New rattle after removing head

[Paul.1478]

Well F. by the time I got home (about 35 miles) and ran it a hard the last mile when I parked it big oil drips. This seems a lot worse when I rev it higher.
I took it back apart (tank off carbs off) I do not think it is coming from the cam chain tensioner. It looks dry. I am thinking may base gasket? is it possible a base gasket can cause an oil leak? It may have happened one of the times i removed the head, just lifting up on the head may have slightly lifted the cylinders and ripped the gasket.
I will clean it up this weekend and do the corn starch trick. 
Thanks for any comments.

Paul

[RPM - Robert]

Yes, the base gasket can cause a leak. Not too common but I have seen it a few times the OEM fiber material gasket "pooches out" and causes a leak. I think Noel or someone had a good photo of one on their bike but I can't seen to find the thread right now.

The original OEM gaskets were a fiber material which could also tear unless you pulled the jugs up however this is unlikely. The replacement Yamaha base gaskets are metal.

[Paul.1478]

Thanks Robert. I am thinking while I was removing the head (that was suck) I may have lifted it and not known). I don't know what else it can be.
Ill get this cleaned up this weekend and hope to track it down. If base gasket Ill need to get an order together with you for all parts required. Head gasket base gasket, rubber round seal for head (original problem) and what ever else you think.
I was able to talk my buddy into doing this. He has been building race motors since he was 17, 2 strokes for ever and also race 4 stroke vintage bikes.
Hoping to bring to him and work with him 2 days and get it done...

[Paul.1478]

I did the corn starch trick.
Leaking from the  tensioner still
The hole is 23 mm deep. The bolt uses 12mm and the threads are a total of 14 mm.
So I will go get a new m6-1 tap and try and make more threads.
The alternator is in the way so I'll have to use a wrench on the end of the tap

I am going to use a stud as suggested.
New gasket ordered.
I hope to put this behind me soon.

[Pat Conlon]

Still, better news than a base gasket

[FJmonkey]

Looks like an early snowfall in FJ land. Good find, as Pat said, not the base gasket. Yea...

[Paul.1478]

Yes I am happy it is not the base gasket for sure.
I am a little worried about taping this because the generator is on the way. If it was on a bench I would feel better.
Just going to take my time.

I have had so much great advise from this form.

Corn starch trick.
Hole being longer that threads
Use a stud instead of a bolt.
And this is just with this one issue.
Not to mention RPMs suggestions and support.
So glad I found this. 

[Tuned forks]

MOnkey, I thought the same thing.  Looked like a snow pic from one of our more Eastern members.

Joe

[Paul.1478]

I took yesterday off to help a friend move but he called at 730 and said closing was delayed until 1.
So I went and got a M6 threaded rod and new M6 tap.
I was able to tap all the way to the end of the hole cleaning the tap during. I removed the 2 middle intake boots and used a 5.5M wrench to turn it due to no room. I then ground off a lot of the end of the tapered end of the tap to create a bottoming tap (not in stock or I would have got one).

Was able to get about another 2 turns.

After cleaning the hole well I applied a little loctite and screwed the threaded rod in and tightened with 2 bolts locked. As the other side was good I did not want to push my luck so just screwed in another threaded rod with loctite. I really like that idea a lot. I hope to never have to remove this again but if I do...
Just waiting on the gasket from RPM that should arrive today.
as for moving, 98 degrees in ATL yesterday. NOT FUN but always good to help a friend.

[RPM - Robert]

Make sure the intake manifold o-rings aren't flat and hard before you put those intakes back on. If you get a leak there you could be chasing your tail again.

[Paul.1478]

Thank you Robert. I hope to be done chasing anything.
I replaced them when you did my carb rebuild about a year ago. They looked good but will remain aware incase of any strange issues!

[Paul.1478]

No surprise to me when I got home the gaskets were in the mail box.
Thanks RPM.
Put it all togeTher. Ran it like last time and 0 oil.
Cleaned the corn starch off. Added a second nut just to be sure nothing backs off.
Cleaned and waxed the whole bike.

Riding to work tomorrow. Hoping for the best but seems to be good. 
Fingers crossed!

[Paul.1478]

Well 89 miles and no oil!!
I cannot express you guys how happy I am. I am back in love with my FJ. I almost gave up. 3 weeks ago I would have sold it for 1500 to the first person to come take it.

Big thanks to oldrider for telling me the holes were longer than the threads. Never would have guessed.
And to Pete for the suggestion to use studs. Great idea!!

7 months I have been chasing this down.