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Thread: Tri-z Base gaskets...

  1. 06-12-2007, 11:35 PM #1
    CuRt
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    Question Tri-z Base gaskets...

    Hey guys, I am having some problems here. I love my tri-z, I have the rare long rod kit with the spacer plate also head is shaved it hits at 240psi of compression thing when its on look out it rips. But I can't keep a set of base gaskets in it and they are not going in the same spot like a high or low spot last weekend pushed my bottom one out and sucked top one in. I have ran the cometic, varshes, and oem yamaha, had someone tell me before I have too much compression I need to run a aluminum cut it yourself set up anyone ever heard of this? any other suggestions? I am keeping headgaskets no problem just base gaskets getting sick of tearing down to just have the same thing happen again makes me want a new yz250 engine.

    Thanks guys
    Curtis
    85 Tri-Z flat slide carb, DG pipe, silencer, long rod kit, lots of compression and its mean.
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  2. 06-12-2007, 11:40 PM #2
    Bryan Raffa's Avatar
    Bryan Raffa
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    are you torquing them or cranking it right down tight.. I crank mine as tight as i can get them and have never had one suck in or blow out
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  3. 06-13-2007, 09:58 AM #3
    Yamahondaman's Avatar
    3WW Star-Yamahondaman
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    240 is too much ... it isn't that anyway ... you have too much crank case volume for that OLD Cyl. ,, after TF07 send it to me ... i have a CNC Lathe base-head clean up program ... flatness withen .0002 ..
    also you might want to try the YZ Gasket .. it's MUCH Better than all the ones you have listed ... Part # is at the house .. i'll post it when i get home
    Ronnie
    "07" DR650 Suzuki Dual Sport
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  4. 06-13-2007, 11:26 PM #4
    CuRt
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    I am tqing them down, are you saying my spacer plate is warped? Well I need to do something quick I'm going up riding again in 2 weeks lol well supose to. I even had the YZ base gasket in it at one time I want to ride and not have to fix again and again thats why I don't have my air R anymore heat and liquid cooled 4strokes didnt mix.
    85 Tri-Z flat slide carb, DG pipe, silencer, long rod kit, lots of compression and its mean.
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  5. 06-14-2007, 07:03 AM #5
    Bryan Raffa's Avatar
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    at 240psi your running it on 112-110 oct race gas right? that motor will not last long if you run pump gas!

    I agree with ronnie thats just too mutch psi for that motor

    NEXT DAY AIR THAT TO RONNIE!!!!!!!
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  6. 06-14-2007, 08:34 PM #6
    Yamahondaman's Avatar
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    Quote Originally Posted by CuRt View Post
    I am tqing them down, are you saying my spacer plate is warped? Well I need to do something quick I'm going up riding again in 2 weeks lol well supose to. I even had the YZ base gasket in it at one time I want to ride and not have to fix again and again thats why I don't have my air R anymore heat and liquid cooled 4strokes didnt mix.
    did you have part #39X-11351-01 or #39X-11351-02 ?
    "07" DR650 Suzuki Dual Sport
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  7. 06-14-2007, 09:51 PM #7
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    TRITecate350
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    You could also contact Commetic gasket about there foam metal gaskets. It is a thin steel gasket that is foam rubber coated. It wont blow out and will work when others fail.
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  8. 06-14-2007, 11:07 PM #8
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    McMaster Carr also sells some really interesting bulk gasket material that is actually a really thin rubber sheeting. It takes more heat, and holds more psi then the normal "paper" type gaskets. You'd have to trace it out and cut it yourself though.
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