164B/L/S cams



All 12v V6 164 cams:

L/H cam 3033 is longer and has notch at rear to drive 164 distributor and timing mark on #2 bearing journal same as GTV6/Milano.

R/H cam 3031 shorter cam and timing mark on #3 bearing journal same as GTV6/Milano.

164B/L intake lobe height 9.1mm (0.360") exhaust 6.4mm (0.250")
164S intake lobe height 10.1mm (0.400") exhaust 6.4mm (0.250")


I have a set of 164S cams that also have a B698 stamped on end of R/H cam amd B698 stamped on shaft of L/H cam.

 

Steve
Many thanks for this detailed reply. Any gotchas to consider while installing in a 2.5 milano?
Dave

 

Is you Milano a running car right now with timing belt installed?

 

Yes, running well (just passed nj inspection), but the timing belt / tensioner needs replacement, and there's a tapping noise under one of the valve covers suggesting a valve adjustment may be in order. Seems like a good time to swap the camshafts.
Looking forward to your thoughts!
Dave

 

OK do you have new timing belt and tensioner, cam hub oring seals and oil seals, VC gaskets, 1 5/8" socket, valve shims various sizes, cam hub puller, cam pulley spanner tool?

What type tensioner does engine now have oil fed or new style mechnical?

How much mileage on water pump?

See my stuff here for some info: http://www.alfabb.com/bb/forums/164...b/forums/164-168-1991-1995/141647-alfa-164-alfisto-steves-maintenance-tips.html

 

Have access to above tools, unclear what type of tensioner I have yet.... Measure cam lobes, looked more like 11mm to me... Found 3031 an 3033 respectively on cams but not b698...
Service history unknown on car so waterpump will be replaced as well. Will check out your link as well.
Dave

 

You need to verify which tensioner you have pronto if oil fed is it leaking or not, etc.

 

Hoping it's oilfed (ie hydraulic) since i think these were made better than mechanical. Buying both hydraulic rebuild kit and mech tensioner and returning one that isn't needed.
Tried removing pssgr side tensioner cover to check but realized all belts had to come off to get it loose and we ran out of time that day.
Judging by amt of oil on front of engine (but not using, burning, or dripping oil -- rare for any alfa), I'm hoping it's hydraulic.
Car has 78k miles but service history is unknown, so this could be the original tensioner.
Dave

 

Check carefully

Best thing to do for used cams is to measure each lobe and inspect for wear aka scratches or flake, especially at lobe tip. If measure well but aren't smooth as glass have them polished. Cams can be re-welded and ground rather easily and economically even though some have mixed feelings about it, and if you know the specs - you could have new cams made for less than the price of new Alfa cams. Just my input.