• Hey Guest!
    British Car Forum has been supporting enthusiasts for over 25 years by providing a great place to share our love for British cars. You can support our efforts by upgrading your membership for less than the dues of most car clubs. There are some perks with a member upgrade!
    **Upgrade Now**
    (PS: Upgraded members don't see this banner, nor will you see the Google ads that appear on the site.)
Tips
Tips

I think I wiped out my GP2 cam........

Share this page

Well, I got the head off and found a few more surprises! First, that #3 cam follower looked just like the lobe, major eaten up and pitted. The others look fine. Took the head to an area machine shop to check it out...spring pressure, valves, etc. Two of my exhaust valves are leaking, all oily and black on the stems. Will wonders never cease. The machinist will take the head completely apart, re-do the valves, check the springs (I gave him some spring pressure specs), magnaflux the whole thing and reassemble. Should have back in 5 days.
Now to take the front of the engine off (radiator, pulley, cover, etc.) to pull that cam.

Guess I will look at some bearings while under there. All this while trying to throw a crawfish boil for 20 friends of my son and get ready to go see Irma Thomas rock at the casino.

Too many balls in the air.
 
Sounds to me like the lifter may have been the culprit,starting a galling process with the cam lobe. I would have the new tappets checked for hardness at a machine shop, or have seller of same verify rockwell numbers for his product.I was told you don't want anything softer than rockwell 54.
anybody in your area able to check the damaged lifter for rockwell hardness? That could answer the question.
 
Now that I have taken the other lifters out, they all are showing varying degrees of breakdown! Yes, I ordered hardened lifters along with a new cam.
 
my understanding is when things are case hardened its only a few thousands thick, I read when crankshafts and cams are hardened they are put in a furnace with ammonia gas which creats a hardened surface, if you wear through the surface it wears out fast from there
 
Back
Top