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#1
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08 WRX & Plastic Intake manifolds
An interesting article about the usage of composites (plastics) that have replaced aluminium in the new 08 Impreza:
http://www.sportcompactcarweb.com/fe...wrx/index.html To quote from the above article in sport compact car (on the 08 Impreza): Quote:
************************************************** ************************************************** * But you also have to consider results from real world testing: (From NASIOC) Quote:
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"You can turn your back on a person, but, never turn your back on a drug. Especially when it's waving a razor-sharp hunting knife in your eye." - Raoul Duke Last edited by WRXTASY; 26-07-2007 at 01:44 PM. |
#2
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oh happy times.. hopefully the sti is not the same
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______________ 2002 WRX - New Ej207 Short Motor + More in Progress ..OMG! thats so sick it makes other things that are sick look less sick.. |
#3
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I've edited the post to present a more balanced view from US Legacy owners.
The Oz 08 WRX engine is going to be very much based on our 07 Liberty GT engine.
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"You can turn your back on a person, but, never turn your back on a drug. Especially when it's waving a razor-sharp hunting knife in your eye." - Raoul Duke |
#4
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the plastic manifold has been around for years, the only downside to aftermarket tuners is the DBW throttle option only. everything else is win-win. infact i would consider the plastic manifold much more efficent then the aluminium ones to date.
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Long live the WRC |
#5
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The only concern I have is long term longevity in regard to heat and boost cycles.
I know for instance that the hot side plastic end tank on MY99 WRX radiator are not the best with increased pressures and temps, and fail over time. This may be more to do with design characteristics and lack of extra reinforcement/ribbing than the plastic itself.
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"You can turn your back on a person, but, never turn your back on a drug. Especially when it's waving a razor-sharp hunting knife in your eye." - Raoul Duke |
#6
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yah i'd agree, although the material thickness on the new plastic manifolds is quite hefty, its not flexible or as susceptible to damage as the scare tactics make them out.
they still use tgv deletes, so the plastic manifolds dont actually directly connect all the way down to the heads.
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Long live the WRC |
#8
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Quote:
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#9
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I think people need to understand the properties of 'plastics' before thinking they are weak and no good.
A lot of plastics used in engineering are a lot stronger, lighter and better than steel or aluminium. People have a tendency to assume steel will be stronger. Personally I fail to see what the issue is. Subaru release a car to be driven as it is, they don't release a car to be modded and run 25psi. If you purchase a car and start to mod it you have to expect that some parts will be under engineered for your task and will need to be replaced. In saying that, I would assume all parts have massive safety factors in built in the design, so they will be able to withstand the general publics mods. It's a bit like saying Subaru are wankers because the stock 5 speed doesn't handle 500kW atw.
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[COLOR="Gray"]550Nm off a 2L... Just wish it was in the dak dak...[/COLOR] |
#10
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Quote:
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Version 6 STI Last edited by WhiteRX; 26-07-2007 at 07:45 PM. |
Tags |
08, intake, manifolds, plastic, wrx |
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