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Toyota Engine Development, Modification & Performance Tuning
:: Feature Article...
4.6L COBRA

The twin 57mm plate throttle body off the 4.6L Mustang Cobra - A slight upgrade from the 7m's single 60mm standard issue. This number caught my eye on EBay about a month ago, and she arrived only today ..

Toyota Engine Development,
Modification & Performance Tuning


I finally got my throttle body! looks so friggin big, im a little intimidated by it... now comes the hassle of rigging up the rather complex throttle cable cam and the tie rod assembly - all necessary so that i can get the tal rising rate throttle response im after. hopefully  it wont be too bad, but i guess im not going to know for a while...

:: Old Feature Articles...

Livewire...

Dave Swan's 'Livewire' is a 15' 6" Ted Jones hydroplane built in about 1970. It's powered by a 7M-GE  motor that was rebuilt as stock, with only three 45mm Webers and a free flowing exhaust as the major modifications...

Squish...

An introduction to the concept of combustion chamber squish, and its use in performance engines. Includes images of different squish modifications for the 7m head including the TRD GrpA heads.

Head Porting the 7M-GE...

A step by step pictorial outlining Ed's crack at porting the 7M-GE head. before and after photos outline specific areas of concern in the 7M head...

7M-GE Camshaft Profiles...

A quick run down of the commercially available 7M camshafts, including profile specifications and some pricing. Profile data of a HKS grind...

Head porting the 2JZ-GE

Detailed images of Dave's 2JZ-GE porting job, with accompanying before and after flow bench data and graph...
Ma61 5 x 114.3mm front hub upgrade.

Possibly for the first time in mkii supra history, a definitive guide to upgrading the front hubs of the ma61 to the stronger, and more popular 5 x 114.3mm (5x4.5") stud pattern.
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serotonergic@hotmail.com

articles regarding any aspect of toyota engine performance, modification, general technical theory, engine conversions, or other vehicle modifications are always welcome.

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