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  • Tarvis Posts: 20
    Stock Poster Tarvis
    13 Aug 2019 02:14 PM
    Howdy all,

    Yesterday I got my hands on a supermeg for my 92 evo dyna. Can't wait to install it over the weekend.

    Haven't rejetted a carb before (but do know how to pull it apart and put it back together - no dramas there), so a little unsure with jets to start with.

    I was thinking a 45 or 46 pilot with a 175 main. I've got a CV performance jet needle/emulsion tube coming to replace the stocker, plus a hand full of different jets.

    Dont' want to run it lean to start with - so thought I would see if others on here have any experience jetting.

    Mods are (will be) 2:1 pipe and K&N filter in stock airbox.

    Cheers,
    Tarvis


  • tussuck Posts: 1886
    Melbourne
    Motor Head tussuck
    13 Aug 2019 03:04 PM
    46 and 175 are good starting points (i would also have a 180 and 185 handy and try them out as well).  Plus the needle needs match and the CV perf ones are as good as any (have you looked at their website to see if they have any generic tuning suggestions?)
  • Wideglider Posts: 627
    NSW
    Performance Poster Wideglider
    13 Aug 2019 03:07 PM
    '96 Evo WG. Running a 48 pilot & main jet 185, Thunderslide kit. Mixture screw 3 turns opened.
    Big sucker type Arlen Ness air filter, Bassini Road Rage 2 into 1 pipe, Screamin' Eagle SE3 cam.
    Not too lean (or rich), performs real well.
  • Tarvis Posts: 20
    Stock Poster Tarvis
    13 Aug 2019 08:51 PM
    Thanks Tussuck and Wideglider,

    I'll go with the 46,  pretty sure I have ordered both a 180-185.

    The CV guys have a forum that has some info, I need to do some reading over the week while I wait for their parcel to arrive.

    Cheers,
    Trav
  • tussuck Posts: 1886
    Melbourne
    Motor Head tussuck
    14 Aug 2019 08:03 AM
    Yell out if yah get stuck for jets as I have a few going right up to 230
  • Krash Kinkade Posts: 2554
    Forum Legend Krash Kinkade
    14 Aug 2019 09:23 AM
    Travis your on the right track 46 is the right pj ( normal hard to find a 46 so most get 48 but is a bit on rich side ) if you need to go higher than 200 mj you need a different needle. good luck.
  • John.R Posts: 418
    Stage 1 Poster John.R
    14 Aug 2019 10:28 AM
    From memory im running a 45 and 175 with a Sporty needle (N65C, which I think some of the other companies rub)

    Mine isn't spot on though and still needs tweaking. It's hard to directly compare main jets with diff needles. It seems like everyone running normal needles are about +10 on the mainjet compared tpto sporty needles which give more fuel 1/4 and 1/2 throttle. 

    I had a 48 in but it was wayyy to rich.
  • tussuck Posts: 1886
    Melbourne
    Motor Head tussuck
    14 Aug 2019 10:46 AM
    I'll have a look tonight at home as I'm sure i have some good articles on this from when I turboed the FXR (it runs a Standard CV carb).
  • Tarvis Posts: 20
    Stock Poster Tarvis
    14 Aug 2019 02:53 PM
    Thanks Tussuck, that would be great.


  • perthhog Posts: 1637
    Motor Head perthhog
    14 Aug 2019 04:17 PM
    Just for topic sakes   What pipes are on it now  ?
    I would just put the pipe on first and try it and go from there 
    As the bike has been around for awhile so who knows  what
    Else has been done to it   Has it got a cam,comp,already 
    Upped jets  , ignition system upgrade  ? 

    As I’ve found with one of my evos when I went from 2+2 to 2+1
    I had to lean it a bit  but that motor isn’t stock . 

    I like the cv carb  better all  round  bit more forgiving to tune 

    And if you do have the carb off. May aswell. Swap the inlet fitting 
    Out for a all brass one  whilst it’s off  if it has the original 
    Plastic/ steel type .     Can get them from harley 
  • Tarvis Posts: 20
    Stock Poster Tarvis
    15 Aug 2019 11:02 AM
    hey Perthhog,

    The bike is basically stock right now, with stock 2:2 (with crossover) pipes.

    I bought it last year and most of what I have done is replace old and worn parts so its reliable. This includes (for the engine):
    - new base and head gaskets, rings, new rocker cover rubbers etc;
    - new pushrods, new rocker arms, honed cylinders;
    - carb rebuilt with new seals, float needle, brass fuel inlet (plastic was cracked), idle mixture screw that you can reach.
    - Pretty certain the cam is stock, but it might be on the upgrade list for me later. Probably would want an ignition upgrade at the same time. (and at this point I should be asking myself how much more money to put into a 30 year old bike).

    The bike was a daily ride for someone that used to live over in the west, he had put some bigger pipes on but they were buggered when I bought it hence splashing out on the Supermeg. 

    The bike seems to have very good cranking compression now (or I have a shit battery, one or the other), and pulls decently given its age.

    On a final note, I've had a blast doing the work myself on it. I push paper all day so getting into the shed at night to rebuild the motor was a great mental break from the daily grind.
  • tussuck Posts: 1886
    Melbourne
    Motor Head tussuck
    15 Aug 2019 12:29 PM
    Quoting Tarvis on 15 Aug 2019 11:02 AM
    hey Perthhog,

    The bike is basically stock right now, with stock 2:2 (with crossover) pipes.

    I bought it last year and most of what I have done is replace old and worn parts so its reliable. This includes (for the engine):
    - new base and head gaskets, rings, new rocker cover rubbers etc;
    - new pushrods, new rocker arms, honed cylinders;
    - carb rebuilt with new seals, float needle, brass fuel inlet (plastic was cracked), idle mixture screw that you can reach.
    - Pretty certain the cam is stock, but it might be on the upgrade list for me later. Probably would want an ignition upgrade at the same time. (and at this point I should be asking myself how much more money to put into a 30 year old bike).

    The bike was a daily ride for someone that used to live over in the west, he had put some bigger pipes on but they were buggered when I bought it hence splashing out on the Supermeg. 

    The bike seems to have very good cranking compression now (or I have a shit battery, one or the other), and pulls decently given its age.

    On a final note, I've had a blast doing the work myself on it. I push paper all day so getting into the shed at night to rebuild the motor was a great mental break from the daily grind.
    Same here.... I do all my own work except where the tooling needed is out of my cost bracket (like honing jugs etc)
    - Next time you have the cam cover off have a gander at the cam to see the markings as its pretty easy to figure out what you have.  Also check the breather cam thingy as well as they wear (S&S make a sweet reed valve unit that just sits in the hole)
    - The factory ignition is fine for most uses (its just a bloody spark after all!), however its the RPM limiter changes that an aftermarket one provides that draws the crowd.
    - The carb is REALLY forgiving for jetting, so once your close to the mark riding the bike will let you know (i was tuning a turbo so ended up installed a Wideband O2 sensor and data logger as the fueling at WOT had to be spot on or you just fry pistons)
    - Watch the round rubber seal between the manifold and inlet port on the jug as they perish and you get all sorts of odd issues as a result.
  • Wideglider Posts: 627
    NSW
    Performance Poster Wideglider
    15 Aug 2019 01:38 PM
    Quoting Tarvis on 15 Aug 2019 11:02 AM
    hey Perthhog,

    The bike is basically stock right now, with stock 2:2 (with crossover) pipes.

    I bought it last year and most of what I have done is replace old and worn parts so its reliable. This includes (for the engine):
    - new base and head gaskets, rings, new rocker cover rubbers etc;
    - new pushrods, new rocker arms, honed cylinders;
    - carb rebuilt with new seals, float needle, brass fuel inlet (plastic was cracked), idle mixture screw that you can reach.
    - Pretty certain the cam is stock, but it might be on the upgrade list for me later. Probably would want an ignition upgrade at the same time. (and at this point I should be asking myself how much more money to put into a 30 year old bike).

    The bike was a daily ride for someone that used to live over in the west, he had put some bigger pipes on but they were buggered when I bought it hence splashing out on the Supermeg. 

    The bike seems to have very good cranking compression now (or I have a shit battery, one or the other), and pulls decently given its age.

    On a final note, I've had a blast doing the work myself on it. I push paper all day so getting into the shed at night to rebuild the motor was a great mental break from the daily grind.
    Quoting tussuck on 15 Aug 2019 12:29 PM
    Same here.... I do all my own work except where the tooling needed is out of my cost bracket (like honing jugs etc)
    - Next time you have the cam cover off have a gander at the cam to see the markings as its pretty easy to figure out what you have.  Also check the breather cam thingy as well as they wear (S&S make a sweet reed valve unit that just sits in the hole)
    - The factory ignition is fine for most uses (its just a bloody spark after all!), however its the RPM limiter changes that an aftermarket one provides that draws the crowd.
    - The carb is REALLY forgiving for jetting, so once your close to the mark riding the bike will let you know (i was tuning a turbo so ended up installed a Wideband O2 sensor and data logger as the fueling at WOT had to be spot on or you just fry pistons)
    - Watch the round rubber seal between the manifold and inlet port on the jug as they perish and you get all sorts of odd issues as a result.
    - The factory ignition is fine for most uses (its just a bloody spark after all!), however its the RPM limiter changes that an aftermarket one provides that draws the crowd.

    An aftermarket ignition also gives you many more options for timing advance at different revs which improves performance. 
  • perthhog Posts: 1637
    Motor Head perthhog
    15 Aug 2019 03:48 PM
    Quoting Tarvis on 15 Aug 2019 11:02 AM
    hey Perthhog,

    The bike is basically stock right now, with stock 2:2 (with crossover) pipes.

    I bought it last year and most of what I have done is replace old and worn parts so its reliable. This includes (for the engine):
    - new base and head gaskets, rings, new rocker cover rubbers etc;
    - new pushrods, new rocker arms, honed cylinders;
    - carb rebuilt with new seals, float needle, brass fuel inlet (plastic was cracked), idle mixture screw that you can reach.
    - Pretty certain the cam is stock, but it might be on the upgrade list for me later. Probably would want an ignition upgrade at the same time. (and at this point I should be asking myself how much more money to put into a 30 year old bike).

    The bike was a daily ride for someone that used to live over in the west, he had put some bigger pipes on but they were buggered when I bought it hence splashing out on the Supermeg. 

    The bike seems to have very good cranking compression now (or I have a shit battery, one or the other), and pulls decently given its age.

    On a final note, I've had a blast doing the work myself on it. I push paper all day so getting into the shed at night to rebuild the motor was a great mental break from the daily grind.
    Sounds like you’re on a roll and loving it   Forget the cash 
    Think of it as a investment to relaxation lol   You could 
    Always be down the pub every night pissing it 
    On the wall or spending it on horses .
    And yes if you do go cam more comp 
    Later on ignition system is worth upgrading 
    It’s a lot more than just a rev Limiter 
  • perthhog Posts: 1637
    Motor Head perthhog
    15 Aug 2019 03:55 PM
    Quoting Tarvis on 15 Aug 2019 11:02 AM
    hey Perthhog,

    The bike is basically stock right now, with stock 2:2 (with crossover) pipes.

    I bought it last year and most of what I have done is replace old and worn parts so its reliable. This includes (for the engine):
    - new base and head gaskets, rings, new rocker cover rubbers etc;
    - new pushrods, new rocker arms, honed cylinders;
    - carb rebuilt with new seals, float needle, brass fuel inlet (plastic was cracked), idle mixture screw that you can reach.
    - Pretty certain the cam is stock, but it might be on the upgrade list for me later. Probably would want an ignition upgrade at the same time. (and at this point I should be asking myself how much more money to put into a 30 year old bike).

    The bike was a daily ride for someone that used to live over in the west, he had put some bigger pipes on but they were buggered when I bought it hence splashing out on the Supermeg. 

    The bike seems to have very good cranking compression now (or I have a shit battery, one or the other), and pulls decently given its age.

    On a final note, I've had a blast doing the work myself on it. I push paper all day so getting into the shed at night to rebuild the motor was a great mental break from the daily grind.
    Quoting tussuck on 15 Aug 2019 12:29 PM
    Same here.... I do all my own work except where the tooling needed is out of my cost bracket (like honing jugs etc)
    - Next time you have the cam cover off have a gander at the cam to see the markings as its pretty easy to figure out what you have.  Also check the breather cam thingy as well as they wear (S&S make a sweet reed valve unit that just sits in the hole)
    - The factory ignition is fine for most uses (its just a bloody spark after all!), however its the RPM limiter changes that an aftermarket one provides that draws the crowd.
    - The carb is REALLY forgiving for jetting, so once your close to the mark riding the bike will let you know (i was tuning a turbo so ended up installed a Wideband O2 sensor and data logger as the fueling at WOT had to be spot on or you just fry pistons)
    - Watch the round rubber seal between the manifold and inlet port on the jug as they perish and you get all sorts of odd issues as a result.
    Quoting Wideglider on 15 Aug 2019 01:38 PMedited: 15 Aug 2019 01:39 PM
    - The factory ignition is fine for most uses (its just a bloody spark after all!), however its the RPM limiter changes that an aftermarket one provides that draws the crowd.

    An aftermarket ignition also gives you many more options for timing advance at different revs which improves performance. 
    It sure does   Helps  Tailor the tune for  performance, comp,cam starting , pinging etc  
    oh and you get a rev limiter too lol 
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