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K+B with Irvine Carb

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Old 09-08-2012, 08:59 AM
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dkadous
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Default K+B with Irvine Carb

I bought a box of old engines at a garage sale. One of the engines is a K+B 40 with a Perry pump and an Irvine carb. Back when the K+B 40 was common I had 4 or 5 of them. None of mine were pumpers and all had a perry carb. Anyone know if this pump and carb set up were factory?
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Old 09-08-2012, 12:44 PM
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Default RE: K+B with Irvine Carb

Idont think Irvine ever supplied K&B with carbs.
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Old 09-08-2012, 03:44 PM
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Default RE: K+B with Irvine Carb

The Irvine carb if the Brit jetstream is one of the best should be a super runner do not think you even need the perry pump try it without martin
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Old 09-08-2012, 05:33 PM
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Default RE: K+B with Irvine Carb

As far as I remember it, the K&B pumper engines all has Perry carbs on them. The Perry carbs were special for pumped engines with a more lean midrange and a larger inside bore or venturi as the engine doesn't need to draw fuel with a pump on it. They still sells the special Perry pumper carbs too.


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Old 09-08-2012, 07:03 PM
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Default RE: K+B with Irvine Carb

Probably a a pump added to the regular. The regular carb could handle a pump but the pump carb would not run well without the pump.
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Old 09-08-2012, 09:00 PM
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Default RE: K+B with Irvine Carb

Sometime around 1979 to 1980 I bought a brand new K&B .40 that came equipped with a grey plastic Irvine carb. No pump. It worked perfectly. Shortly after that, K&B started shipping engines with their own metal carb, but it wasn't the Sportster style metal carb. It looked as though it were carved from a big block of aluminum. They worked just fine too.


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Old 09-11-2012, 03:18 PM
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Default RE: K+B with Irvine Carb

My K&B Pumper came with a grey Perry pump carb. I bought some used K&B .40's that had a black Irvine carb, but they were unpumped versions. Being as how they were used there is no telling how they were sent from the factory. I always thought the pumped version made exceptional power for its weight.
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