3.5L EcoBoost - Ti-VCT?

metroplex · June 14, 2016, 03:34:39 PM

For the SHO, do we have Ti-VCT or just VCT for the intake cam?
The reason I ask is my 2014 SHO stock calibration has it set for intake only, but the F-150's have Ti-VCT enabled. This seems odd because I thought all of the 3.5's were twin independent VCT?

SHOdded · June 14, 2016, 03:37:01 PM

Ti-VCT. VCT was on the 3.5 NA engines 2006/7-10 AFAIK.

tgambob · June 16, 2016, 10:00:09 PM

I thought we were only variable on the intake cam and the f150 was both intake and exhaust?

ZSHO · June 16, 2016, 11:02:15 PM

That means Twin independent Variable Cam Timing. Some of the earlier Ford engines had variable valve timing on just the intake side. F-150 Article. Z http://www.hendonpub.com/resources/article_archive/results/details?id=5791 The V6 EcoBoost engine uses two turbos, one per bank. These fixed vane turbos operate in parallel, that is, they operate independently of one another. This is unlike Ford's diesel truck engines that use a turbo mounted in series, that is a smaller, variable-vane, high-pressure turbo to feed a larger, fixed-vane, low-pressure turbo.

SHOdded · June 16, 2016, 11:23:09 PM

I stand corrected. The FSM refers to only VCT for the 3.5 GTDI engine for the transverse platform. The F150 version (introduced in 2011) is Ti-VCT. I don't know why the difference though.

Gjkrisa · June 20, 2016, 04:41:24 AM

Yea looking at Fords specs page looks like the eco probably vct otherwise they would be proud to put the ti-vct there also

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metroplex · June 20, 2016, 05:08:55 AM

What's confusing is that Ford compared the SHO to the Ford GT in a chart from 2015, and it listed the SHO as twin independent VCT. I think they did that also on some of the spec sheets. I looked at my engine and there's only 1 spool valve per cam cover, like the 4.6L/5.4L 3V V8 engines.

I'm not sure why they didn't make the SHO engine Ti-VCT.

ZSHO · June 20, 2016, 07:15:29 AM

To the OP,hope this helps any. Z https://drive.google.com/file/d/0B8JUL90DXgdiMTZ3a0wyU0JCYkZJN1ZTT3VEd3Fic09JNTlv/view

SHOdded · June 20, 2016, 09:52:58 AM

Quote from: metroplex on June 20, 2016, 05:08:55 AM
I'm not sure why they didn't make the SHO engine Ti-VCT.

Probably a matter of timing, literally, and production commitments. The F150 3.5 EB was introduced in 2011 MY, a year later than the 2010 MY for the SHO. Also in production for the Edge, 2011 MY was when the 3.5L got the Ti-VCT setup for the NA engine. But the Taurus 3.5 NA continued with the VCT system.