180 degree headers?
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180 degree headers?

  1. #1
    Senior Member MR.Magoo's Avatar
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    Default 180 degree headers?

    has anyone ever seen any of these on boats?

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  3. #2
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    Default 180 headers

    Quote Originally Posted by MR.Magoo View Post
    has anyone ever seen any of these on boats?
    the SS-24 Bezer out of Maryland runs them. It is my understand that the headers take a different cam, than standard headers

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    There is a Nordskog flat bottom in the v-drive section with them.They sound awesome.

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    MADSKILLZ cj222's Avatar
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    Here is a link to a thread that shows the 180 headers we had on the Schiada we used to own.
    http://www.socaljetboats.com/index.php?topic=4857.0

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    CANT RE MEMBER FARMER JOHN's Avatar
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    Quote Originally Posted by FARMER JOHN View Post
    wow.. who made the headers?
    is the coffee can on the jet for sale??

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    CANT RE MEMBER FARMER JOHN's Avatar
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    i just ended up with them, not sure who made them, they do build lots of back pressure, but they sound cool!

    the coffee can thats a funny story, we had 4 or 5 boats sitting in the shop, all with pop offs on them and my son said dad wtf, how come i don't have a pop off like the other boats, so we made him one, and we just never took it off

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    Senior Member MACHINEHEAD1's Avatar
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    They do work at a certain rpm range. But not so well in others. Kind of like intake tunning. Sure there is the "right cam" to make them work. But if you are looking for the right cam you would be looking for a 4-1 header. I guess jet boats could put a 180 header to go use given their rpm range or lack there of. 180 headers are usually seen on small displacement engines with lots of foward gears to take full advantage of their "peaky" tunning IE GT40.

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    Resident Ford Nut Sleeper CP's Avatar
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    Quote Originally Posted by FARMER JOHN View Post
    i just ended up with them, not sure who made them, they do build lots of back pressure, but they sound cool!

    the coffee can thats a funny story, we had 4 or 5 boats sitting in the shop, all with pop offs on them and my son said dad wtf, how come i don't have a pop off like the other boats, so we made him one, and we just never took it off
    Do 180* headers work best with a 180* crank or will they work with a standard crank better than standard headers so long as the firing order/ exhaust pulses are utilized ?

    S CP

    "Dark Sarcasm"
    Going fast is only half the fun ... what you make go
    fast is the other half.
    " A Government big enough to give you everything you want is big enough to take away everything you have"

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    Senior Member MACHINEHEAD1's Avatar
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    A 180* crank would use a 540* header.

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    BTC cardcarrying member sunkisst's Avatar
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    Default 180*

    Back when I used to drag race cars , I had a friend that had 180* headers on his FE powered 67 Mustang.It did pretty BIG wheelstands and ran the 1/8th mi. in the 6.00 range on a regular basis. He eventually broke the collectors time after time. He then went to some sort of a Hooker Competition Series 4-into-1 header. Guess you know where Im going with with this.Thats right ...NO Faster,No quicker, and no E.T. difference.Now, this was in 1979...Things have changed...My 2 cents As I understood at the time,They were built to even out the 2 cylinders pulses that fire consecutively on the same bank.The 2nd cylinder would be routed to the other collector.Now,remember ,we were young.
    Last edited by sunkisst; 10-19-2009 at 06:41 PM.

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    BTC cardcarrying member sunkisst's Avatar
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    Quote Originally Posted by Sleeper CP View Post
    Do 180* headers work best with a 180* crank or will they work with a standard crank better than standard headers so long as the firing order/ exhaust pulses are utilized ?

    S CP
    Dont know what a 180* crank is,but I doubt Jaime had one of those, even if there was such a thing back then.We were really young in '79.

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    CANT RE MEMBER FARMER JOHN's Avatar
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    IN MY LIMITED EXPERIENCE WITH THESE HEADERS, IF I HAD AN ENGINE I WANTED TO RUN 10,OOO RPM WITH SMALL C.I. THEY PROBABLY WOULD HELP, BUT IN MY CASE THAT AIN'T GOING TO HAPPEN (except the small c.i.), LIKE I SAID I'M NOT AFTER ANY HP GAINS WITH THEM, JUST RUN THEM SOME TIMES JUST TO DO THINGS DIFFERENT

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    Quote Originally Posted by sunkisst View Post
    Dont know what a 180* crank is,but I doubt Jaime had one of those, even if there was such a thing back then.We were really young in '79.
    180* crank ie Flat crank:

    Flat-plane V8 is named according to the shape of the crankshaft, which is in a flat plane. It is very much like two inline-4 engines mated together. In particular, it achieves end-to-end balance because the first piston and last piston of a bank is exactly in the same position, so are the center two pistons. This is just the same as straight-four engines, therefore the sound of flat-plane V8 is usually somewhat like a pair of four-pot engines screaming simultaneously, unlike the rumble-bumble of cross-plane V8s."

    There's probably a simulation on the web somewhere.

    S CP

    "Dark Sarcasm"
    Going fast is only half the fun ... what you make go
    fast is the other half.
    " A Government big enough to give you everything you want is big enough to take away everything you have"

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