This is some data that fspGTD collected from a SAE paper. It pertains to the solid lifter cams. All the solid lifter cams (1.5, 1.6na, 1.6TD) were the same until the hydros came out.
Below are the 1.6lD / TD camshaft specifications, from the 1.6lTD SAE paper. I hope this information does the trick for calculating the optimal intake manifold runner length:
"The intake valve has a maximum valve lift of 8 mm. Intake opening is at 5 degrees aTDC and intake closing at 14 degrees aBDC where both timings are rated at 1 mm of camlift. The maximum valve lift of the exhaust valve is 9mm, with opening and closing at 27 degrees bBDC and ~ degrees bTDC respectively. Intake valve clearance is 0.2 to 0.3 mm, and exhaust valve clearance is 0.4 to 0.5 mm. All these geometrical dimensions are identical with that of the 4-cylinder naturally aspirated Diesel engine."
If more information is necessary, I might also have a plot of the cam displacement vs rotational angle as well (IIRC, such a plot exists in the original 1.5l VW Diesel SAE paper.)
And from TDIMeister's cam database:
AAZ cam (@ 1mm lift):
Intake valve opens -6.0, closes 20.0.
Exhaust valve opens 25.5, closes -6.5.
Max lifts aren't listed.
;DThanks for all your help!
My weekend is now booked and will let you all know how I get on.
Just need some earplugs for the neighbours kids.
Well, no AAZ's at our local friendly breaker, so an early TDi cam out of a Mk3 passat it is. Unknown miles, which is a nuisance as the mileometers in these things are electronic, so who knows?
. Just for the interested the lobe measurements were, Base circle 37.98mm, Best Tip to Base 46.28mm, Worst 46.12mm.
So lift would be assumed as 8.3mm. But looks as though some wear is on its way. 0.16mm, but hopefully it will make less racket than the present occupant. Wish me luck.
Cam specs as taken from my Peter Russek Pocket Mechanic manual
Valve Timing - Up to 1985 - 1.6 L
Inlet valve opens........5 ATDC
inlet valve closes........13 ABDC
Exhaust valve opens....27 BBDC
Exhaust valve closes...5 BTDC
Valve Timing - from 1986 - 1.6l - JK and RA engine
Inlet valve opens........6.5 Atdc
inlet valve closes........13,5 ABDC
Exhaust valve opens....25,5BBDC
Exhaust valve closes...6.5 BTDC
Valve Timing - 1.9l - 1Y and AAZ
Inlet valve opens........6 ATDC
inlet valve closes........20 ABDC
Exhaust valve opens....25.5 BBDC
Exhaust valve closes...6.5 BTDC
Valve Timing - 1.9 l - 1Z
Inlet valve opens........16 ATDC
inlet valve closes........25 ABDC
Exhaust valve opens....28 BBDC
Exhaust valve closes...19 BTDC
Hope this helps
:)Cheers for that, but I'm not too worried about timing, as both cams would have a piston sitting at TDC with bugger all gap to the valve heads. Valve lift and base circle would be good, but I will know in an hour as it's going in now. Lots of swearing in T Minus sixty five minutes.
Tourettes Engineering Services
Hmm....... Deep thought. Just measured the cam as is in the engine. This is a SB engined GTD, so should be the real deal, Base Circle same or similar to above 37.98mm No.1 cam peak I measure 46.82mm, No.2 is 45.80mm, No.3 is 46.81mm, Oh joy, clapped cam, I have found it! No.4 45.82mm WTF says I, No.5 45.82mm, depression setting in, No.6 46.80mm, No.7 45.82mm, No.8 46.82mm. So the good news is I have a fine camshaft, If I have it right, the valves go EIEIIEIE, if so then Exhaust lift is 8.84mm ish, Intake lift is 7.84mm ish. Weird, go figure.
