Re: '37 115C valves

Posted by Ken_P On 2020/12/30 13:16:23

I just went through something similar on my car, and can report that after reshaping the tappet screws, the valve train is much quieter.

Ross actually helped me, and we chucked each tappet up in a lathe and ground the tappet screw convex while it was rotating.

I think your plan to decarbon, new valves, and fix the tappet screws should provide good results.

If you look at the service manual, it discusses a modification to the exhaust valve guides that reduces carbon build up. It may be worth seeing if you have the newer or older style valve guides.

If you do end up driving out the valve guides, put a block over wood over the valve seats!!! Several years ago, I was driving out valve guides, the hammer slipped, and I ruined one valve seat - turned a ring and valve job into a complete overhaul!

Good luck!