.png "Powered by vBulletin")
Swapping a 80+ head onto a 79 engine. What gaskets do I use?
80+ or 79-78 ?
Dear wife has graciously given me a rebuild as a Christmas gift.
80+ or 79-78 ?
Dear wife has graciously given me a rebuild as a Christmas gift.
-
-
Gaskets are different?Ed
To measure is to know.
Mikuni O-ring Kits For Sale...https://www.thegsresources.com/_foru...ts#post1703182
Top Newbie Mistakes thread...http://www.thegsresources.com/_forum...d.php?t=171846
Carb rebuild tutorial...https://gsarchive.bwringer.com/mtsac...d_Tutorial.pdf
KZ750E Rebuild Thread...http://www.thegsresources.com/_forum...0-Resurrection -
Check the part numbers on the Alphasports web site for the 79 and 80 to confirm
The internal gaskets should be the same
The carb intakes are different
I just have to ask, why are you swapping heads?1978 GS 1000 (since new)
1979 GS 1000 (The Fridge, superbike replica project)
1978 GS 1000 (parts)
1981 GS 850 (anyone want a project?)
1981 GPZ 550 (backroad screamer)
1970 450 Mk IIID (THUMP!)
2007 DRz 400S
1999 ATK 490ES
1994 DR 350SESComment
-
All the gaskets are the same.
But the intakes, carbs, etc. are very different...1983 GS850G, Cosmos Blue.
2005 KLR685, Aztec Pink - Turd II.3, the ReReReTurdening
2015 Yamaha FJ-09, Magma Red Power Corrupts...
Eat more venison.
Please provide details. The GSR Hive Mind is nearly omniscient, but not yet clairvoyant.
Celeriter equita, converteque saepe.
SUPPORT THIS SITE! DONATE TODAY!
Co-host of "The Riding Obsession" sport-touring motorcycling podcast at tro.bike!Comment
-
Unless he has some mechanical defect, the only advantage I could see is that he gets the larger intake ports of the CV-type carbs.Originally posted by Big T View Post
All of the gaskets should be the same. They did not change until '82, when they added three bolts to the valve cover.
One other change for '82 was the clutch cover. There is a squarer back end on it where the hump was removed from where the kick starter used to be.
86turbodsl, are you also aware that the intake cams are different from '79 to '80?
The exhaust cam timing is the same, but the intake opens and closes 10 degrees earlier on the '80.
.sigpic
mine: 2000 Honda GoldWing GL1500SE and 1980 GS850G'K' "Junior"
hers: 1982 GS850GL - "Angel" and 1969 Suzuki T250 Scrambler
#1 son: 1986 Yamaha Venture Royale 1300 and 1982 GS650GL "Rat Bagger"
#2 son: 1980 GS1000G
Family Portrait
Siblings and Spouses
Mom's first ride
Want a copy of my valve adjust spreadsheet for your 2-valve per cylinder engine? Send me an e-mail request (not a PM)
(Click on my username in the upper-left corner for e-mail info.)Comment
-
Thanks for the info guys.
To shed some light on the subject, I recieved the bike with a head that had a few broken studs. The quote to fix/remove the broken studs (EDM) was more than the cost of a replacement Ebay head and carbs in good shape.
So what gaskets do I need?
Base (cylinder is off)
Head
Valve
O rings
Anything else?
I think I only have the 79 cams. That should drop in though.Comment
-
Valve sealsOriginally posted by 86turbodsl View Post
Cam Chain tensioner gasket
Breather gasket
Exhaust gaskets
May as well just buy a full gasket set. Be cheaper and easier1979 GS750EComment
-
Base O rings (okay, pear shaped)
Intake O rings
Cam chain guides as needed
Air box
Throttle cables (?)1978 GS 1000 (since new)
1979 GS 1000 (The Fridge, superbike replica project)
1978 GS 1000 (parts)
1981 GS 850 (anyone want a project?)
1981 GPZ 550 (backroad screamer)
1970 450 Mk IIID (THUMP!)
2007 DRz 400S
1999 ATK 490ES
1994 DR 350SESComment
-
Hmm. Wondered about throttle cables. Anyone know for sure?
The later carbs are in really good shape.Comment
-
I have had the stock 26's, 34 CV's and 29 smoothbores on the same bike and never had to change the cables.
Does that answer your question?
DanielComment
-
Yup. Thanks!Comment
Comment