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Thread: VXR rods and pistons in ZLET

  
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    nick88's Avatar
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    VXR rods and pistons in ZLET

    Was wondering if new/used vxr rods and pistons would be a worth while upgrade in zlet?

    I know there not as strong as fully forged etc but would they would be alot better for stage 2/3 for alot less money and piece of mind?

    Are they the same size as zlet pistons? Could i just send car into a tuner and ask to change rods pistons and bolts? What else would need to be done?

    Not planning on it anytime soon but would be good to know for future.

    Cheers

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    dannysport18's Avatar
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    Pistons Yes
    Rods nope they are the same as LET ones

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    it would be expensive! head off etc etc. zlet bottom end is good for 300bhp

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    Well last gsi i had on eds stage 1 melted a piston with a crack through middle,
    so dont really want it to happen again. I might not even tune this one but thought id ask while i was thinking about it. If most bottom ends are good for 300bhp what would of been the cause of a melted piston? Is it due to fuelling or something else?

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    Bad fueling and misfire melts all turbo engines.
    Astra Coupe Z20LET EDS stage 2


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    a std Z20LET will make 300bhp but for how Long on std pistons ?
    thats not some thing I would want to do on one of my own cars
    see the thing is the Z20lets are getting on abit now
    Block's are fine they could do with a bit of a rebuild ie
    1,oil seals in the head
    2,Cast Pistons its some thing I like to change on high power builds or a std rebuild
    3,Steel Rods is some I also like to bung in a engine

    you dont have to do it but I do it to Run nice and Safe power I think its always better to over spec a engine then under spec it
    Cheaper in the long Run

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    I have an modified engine. I had to rebuild mine, and gone for the forged pistons, bolts, made everything to 1'st standard of repair, all new. I can say now, that the engine is more alive, i can drive hard all day and after getting to a stop sign, it calm's down very nice. Since the rebuild the fuel consumption is crazy, 30 miles per gallon or so in the city, with normal driving. The pistons and bolts are a must when going on high power, with good bolts the rods can go up to 350 bhp without cracking. In theory, if you have a good afr can go up to 300 bhp on standard internals but not to kill it every day.
    Astra Coupe Z20LET EDS stage 2


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