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General Category => General Discussion => Topic started by: Rabscuttle on June 13, 2021, 03:22:22 PM
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Hello everybody,
I have a 16 v7ii stone with 40k and Im trying to replace the head gaskets. Im having trouble removing the valve part to get to the head. Is there a way to do this without damaging the fins?
Thanks,
Steve
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Hello everybody,
I have a 16 v7ii stone with 40k and Im trying to replace the head gaskets. Im having trouble removing the valve part to get to the head. Is there a way to do this without damaging the fins?
Thanks,
Steve
Do you mean the gaskets are sticking? If so, a rubber mallet has worked for me in the past. Maybe shoot some WD40 or PB BlastR in there.
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Thanks. I just realized that I need
(https://i.ibb.co/xJvv7hw/16236165013889124364429698993448.jpg) (https://ibb.co/xJvv7hw)
to remove these two nuts. This is going beyond what Im able to get done.
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Thanks. I just realized that I need
(https://i.ibb.co/xJvv7hw/16236165013889124364429698993448.jpg) (https://ibb.co/xJvv7hw)
to remove these two nuts. This is going beyond what Im able to get done.
Oh yeah, I was going to ask if you made sure you got all the bolts and nuts out. I’m no mechanical genius, but I’ve taken them off as well when I had to replace a head due to to a seized header stud. Wasn’t too hard, just got to make sure you get them torqued appropriately and keep things clean in there.
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It does make things easier! Thanks for the info. The header seems to be preventing removal. I did get the fitting off. Do I need to remove the entire exhaust?
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Why are you replacing head gaskets?
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(https://i.ibb.co/YWPZHZM/Resized-20210613-162438.jpg) (https://ibb.co/YWPZHZM)
Both sides are leaking.
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This is the thread I was hoping for motivation.
I will be doing the same thing this winter.
:popcorn:
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This series of videos might help:
https://www.thisoldtractor.com/moto_guzzi_technical_training_videos_eng.html
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(https://i.ibb.co/YWPZHZM/Resized-20210613-162438.jpg) (https://ibb.co/YWPZHZM)
Both sides are leaking.
oh, is that common on small blocks?
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This is the thread I was hoping for motivation.
I will be doing the same thing this winter.
:popcorn:
I'll be your huckleberry.
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Thanks! He doesnt put any goop or sealant on the gasket. Ive been reading i need to put permatex300. I have new OEM metal gaskets. Should I?
Theres a nick and scratches all around. Do I need to have it resurfaced?
(https://i.ibb.co/r6xVfzC/20210613-181313.jpg) (https://ibb.co/r6xVfzC)
(https://i.ibb.co/QX5NjTZ/20210613-171200.jpg) (https://ibb.co/QX5NjTZ)
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I'll be your huckleberry.
:thumb:
Theres a nick and scratches all around. Do I need to have it resurfaced?
Looks like the old gasket was scraped off with a metal instrument that scratched the surface. A light sanding on a flat surface might help, but I wouldn't chance it.
The gouge looks deep enough that you would have to remove too much material. It doesn't go across the contact surface, so I wouldn't worry about it... provided you use the Super 300.
If it leaks again, then I would bring the heads to a machine shop to get cleaned/checked.
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The old one peeled right off. I havent looked at the other side yet. As far as I know Im the only one thats monkeyed with it. Ill try the permatex and see what happens. Thanks for the help.
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FWIW, small block head gasket leaks are mentioned in Guzziology, and a brush on sealant is recommended. Those look just like the head gaskets on my V65, which I just replaced, along with the valves. No leaks!
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Hi pat80flh,
Where did you buy the valves from?
Did you replace guides or rods too?
Thanks,
P
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When I rebuilt the heads on a customer's V65SP and few years ago, I bought the valves, guides and seals from MG Cycle. I also "updated" to Nevada (single) springs which required the seats and retainers from the same model, all purchased from Harper's.
https://www.mgcycle.com/index.php?main_page=product_info&cPath=68_127&products_id=2583
https://www.mgcycle.com/index.php?main_page=product_info&cPath=68_127&products_id=4401
https://www.mgcycle.com/index.php?main_page=product_info&cPath=68_127&products_id=2687
https://www.mgcycle.com/index.php?main_page=product_info&cPath=68_127&products_id=2572
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These heads had only 18k miles, guides had no discernible wear. I bought valves from MG Cycle and hand lapped them in. Re-used the springs and retainers.
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:thumb:
Thanks for the responses.
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A sheet of 400 grit wet or dry on a piece of glass is what most people use to get out those nicks. Use a figure 8 pattern.
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They leaked because nobody re-torque them at the 600 mile first service. Don't make the same mistake.