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Which sprocket keyway for 270 cam timing
Posted: Sat Mar 03, 2007 12:26 pm
by nickm
I am fitting a Piper 270 cam in my 3.9.The duplex timing chain sprocket has multiple keyways ranging from +6 to -6.Which position would be best?I will be fitting stage 3 heads and it is going in a Westfield seight.Thanks Nick
Posted: Sat Mar 03, 2007 12:35 pm
by katanaman
There is no answer to this, you need to time your cam to find out for yourself as it changes between engines. If you don't want to time it then put it in the middle key which should be zero and if nothing else safe. IMHO if you have spent the money on big valve heads then you really need to take the time and do it properly but that's up to you.
If you want a PDF that explains how to time a cam then drop me a pm with an email address to send it to.
Posted: Sat Mar 03, 2007 1:14 pm
by nickm
Thanks for that.Also could anyone tell me which way round the crank sprocket goes.Does the boss face the front or towards the block.Cheers Nick
Posted: Sat Mar 03, 2007 3:32 pm
by adamnreeves
nickm wrote:Thanks for that.Also could anyone tell me which way round the crank sprocket goes.Does the boss face the front or towards the block.Cheers Nick
Didn't realize there was an orientation. Does this picture answer your question:
Higher res one here
http://www.westfieldbuild.com/images/hi ... G_1545.JPG
Posted: Sat Mar 03, 2007 4:26 pm
by nickm
Worked it out using Haynes manual.The front end on your engine is different to my early 3.9.Thanks anyway Nick
Posted: Sat Mar 03, 2007 4:36 pm
by katanaman
Sent
Posted: Sat Mar 03, 2007 5:01 pm
by stevieturbo
nickm wrote:Thanks for that.Also could anyone tell me which way round the crank sprocket goes.Does the boss face the front or towards the block.Cheers Nick
if its on the wrong way, you wont see the vernier or dot markings.
Posted: Sat Mar 03, 2007 6:14 pm
by adamnreeves
A good point you mark, obvious really!
stevieturbo wrote:nickm wrote:Thanks for that.Also could anyone tell me which way round the crank sprocket goes.Does the boss face the front or towards the block.Cheers Nick
if its on the wrong way, you wont see the vernier or dot markings.
Posted: Sat Mar 03, 2007 9:36 pm
by nickm
Thanks for the pm Marki.Will read through it properly tomorrow when I am sober .Nick
Posted: Thu Mar 08, 2007 3:57 pm
by Blueman
Hi
I am to install a new cam on my V8. If you please would send a copy of the PDF that explains how to time a cam I would be very happy.
Posted: Thu Mar 08, 2007 4:06 pm
by katanaman
will do it when I get home
Posted: Thu Mar 08, 2007 11:39 pm
by katanaman
sent
