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Amal Carb Alternative
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Iain
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July 4, 2016 - 12:31 pm
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Following on from other posts regarding Mikuni and DellOrto carbs, here's another alternative.

 

I have been building a D7 trials bike and had a new unused Jikov carb for a CZ 175, they cost £28 from JawaShop in Czech Republic.

 

Connected the fuel lines at the weekend and three kicks later it started and ticked over.

 

The CZ 175 is a similar slow revving two stroke so I thought it should work, bolted flanged connections as well, bolts straight onto a D10 barrel.

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Mags 1
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July 4, 2016 - 1:16 pm
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You've beat me to it, I've got a complete one somewhere and have often thought about fitting it to the D7 to see what might come of it. It's in good condition too, should be an improvement.

Four now on the road and at least several in bits.

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Piquet
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July 4, 2016 - 1:23 pm
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This one?

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I'm not a complete idiot ............................................ some parts are missing.

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Iain
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July 5, 2016 - 12:10 pm
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Yes that's it.

Don't know what the exchange rate is at the moment but about £30, takes just over a week for the parts to come from Czech Rep.

I also fitted a 35mm diameter clamp on air fiter for a pit bike - £5 from ebay

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Mags 1
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July 5, 2016 - 7:47 pm
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Problem though is, which one to choose? I had the rather bumptious idea that there were only one or two, at most.

Four now on the road and at least several in bits.

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Piquet
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July 5, 2016 - 10:08 pm
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There is only one on that page!

I'm not a complete idiot ............................................ some parts are missing.

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Iain
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July 6, 2016 - 8:25 am
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There is a huge list that the carb is supposed to fit, but there is only one option when you order.

 

A CZ 175 has a 26mm carb, it came jetted for a 175 hence it didn't work too well on my CZ 125 but works fine on the D7.

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Mags 1
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July 6, 2016 - 11:19 am
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Piquet said
There is only one on that page!  

I thought that was just an example? Was looking through the lists of course, but if it's the one, that makes it much much easier.

Are we going on venturi size alone here?

Four now on the road and at least several in bits.

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Anderzander
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July 6, 2016 - 12:12 pm
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That carb has quite a good period look about it. Does it have a pilot circuit ? 

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Iain
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July 6, 2016 - 12:22 pm
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Yes it idles away perfectly, it also has a ticker pin.

I should maybe have said that my D7 trials bike has a D10 engine in it, so I suppose it is a straight swap for a 26mm Amal

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Bob Goldie
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April 13, 2017 - 10:24 pm
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Iain, are you still happy with your carb from the Jawa shop? I'm rebuilding a B175 engine and considering replacing the old well worn Amal concentric, maybe buying a Mikuni, Amal or Wassel copy at Stafford. Then I saw this thread and thought "What a bargain, or is it?"

At 34 quid or so, this carb seems too good to be true. How was starting during those cold Aberdeen winter days - is there a choke on the carb? I'm not too bothered about originality and being a good Scot, I don't want to waste my money if I don't have to!

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two-stroke
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April 14, 2017 - 10:05 am
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The D7 and B175 are different beasts, the B175 being more highly tuned with a bigger inlet port. I'd be surprised if a carb suited to the D7 performed as well on a B175.

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BASIL
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April 14, 2017 - 10:58 am
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Hi, I have a D10 engined B175 which has a B175 head on it may give one of these carbs a go as the Amal I have on it is quite worn. Regards Basil.

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Bob Goldie
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April 15, 2017 - 10:06 pm
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Having read some of the threads and posts about the d14 and b175 having higher compression than the d10 and that Amal recommend different specs for the d14 and b175 carbs, I think I will play safe and have a new Amal. Does anyone know what the difference is between the standard and premier range of Amals? 

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Piquet
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April 15, 2017 - 10:42 pm
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600 Series Premier carburetters with the body and float bowl cast in aluminium. The carburetters include all the parts developed by AMAL for the Premier carburetter – hard anodised aluminium throttle valve, ethanol resistant Stay-up float, removable pilot Jet and aluminium needle valve

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I'm not a complete idiot ............................................ some parts are missing.

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Mags 1
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April 15, 2017 - 10:48 pm
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I've often wondered if folk in the Czech Republic meter their carb jets differently to us?

I understood that they were different bikes and models, cc's etc, eventually, but surely a 125 can't be expected to run on 175 jetting and vice versa?

I will try my CZ carb out one day on my D7 soon though.

Four now on the road and at least several in bits.

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Piquet
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April 15, 2017 - 10:52 pm
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Iain said
Following on from other posts regarding Mikuni and DellOrto carbs, here's another alternative.

 

I have been building a D7 trials bike and had a new unused Jikov carb for a CZ 175, they cost £28 from JawaShop in Czech Republic.

 

Connected the fuel lines at the weekend and three kicks later it started and ticked over.

 

The CZ 175 is a similar slow revving two stroke so I thought it should work, bolted flanged connections as well, bolts straight onto a D10 barrel.  

I'm not a complete idiot ............................................ some parts are missing.

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