2-Cylinder Photos - Post Yours!

[Chuck78]

The photo is not showing up still for me.

I just scored my third GS450S/81-83 GS450E gas tank, $200 for the nice one with almost acceptable paint, some touch-up needed, all black, $150 for one with no dents but a lot of surface rust, now I just scored one with no rust but a few small dents for $90!
The GS550 hot rod 740cc build will get 1 of them. And I may build a 2nd GS400/425 big bore, but more of a streetable semi-budget build...
One project at a time Chuck... bike at a time!!! Doesn't stop me from nabbing the deals and scarce vintage performance parts when they pop up... I now have about double as many high end aftermarket vintage shocks as I do bikes!



On the photo, try and find a share link or something that shows you the URL address of just the photo. Something that is not a secured URL that can only be seen when you are signed in on your computer or device.
You can also upload a limited amount of photos to the GS website. Then they will post as a small attachment thumbnail. But you can use UBB code to post them full size in the post by typing this sort of code:
]IMG[http://www.photosuckit.com/photoURLi...dHERE.jpg]/IMG[
Basically like that accept with your correct photo address where my example URL is, and the brackets or squared off parentheses I had to reverse so that it did not try and read it as code. So the brackets go the opposite directions around the image tag code. Hopefully that goes through and you can see everything I just typed

[solarae]

1981 GS250T getting there

Finally figured out how to get a full size photo up. Thanks for having me in the group. I still need to paint the tank. Actually, I have a tank from a GS450E that I intend to swap over but it needs some work.



Edy

See if this works.

Nope.

[pete]

Yep, definitely need folding pegs, I think solid pegs would just be asking for trouble.

Cheers on the pipe repair tips too, will keep those in mind when I get to doing something with it. I really need to get my Kat done so I can take the 450 off the road for a few weeks and give her the TLC she deserves.

[Chuck78]

Cheers Chuck, good to know!

Definitely let us know how they end up, very handy with the nub too.

The footpeg isn't a huge issue for me, the dent in the header is the real PITA but I'll live with it for the moment.

Get a vice-grip slide hammer, & harbor freight weld-on dent puller studs. MIG weld it to the ground\prepared spot in the middle of the dent. Then with a good Mapp Gas or oxy-acetylene torch, heat the dent area only, mostly the perimeter of it, until it's glowing red (don't heat the center much). Attach vice grips threaded onto the end of the slide hammer, and whack away.

They sell 2 stroke dirt bike kits to seal/plug off the ends of the pipes with clamps, and have a schraeder valve in one cap, so you can pressurize the insides of the pipe to 30psi & then apply heat into the dent area, and the air pressure alone pops it out once the metal is red hot! A pipe that has been flushed out thoroughly to remove unburnt fuel and oil residue is preferred, and pressuring woth nitrogen or even argon for a welder would be preferred even further to make things safer. Most just use air however. Perhaps you could rig up your own setup like this to remove the dent.

Sorry about the Hayabusa rearsets photos, they are not very clear!
Here is a better pic:

I'm definitely planning on using these and may even get another set. The aftermarket Billet rearsets that I have do not have folding foot pegs, and I consider that pretty crucial, I think it would save them in a crash, but would sacrifice scraping up a lot more of the bike. I need some sportbike sliders strategically positioned on both of the bikes that I will be putting these on.

[pete]

Cheers Chuck, good to know! I looked into some SV rearsets a while back and one particular type looked like it could be a relatively simple swap over but I haven't gone any further yet. Definitely let us know how they end up, very handy with the nub too. The footpeg isn't a huge issue for me, the dent in the header is the real PITA but I'll live with it for the moment.

[Chuck78]

Love it Chuck, thanks for posting! Are the 'Busa rearsets just the stock ones? I'd be keen to see how they mount up. My left peg is a bit bent after throwing it down the road a couple of weeks ago and when I get my Kat done I'll be refreshing the 450, been contemplating some rearsets for it.

Darnit Pete, sorry to hear about the mishap with the bent footpeg!!!!!

The Hayabusa rearsets were appealing to me as they have a 3 point rubber vibration isolator mount setup, folding pegs, and a sacrificial little steel peg that sticks down and out off of the end of the footpeg so that you grind the sacrificial nub before you actually grind the real footpeg!

Here is the first photo that I could find on a Google image search of the Busa rearsets and passenger foot pegs as well, I'm not using those, didn't even get any. These are the same as what I picked up for dirt cheap. I'm sure there is something slightly lighter and more trick looking, but these will do the job very well.

Chuck, cool assemblage of parts. I love and appreciate your dedication to increasing CCs and power.
Runeight, I followed your resto thread. The bike came out beautifully.

Thank you very much for the kind words. I wanted to post some larger pics but with PB screwing us it didn’t happen. I use an iPad 95% of the time and still can’t get a program to work. And family medical issues.

[dorkburger]

Chuck, cool assemblage of parts. I love and appreciate your dedication to increasing CCs and power.
Runeight, I followed your resto thread. The bike came out beautifully.

1982 GS400EX, Euro model.

Fun bike, love it.

[pete]

Love it Chuck, thanks for posting! Are the 'Busa rearsets just the stock ones? I'd be keen to see how they mount up. My left peg is a bit bent after throwing it down the road a couple of weeks ago and when I get my Kat done I'll be refreshing the 450, been contemplating some rearsets for it.

[Chuck78]

I dig these old ads

[Chuck78]

Here is the #4 bike on my project bike list... the first two are dirt bikes, one doesn't need that much work , actually removing the museum-quality pieces off of it and fixing up some beat up body work for it... then a full restoration and modification of a 1977 PE250B Pure Enduro Suzuki. Then a new top-end on my gs750. Then this! Should be early summer...

Poor pic, but the bike in the background is my 79 GS425E that I picked up for dirt cheap, my gs750 is in front of it, I was comparing the tanks when I first put an E tank on my 750. I did not like the blue striping, so that was the first thing to go.

The 425 had been laid down in the city on both sides, shifter pedal, brake pedal, all of the lights, they are all cracked or bent. Photo makes it look much nicer! It is fairly clean other than the damage from low speed drops




Even though I like the styling of the wire spoke models better, particularly the GS400X with its speedometer and tachometer with the indicator lights built into the tach face, I had to have a 425 cylinder and head at least, for my project, as the 425 cylinder will accept slightly bigger sleeves... You see where I'm going with this?! Also the 79 models got the extra bolt at the front of the cam chain tunnel on cylinder head and cylinder to stop the early 77/78 model oil seepage (all 77-78 GS's had that issue, ans Z1, KZ1000, etc; 79+ GS's this was remedied. So a 425 cylinder and cylinder head were an absolute must on the list.

Due to a mishap on my 920cc GS750 engine, a slightly bent valve cause the mixture to be off and caused some serious detonation, ruining one piston and the head on number 4 cylinder as well. So I ended up with three good spare 72 mm Pistons. The compression height and pin size, as well as valve placements, are identical spec to the 400 / 425, 750, and 850. This was a no-brainer... I envisioned some custom pistons to go 502, or maybe 516cc, with GS450 sleeves installed in the 425 cylinders (blocks are slightly different stud spacing and deck height so they are not interchangeable between 1st & 2nd Gen GS4xx twins). Anyhow, I decided for now that I will run the 72mm 489cc setup since I have it right here... the pistons are very old school, early 1980s, a bit on the heavy side, but should do the job...

Once I get my 750 ported head back from Rapid Ray, I will be dismantling a spare 425 engine to send him the head and cylinder for resleeving and head porting. I have a hollow core set of GR650X camshafts, they are a decent performance upgrade to a GS 400 / 425 / 450. I may however have webcams re-grind them into a bigger profile, and I think Ray has me talked into going shim under bucket on this engine especially.
While I am going for it, if I weigh the pistons versus stock 425 pistons, and determined the big old MTC Pistons are too heavy for this balance shaft twin, then I may go ahead and have a set of JE Pistons or or Carrillo Pistons custom made... 502cc at minimum (73mm)

I was interested in going CR 31 Round slide smoothbore carbs on it, but my buddy had a set of RS 34 is with a broken slide, and slides are not available, despite most other parts on the carb being available. So like the pistons, I have three, might as well forget using it on a 4-cylinder, re-rack these with some custom shaft spacing & fuel Tee adapters, to fit the 120mm spacing on the gs425! This will not be AHRMA legal however. It will be a canyon carver and track day by primarily, but I sincerely hope to start doing some WERA Formula 500 racing with it at some point, where the RS 34 carbs would probably be allowed to slude on the rules, unless I start beating enough people and someone protests them! I'm a long way off from the podium spot on the racetrack, however. I need to attend some riding clinics and get more track time in


Here are all the parts I've amassed for this much anticipated project:











*GS450S/E tank (the sought after classic...!!!)
*Giuliari GS400/425 Italian aftermarket seat
*GS750/1000 disc brake wheels with D.I.D. MT3.50X18 & MT2.50X18 alloy rims
*GS500 fork and front brakes, CB1 (?) 310mm rotor, braided stainless lines
*GS1100E alloy triples (82-82 non-leading axle)
*Custom billet GS500 fork brace
*Fox Factory Shox emulsion versions (very rare, awesome valving, nitro charged)
*MAC/Kerker 2-1 exhaust hybrid (have a different gs twin 2-1 I may also use)
*Hayabusa rearsets (I have some billet Old School speed rearsets I may also use)
*Dresda style swingarm custom made ( similar to stock wheelbase, I might end up having to use a GS1100E aluminum arm that I have as this thing will not want to keep the front end on the ground, I need the extra length)
*early slabside GSXR underling rear caliper and hanger (not pictured, will need to turn down the diameter of this rotor a fair bit to use the GSXR caliper hanger which looks very trick)

If I do race, I have a set of Akront TC rims to use (3.00x18 rear), as the 3.50 rear is too wide to legally run in WERA Formula 500. It would be a good excuse to have a second set of wheels with dedicated race rubber on them anyhow. Because I can definitely see myself riding this bike deep in Appalachian Southeast Ohio with all of the amazing twisty roads that I have mapped out for our rides...



.

[Chuck78]

Inspirational photos...

Rich Graver, veteran WERA racer (Formula 500, etc):


Much more recent version of Rich's race bike:


Another project of his:



A GS400 race bike I saw posted on another forum:



I believe this is a member's bike, perhaps this is posted earlier in this thread, but I didn't scroll back recently through all 9 pages:


.

We have been able to get it running but I'm not sure if the gas tank that is included even goes with the '85 bike. So a Service manual would be great just to see what goes where and what doesn't belong if you know what I mean. any help you guys can give would be great.
Service Manual
OEM Parts Vendors
Original Pictures - indepth

Hey belkgd - welcome! I'm working on a 450L project as well, check it out in my signature. I'm just up 40 from you in Durham - let me know if you need any help with anything. Also - check BikeCliff's site for manuals, instructions, etc.