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Thread: 1987 Suzuki Impulse GSX 400 X GK71E Restoration

  1. #16
    Join Date
    28th August 2012 - 14:06
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    I used to have a gsxr250 with a gsx400x engine in it a while ago - it was hilariously fun to 18 year old me!
    Quote Originally Posted by Akzle View Post
    which brings me back to point Z. - use premium fuel.
    Quote Originally Posted by ducatilover View Post
    And the right plugs. And condoms.
    Quote Originally Posted by Akzle View Post
    never really believed in em. which i suppose is why my bike runs rough and i have kids.

  2. #17
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    7th September 2009 - 09:47
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    Yo momma
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    They were a lot of bike for $4000 brand new, bit of a bargain really. Lots of them were snatched up by couriers.

  3. #18
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    15th May 2008 - 19:13
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    Enough that the car lives outside now.
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    Quote Originally Posted by jasonu View Post
    They were a lot of bike for $4000 brand new, bit of a bargain really. Lots of them were snatched up by couriers.
    Yeah....and guys thinking they were going to win the F3 championship out of the box, first time up....

    I recall getting my new TZR250 in 87 to go proddie racing. In 1988 the AMCC introduced a clubmans class which was chock full of Impulses - many ridden by guys new to racing who still had stock tyres etc....that and a few Rg400's whih had been dumped here too in the same shipment.

    We were also allowed to cross enter from 250 proddie into the clubmans class, so along with my old 125, I used to have quite a lot of racing in one day....lucky I was young!

    Anyway, I digress. First clubmans practice session at the Puke club circuit (2 and a 1/2 corners!), I swear there were 3 more impulses on the deck, parked up on each corner each successive lap I did. Started as a pretty full grid too....bloody orange things everywhere upside down! I was crap even though I'd been racing 3 years at that point, but hell, there could show Japanese Kamikaze pilots a few things!

  4. #19
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    13th June 2010 - 17:47
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    Quote Originally Posted by malcy25 View Post
    Yeah....and guys thinking they were going to win the F3 championship out of the box, first time up....

    I recall getting my new TZR250 in 87 to go proddie racing. In 1988 the AMCC introduced a clubmans class which was chock full of Impulses - many ridden by guys new to racing who still had stock tyres etc....that and a few Rg400's whih had been dumped here too in the same shipment.

    We were also allowed to cross enter from 250 proddie into the clubmans class, so along with my old 125, I used to have quite a lot of racing in one day....lucky I was young!

    Anyway, I digress. First clubmans practice session at the Puke club circuit (2 and a 1/2 corners!), I swear there were 3 more impulses on the deck, parked up on each corner each successive lap I did. Started as a pretty full grid too....bloody orange things everywhere upside down! I was crap even though I'd been racing 3 years at that point, but hell, there could show Japanese Kamikaze pilots a few things!
    Down here, Mo Haley actually built one up for a local lad. Crashed road bike I believe. Stock tank, 'glass seat with clipons and rearsets. Basically stock but a bit noisier. The lad rode it and learned quickly, moved on and upward after a couple of seasons on it. It's disappeared now but would still be a fun bike to pull out for pre89 F3 on the short tracks.

  5. #20
    Join Date
    5th August 2017 - 09:40
    Bike
    1987 Suzuki Impulse GSX 400 X GK71E
    Location
    New Plymouth
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    Thanking you sir!

    Quote Originally Posted by sidecar bob View Post
    Hi, I have a gk71b & a genuine Suzuki service manual for one. The engines are near enough the same. If you want to know any specifics let me know.
    Warning, they are a total party on wheels, I can't ride mine without bouncing it off the limiter a few times every time.
    Much thanks Sidecar Bob. I have found the carb specs so far and thats about it. Thank you.

  6. #21
    Join Date
    5th August 2017 - 09:40
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    1987 Suzuki Impulse GSX 400 X GK71E
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    New Plymouth
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    Lololol

    Quote Originally Posted by sidecar bob View Post
    Well there's some encouragement for your restoration, hope that helps.
    Yes my thoughts too, gave me a chuckle tho...

  7. #22
    Join Date
    25th March 2004 - 17:22
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    Hey if anyone has the manwel to hand can they post up the valve clearances? Guessing they are shim under bucket just to lessen my desire to open this thing up?
    I've been told. Dreaming`s free.
    Think I'll go, back to sleep.
    Everybody listen, voices in my head
    Everybody listen, do yours say, what mine says?

  8. #23
    Join Date
    5th August 2017 - 09:40
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    1987 Suzuki Impulse GSX 400 X GK71E
    Location
    New Plymouth
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    First Resto

    Quote Originally Posted by OddDuck View Post
    You've done restoration work on other bikes before? Just checking before offering any advice.
    No sir this is my first restoration but I have some help. My brother is a panel beater and I have just started some part time work at a garage so have a couple of people that can help. Any advice would be appreciated as this is all new to me. I owned a repulse back in the day so this is purely a memory lane deal. Not so concerned about getting it perfect. I really would just like to ride one of these again.

  9. #24
    Join Date
    5th August 2017 - 09:40
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    1987 Suzuki Impulse GSX 400 X GK71E
    Location
    New Plymouth
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    State of things so far... Update 1

    Thanks for all the comments. The engine starts and runs on 3 cylinders, front shocks are leaking fork oil, rear shock is stuffed, regulator/rectifier needs replacing as voltage is all over the place. Breaks are shot front and rear. The only good parts are the cosmetics/fairing. I have started sanding and prepping them. I need to make sure the engine is worth saving. It is not the original engine. The previous owner threaded one of the spark plug threads so I am hoping that this is not part of the problem with the cylinder that is not working. The carbs are leaking gas so prob looking at replacing the needle valves...

  10. #25
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    5th August 2017 - 09:40
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    1987 Suzuki Impulse GSX 400 X GK71E
    Location
    New Plymouth
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    Thanks again!

    Quote Originally Posted by sidecar bob View Post
    Maybe this would be worth buying , either for parts, or the main resto bike.
    http://www.trademe.co.nz/Browse/List...?id=1381591821
    It probably won't go for a lot.
    I saw this but missed out on it. As you guessed it went for chump change.

  11. #26
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    13th June 2010 - 17:47
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    Quote Originally Posted by F5 Dave View Post
    Hey if anyone has the manwel to hand can they post up the valve clearances? Guessing they are shim under bucket just to lessen my desire to open this thing up?
    From my notes done back in the day, I used .004in inlet and .005in exhaust clearances. Screw and locknut adjusters on all the ones I've seen.
    Just like a big GSXR of the period.

  12. #27
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    25th March 2004 - 17:22
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    Thanks Greg. Cool, easy then. Not 2stroke easy, but better than the last couple of foulstrokes I've worked on.
    I've been told. Dreaming`s free.
    Think I'll go, back to sleep.
    Everybody listen, voices in my head
    Everybody listen, do yours say, what mine says?

  13. #28
    Join Date
    22nd October 2002 - 11:00
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    I don't know how relevant it is to an Impulse but I have an electronic copy of a full workshop manual for a GSX-400 which covers the 1982 FZ and 1983 FD models. It's about 40 Mb so can't post here but anybody with a genuine interest can PM me and I'll look at uploading it to a Dropbox address or similar. Got hold of it for a mate who was restoring a 400 a good few years ago. He made a lovely job of it.
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  14. #29
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    9th October 2003 - 11:00
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    Quote Originally Posted by Blackbird View Post
    I don't know how relevant it is to an Impulse but I have an electronic copy of a full workshop manual for a GSX-400 which covers the 1982 FZ and 1983 FD models. It's about 40 Mb so can't post here but anybody with a genuine interest can PM me and I'll look at uploading it to a Dropbox address or similar. Got hold of it for a mate who was restoring a 400 a good few years ago. He made a lovely job of it.
    Good try Geoff, but not even slightly related. The Repulse is basically a naked 1984-86 GSXR400. 4 cylinder, single shock rear end, etc., etc. With bits of the Sydney Harbour Bridge painted orange and tacked on randomly.
    I was just thinking Yesterday. I'm about the age Hitler was when he shot himself. Puts into perspective how little I've done with my life.



  15. #30
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    22nd October 2002 - 11:00
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    Quote Originally Posted by James Deuce View Post
    Good try Geoff, but not even slightly related. The Repulse is basically a naked 1984-86 GSXR400. 4 cylinder, single shock rear end, etc., etc. With bits of the Sydney Harbour Bridge painted orange and tacked on randomly.
    Yeah, I know what the Impulse looks like Jim but wondered if the motor was the same. Don't have any knowledge at all about those small Suzuki motors. Never mind

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