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Thread: Phazer Engine mods

  1. #31


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    Quote Originally Posted by clutch
    Odly enough though....

    Following the link to the Dyno reports for the phazer pipe shootouts, the psi twins didn't fare so well. They barely nudged out the psi single pipe and both of them were beat by the aaens...
    Yes, the aaen quiet can was the big power maker in the shootout. I am not sure if it is still available from aaen still but may be found used on ebay. I have not seen many. The DG pipe is quite common though and also makes decent power. I run one and have been very happy with it!

  2. #32
    Junior Member Mini
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    Check it out!

    These pistons appear to have the "SX" cut already done!!!!!

    http://cgi.ebay.com/ebaymotors/ws/eB...7879474&rd=1,1

  3. #33


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    Yes, the wiseco's are the way to go!

  4. #34
    Senior Member ProStock change_up's Avatar
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    Seeing that you're in Ontario, you might want to give Iantomassi track'n'trail a call. They are in Bowmanville... can't remember the phone # but i think a few people on here will know it... Maybe junior??

  5. #35
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    Yesterday I went to the local dealership and ordered a Wiseco top end kit. I was much more than the factory replacement top end (2000 Phazer Mountain Lite).

    I came home and tore down the top end of the sled.

    Much to my suprise, the OEM pistons ALREADY have the SX cut done to them!

    I check the squish gap with some solder after I had pulled one of the heads off. The MAG side cylinder showed ~.05. Pretty tight, and the heads have almost NO room to be milled. The head gasket is a two layer metal that is .015 thick, you may be able to run it with a single layer.

    I'm guessing this is were Yamaha came up with the little extra power in the "500" series of these motors. Tightened the head and changed the piston design.

    BTW... The Wiseco's are only offered in 1mm and 1.5mm oversize. The OEM start at .025 over and then go up so you don't have to hog out the jug on your first rebuild.

    That takes care of any "cheap" power adders from days gone by. It basically leaves, reeds and pipe for more power.

  6. #36


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    Quote Originally Posted by ExpertXViper
    I was wondering this the other day, what about taking 2 98-02 SRX Pipes and custom fitting them under a 99-01 Phazer hood. Is there any aftermarket companys out there that makes twin pipes for the phazer or are the just singles???? Cause I thought the Phazer with twin SRX pipes be a sweet conversation peice and something to brag about. What are your guys thoughts on that.
    The only way to tell if it would work would be to dyno test it. The pipes are matched to each individual motor and the wrong pipes may not work well at all. The SRX pipes may even cause the Phazer to lose power.

    Even the pipes for the old Phazer - if they could be fit in the newer chassis- may not be a good match because of the changes to the motor.

  7. #37
    Senior Member ProStock Lasse's Avatar
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    Question Difference between Yamaha OEM pistons... ?

    Quote Originally Posted by phazer95 View Post
    Stock Phazer "TSS" engines make about 55~58 Hp.
    Quote Originally Posted by Yamahammer485 View Post
    Stock Phazer-500 "Pro-Action" engines make about ~63 Hp.
    Quote Originally Posted by Yamahammer485 View Post
    I have got E-mail from Wiseco regarding the Phazer 485 FC engine stating that they did an update on their piston design in 2001
    and that the piston will work for all Phazer's through the years.
    And they said they didnt know if the piston was the same shape as the OEM one was.
    Quote Originally Posted by phazer95 View Post
    The Wiseco pistons intake cut is wider and taller than the stock piston and is very similar to the original SX piston cut that was used for Yamaha's formula 56 oval race sled.
    This is the main mod done on the intake side and changes the intake port timing of the motor.
    Quote Originally Posted by clutch View Post
    I have tore down the top end of the sled ( Phazer Mountain Lite "Pro-Action"/Phazer-500 "Pro-Action" )
    Much to my suprise, the Yamaha OEM pistons ALREADY have the SX cut done to them!
    I check the squish gap with some solder after I had pulled one of the heads off.
    The MAG side cylinder showed 0.05" Pretty tight, and the heads have almost NO room to be milled.
    The head gasket is a two layer metal that is 0.015" thick.
    I'm guessing this is were Yamaha came up with the little extra power in the "500" series of these motors.
    Tightened the head and changed the piston design.
    Can anyone confirm or deny that there is a difference in the design of Yamaha OEM pistons between Phazer-480 "TSS" and Phazer-500 "Pro-Action" ?
    WTB:
    * Reichard's ( RPC ) , single stealth pipe ( Phazer-II )

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    // Lasse from SWEDEN.

  8. #38
    Senior Member Open Mod shaggyzr2's Avatar
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    I know that they later phazer piston is over $20 less than the earlier ones so there must be a difference

  9. #39
    Senior Member ProStock Lasse's Avatar
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    Quote Originally Posted by shaggyzr2 View Post
    I know that they later Phazer piston is over $20 less than the earlier ones so there must be a difference
    Yamaha OEM Piston part #

    * ( 1984-2002 ) "TSS" sleds ---> 8V0-11631-00-96
    * ( 1999-2008 ) "Pro-Action" sleds ---> 8DJ-11631-00-A0
    Last edited by Lasse; 10-17-2019 at 03:23 PM.
    WTB:
    * Reichard's ( RPC ) , single stealth pipe ( Phazer-II )

    - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

    // Lasse from SWEDEN.

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