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4.6 out of 5 stars18
4.6 out of 5 stars
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This is an excellent book and contains the essence of all you need to know in approaching the modification of cylinder heads . David Vizard is an excellent writer and engineer , who really knows what he is talking about . Don't laugh at his suggestions for building a d.i.y. flow-bench , I built such a device forty years ago from two old industrial vacuum cleaners and a motorcycle carb. balancing manometer - I learned lessons about airflow and port modification that have served me well ever since . Thoroughly recommended , deserves more than a mere five stars .
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on 4 November 2013
A thoruoghly up to date review of head porting today. A book that teaches you how to accuratly port your own heads, it expects the reader to be able to use the information provided for themselves not just follow instructions by rote.
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on 24 February 2014
The usual excellent and enjoyable read from the 'wizard' easy to understand and easy to follow - does make you wonder about a lot of head modifying you see along the way!!!!!!
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on 10 August 2014
A book full of useful information. A good buy.
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on 9 February 2015
very well presented and illustrated essential information for any diy engine builder. it's a pity most of the references are towards american v8's; but the basic theory can be put to good use on our 4cyl.
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on 28 October 2014
lots of info,easy to read and understand.
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on 30 March 2016
Quite good universal porting book
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on 7 September 2012
A great book for all levels of power junkie but certainly easier to read and decipher by those that have more experience.

Some of other reviews that appear to have difficulties don't add up to me. For the price, this book can save you a fortune and get you the power you want. This is the book he should've published years ago
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on 18 January 2016
Not a patch on some of his older books, full of rambling reminiscences and incomplete explanations. Also focuses very heavily on 2 valve heads.
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on 13 June 2016
Interesting read and looking forward to some serious work using the well-presented and practical teachings.
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