Handwritten numbers in cylinder heads
#1
Handwritten numbers in cylinder heads
Hi all,
im working on Head gasket job on my 2004 D2, im a noob, it’s my first one. I bought this D2 with clean carfax and 60k miles, is in pretty good condition. I drove it for around 2000 miles and never overheated but noticed small coolant leak in the front side of the engine right where the block and heads meet, and a valve cover gasket leak so I decided to adventure into a full HG job.
When I pulled the Cylinder heads I noticed that had handwritten marks on them with what seems to be a number 8 in one and number 22 in the other (see pics). Does anyone knows what these numbers mean?
im working on Head gasket job on my 2004 D2, im a noob, it’s my first one. I bought this D2 with clean carfax and 60k miles, is in pretty good condition. I drove it for around 2000 miles and never overheated but noticed small coolant leak in the front side of the engine right where the block and heads meet, and a valve cover gasket leak so I decided to adventure into a full HG job.
When I pulled the Cylinder heads I noticed that had handwritten marks on them with what seems to be a number 8 in one and number 22 in the other (see pics). Does anyone knows what these numbers mean?
#3
It looks as though you might be working on cleaning those heads up yourself. Don't bother.
The general (strong) consensus is that whenever you do a HG job, heads should be professionally worked to insure a perfectly flat mating surface. A valve job is generally part of the job as well. A machine shop will dip them removing all carbon and they will be like new.
The general (strong) consensus is that whenever you do a HG job, heads should be professionally worked to insure a perfectly flat mating surface. A valve job is generally part of the job as well. A machine shop will dip them removing all carbon and they will be like new.
#4
For both my P38 and D2 I had the heads machined at a shop, but I didn’t have the valves done (both engines only around 150,000 km). If I do another one and have the time, I want to try to resurface it myself. I think I could do as good a job. I don’t regret not having the valves done on these relatively low mileage engines.
#6
#7
It looks as though you might be working on cleaning those heads up yourself. Don't bother.
The general (strong) consensus is that whenever you do a HG job, heads should be professionally worked to insure a perfectly flat mating surface. A valve job is generally part of the job as well. A machine shop will dip them removing all carbon and they will be like new.
The general (strong) consensus is that whenever you do a HG job, heads should be professionally worked to insure a perfectly flat mating surface. A valve job is generally part of the job as well. A machine shop will dip them removing all carbon and they will be like new.
Last edited by RoverMasterTech; 02-17-2024 at 09:18 PM.
#8
As RMT says, a good thick glass plate with sandpaper. I’m interested in how you do the 3 angle valve seats without a machine. Many years ago I worked at a light aircraft engine overhaul shop where we did very good 3 angle grinds, but we had all the equipment. I also have no trouble believing you do a better job than any automotive machine shop.