadwell Track Day
67 GT6 Mk1

Broken: 72 Mk2 PI with TR6 engine - Nachrict Feb & Nov '06, Nachrict Feb '07, HCR '08, RBRR '08, LCC '07, '08, '09

NY Res�2013

1) Sell a few��moderns
2) Mend my Triumphs
3) Drive them lots
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Triumphant Acclaim
March 22, 2017, 5:35pm Report to Moderator

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Rebuilt Strommies will cost you far less and work well. If you go the Weber route, you will have to add on cost of air filter and probably breather kit which may not work on your engine if it is breathing heavily. Not a problem you encounter with the Strommies. I never had better economy. Initial take off seems good as linkage is tuned to give a large throttle opening with small pedal movement, giving the impression of better performance. In fact the choke sizes are smaller than Strommies. All IMHO of course.
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roger keys
March 24, 2017, 10:20pm Report to Moderator

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Ive now got Charliesstag's car (above)

Agreed. Holley is good. And no issues, At least with the carb.

Strombergs and SU's are fine, but really do blunt performance. I still remember the day i removed the SU's off my sprint and bolted on a set of webers. Why i didn't do it before, i really dont know.


1980 Triumph Dolomite Sprint - broken
1974 Triumph Stag - 4 speed auto - sort of working
1970 Triumph 2000 - 3.5 V8 - in bits
1973 Triumph Stag - 4 speed auto.
1969 Dodge Charger RT/SE, complete.
2017 HSV Maloo
2016 Ford Mustang

RBRR 1990, 1992, 1994, 1996, 1998, 2000, 2002, 2004, 2006, 2008, 2010, 2014, 2016
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thescrapman
March 25, 2017, 11:37am Report to Moderator

Colin Wake
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So I read this as...

Engine and carbs good, do not touch.
Engine good, carbs crap, contemplate a Holley
Engine crap, carbs crap, cheap solution - get Strombergs rebuilt
Engine crap, carbs crap, expensive solution - get engine rebuilt and buy a Holley.


Schadenfreude expert and collector of assorted rusty Triumphs on the Essex/Suffolk Border.

2010, 2011, 2013, 2015 and 2016 CT Navigators Championship winner.

10CR 2005, 2007, 2009, 2011 2013 - RBRR 1990, 2006, 2008, 2010, 2012, 2014, 2016 - Nachtrit 2006, 2007, 2008, 2009, 2012 - Chinese rally 2007, 2008, 2009, 2010, 2011 - HCR 2009, 2011, 2012, 2013 (3rd place), 2014. 2015, 2017

On the road.
1968 Spitfire Mk3 : 1973 TR6 : 1967 Herald 1200 Estate 1970 : 1968 Mk1 2.5PI 1968
Off the road
1967 Moss Monaco (Mk1 GT6 based) : 1970 Spitfire Mk4 : 1970 Mk2 2000 auto  : 1964 Mk1 2000  : Mk2 2.5PI
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PJM
March 27, 2017, 8:41pm Report to Moderator


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I have a Holly in the shed taken off a stag, runs fine, complete with pancake filter, open to offers


PJM (Ginger, Triumph Stag Man O/D, Strombergs)
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Yogi Bear
March 29, 2017, 6:21pm Report to Moderator

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I fitted a Stagweber to my Stag after endless problems trying to get it to run properly with the original carbs. During fitting of the Weber I found a fractured stud which was probably drawing air and upsetting the existing setup.

The Stagweber was great by comparison but I absolutely hated the induction roar from the air filter I had specified and there was little or no performance benefit. I eventually picked up a deal on refurbished standard carbs and I am much happier being back to standard spec, and sound.

If anyone is interested in a full Stagweber kit that has done under 600 miles please pm me.
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