Injector Housing Question

[-=Jeff=-]

will injectors housings from a 93-95 fit a 90?

what is different on them?

also how about the plenum?

[Locobob]

Originally Posted by -=Jeff=-

will injectors housings from a 93-95 fit a 90?

what is different on them?

Yes but you'll have to switch to the late style primary injectors - o ring seal on the injector rather than the housing.

Originally Posted by -=Jeff=-

also how about the plenum?

Yes again with a few alterations. Block off EGR, change a few vacuum fittings, etc.

[-=Jeff=-]

Originally Posted by Locobob

Yes but you'll have to switch to the late style primary injectors - o ring seal on the injector rather than the housing.



Yes again with a few alterations. Block off EGR, change a few vacuum fittings, etc.

Okay so the 93-95 IH with a 90 Plenum would work?

I assume you can smooth out more? or less with the 93-95 IH when porting?

[Locobob]

Originally Posted by -=Jeff=-

Okay so the 93-95 IH with a 90 Plenum would work?

I assume you can smooth out more? or less with the 93-95 IH when porting?

The early castings are better for porting since the o-ring for the primary injectors is high in the housing hence the boss can be pretty much eliminated.

[-=Jeff=-]

Originally Posted by Locobob

The early castings are better for porting since the o-ring for the primary injectors is high in the housing hence the boss can be pretty much eliminated.

Makes more sense now.

is the OE Dia of the 93-95 bigger Dia then the 90-92? (not counting the injector boss)

[Locobob]

Originally Posted by -=Jeff=-

Makes more sense now.

is the OE Dia of the 93-95 bigger Dia then the 90-92? (not counting the injector boss)

The late castings have a larger diameter due to additional machining by the factory, 34mm vs 33mm approx. This extra machining does not go all the way through the port however - only about 2in down from the top.