Head Gasket - fit wet or dry?

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dandywarhol
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Head Gasket - fit wet or dry?

Post by dandywarhol » Tue Apr 08, 2014 8:51 pm

Do you grease the new gasket or fit it dry?

TIA, Alan
1996 TRX 850, blue, Ohlins 46HRCLS, Race Tech Gold Valves, 0.90 springs, Venom pipes, R6 brakes............
1974 Yamaha RD250A, Candy Blue
1998 Yamaha SZR660, blue of course
1967 Yamaha TD1C 250, Blue and white

sanddune51
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Re: Head Gasket - fit wet or dry?

Post by sanddune51 » Tue Apr 08, 2014 9:13 pm

Fitted mine dry, it's been perfect :D

Mark.

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Killerwhale
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Re: Head Gasket - fit wet or dry?

Post by Killerwhale » Tue Apr 08, 2014 9:16 pm

dandywarhol wrote:Do you grease the new gasket or fit it dry?

TIA, Alan
I use a thin layer of copper spray, forbidden in SE but got a pair of cans on evilbay...

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dandywarhol
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Re: Head Gasket - fit wet or dry?

Post by dandywarhol » Tue Apr 08, 2014 10:32 pm

Thanks for the quick replies folks. The head came off really easily after 18 years (and I know it hasn't been off before) and not much gasket residue on the surfaces - that's why I wondered if Yamaha used oil on the surfaces when it was initially fitted....................
1996 TRX 850, blue, Ohlins 46HRCLS, Race Tech Gold Valves, 0.90 springs, Venom pipes, R6 brakes............
1974 Yamaha RD250A, Candy Blue
1998 Yamaha SZR660, blue of course
1967 Yamaha TD1C 250, Blue and white

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dandywarhol
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Re: Head Gasket - fit wet or dry?

Post by dandywarhol » Wed Apr 09, 2014 12:56 am

Another question.....................

Item 6 the "Guide Stopper2" bolts onto the cam caps at the points shown. What it doesn't show is a tapped hole in the head on the other side(close to where the number 6 is) for a 6mm bolt and a hole in the "stopper" but in the 2 heads I have, neither have a bolt in the hole :? anybody else come across this missing bolt?? #-o Also the Stopper2 is more a tunnel than a guide in the pic, I suspect the pic is an early TDM mk1.

Image
1996 TRX 850, blue, Ohlins 46HRCLS, Race Tech Gold Valves, 0.90 springs, Venom pipes, R6 brakes............
1974 Yamaha RD250A, Candy Blue
1998 Yamaha SZR660, blue of course
1967 Yamaha TD1C 250, Blue and white

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Tarwetijger
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Re: Head Gasket - fit wet or dry?

Post by Tarwetijger » Wed Apr 09, 2014 7:46 am

You use the "empty" hole when you are fitting the valve cover ( with a lot of bolts). :)

It is a tunnel but on the inside is actually a guide, although it is a small one.
Killerwhale wrote:
dandywarhol wrote:Do you grease the new gasket or fit it dry?

TIA, Alan
I use a thin layer of copper spray, forbidden in SE but got a pair of cans on evilbay...
Really? Why is it forbidden?

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Re: Head Gasket - fit wet or dry?

Post by alextrx850 » Wed Apr 09, 2014 8:19 am

+ 1 to the copper spray...we use it in the auto repair to coat bare metal prior to spot or plug welding....makes a nice blue flame when lit too.....not allowed in Sweden..KW .?

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dandywarhol
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Re: Head Gasket - fit wet or dry?

Post by dandywarhol » Wed Apr 09, 2014 10:25 am

Tarwetijger wrote:You use the "empty" hole when you are fitting the valve cover ( with a lot of bolts). :)

It is a tunnel but on the inside is actually a guide, although it is a small one.
Killerwhale wrote:
dandywarhol wrote:Do you grease the new gasket or fit it dry?

TIA, Alan
I use a thin layer of copper spray, forbidden in SE but got a pair of cans on evilbay...
Really? Why is it forbidden?
Thanks Tarwetijger, apologies for my stupidity :oops:
1996 TRX 850, blue, Ohlins 46HRCLS, Race Tech Gold Valves, 0.90 springs, Venom pipes, R6 brakes............
1974 Yamaha RD250A, Candy Blue
1998 Yamaha SZR660, blue of course
1967 Yamaha TD1C 250, Blue and white

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Killerwhale
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Re: Head Gasket - fit wet or dry?

Post by Killerwhale » Wed Apr 09, 2014 6:18 pm

alextrx850 wrote:+ 1 to the copper spray...we use it in the auto repair to coat bare metal prior to spot or plug welding....makes a nice blue flame when lit too.....not allowed in Sweden..KW .?
No, i never looked up why though....guess it´s some environmental redwine drinking hag who descided that...

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dandywarhol
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Re: Head Gasket - fit wet or dry?

Post by dandywarhol » Wed Apr 09, 2014 9:09 pm

Yamaha recommend a dry fit. Surfaces thoroughly clean (naturally) and degreased.
1996 TRX 850, blue, Ohlins 46HRCLS, Race Tech Gold Valves, 0.90 springs, Venom pipes, R6 brakes............
1974 Yamaha RD250A, Candy Blue
1998 Yamaha SZR660, blue of course
1967 Yamaha TD1C 250, Blue and white

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