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b20a5 block with b21a1 head?

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Old 01-02-2011, 09:05 PM
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b20a5 block with b21a1 head?

i have an 1987 honda prelude base a18a1 motor w/ dual side-draft carbs and i am wondering if the b20a5 engine would fit under our hoods? and if i could use the b21a1 head on the b20a5 block? or would a different motor set up work better?
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Old 01-22-2011, 06:04 PM
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Re: b20a5 block with b21a1 head?

It's physically possible w/enough money/time/etc. But you will run into lots of customization. The 3rd gen Lude B20 tilts backwards. The front end of our 2nd gens are designed for an engine that tilts forwards. The 1st generation B20A's (2nd gen Si's from overseas) would fit alot easier than the 3rd gen Lude B20.
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