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DISCUSSION => Engine + Driveline => Topic started by: 318-is on April 23, 2006, 03:30:48 PM

Title: Cam timing advance
Post by: 318-is on April 23, 2006, 03:30:48 PM

hi all

just wondering has anyone done the camshaft timing advance mod? As we all know the cam timing sprockets are adjustable on the m42; according to rev a 5 degrees advance on the inlet camshaft can improve high end torque and power?

No one over the pond here in the UK has done this, not that i no off anyway, so just wandering if any of you american boys have done the mod? is it easy?

thanks in advance for replies (if there is any!)

Regards, Dan

Title: Cam timing advance
Post by: jfdublyu on April 23, 2006, 03:53:15 PM

I'VE done it. very easy, but i just kinda estimated the degree. i just slightly advanced it from where it was (stock I guess). i guess it improved performance, but it's kinda hard to really judge by the seat of your pants dyno

Title: Cam timing advance
Post by: 318-is on April 23, 2006, 05:12:39 PM

LOL

was the gain mostly high in the rev range then?

how do you go about doing it; i read somewher eyou have to drain the coolant and remove the 'stat housing?

Title: Cam timing advance
Post by: jfdublyu on April 23, 2006, 07:00:55 PM

no, remove th valve cover and everything is accessible. it's easier to understand once your looking at the engine. i'm in a hurry right now, i'll explain later

Title: Cam timing advance
Post by: fitz318is on April 23, 2006, 07:52:39 PM

Just pop the valve cover and go to town.  You dont gain or loose any power, you just change the power band. I have tried it and gone back to the stock settings because it gave me a rough idle.

Title: Cam timing advance
Post by: jfdublyu on April 26, 2006, 11:07:10 PM

my idle stayed the same, but i have an AFPR and other mods that might have something to do with it, idk