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20 Valve to 10 Valve head conversion, stupid? ALL 19xx

posted by  someone claiming to be gordon on  Sun Jan 28 17:13 CST 2001 [RELATED]

I personally hate the idea of a Interference Engine...anyway,

I was wondering could a 10 Valve head be bolted straight onto a stock US 5 cylinder engine of the same model year and an US Market ECU (performance or stock) be used?

I am thinking that a "Boost Dependent" Engine could be built that is rugged, non-interference and that relies strictly on a very efficient Turbo (aftermarket, Ceramic ball bearings?) for aspiration VS. a combination of 4 Valve head and Turbo boost.

Just pondering, any opinions on this are appreciated!

...and yes I am aware of the special exhaust valves the Turbo engines use!







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    Re: 20 Valve to 10 Valve head conversion, stupid? ALL 19xx

    posted by  someone claiming to be John O on  Mon Jan 29 00:17 CST 2001 [RELATED]

    Where did you ever get such an idea? The 10 valve engines are also interference as well, why wouldn't they be? Exact same engine just 2 less valves per cylinder SO either way...........IF you fail to replace your T-belt when required and it breaks, you'll still be looking at $3-$4K to get it fixed.

    T-belts aren't a big deal nor is replacing them when required. Those who have it done when required don't ever have problems.







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    Re: 20 Valve to 10 Valve head conversion, stupid? ALL 19xx

    posted by  someone claiming to be Arno Griffioen on  Sun Jan 28 18:48 CST 2001 [RELATED]

    Why would the 10-valve suddenly be non-interference? The basic heads are pretty similar on the 10 and 20V engines.

    Perhaps you're right, but it sounds very odd to me..

    Bye, Arno.







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    Re: 20 Valve to 10 Valve head conversion, stupid? ALL 19xx

    posted by  someone claiming to be Yannis Alatzas on  Sun Jan 28 17:19 CST 2001 [RELATED]

    Is it worth ALL the expenses that you will incur for...LESS HP???

    Yannis






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