Contour Enthusiasts Group Archives Forums Modifications Duratec Performance Phenolic intake & Throttle body spacers

I couldn't agree more with Tom. Phenolic spacers work until the motor is fully warmed up-then they're useless.

However, I'd like to comment on 2 other items of note: t-body spacers and the lousy method of joining the UIM to the LIM. I fabricated a set of locating bushings which remove all the slop in the factory bolt up for the UIM to LIM. They positively locate the UIM exit ports directly over the LIM entry ports. Do I have dyno tests to prove their effectiveness-NO. Common sense tells me they work.

I also have a custom fabricated .75 aluminum t-body spacer with an integral venturi/ram air/anti-reversion feature. As I had to install studs to attach it to the UIM, plus an extension bushing for the linkage bracket and a spacer at the throttle cable it was difficult to do a back to back when I last dyno'd. However, my non-SVT Duratec makes serious HP with all the stock electronics including the MAF, injectors, fuel rail, precats, LIM & Y pipe. I did do a back to back on the UIM and the 98 SVT is worth 4HP and 7 ft/lbs over my heavily modded/ported stocker.

If anyone is interested I'd be willing to fabricate more UIM to LIM alignment bushings. PM me.