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Adapting 11 mm injectors to fit 14 mm LOWER injector seats


ktm

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I bought one of Justin Olson's intake flanges and it is machined for 14 mm injectors. I am running 7MGTE (Supra) 440 cc 11 mm injectors along with an 11 mm fuel rail (Pallnet).

 

Does anyone know of a way to modify the lower injector isolators to fit a 14 mm setup?

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Try contacting a place that cleans and tests injectors. I had the pintle caps on my ford injectors changed to the foreign style pintles to fit the factory Z manifold. Maybe they can put on pintles that work with a 14mm bore seal. It was very cheap to do.

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O-Rings n Things in Fontana probably has a metric O-Ring that can adapt if you have inside and outside O-Ring diameter requirements.

 

That would allow you to use your current pintile end (11mm) and simply get a 'fatter' O-Ring to seat against the 14mm holes. It's just an o-ring, you can probably get some teflon or PEEK backup rings as well to prevent any extrusion under higher boost pressures...but standard 75 Durometer O-Rings should hold up just fine at 50psi boost, even without backup rings.

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