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[Mk2] [NA] Twin Webers

 
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telavich




Joined: 06 Aug 2009
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Location: Elton Cheshire
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PostPosted: Mon Mar 12, 2018 7:54 pm    Post subject: [Mk2] [NA] Twin Webers Reply with quote Reply with quote including images

Hi I am in the process of purchasing twin 40 weber downdraught carbs for my rev 1 and wondered if anyone knows of any issues on fitting them before I buy them. Thanks
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Al-sw20




Joined: 23 Jan 2005
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Location: Christchurch, New Zealand
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1991 Toyota MR2 Mk2 Turbo Rev1

PostPosted: Mon Apr 09, 2018 2:00 am    Post subject: Reply with quote Reply with quote including images

Yeah with careful tuning you might make a tad more power than the efi system. You will never get close to the fuel economy that the efi system has though.
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Madabout




Joined: 12 Jun 2011
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PostPosted: Mon Apr 09, 2018 5:38 am    Post subject: Reply with quote Reply with quote including images

I had twin Weberís on a 1.6 NA MX5.

Sounded absolutely lovely, on a standard 1.6 engine it would have been about 115 bhp from factory but it was making around 130/135 bhp. Great throttle response too. The fuel economy was never that bad or not enough for me to be bothered or notice.

Hadnít thought about them on a MR2 but sounds a good idea.
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pbmr2
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PostPosted: Wed Apr 11, 2018 12:09 pm    Post subject: Reply with quote Reply with quote including images

except the 3sge isn't a detuned 1.6.

Carbs are a compromise for most of the rev range. there are a couple of points where they come into their own.

ITBs with injectors would be a better setup.
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