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Why won't this fit a B18? 444-544

posted by  Bob Wennerstrom on  Fri Nov 15 01:30 CST 2002
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last visit: Fri Jul 15 12:01 CST 2011
[RELATED]

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&item=1872239108

Man this would be a cool thing to have. Are the intake ports different for B18 or what?
--
82 intercooled turbowagon 235K








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    Why won't this fit a B18? 444-544

    posted by  someone claiming to be Ron Kwas on  Fri Nov 15 01:54 CST 2002 [RELATED]

    Bob;

    That would be fun to play with...but the intake ports are different from B16 to B18...I wonder if an OE alu B18 manifold may be adaptable?

    Cheers








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      Why won't this fit a B18? 444-544

      posted by  matt b on  Fri Nov 15 02:30 CST 2002
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      last visit: Tue Oct 14 16:33 CST 2014
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      Maybe adaptable, but not easily... The B16 only has 2 intake ports, and 1 1/2" SUs, whereas we all know the B18 has 4 intakes, and 1 3/4 carbs.

      But...they did make 'em for the B18/20, and it may well be identical except for the intake.

      That said though, from what I heard those are good for about 2-3 pounds of boost. Not much in an engine that is already pretty hopped up from the factory. Those were much more useful on the silly british "sports cars" that had all of 40 or 50 horse from teh factory....

      ANd...although the one on ehay looks awful nice, its also pretty pricey.... Perhaps worth it as a novelty, but as a true performance upgrade....you'd do better with normally aspirated upgrades...

      Just my opinion... I've never worked with one of those...

      -matt








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      Why won't this fit a B18? 444-544

      posted by  JohnMc on  Fri Nov 15 02:27 CST 2002
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      last visit: Thu Oct 23 07:42 CST 2014
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      If you bought it you could probably dredge up a proper manifold somewhere. I was very curious about that thing too, but I've heard the style of compressor is uses suffers from wear, even when supplied with a steady diet of 'Marvel Mystery Oil'. I'd probably spend a couple of extra grand and get a kit from John Parker. That has a modern, long lasting blower and an intercooler. Of course, I don't know if he is actually shipping or not. But I think one would work quite well with a low compression 'F' head...








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        Why won't this fit a B18? 444-544

        posted by  someone claiming to be Ron Kwas on  Fri Nov 15 07:41 CST 2002 [RELATED]

        Bob;

        I have to agree with Matt, John, and George...a neat looking, maybe even fun engineering exercise but with questionable longevity/reliabilty and performance gain...and not exactly cheap either...

        Cheers








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        Why won't this fit a B18? 444-544

        posted by  walrus3 on  Fri Nov 15 02:49 CST 2002
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        last visit: Mon Dec 2 14:20 CST 2013
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        You might also want to change the pulley ratio as the displacement is about
        20% greater on the engine most folks use. Therefore a 2-3 psi boost
        on a B16 would maybe be about 0 boost on a B20.
        --
        George Downs, The "original" Walrus3, Bartlesville, Oklahoma








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          Why won't this fit a B18? 444-544

          posted by  iadr on  Fri Nov 15 18:15 CST 2002
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          last visit: Wed Jan 1 18:39 CST 2014
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          I ran mine on a 544 (lightest Volvo @ 2280lbs tested weight).

          I ran it at 18% overdriven, and got 5.5 psi.

          The case size (and thus per- revolution output) is greater on b18 type Judson.

          The blades are an issue. The original material was marginally function with leaded gas, & essentially non-functional with unleaded. George Folchi is *the* expert on these things, runs one on some British engine in a TVR, and rebuilds them. If he has one it shouldn't be much more than what the buy-it-now was. He has a new blade material.

          If you notice, the seller has one for a VW, and wants double the $ for it. They are "collectible".

          My engine was a b18 bored to +.020 b20, with stock head and exhaust, vv61 IPD Cam. It did go shockingly well and the low rpm throttle response was so nice. My stroker set up does the same thing, and gets double the fuel mileage. Surprisingly, detonation was never a major issue, even with mid 9's compression.







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