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 Weber 34ICH conversion
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Zagato
V4 Mad

United Kingdom
740 Posts

Posted - 19 Apr 2014 :  08:08:26 Show Profile Reply with Quote
Thinking about this and realising I have probably just insulted half the forum with chrome or early air filters ...

I seem to remember you have to put on an early type rocker cover with the bracket on the correct side for the filter and get hold of a rubber flange which allows the later air filter to fit on top of the Webber. Could be totally wrong about all this though, it's been a long time since I looked into it all.

1977 96L Opal Green
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pchristy
V4 Guru

United Kingdom
1737 Posts

Posted - 19 Apr 2014 :  08:56:09 Show Profile Reply with Quote
I think the "new" Webers are made in Spain.

--
Pete
"Duct tape is like the Force: It has a light side and a dark side, and it binds the Universe together!"
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beta
V4 Fanatic

Ireland
270 Posts

Posted - 19 Apr 2014 :  12:30:18 Show Profile Reply with Quote
I am running a correctly jetted Weber 34 ICH on my 1500.

I used to dislike the look of the chrome filters...but have fitted one to the Weber - and have found that with the single choke carb I actually like the bit of extra induction noise that they bring and can now forgive the look of the filter a bit !
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Derek
V4 Guru

United Kingdom
1778 Posts

Posted - 19 Apr 2014 :  13:46:16 Show Profile Reply with Quote
The rubber sealing ring supplied with the Weber fits the late plastic Saab filter so I guess it will also fit the earlier ones used on cars with a FoMoCo. I'd think that freeze problems would be worse with a small chrome filter, as the big Saab one does trap the warm air from the V of the engine.
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tommygoldy
V4 Fan

142 Posts

Posted - 19 Apr 2014 :  17:03:45 Show Profile Reply with Quote
Finally got around to having a go at getting the Weber fitted today. I've removed the FoMoCo and bypassed the auto-choke by running a new single length of coolant hose, so that's a start.

Predictably I've run in to a few (silly) issues already, and am regretting not getting the kit from FRC. I wonder if it would have solved my issues? Anyway here goes:

I ordered the thick block gasket from FRC. It appears to have been an essential purchase, as this setup still only just allows the fuel line to clear the hose exiting the thermostat housing. If it's too tight, is it possible to adjust the angle of the elbow and use a longer hose or is this best left alone? Any issues with adding more gaskets? I have the original metal one and some new old stock asbestos ones here.

Using the block gasket it turns out I need longer studs. Am I right in thinking locking 2 nuts together and getting a spanner on the lower one is the best way to remove? Where can I get replacements and is there a correct procedure for installing?

The standard linkage looks like it could be made to work, but at its current length it won't allow the throttle to close completely. I suppose I could bend it (or substitute a bit of old coat hanger). Would welcome your thoughts.

Finally, the vacuum advance hose is a different diameter to the fitting on the carb (assuming that's what it is). It looks to be in a tight spot and needs a longer hose to reach it. Hmmm.
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tommygoldy
V4 Fan

142 Posts

Posted - 10 May 2014 :  12:26:55 Show Profile Reply with Quote
Got longer studs so had another look today. It's too tight where the fuel comes in to the carburetor. It looks like the casting of the Weber is designed so that the fuel line can (potentially) come in at different angles, and have read elsewhere that other versions of the 34ICH differ in this respect.

Deliberating whether to add a second block gasket or just try to get another (different) 34ICH. Would greatly appreciate some advice!








Edited by - tommygoldy on 10 May 2014 12:28:27
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Derek
V4 Guru

United Kingdom
1778 Posts

Posted - 11 May 2014 :  19:50:34 Show Profile Reply with Quote
I will swap you a new top with the fuel inlet in the position that's 90 to yours if you think that would solve your problem.
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tommygoldy
V4 Fan

142 Posts

Posted - 11 May 2014 :  21:20:01 Show Profile Reply with Quote
quote:
Originally posted by Derek
I will swap you a new top with the fuel inlet in the position that's 90 to yours if you think that would solve your problem.



That's a very kind offer, thank you. I'll have another look tomorrow morning and get back to you.
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tommygoldy
V4 Fan

142 Posts

Posted - 25 May 2014 :  20:23:33 Show Profile Reply with Quote
Bloody hell! It don't half go now!

...Finally back on the road with Weber fitted. Starts first turn of the key (unlike before) and runs very sweet considering I've not attempted to fine tune the setup. Much better than the FoMoCo. Makes a great noise too (especially ferocious as there's currently no air filter in place). I'm impressed how much quicker the car feels, and seriously tempted to put a Jetex exhaust on to free up that end of things.

Still having a couple of issues, for one thing the original air filter won't fit as the top of the carb is wider than the FoMoCo. It looks like it has an extra sleeve (the shiny alloy part) fitted to it. It's separate to the main casting but I can't work out whether there's any way to remove it. Interestingly enough the link below has a pic of the carb with the sleeve removed, I wonder if it's just a press fit? Maybe it would prise off if I was a bit braver... Any thoughts?

http://www.jameng.com/products/34-ICH%252dmanual-choke%2C-1%252dbbl..html
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Derek
V4 Guru

United Kingdom
1778 Posts

Posted - 25 May 2014 :  22:44:58 Show Profile Reply with Quote
Yes the alloy ring is just an interference fit and will tap off if needed. As I said above, the standard late plastic Saab filter and rubber sealing ring will fit straight on if you use the alloy ring on the carb, I didn't use it but tried it on my filter and the car was sold with a 27ICH.
I saw a couple of 27ICH at the Enfield show today marked up at 60. They were labelled as being for Ford Capri and in the Weber box. Interesting that the fuel inlet was in the 90 position, fine for the V4. Not seen them in that position before.
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tommygoldy
V4 Fan

142 Posts

Posted - 26 May 2014 :  18:08:00 Show Profile Reply with Quote
Thanks Derek, I'll tap the ring off and see if the original filter fits. Mine is the metal type (earlier?).

60's a bargain. A bit gutted I missed the Enfield show...forgot all about it.
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andydeans3
V4 Mad

United Kingdom
940 Posts

Posted - 26 May 2014 :  19:38:50 Show Profile Reply with Quote
Tommygoldy

Read with interest your comments about how the weber transformed your 96. I recently fitted a twin choke to mine, to replace a twin choke solex. I also felt it was a transformation. What a difference! I had none of the fitting problems that you've encountered. It really was "plug and play".
Anthony at FRC gave excellent service.

Only issue I had was when I fired her up for the first time a fire started in the throat of the carb. Went out after about 10 seconds, but gave me a hell of a fright, I can tell you.
My car has a jetex exhaust,which I am thinking about replacing with a custom job, to get better gas flow. There is nothing wrong with the Jetex, it looks in good nick. When I get round to this, I will be selling the Jetex.

Andy



1978 LHD SAAB 96
1978 MGB Roadster
2008 LHD "Classic" Renault Twingo
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tommygoldy
V4 Fan

142 Posts

Posted - 26 May 2014 :  22:27:12 Show Profile Reply with Quote
quote:
Originally posted by andydeans3
Tommygoldy

Read with interest your comments about how the weber transformed your 96. I recently fitted a twin choke to mine, to replace a twin choke solex. I also felt it was a transformation. What a difference! I had none of the fitting problems that you've encountered. It really was "plug and play".
Anthony at FRC gave excellent service.

Only issue I had was when I fired her up for the first time a fire started in the throat of the carb. Went out after about 10 seconds, but gave me a hell of a fright, I can tell you.
My car has a jetex exhaust,which I am thinking about replacing with a custom job, to get better gas flow. There is nothing wrong with the Jetex, it looks in good nick. When I get round to this, I will be selling the Jetex.

Andy



Well, I think my issues have been half bad luck and half my own ineptitude, but it's quite rewarding to have problems and then solve them. The trouble is that at the moment I have so little time for spannering that it takes me a month to do a full day's work on the car... If I were to do it again I would certainly speak to FRC first.

As to your Jetex, I would be interested, but you are quite a long way away from me by the look of things!
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john-saab
Administrator

United Kingdom
2647 Posts

Posted - 05 Jun 2014 :  06:47:05 Show Profile Reply with Quote
Coming soon...a "how to" on adapting the earlier air filter to fit a Weber 34ich (it's not a direct fit)...just a little more fettling to sort the height issue but a very good alternative to aftermarket filters with an almost stock look.


'72 95 (The Flying Banana),'72 96(Bridget),'72 96 (green one)'73 96 (Vernon),'74 95 (Veronica)
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UK_Sub
Moderator

United Kingdom
2103 Posts

Posted - 05 Jun 2014 :  11:48:18 Show Profile Reply with Quote
Hi John,

Any chance you could make that article available for the next issue of the Saab Enthusiast - we're in desperate need of technical articles!
I think your heater box renewal was the last one we ran (and something I'd like to do in the near future).


Cheers,

Simon
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