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Oil leaking from head gasket!

  • Thread starter Thread starter Sunburn
  • Start date Start date
Compression figures look v. healthy to me, 100psi is traditionally the lowest acceptable figure. #4 is a bit high in relation to the others (the more even your compression figures the better), but not much you can do about that.
 
Compression Test

Compression Test

I will redo the test once she is running again and gets a little warm. I'm thinking with 49K miles this thing has been stepped up to 10.25:1 or 10.5:1 new pistons. Sunburn is the one with the 13.5K miles bike. \\:D/

This is a new tester and when I used it on my 1981 GS70E I got lowest 145 up to 165 on compression. Manual calls out 171 max. :)

I did find a problem though. See pictures :confused:

All the cam lobes look redone, chain streach is 157mm (v.s. 175mm service limit) so it is tight.

http://www.posplayr.100megsfree3.com/gs750/gs1100E_cams.jpg

Here is the problem Tach did not work, gauge works , tach drive gear is so-so but the gear on the exhaust cam is crap!!!!:(

http://www.posplayr.100megsfree3.com/gs750/gs1100E_speedo_gear.jpg

I assume there is nothing to do but look for a new cam and hope all is original.

Posplayr
 
Last edited:
posplayr said:
I assume there is nothing to do but look for a new cam and hope all is original.

Posplayr
Click to expand...


New cam i think you have to replace everything that comes in contact with it or you get premature wear. Someone here should know more about that then I.


P.s. did my thread get jacked? LOL, it's cool I got the help I needed. I looked over your compresson thread, very interesting.......keep going i'm enjoying it. :-D
 
tfb said:
I'll bet it's perished O-rings that reside around the inner pair of front head bolts. Go to here on AlphaSports and part# 17 is the one that you'll need to replace.

You'll need two of those rubber rings, one for each nut. 8-[
Click to expand...



Ya, it's been 9 months but I went with replacing the O-rings and it's been 50 miles without a drop. Done deal.

Thanks for the input. :)


Mark
 
Sunburn

Sunburn

Glad all is well. You getting any ridding in those 9 months?
Get the oil cooler fittings resolved?

Posplayr
 
posplayr said:
Glad all is well. You getting any ridding in those 9 months?
Get the oil cooler fittings resolved?

Posplayr
Click to expand...



No and Yes.


Planned a long ride this week end when I noticed my insurance expired on 9/16. Forgot to mail the check. Sending it today!
 
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