Unleaded fuel in capris?

Discussion in 'Capri Chit Chat' started by Izaak Garner, 30 September 2018.

  1. Izaak Garner

    Izaak Garner Member Capri Power Member

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    Hello everyone.
    I'm new to this forum and was wondering what people's go to solution was for using unleaded fuel in ford capris. I'm simply wanting to know what people have been doing about this and what the safest option is for the cars engine.
    Thanks in advance.
     
  2. Clockwork Orange

    Clockwork Orange Electrical ??? what like .. bzztt Feck !!! Staff Member Moderator

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    there's fuel additives.. think Valvemaster is one of the most popular
    [​IMG]

    and then there's an engineering solution, replacement hardened exhaust valve seats .. also depending on engine, the chance to swap out to unleaded compatible heads
     
  3. Izaak Garner

    Izaak Garner Member Capri Power Member

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    Thanks for the response.
    Have you had any experience with the fuel additives? I've also read about products you drop into the tank but I'm sceptical and don't want to damage the engine in the long run.
     
  4. Clockwork Orange

    Clockwork Orange Electrical ??? what like .. bzztt Feck !!! Staff Member Moderator

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    I have friends that use ValveMaster .. lots!
    Capri Club Scotland guys have good words as well as many others ..
    I didn't use it, but fitted a Sierra injection unleaded head onto my last 2litre Pinto..
    my current engine is actually compatible - Rover V8 - done 100s of 1000s on it with absolutely no ill effects ..
     
  5. eau de cologne

    eau de cologne Registered Capri Power Member

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    Fit hardened valve seats no more worries :rolleyes:
     
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  6. ADB

    ADB Registered Capri Power Member

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    As above, fitted hardened valve seats in my laser in 1998, altered the timing slightly and haven't had an issue since
     
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  7. Not_Anumber

    Not_Anumber Registered Capri Power Member

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    + 1 for Valvemaster. i use it every time I fill up. However it could be said that with the relatively low mileages most of our Capris cover we are very unlikely to see any noticeable deterioration without additives

    It could be sensible to do the valve seats if the head was actually being taken off to carry out other work, cam, porting etc but probably not worth it otherwise as a job on it's own unless the valve seats were already becoming a problem.

    Some carry on running a standard engine without additives and if in the future they see a noticeable loss of compression due to exhaust valve seat wear and tear they will carry out the work at that point. The worst that can happen is the exhaust valve seats get worn and need replacing - which of course is the same job as the preventative maintenance anyway.
     
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  8. Wideboy

    Wideboy Registered Capri Power Member

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  9. PaulG

    PaulG Registered Capri Power Member

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    I was thinking of using this too.

    I seem to remember back in the eighties and early nineties Ford recommended retarding the ignition by 4 degrees and using 4-star leaded every 4th tankful. This certainly applied to my mum's MK2 Fiesta at the time and I guess it was recommended practice on all the other models.

    I could still do this as there is a garage (Ford dealership) very near me that still sells 4star leaded, albeit at the grand price of £1.69 a litre.

    Other posters are right when they say the only proper way of getting the car fit for unleaded, especially with all the ethanol crap thats now in it, is to fit hardened exhaust valve seats and possibly valve guides.
     
  10. Izaak Garner

    Izaak Garner Member Capri Power Member

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    Thanks for the information guys. I'll look into it. Do you reckon the long term solution is to modify the seats?
     
  11. Izaak Garner

    Izaak Garner Member Capri Power Member

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  12. chris249

    chris249 Registered Capri Power Member

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    I used redex regularly, the capris are daily drivers, but in the end no1 exhaust seat was worn on my 1.6 LS, ran out of valve clearance adjustment, so had hardened valve seat inserts and new valves, no more worries! 20161031_164949.jpg
     
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  13. Izaak Garner

    Izaak Garner Member Capri Power Member

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    Thanks for the response mate.
    How much does having hardened valve seats fitted set you back?
    Cheers.
     

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