Club G40 Forum

Technical => Engine and Transmission => Topic started by: polocoupe on January 16, 2009, 06:59:36 pm

Title: timing for g40 252/276 schrick camshaft
Post by: polocoupe on January 16, 2009, 06:59:36 pm: hi all, i have fitted a 252/276 schrick camshaft to my g40 and was wondering what the timing should be set at... standard timing is 6degrees+/-1degrees.... any help would be much appreciated.

cheers matt
Title: Re: timing for g40 252/276 schrick camshaft
Post by: Robin on January 16, 2009, 07:38:52 pm: isn't it the same as standard?
Title: Re: timing for g40 252/276 schrick camshaft
Post by: hayesey on January 16, 2009, 10:22:25 pm: ignition timing is 6deg before tdc +/-1deg. That'll just stay the same regardless of cam.
Title: Re: timing for g40 252/276 schrick camshaft
Post by: poloeatonm45 on January 16, 2009, 11:04:07 pm: so would this apply to all cams for the g40? including this stupid eaton spec cam i,ve been tryin to fit for at least a year now?

steve
Title: Re: timing for g40 252/276 schrick camshaft
Post by: hayesey on January 17, 2009, 10:26:58 am: on the ignition timing yeah, not necessarily on the cam timing though you'd need to ring the manufacturer about that.

Isn't the issue with the eaton cam that it hits the head casting? That's not that unusual I've got a spare head here someone has had an aftermarket cam in and they've had to file bits of the head casting so that the lobes don't hit it.
Title: Re: timing for g40 252/276 schrick camshaft
Post by: djtez on January 17, 2009, 05:40:17 pm: the spark timing would be the same no matter the cam i assume?
it would be timing of the lift on the cam you would want to adjust which means a nice shiny new camshaft pulley which PPP do in some nice red and blue and maby gold /?
Title: Re: timing for g40 252/276 schrick camshaft
Post by: djtez on January 17, 2009, 05:49:37 pm: oh and i thought it was 5degree before tdc.. ?
wat it says in the old unfaithfull hanyes? dont it ?? ............
Title: Re: timing for g40 252/276 schrick camshaft
Post by: poloeatonm45 on January 19, 2009, 06:35:40 pm: Quote from: hayesey on January 17, 2009, 10:26:58 am
on the ignition timing yeah, not necessarily on the cam timing though you'd need to ring the manufacturer about that.

Isn't the issue with the eaton cam that it hits the head casting? That's not that unusual I've got a spare head here someone has had an aftermarket cam in and they've had to file bits of the head casting so that the lobes don't hit it.

yeah you are right on the eaton spec cam the lobes do hit but its only just so you just have to use a dremel and file a lil metal off the buckets its really a very simple job and sounds worse than it is.
but i still cant time the bloody cam up right

steve
Title: Re: timing for g40 252/276 schrick camshaft
Post by: xrrich on September 05, 2013, 05:11:34 pm: I know this is an old thread but i was wondering whether this cam should be set up to standard g40 cam timing marks.

Or does it need advancing?

Thanks
Rich
Title: Re: timing for g40 252/276 schrick camshaft
Post by: Jezza-7 on September 05, 2013, 05:17:58 pm: I run mine with standard pulley. Only advanced ignition timing.
Title: Re: timing for g40 252/276 schrick camshaft
Post by: Merrick on August 31, 2014, 10:57:03 am: Hi I've been thinking about getting a schrick cam for my 40, did you see some good gains in power? And how was the drivability? Thanks.
Title: Re: timing for g40 252/276 schrick camshaft
Post by: Jezza-7 on August 31, 2014, 09:07:25 pm: You can tell when its in the "power band" as you hear exhaust note change around 3k for me. Power difference, i couldnt tell as i had a lot done as once.
Title: Re: timing for g40 252/276 schrick camshaft
Post by: Jacque on September 03, 2014, 04:08:06 pm: Quote from: Jezza-7 on August 31, 2014, 09:07:25 pm
You can tell when its in the "power band" as you hear exhaust note change around 3k for me. Power difference, i couldnt tell as i had a lot done as once.

it does that on stock cam aswell :) from around 2750

i m interested aswell wether it has a good gain or not
Title: Re: timing for g40 252/276 schrick camshaft
Post by: Jezza-7 on September 04, 2014, 01:14:22 am: Does it? I never noticed it.
Title: Re: timing for g40 252/276 schrick camshaft
Post by: Merrick on September 27, 2014, 05:27:20 pm: I've also been looking at the Newman cams and even piper cams. Has anyone heard anything about these?