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  1. #1351
    Senior Member er88's Avatar
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    Is there any real chance that these Opel and Proton R5s are any better than half-decent at best?

    Sent from my SM-G920F using Tapatalk

  2. #1352
    Senior Member Mirek's Avatar
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    Of course. Or do You think that Holzer/Opel built the best R2 car on the market by accident?
    Stupid is as stupid does. Forrest Gump

  3. Likes: Andre Oliveira (17th May 2017),cali (17th May 2017),KKS (17th May 2017),Munkvy (18th May 2017)
  4. #1353
    Senior Member Mirek's Avatar
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    Quote Originally Posted by SubaruNorway View Post
    "Evo X engine taken down to 1600cc - a process that will help make it even stronger than it is"

    And heavier, didn't know you can use an engine from a different manufacturer. They already have a 1.6l from what i can see.
    Proton has this engine in their stock portfolio (Proton Jebat is basically Lancer Evo X). IMHO Evo X engine is very good basis mainly because it's performance engine already in stock variant unlike most of others.

    Actually it's better to use larger engine and shorten the stroke. Both M-Sport and Škoda did it (2.0 resp. 1.8 base engines). PSA used stock 1.6 engines and had gazillion problems with it. Prodrive did the same mistake with Mini WRC.

    The issue with stock 1,6 litres are many. Just to name some which come to my mind...

    1) non-ideal bore/stroke ratio for competitive engine because stock engines are built with different priorities (Fabia R5 engine which is 1,8 with shortened stroke has actually very same bore/stroke ratio as taylor-made engine of Polo WRC while PSA R5 engines have hugely long stroke)

    2) engine block possibly not strong enough

    3) possibly problematic cooling of the smaller block which isn't designed for racing use
    Last edited by Mirek; 17th May 2017 at 21:30.
    Stupid is as stupid does. Forrest Gump

  5. Likes: A FONDO (19th May 2017)
  6. #1354
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    Quote Originally Posted by Mirek View Post
    Proton has this engine in their stock portfolio (Proton Jebat is basically Lancer Evo X). IMHO Evo X engine is very good basis mainly because it's performance engine already in stock variant unlike most of others.

    Actually it's better to use larger engine and shorten the stroke. Both M-Sport and Škoda did it (2.0 resp. 1.8 base engines). PSA used stock 1.6 engines and had gazillion problems with it. Prodrive did the same mistake with Mini WRC.

    The issue with stock 1,6 litres are many. Just to name some which come to my mind...

    1) non-ideal bore/stroke ratio for competitive engine because stock engines are built with different priorities (Fabia R5 engine which is 1,8 with shortened stroke has actually very same bore/stroke ratio as taylor-made engine of Polo WRC while PSA R5 engines have hugely long stroke)

    2) engine block possibly not strong enough

    3) possibly problematic cooling of the smaller block which isn't designed for racing use
    The un-official Mitsubishi Mirage R5 also uses the Evo X with shorten stroke and in the right hands can be quite competitive

  7. Likes: Andre Oliveira (17th May 2017)
  8. #1355
    Senior Member Mirek's Avatar
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    IMHO Mirage isn't on the level of WRC2 competitors. Proton needs to be a lot more competitive to have some success.
    Stupid is as stupid does. Forrest Gump

  9. Likes: TheFlyingTuga (17th May 2017)
  10. #1356
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    Proton could be a toe in the water for Mitsubishi and watch out for Nissan, they have a demon 1.6 litre engine available now.

  11. #1357
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    Quote Originally Posted by Mirek View Post
    Proton has this engine in their stock portfolio (Proton Jebat is basically Lancer Evo X). IMHO Evo X engine is very good basis mainly because it's performance engine already in stock variant unlike most of others.

    Actually it's better to use larger engine and shorten the stroke. Both M-Sport and Škoda did it (2.0 resp. 1.8 base engines). PSA used stock 1.6 engines and had gazillion problems with it. Prodrive did the same mistake with Mini WRC.

    The issue with stock 1,6 litres are many. Just to name some which come to my mind...

    1) non-ideal bore/stroke ratio for competitive engine because stock engines are built with different priorities (Fabia R5 engine which is 1,8 with shortened stroke has actually very same bore/stroke ratio as taylor-made engine of Polo WRC while PSA R5 engines have hugely long stroke)

    2) engine block possibly not strong enough

    3) possibly problematic cooling of the smaller block which isn't designed for racing use

    I think the Psa 1.6 engine and the Mini 1.6 is the same base engine. It's the EP engine.

  12. Likes: René (18th May 2017)
  13. #1358
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    Quote Originally Posted by Duvel View Post
    I think the Psa 1.6 engine and the Mini 1.6 is the same base engine. It's the EP engine.
    Is this also referred to as the "prince engine?"
    2009 Colorado Rally Cup Champion & 2009 CHCA Rookie Of the Year

  14. #1359
    Senior Member Mirek's Avatar
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    Quote Originally Posted by Duvel View Post
    I think the Psa 1.6 engine and the Mini 1.6 is the same base engine. It's the EP engine.
    Yes, You are right.

    Quote Originally Posted by TyPat107 View Post
    Is this also referred to as the "prince engine?"
    Yes.
    Stupid is as stupid does. Forrest Gump

  15. #1360
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    Will be interesting to see where this programme lies once Proton has been sold. Current leader is PSA (Peugeot) to take control of the company. http://www.autoblog.com/2017/03/22/l...a-deal-report/

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