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Thread: Optimistic sellers

  1. #14626
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    Quote Originally Posted by F5 Dave View Post
    I remember reading about the heron heads and thinking maybe a 500 might be ok. Back in the late 80s.

    But fuck having witnessed how pedestrian a V50 is a 350 of similar ilk just holds no appeal. And bear in mind my various frames of reference, being a small 2 stroke fanatic. I think it is easy to forget how sad some of these small 4 strokes are when shown an actual road scenario outside, I'm going to say the port hill road, because I've never ridden it I don't think.
    They're a lot lighter than a V50. Probably not a lot slower than a modern 250 Kawasaki. The attraction is the handling. Very, very good for the period.

    I did a later Dart for BEARS racing. Same motor, alloy frame. The key is to get the squish tight on the Heron heads. Less than 1mm for preference. They can go.

  2. #14627
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    Quote Originally Posted by F5 Dave View Post

    But this is neither of those places so it's just an obscure underpowered Italian bike with a large price tag. That's 916 money. Quite literally a few listings up.
    not many people can ride a 916 to their potential nor want to. With all the hipsters out there ready to buy a personality this will be quite popular these days too. Wonder how they woud stack up against a modern 500 cc harley?

  3. #14628
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    Quote Originally Posted by jellywrestler View Post
    not many people can ride a 916 to their potential nor want to. With all the hipsters out there ready to buy a personality this will be quite popular these days too. Wonder how they woud stack up against a modern 500 cc harley?
    I have ridden a 500cc Harley a bit and it was surprisingly not a bad bike. It had ground clearance issues which you'd expect given the styling and the low low seat.

    That Morini does nothing for me but good luck to someone who wants to own it.
    I thought elections were decided by angry posts on social media. - F5 Dave

  4. #14629
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    25th March 2004 - 17:22
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    Not many can ride a 600 to their potential, but plenty buy litre bikes and Busas.

    A 916 is pretty, iconic, and even usable in a Sunday ride sort of pigeonhole.

    It's cool and dangerous and therefore so am I. Vs, here's my 350. I'm not saying it isn't desirable to the right person, and more power to them (ohh, unintended ironing) but 9 out of 10 cats will be pointing to the 916 so the money follows that.

    Let's see how quick it goes.
    Don't you look at my accountant.
    He's the only one I've got.

  5. #14630
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    Quote Originally Posted by F5 Dave View Post

    Let's see how quick it goes.
    all the way to the "h" on "mph"
    I thought elections were decided by angry posts on social media. - F5 Dave

  6. #14631
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    Vega Italian instruments? Probably swings from 40 to h
    Don't you look at my accountant.
    He's the only one I've got.

  7. #14632
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    3rd February 2004 - 08:11
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    Quote Originally Posted by Grumph View Post
    . The key is to get the squish tight on the Heron heads. Less than 1mm for preference. They can go.
    Heron head design - a flat head with a bowl in the piston (eg crossflow escort) - other than a much cheaper to build cylinder head, what other advantages are there to offset the much heavier piston?
    it's not a bad thing till you throw a KLR into the mix.
    those cheap ass bitches can do anything with ductape.
    (PostalDave on ADVrider)

  8. #14633
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    20th January 2010 - 14:41
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    Quote Originally Posted by pete376403 View Post
    Heron head design - a flat head with a bowl in the piston (eg crossflow escort) - other than a much cheaper to build cylinder head, what other advantages are there to offset the much heavier piston?
    my take apart from the cheapness, As a piston is easier to accurately machine, than a cylinder it allowed tighter control of tolerances so high comp without blowing the shit up was easier. so you could have safe high comp and good squish for great efficiency esp compared to std heads of the time.
    Casting dome heads are pretty variable even now in regards to sizes if not machined all over

    afaik The V12 jags also had them also.



    Kinky is using a feather. Perverted is using the whole chicken

  9. #14634
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    But heavy thus limiting revs.

    Especially crucial when other design constraints wasted every other down stroke of potential power output. I mean let's pull your pants down and put on a blindfold.
    Don't you look at my accountant.
    He's the only one I've got.

  10. #14635
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    Quote Originally Posted by husaberg View Post
    my take apart from the cheapness, As a piston is easier to accurately machine, than a cylinder it allowed tighter control of tolerances so high comp without blowing the shit up was easier. so you could have safe high comp and good squish for great efficiency esp compared to std heads of the time.
    Casting dome heads are pretty variable even now in regards to sizes if not machined all over

    afaik The V12 jags also had them also.
    The first Jag V12 had Heron heads but the later Mays "Fireball" heads had combustion chambers with flat top pistons, which increased efficiency and gave better fuel consumption.
    https://www.jaguarheritage.com/jagua...ng/v12-engine/
    it's not a bad thing till you throw a KLR into the mix.
    those cheap ass bitches can do anything with ductape.
    (PostalDave on ADVrider)

  11. #14636
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    Quote Originally Posted by pete376403 View Post
    The first Jag V12 had Heron heads but the later Mays "Fireball" heads had combustion chambers with flat top pistons, which increased efficiency and gave better fuel consumption.
    https://www.jaguarheritage.com/jagua...ng/v12-engine/
    oh cool
    i can remember being told there was a version of the escort crossflow that the rally guys used to chase that had a small combustion chamber with a bowl rather than the flat head.
    Rumor has it they used to use that with flat top pistons. Obviously no BDA or rtary i was told it was a great improvement
    I had the period works Ford rally prep book and there was no mention of it though so i don't know if its true
    I have never seen one myself or know if its true. But i knew there was a 900cc escort we never got in NZ and all the cross flows had the same bore and only the stroke varied.
    I wish i had kept my MK1 2 door.
    One of dads friends used t run jags he has two buried nose down outside his house
    he said the XJ12 used twice the petrol the6 did getting to CHCH only a few minutes faster.



    Kinky is using a feather. Perverted is using the whole chicken

  12. #14637
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    Quote Originally Posted by pete376403 View Post
    Heron head design - a flat head with a bowl in the piston (eg crossflow escort) - other than a much cheaper to build cylinder head, what other advantages are there to offset the much heavier piston?
    The Heron head is said to be less sensitive to fuel quality. Most engines using it came out around the period when pump petrol was generally shit so there was some sense to using that design. Before ethanol became popular with the petrol companies, a lot of engines had detonation and/or pre-ignition on regular pump gas.

  13. #14638
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    The best way to forget all your troubles is to wear tight underpants.

  14. #14639
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    25th March 2004 - 17:22
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    Ooh some anger issues there. He'll be asking himself;

    WHY could I not get it to run properly?
    WHY am I such a loser that no one likes me even though I tell them they must?
    WHY is no one buying this bike?
    Don't you look at my accountant.
    He's the only one I've got.

  15. #14640
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    https://www.trademe.co.nz/a/motors/m...9?bof=XyiCtF9u

    Doesnt go, rego hold expired.

    $2500.
    Fuk
    Right
    Off.
    Don't you look at my accountant.
    He's the only one I've got.

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