A 2QM20 actually has 3 locations for zincs. The rear plate on mine is tapped for a zinc, the stud of the Zinc does not go thru the plate. The plate is held on with 4 bolts. It does need a thin paper gasket around the inside edge. The one in the front of the engine in this video is also fitted into a plate & uses a paper gasket. If the square, screw in fitting is stuck, you can unbolt the plate and use a vise to loosen the Zinc fitting or just unscrew the zinc from the back of the plate & replace it. Both of these zincs use a rubber washer between the Zincs & the plates. I use some permatex gasket cement on the gaskets to prevent leaks. There is a third zinc in the 3 way raw water fitting that is also on the front of the engine, 3 zincs total. I've been changing mine regularly for 38 years.
2QM20H comes out with 2 anodes in the head as standard, , did you consider the fact that not if but when the anode melts it's going to errrr leave a hole for pressurised water to come squirting out of?
That will not work as the gasket will act as a insulator. The zinc has good electrical connection, but the plate is not directly contacting the engine block. (Atleast not well, only through the bolts which may or may not be a good idea. Check your zinc and if it hasn't disappeared, then you know it didn't work.
A 2QM20 actually has 3 locations for zincs. The rear plate on mine is tapped for a zinc, the stud of the Zinc does not go thru the plate. The plate is held on with 4 bolts. It does need a thin paper gasket around the inside edge. The one in the front of the engine in this video is also fitted into a plate & uses a paper gasket. If the square, screw in fitting is stuck, you can unbolt the plate and use a vise to loosen the Zinc fitting or just unscrew the zinc from the back of the plate & replace it. Both of these zincs use a rubber washer between the Zincs & the plates. I use some permatex gasket cement on the gaskets to prevent leaks. There is a third zinc in the 3 way raw water fitting that is also on the front of the engine, 3 zincs total. I've been changing mine regularly for 38 years.
Looks just like my E32 engine room. I am in the middle of putting in a new diesel tank. Love my 1978 E32.
SV All Aboard Best of luck to you! I love my E32 as well!
Local rigger is almost done putting the new rigging on her. I am so looking forward to getting her back onto the water.
Is that an Endeavour 32? That engine access looks very familiar.
James Levens Yep! Sure is!
3 zincs is standard for these engines. To in the front and one in the back.
2QM20H comes out with 2 anodes in the head as standard, , did you consider the fact that not if but when the anode melts it's going to errrr leave a hole for pressurised water to come squirting out of?
The anode has a steel core with threads.
That will not work as the gasket will act as a insulator. The zinc has good electrical connection, but the plate is not directly contacting the engine block. (Atleast not well, only through the bolts which may or may not be a good idea. Check your zinc and if it hasn't disappeared, then you know it didn't work.
The bolts are metal....
the engine is supposed to have two anodes
3 anodes.
Trash. Dont follow this explanation. The motor needs two zincs
3 zincs.