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202 carby set-up WW Stromberg or 350 Holley or ?

Started by Pop's-SS , Mar 21 2012 04:20 PM

Which to choose?

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13 replies to this topic

#1 Pop's-SS

Pops

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Name:Barry
Location:Riverina South West Slopes
Car:1976 Mandarin Red SS Hatchback
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Posted 21 March 2012 - 04:20 PM

G'day All

I am going to fit extractors to my wife's LX Hatch and as I've had a bit of trouble with the single choke Stromberg on it, I want to change to a double choke carby.

Other than the extractors and double choke carby, the motor will be stock.

Thought of WW Stromberg off a 186-S/LC GTR or a 350 Holley so who has this combination on their 202 or is there something better?

Any tuning troubles with any of these as I'd like something reliable and easy to look after.

Regards ... Barry

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#2 Stinga

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Name:Stinga
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Posted 21 March 2012 - 05:01 PM

G'day Barry, not sure about the holley on a standard motor, but i put a ww on my stock 173 in the uc when i fitted extractors, runs great and has a bit more go. pics here...

http://www.gmh-toran...er/page__st__25

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#3 Pop's-SS

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Posted 21 March 2012 - 05:50 PM

G'day Barry, not sure about the holley on a standard motor, but i put a ww on my stock 173 in the uc when i fitted extractors, runs great and has a bit more go. pics here...

http://www.gmh-toran...er/page__st__25

Thanks Stinga :spoton:

I've copied the pics of the set-up as as the 186-S did have a rod linkage for the throttle.

Regards .... Barry

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#4 _Moose lc_

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Posted 23 March 2012 - 10:07 PM

I had a 350 on my hz ute years ago. I couldn't tell you what the jetting or anything was sorry but it ran a treat. It had heaps of go, but wasn't a race car by any means, and didn't use a heap of fuel either. I never checked the L/100km figures because I was happy with it without knowing anything but the weight of my wallet come pay day. It didn't have extractors but that would only effect the jetting and the old Holden site has a far amount of info on it about setting them up. Or was it holdenpedia? Either one, just do a search for 350 Holley and it should show you what you need to know. One guy did a whole page about setting and jetting etc for the red engine range, and has a disclaimer at the start that basically says "this is how I did it and if you don't like 350 hollies on Holdens then don't read this" which I liked because everyone opinion of what should be done is different. It would be bloody boring if everyone did there cars the exact same way after all.

Cheers
Moose

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#5 _Moose lc_

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Posted 23 March 2012 - 10:26 PM

Phew! Thought I'd kied to you there for a second.............but I found it! Here's the link

http://holdenpaedia.....com/350_Holley

Worth a look if nothing else

Cheers

Moose

Damn! That's *lied* by the way. I hate typos! Just too bad I'm so good at them. Lol

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#6 _oldjohnno_

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Posted 24 March 2012 - 07:46 AM

I really doubt that whoever wrote that jetting chart has really tested it on various engine sizes. I've always found - without exception - that a given carb size will want more mainjet when used on a smaller engine and vice-versa. But this chart has it the other way around. WTF?

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#7 _Moron_

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Posted 24 March 2012 - 12:38 PM

Looked at downdraught Webers?

I had an ADM on a Lynx manifold mated to a 173 (now on a 202) which runs pretty well. They came out on the 6 cyl XE/XF Falcons so are pretty common.

Used to run a bit rich on the 173 and so it'd bog down once the secondary opened up but was otherwise pretty reasonable on fuel. Runs even better on the 202 - haven't even touched the jetting. Although I've been told mines off of an ex-cop car and has different jets standard. YMMV.

They are pretty cheap to buy and pretty simple to bolt up in my experience as well.

More info here:
http://holdenpaedia....eber_Conversion
There's also a service manual floating about on www.xfalcon.com

Out of curiosity has anyone tried a Carter 2 barrel off of some of the slant sixes on a Holden? Are they a progressive 2 barrel or are they more like the holley?

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#8 _Moose lc_

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Posted 26 March 2012 - 05:26 PM

I'd have to say, oldjohhno, that if you think the info is wrong, then it probably is from what I've seen and read from you. As I said I have no idea what my old 202 had in the carby I was just happy with the way it ran. I can understand, now that I think about it, why you'd need bigger mains for a smaller engine. Less vacuum right? Because of the smaller ci of the engine. Or am I getting that wrong too? Just asking because I should know, I just seem to have forgotten the basics of cars. Too long working on non carbureted and non piston engines I guess.

Cheers
Moose

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#9 _oldjohnno_

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Posted 26 March 2012 - 06:10 PM

Sounds about right to me. The Weber would be my pick, it suits the manifold layout better than say the Holleys.

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#10 _tyre fryer_

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Posted 27 March 2012 - 05:17 AM

I have had a single strommy then upped to a WW (253 version) and that gave a fair bit more gobut had a flat spot that I chased ofr ages but couldn't kill. I changed to a 34ADM off an XE/XF like has been suggested and it was fantastic, I also added a better cam with this but I think the carby made the most difference, being a progressive twin butterfly carby it used stuff all fuel and had plenty when you gave it to it! the smaller primary makes it so much nicer low down as opposed to the WW that seemed to be drowning it. Also, some models came with an electric choke, was easy to hook up to the ignition wiring and worked a treat. I highly recommend this conversion.

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#11 TerrA LX

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Posted 27 March 2012 - 08:15 AM

Why stop at one weber, add triples to it. :stirpot:

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#12 Pop's-SS

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Name:Barry
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Posted 27 March 2012 - 11:21 AM

Thanks all for those comments but in a few days there will be a reco'd WW strommy/manifold at my door c/o xtreme fuels systems in Campbelltown.

I did have one on my ex HR 186-S Premmie and it worked good.

Hope to have it fitted up with the extractors in about two weeks after the traumatic is replaced.

Regards .... Barry

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#13 enderwigginau

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Name:Grant
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Posted 03 April 2012 - 12:56 PM

I really doubt that whoever wrote that jetting chart has really tested it on various engine sizes. I've always found - without exception - that a given carb size will want more mainjet when used on a smaller engine and vice-versa. But this chart has it the other way around. WTF?

Johnno, you've got it the right way round.

Barry,
you may find you want one size bigger in main jets or you'll get that flat spot mentioned above.
With the 230 stroker I went up two sizes (51 I think).....just look at a comparable size engine that used the WW and use the jets they had. Many Frauds used the WW on big sixes.

If you had been wanting to go Holley, I would have suggested throwing the 350 and using a 390 Vac Sec......runs about the same CFM as a WW when it's only on the primaries. Much better tunability and fuel economy possible with the 390 over the 350.

Mail order??...you could have had a nice drive up the freeway and had a cuppa with the old folks!!

Grant..

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#14 sibhs

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Name:Martin
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Posted 31 August 2012 - 09:30 PM

Thanks all for those comments but in a few days there will be a reco'd WW strommy/manifold at my door c/o xtreme fuels systems in Campbelltown.

I did have one on my ex HR 186-S Premmie and it worked good.

Hope to have it fitted up with the extractors in about two weeks after the traumatic is replaced.

Regards .... Barry

Hi Barry,
have you got any pics of the recon WW on your motor. I'm looking at this set-up too.

Cheers
Marty