je c20let pistons with autosprint +1mm valves
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  1. #1
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    je c20let pistons with autosprint +1mm valves

    Hi,
    can i use +1mm valves with je pistons c20let 8,5 c/r
    is it possible?
    thanks

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    Re: je c20let pistons with autosprint +1mm valves

    Depends more on the lift of your cams
    Manifolds,flanges,collectors,bends and car transport PM your needs.

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    Re: je c20let pistons with autosprint +1mm valves

    hi
    i am using xe cams
    inlet cam is 4-5 degree retared and exhaust is stock
    Thanks
    Kind Regards

  5. #4
    Rs1
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    Re: je c20let pistons with autosprint +1mm valves

    Well aye that'll be no probs, bang em in.
    "THE ROB"

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    Re: je c20let pistons with autosprint +1mm valves

    Quote Originally Posted by Rs1 View Post
    Well aye that'll be no probs, bang em in.
    thanks
    autosprint valves arent good enogh?
    i am running at 1,4 bar cont. pressure with gt2871
    which valves should i use?
    Thanks

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    Re: je c20let pistons with autosprint +1mm valves

    Quote Originally Posted by emret View Post
    thanks
    autosprint valves arent good enogh?

    Thanks
    What makes you say that?
    Manifolds,flanges,collectors,bends and car transport PM your needs.

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    Re: je c20let pistons with autosprint +1mm valves

    Quote Originally Posted by emret View Post
    thanks
    autosprint valves arent good enogh?
    Thanks
    they been fine for a 520bhp let thrashed to hell and back in the fastest fwd vauxhall in the country

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    Re: je c20let pistons with autosprint +1mm valves

    Quote Originally Posted by turbo gav View Post
    What makes you say that?
    hi,
    sorry for my bad English

    i said ,

    autosprint valves have good quality valves for c20let engines
    Thanks

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    Re: je c20let pistons with autosprint +1mm valves

    Quote Originally Posted by GAZ`D View Post
    they been fine for a 520bhp let thrashed to hell and back in the fastest fwd vauxhall in the country
    hi,
    Thanks too much

  11. #10
    Rs1
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    Re: je c20let pistons with autosprint +1mm valves

    The quality of the autosprint valves should be ok, theres plenty of people using them with no problems. The odd failures may have had something to do with running conditions.....excess heat, rpm, det etc. I dont think anyone has done any conclusive testing on the valves so its pay your money take your chance time.
    As far as.....well known for reliabilty goes, Paul Ivey(REC), and QED have a better reputation but will run you a little extra £££.

    For 1.4 bar on a 2871 i'd of stuck with OE valves.
    "THE ROB"

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    Re: je c20let pistons with autosprint +1mm valves

    theres nothing wrong with geoff`s stuff its the same as must stuff you get from anywhere else you might get one thats gone tits up but thats not down to the seller unless they make them thereself
    JSRacing ...10.7 astra mk2 ...10.4 tigra and they are both 8v turbos both on megasquirt :)
    Drag cars don't have to be pretty they just have to go fast in a straight line

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    Re: je c20let pistons with autosprint +1mm valves

    Quote Originally Posted by Rs1 View Post
    The quality of the autosprint valves should be ok, theres plenty of people using them with no problems. The odd failures may have had something to do with running conditions.....excess heat, rpm, det etc. I dont think anyone has done any conclusive testing on the valves so its pay your money take your chance time.
    As far as.....well known for reliabilty goes, Paul Ivey(REC), and QED have a better reputation but will run you a little extra £££.

    For 1.4 bar on a 2871 i'd of stuck with OE valves.
    hi,
    I got two coscast heads now have the problem but that, my former coscast head (gm valve) cap stud all corrupt and valve cover my case the other autosprint +1 mm valves with a single shock, and fear the valve under high pressure valves for instability

    sorry for my bad english

    Thanks

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    Re: je c20let pistons with autosprint +1mm valves

    Quote Originally Posted by screamer69 View Post
    theres nothing wrong with geoff`s stuff its the same as must stuff you get from anywhere else you might get one thats gone tits up but thats not down to the seller unless they make them thereself
    hi,
    thanks too much.

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