| Author | Topic |
|---|
Location:
Adelaide
Registered:
September 2003
|
|
18rgeu camshaft timing confusion
|
Sun, 21 November 2004 12:03
|
 |
well after being inspired by people100 and his 18rgeu turbo engine, a small note in that thread got me thinking that the reason my car is so frigging hard to start is because the cam timing is out.
i pulled the rocker cover off and the pin for the intake was in the left most hole (looking at the engine from the front of the car), while the pin for the exhaust is in the second hole from the left.
at top dead centre on the crank, when rotated in a clockwise direction, both cams sat at roughly 11:58 if i was to read it like a clock.
the green book said to advance the timing put the pin in the next hole to the left, to retard it, put it in the next hole to the right.
now here is where i am confused. I had nothing to loose so i set both pins to the third hole from the left and this in fact seemed to pull them up to 12:00.
according to the book i retarded the timing, but the cams advanced further around so i don't understand the logic in that.
I am sure it is simple and someone should be able to tell me pretty simply, prefferably without abuse or a hint of mocking. but why is it that when i retard the timing (according to the book), the cams are rotated further around?
on another note, my car now starts first time (an experience i have never had since getting the car 2 years ago  ) but the idle is a little sporadic when cold, is there like a fast idle mechanism on the 18rgeu for cold starts?
|
|
|
Toymods Social Secretary
Location:
Sydney
Registered:
July 2002
|
|
Re: 18rgeu camshaft timing confusion
|
Sun, 21 November 2004 12:07
|
|
dude - that is possibly the ROUGHEST cam timing i have ever heard done.
Read the green book PROPERLY on how to set cam timing.
# set crank to TDC
# set cams to TDC compression (notches pointing vertical)
# attach chain etc etc etc
Simply moving nothces forward and back is a bit rough... maybe you were lucky though and got it right...
|
|
|
Location:
Rocklea qld
Registered:
February 2003
|
|
Re: 18rgeu camshaft timing confusion
|
Mon, 22 November 2004 07:00
|
|
|
PM me and ill explain how i got mine done and going and what problems i had..
|
|
|
Location:
Adelaide
Registered:
September 2003
|
|
Re: 18rgeu camshaft timing confusion
|
Mon, 22 November 2004 07:51
|
|
he he
my bad i read it for the 21st time and now i understand it is the way they wrote Valve timing advanced and retarded valve timing confused me and i interpreted it wrongly (even after that many reads).
although in my defence i did read it thoughroly and they DO say to adjust the timing by adjusting the pin left or right and say nothing about pulling off or putting on the chain. cheers witzl
now to work out cold idling.
i will pm you tonight if i get home at a godly hour people100
|
|
|
Location:
Adelaide
Registered:
September 2003
|
|
Re: 18rgeu camshaft timing confusion
|
Tue, 23 November 2004 01:02
|
|
so does anyone know if I can adjust the idle speed for cold starts or is it based entirely on fuel enrichment?
is the dizzy supposed to retard timing automatically to help accomodate for those cold mornings?
i can feel i am close to having a good running engine...please help.
|
|
|
Location:
Canberra
Registered:
December 2002
|
|
Re: 18rgeu camshaft timing confusion
|
Tue, 23 November 2004 02:05
|
|
|
yup fuel it is
|
|
|
