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Thread: 1979 Srx

  1. #1
    VIP Member 338gpx's Avatar
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    My Sled
    1976 440 STX
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    canada
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    Thumbs up 1979 Srx

    i'm looking to buy a 79 srx. Is there good and bad things to look out for.
    One i'm looking at is suppose to have a new 108 comet clutch, stock carb and gearing.
    What should the compression be?
    I would like to trail ride it some and ran it in 660 ft drags any good idea's or setups tips on carbs , gearing or any other tweaks.

    Thanks Dave
    Last edited by 338gpx; 06-21-2010 at 11:48 PM.

  2. #2


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    THE BEST TRAIL / CONSUMER SRX OF THEM ALL FROM THAT ERA IN MY OPINION. STILL HAVE MINE I HAVE HAD SINSE NEW. GREAT SLEDS, VERY FAST IN THEIR DAY. I WOULD NOT RUN A 108 ON THESE SLEDS, BUT WOULD TRY AND FIND A 102 c WAY BETTER. A HEALTHY SRX SHOULD HAVE psi AROUND 135 / 140 . VERY CRITICAL ON THESE SLEDS IS CONDITION OF NICSIL ON CYLINDERS. COULD BE HURT IF SLED WAS BURNED DOWN AFEW TIMES. STOCK GEARING WAS 18-29. STOCK CARBS WERE .36 mm. PREFIX CHASSIS NUMBER FOR 79 SRX IS 8J0. 3:16 (yammie tony)
    Last edited by YAMMIEGOD3:16; 06-22-2010 at 10:10 AM.
    WELCOME TO YAMAHA HEAVEN / WINTER THUNDER/ VMAX4 800 5.91 e.t.
    1995 VMAX 800- FASTEST YAMAHA EVER RUN AT THE AMERICAN SNOWMOBILER MAG SHOOTOUT. 105.16 mph
    2000 SRX 700 (10.65 @ 118.92, 1.42 60. on tar)
    2002 SRX 700 (110 in 1000 f.t. on radar 8bu-10)
    1993 EXCITER SX
    1983 VMAX 540
    YAMAHA PERFORMANCE SNOWMOBILES
    ''my old dinosaur just ate your new sled for lunch ''

  3. #3
    VIP Member 338gpx's Avatar
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    My Sled
    1976 440 STX
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    canada
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    what is the difference between a 102 and a 108. what gearing would you recommend for 660 ft drags and any other changes thanks yammie tony

    .

  4. #4


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    THE 108 I BELIEVE WAS MORE FOR THE NEWER SLEDS LIKE AFTER 1985. THING ABOUT THE 108 IS THE PHYSCAL SIZE OF IT VS THE 102. IT HAS ALOT MORE EXTRA WEIGHT TO THE SHORT SRX PTO STUB. I WOULD NOT RUN THESE ON THIS SLED. BEST GEARING FOR 660 IS 17-31. IF YA GET THIS SLED, I CAN HELP YA ONLY IF YA GO TO A 102 c. I NEVER USED A 108. 3:16 (yammie tony)
    WELCOME TO YAMAHA HEAVEN / WINTER THUNDER/ VMAX4 800 5.91 e.t.
    1995 VMAX 800- FASTEST YAMAHA EVER RUN AT THE AMERICAN SNOWMOBILER MAG SHOOTOUT. 105.16 mph
    2000 SRX 700 (10.65 @ 118.92, 1.42 60. on tar)
    2002 SRX 700 (110 in 1000 f.t. on radar 8bu-10)
    1993 EXCITER SX
    1983 VMAX 540
    YAMAHA PERFORMANCE SNOWMOBILES
    ''my old dinosaur just ate your new sled for lunch ''

  5. #5
    Senior Member Improved RJH's Avatar
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    Port Carling
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    In that year..There were some that passed 100 mph in radar runs.

    So - what is my 338 GPX worth..I don't want to fix it.
    Last edited by RJH; 06-24-2010 at 01:43 PM.

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