Brings a few questions: When searching for pistons to use in unusual race engines, do you have to have assorted pistons on hand, so you can measure their fit?
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Originally posted by GregT View Post
Brings a few questions: When searching for pistons to use in unusual race engines, do you have to have assorted pistons on hand, so you can measure their fit?
[SIZE=10px]"Only [/SIZE][I]fe'[/I] collected the old way, has any value.[SIZE=10px]" from [U]His Majesty O'Keefe[/U] (1954 film)
1982 GS1100G- road bike, body, seat and suspension modded
1990 GSX750F-(1127cc '92 GSXR engine) [SIZE=10px]track bike, [/SIZE]much re-engineered
1987 Honda CBR600F Hurricane; hooligan bike, restored[/SIZE]
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Wow! Quite an interesting job.[SIGPIC][/SIGPIC]
When consulting the magic 8 ball for advice, one must first ask it "will your answers be accurate?"
Glen
-85 1150 es - Plus size supermodel.
-Rusty old scooter.
Other things I like to photograph.....[URL="http://instagram.com/gs_junkie"]instagram.com/gs_junkie[/URL]
[URL]https://www.instagram.com/glen_brenner/[/URL]
[URL]https://www.flickr.com/photos/152267952@N02/albums/72157713345317771/[/URL]
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Originally posted by Buffalo Bill View PostBrilliant!
Brings a few questions: When searching for pistons to use in unusual race engines, do you have to have assorted pistons on hand, so you can measure their fit?Last edited by GregT; 01-15-2020, 01:32 PM.
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Originally posted by GregT View PostInitially search by bore size needed. I've got a couple of service data books which have bore and stroke dimensions - and some guessing followed by internet checking. Then elimination by gudgeon pin size. Suzuki pin circlip part nos have the pin size as the last two digits so it's possible to work backwards to the pin dia. The early GSXR400 pistons came from a local wrecker with rings in very good condition. They're about 4mm taller than the FZR ones which worked with the 4mm plate under the barrel sealing the unused side. The valve cutaways had to be moved closer together which I did by hand with a die grinder.
I thought this kind of a search might turn up alternative options, and yeah experience would help.[SIZE=10px]"Only [/SIZE][I]fe'[/I] collected the old way, has any value.[SIZE=10px]" from [U]His Majesty O'Keefe[/U] (1954 film)
1982 GS1100G- road bike, body, seat and suspension modded
1990 GSX750F-(1127cc '92 GSXR engine) [SIZE=10px]track bike, [/SIZE]much re-engineered
1987 Honda CBR600F Hurricane; hooligan bike, restored[/SIZE]
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Fired up the Fizzy yesterday and balanced the carbs. Starts on choke (starter circuit) now like it should but I can't get it to rev very high at all on the choke. With the "choke" lever fully on it's only revving up around 2-2.5K rpm. Weird. I guess I should just quit complaining about it.Current Bikes:
2001 Yamaha FZ1 (bought same one back)
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Came out of the supermarket on Friday and was greeted by a small pool of oil under the GS. That damned valve cover gasket leaking - again.
That's been about 1000 miles since the rebuild and it was leaky from one side about 300 miles ago, but I sorted that.
Took the valve cover off, which of course meant the fairing bracket wouldn't allow it to come out to the side, so off with the fairing and its bracket, total pain in the bahookie. Still, once started, easy done.
That's the valve cover gasket that was in the NE engine set. On examination it's gone a bit hard and shiny, but I couldn't see any damage or indentations where the leaks were coming from - nor on the metal faces.
Cleaned everything up and fit a new one tomorrow - I have a couple of so-called Vesrah ones, but they arrived in plain packaging, so I'm not sure what they are. There's another one I bought a couple of years ago, which came from the same source as the previous known-good one at the same time, so I might fit that instead. I don't recall if that was OEM or not, but I do recall buying quite a few spares from the London Suzuki Centre at the time, so it might be one of the good ones.
Hey-ho; just occurred to me it might be a good time to fit the front springs, too. May as well, with the fairing off.---- Dave
79 GS850N - Might be a trike soon.
80 GS850T Single HIF38 S.U. SH775, Tow bar, Pantera II. Gnarly workhorse & daily driver.
79 XS650SE - Pragmatic Ratter - goes better than a manky old twin should.
92 XJ900F - Fairly Stock, for now.
[IMG]http://weathersticker.wunderground.com/weathersticker/gizmotimetempbig_metric/language/english/global/stations/03960.gif[/IMG]
Only a dog knows why a motorcyclist sticks his head out of a car window
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I feel your frustration, Grimly.
After and wash and wax, I discovered a base gasket leak. Ugh, shoulda left it dirty. It didn't leak before the wash. Maybe I can rub some dirt back in and stop the leak, LOL.[SIZE=10px]Roger
Current rides
1983 GS 850G
1982 GS1100GK[/SIZE]
[IMG2=JSON]{"data-align":"none","data-size":"full","src":"https:\/\/visitedstatesmap.com\/image\/AZARCACOIDILINKSMONVNMOKTXUTWYsm.jpg"}[/IMG2] Gone but not forgotten 1985 Rebel 250, 1991 XT225, 2004 KLR650, 1981 GS850G, 1982 GS1100GL, 2002 DL1000, 2005 KLR650, 2003 KLX400, 2003 FJR1300
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Nothing bike related but my project today was to repair a fractured natural gas line for the heater in the garage. Now I can work on a bike in comfort.Larry
'79 GS 1000E
'93 Honda ST 1100 SOLD-- now residing in Arizona.
'18 Triumph Tiger 800 (gone too soon)
'19 Triumph Tiger 800 Christmas 2018 to me from me.
'01 BMW R1100RL project purchased from a friend, now for sale.
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Finally got around to fixing the oil leak on my Katana today... it had only been sitting on my workbench waiting for me to get to it since September.
Generator cover is dry as a bone now, only needed to adjust the gasket so part of it wasn't folded inside of the housing. Four months for that?!? It took me less than 1/2 an hour to fix! Man I suck...
Anyway, it's alive!
[SIZE=8px][COLOR=#000000][FONT=tahoma]2005 Suzuki Hayabusa
2010 Suzuki GSX1250FA
2015 BMW RnineT[/FONT][/COLOR]
Dave[/SIZE]
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The little FZR has an oil leak from the cam cover too...I knew it had a leak but hadn't managed to track it down until I saw a drip yesterday.
Front right corner of the cam cover - the unmodified end. Room's so tight that it'll be easier to drop the engine to have a look.
Not sure why it's leaking there. It's a rubber insert in a channel so it really shouldn't. If I find there's a drainage problem I think I can
add an external drain without too much trouble.
Got the tacho working. It blips to 10 grand on the stand smoothly. Won't idle below about 3 grand. Not surprising given there's next to no crank weight, a big inlet cam and big carbs.
Fuel pump to sort before a test ride. And a customer bike to sort first...
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After cleaning off the residual oil from the top and front, I was happy to see no new oil joining it.
Then got on with fitting the coil relay mod I've been meaning to do for years.
Relay 1 is for the aux lighting, relay 2 is the coil / ignitor feed.
I'm happy that it now starts with the slightest stroke of the button.
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But I think I might need to fit a longer Single Point Ground bolt soon.---- Dave
79 GS850N - Might be a trike soon.
80 GS850T Single HIF38 S.U. SH775, Tow bar, Pantera II. Gnarly workhorse & daily driver.
79 XS650SE - Pragmatic Ratter - goes better than a manky old twin should.
92 XJ900F - Fairly Stock, for now.
[IMG]http://weathersticker.wunderground.com/weathersticker/gizmotimetempbig_metric/language/english/global/stations/03960.gif[/IMG]
Only a dog knows why a motorcyclist sticks his head out of a car window
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IMG_1540.jpg
I spent considerable time wrestling with it but I got my new RS36s in. Also have new computer so I haven't figured out how to flip the picture as yet.1979 CBX, AW440 Maico, GS1150EF
[IMG]http://www.thegsresources.com/_forum/image.php?type=sigpic&userid=41649&dateline=1447792849[/IMG]
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IMG_1545.JPGMy old kill/start/throttle needed to be changed out to a push pull throttle, I drove down to my local ebay supplier and found a 6 wire Yamaha kill/start that had to be converted to the 3 wire GS system. I'm no electrical whiz so it took a couple of hours but I finally got it figured out.Last edited by wyly; 01-22-2020, 08:51 PM.1979 CBX, AW440 Maico, GS1150EF
[IMG]http://www.thegsresources.com/_forum/image.php?type=sigpic&userid=41649&dateline=1447792849[/IMG]
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When I was picking up my new kill/start switch I noticed they had '84 GS1150ef up on the table. A complete restoration, everything was broken down to the last bolt, sand blasted, powder coated, polished, clear coated. Nothing has been left untouched. I don't think they ever looked this good new. I'll go back next week to check the progress.
IMG_1542.jpgLast edited by wyly; 01-22-2020, 09:00 PM.1979 CBX, AW440 Maico, GS1150EF
[IMG]http://www.thegsresources.com/_forum/image.php?type=sigpic&userid=41649&dateline=1447792849[/IMG]
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