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Duratec cam specs
snapper - 6/2/20 at 04:10 PM

I have a Duratec 2.0L extracted from my Fiesta ST150 which has solid lifters.
I cannot for the life of me find any specifications for the cams!
What are the lift and duration specs for both cams? Anyone know?

obfripper - 6/2/20 at 08:05 PM

I was going to point you in the direction of catcams website, but there's no values for the 145bhp duratec, there have figures for the mazda vvt 160bhp ones but those are probably miles different.

Dave

snapper - 6/2/20 at 08:58 PM

And there’s the issue, I can’t find any details.
They don’t have the cam specs in a Haynes manual for the ST version

perksy - 6/2/20 at 10:01 PM

Burtons or Ammo at Raceco ?

obfripper - 6/2/20 at 10:25 PM

For N4JA/N4JB

Camshaft journal diameter 24.97 ± 0.01mm
Camshaft journal clearance 0.035 - 0.080mm
Camshaft endplay 0.09 - 0.24mm
Camshaft lobe lift, intake 8.8mm
Camshaft lobe lift, exhaust 7.7mm

Just the duration left to find, doesn't show up on any of my tech data.

Dave

[Edited on 6/2/20 by obfripper]

snapper - 7/2/20 at 04:02 PM

quote:
Originally posted by obfripper
For N4JA/N4JB

Camshaft journal diameter 24.97 ± 0.01mm
Camshaft journal clearance 0.035 - 0.080mm
Camshaft endplay 0.09 - 0.24mm
Camshaft lobe lift, intake 8.8mm
Camshaft lobe lift, exhaust 7.7mm

Just the duration left to find, doesn't show up on any of my tech data.

Dave

[Edited on 6/2/20 by obfripper]


Thanks great job.

peter030371 - 9/2/20 at 09:56 AM

I was told the other day that the later ST150 has more sporty cams. Not heard that before, has anyone else heard this?

I have a spare set of used ST150 cams if anyone wants them?

obfripper - 9/2/20 at 01:22 PM

quote:
Originally posted by peter030371
I was told the other day that the later ST150 has more sporty cams. Not heard that before, has anyone else heard this?

I have a spare set of used ST150 cams if anyone wants them?


The lift is the same, the duration could be different but the 1.8 has different lift for the different bhp variants, i would expect the lift to change with increase in duration.

Dave