Giving high mileage bike some love. Now ran when parked?

[jetmechmarty]

I'm pretty sure that $170 price is per piston, not a four cylinder set.

https://www.cruzinimage.net/2017/08/29/80-81-yamaha-xs1100-1196cc-bigbore-pistons-kit-74-5mm/

That’s not how I read it. I pull the trigger expecting the whole shebang. What is the tariff from Japan ?

[DiverRay]

Marty, If you can find one ring set for the Weisco I've got the rest here. Bought it from Carla years ago, and used one set of rings to replace a set on Special Ed's bike when we put the used big bore kit in it. I was going to put it in one bike, then I bought a bored barrel set with pistons from someone on this site. That is going into my engine I'm working on now.

[cajun31]

https://www.cruzinimage.net/2017/08/29/80-81-yamaha-xs1100-1196cc-bigbore-pistons-kit-74-5mm/

That’s not how I read it. I pull the trigger expecting the whole shebang. What is the tariff from Japan ?

I sent them a message asking about shipping and tariffs. Of course it is like 4 in the morning there now so might not get a response back until later this evening or tomorrow. I played around with the big bore kit and acted like I was ordering it and the total shipping came to $43.20 to Brandon. Probably the same to you. One thing I did notice though was that they ship via ePacket and when you google that service from Japan it states that as of August 2025 it is no longer exempt from customs and tariffs from Japan. Why I sent them a message asking about the tariffs and such. Will let you know when they respond. By the way from the website concerning the kit:
DESCRIPTION-◆10-XS1100BB◆
*80-81 Yamaha XS1100 Bigbore pistons kit with Head Gasket
Aftermarket
Piston size: 74.50mm( 3mm Oversize )
*Set includes: pistons, pins, clips,rings and head gasket
Note: Cylinder boring required

[Radioguylogs]

What is the tariff from Japan ?

I believe the tariff should be 15%.

[cajun31]

Just received a reply back from Cruzin Image. This was the response I received.

Thank you for your inquiry.


Regarding the additional tariffs:

For purchases made on eBay, the shipping fee already includes the additional customs duties.


However, for purchases made through our website, all customs duties and any required fees within the United States are not included.

For this reason, we have suspended shipments to the United States from our website.


Thank you for your understanding.


Best regards,

Mitsuo

All is not lost though. Just go to Ebay and look up user name cruzinimage_co1484, or just click on here and it will bring you to their Ebay store. You can then just simply do a search for that kit and that buy it now price is the total price excluding taxes. Of course Ebay has to get you on the taxes. I just tried it on Ebay and my total for the kit to Brandon MS would be $248.03.

[jetmechmarty]

My current status is an XS650 engine in pieces at Temple of Speed. So, that first.

I’ll put some MMO on top of the pistons for a soak. Maybe some Seafoam in the gas and give it a run. I’ll pull the jugs after the other bike comes back. For now, I can run and ride the XS11. Once I can measure the bores, the decision will be easier. I’ve had a good run with this bike. It still makes me grin.

Thanks to all of you who responded so far.

[DEEBS11]

Marty, in 2011 my KZ750 twin had a seized motor when I purchased it for $50.00 at a tag sale. I freed it up with MMO after soaking the pistons and rings for two weeks. The compression was off on the seized cylinder more that 10%. I rode it work every day sun, rain and snow for over 50,000 miles. It used a little oil between 3K mile oil & filter changes. That motor never let me down in conditions that an engineer would have said it could never do. These Japanese engines are VERY forgiving. My advice, just ride it. it will more than likely outlive all of us.

[jetmechmarty]

Any thoughts on dumping a bunch of Seafoam into the tank? Can I hurt it doing that? Techron? It has been running almost exclusively on E0 for the last eight years, so I expect there's no detergent in my gasoline.

I hit the start button yesterday and it fired up immediately. I wish I had time to take it for a ride.

[DiverRay]

How old is the gas? If it's over 4 months, and you didn't use Sta-Bil, then drain and start with new gas. In a 5 gallon tank, raw gas is good for about two months if it's E0. E10 will turn in about three weeks untreated. Not bad yet, but going fast.

[Larrym]

Imma big fan of the "Italian Tune-Up" in a situation like dis. (O_O)

An "Italian tune-up" for a motorcycle involves riding aggressively at high RPMs for a sustained period to burn off internal carbon deposits on spark plugs, valves, and inside the exhaust. Originally for carbureted engines, this method helps modern bikes by increasing combustion heat, clearing carbon buildup, and reducing soot in catalytic converters.

Key Aspects of a Motorcycle Italian Tune-up:

• Purpose: The goal is to reach high engine temperatures to initiate decarboxylation, which burns off carbon deposits.
• Method: Ride in lower gears for longer periods or accelerate hard to near the redline, rather than just holding a high speed.
• Benefits: This technique can fix fouled plugs, clean fuel injectors, and remove moisture and soot from the exhaust system.
• Safety: Ensure the engine is fully warmed up to operating temperature before pushing it hard.
• Modern Applicability: While most effective on older carbureted bikes, it is still useful for modern motorcycles that are often used for short trips or low-RPM city riding.

This technique is often used to resolve poor running conditions without disassembling the engine.

FoAr Example- I gotta get my 1989 Ford Ranger emissions tested every YEAR. (╯•ᗣ•╰)

BefOaR each run on the guvment Dyno? (O_o)

I warm up the engine and then use the SeaFoam spray thingy to shoot the whole can into the engine intake whilst it's runnin' and then shut it down afterwards to soak overnight. ( •_•)

Next day I start it and make a run fer the expressway ASAP. I drive it HARD and in the FAST lane wit' da caffeined out Krazies foAr 10 miles out-n-back. =͟͟͞͞ =͟͟͞͞ ﾍ ( ´ Д `)ﾉ

I show up at emissions testing immediately afterwards and the emissions is so low they usually reset the machine cuz they cain't believe the numberz. (´⊙ω⊙`)

FoAr Yur Special? (O_o)

Besides SeaFoam (in the right proportions to the NEW gas you fill it wit....) in the tank and doin' the Italian Tune-Up? ( •_•)

I'd "Pre-Treat" the day before/overnight wit da SeaFoam spray. (･‿･)

The bestest way I can think of gettin' the seaFoam Spray into the running motor while it's hot enuf to actuakly DO anything and still be there to let it soak overnight? Warm it up, pull off the intake boot "nipples" and use the sync gauge vac lines all Tee'd together like I showed in the "Der Raucher" (the smoker) test. (^_^)

Gonna have to keep the rev's high enuf so's it won't die whiles yur a-sprayin. Be sure that after you turn the engine OFF you keep the spray a-goin' whilst the engine is spinning down to a stopp. That's will get you the most bang fer Yur Buck with the SeaFoam spray process.

You'll know afterwards if it wurky or not. 彡໒(⊙ᴗ⊙)७彡

[LAB3]

Any thoughts on dumping a bunch of Seafoam into the tank? Can I hurt it doing that?

Generally speaking I use an ounce per gallon as specified on the label every oil change, I used to do it every 1500 miles but I don't think it did much.

The Italian Tune Up has some merit, it did wonders on my XS if I had done short runs for a week or two. Run it at highway speed in third gear for a few miles, you might be surprised.

[Larrym]

My symptoms are sooty plugs, hard starting from cold, and minimized engine braking.

Them's ALSO symptoms I got when I had in infamouse GFix/Ebay idle jets installed. (ᗒᗣᗕ)

(I mean AFTER I'd used the carb pagoda to discover the janky float needles/seats and fix the fuel level problems...)

Bike wouldn't start w/o opening the throttle to give it some AIR foist. No mOaR just yoinkin' out the choke and hit da starter but'hun.(•﹏•)

After 1 minute of "Idling" I could turn of the choke ENTIRELY and the motor would not just keep runnin' but it also would PULL when the engine wuz still COLD. Nurmally, I'd have to keep the choke half-way fOaR a mile or two til the motor warmed up a bit befOaR I could turn off the choke. (⇀‸↼‶)

The GFix jets run so RICH it's like keeping the choke halfways on fOaR the entire ride....even when the engines HOT enuf to not need that extra fuel. (｡･･｡)

ALL Spark plugs were BLACK and sooty on the ring but ok lookin' at the electrode/anode. (●´⌓`●)

Truthfully, in the 1.5K to 4.5K rpm range the bike wuz like a XS750 intead'a an XS1100. Bogged down iffin' I tried to do the usual roll-on the throttle at these Rpms. (๏ᆺ๏)

I HATED the way it drove/ran cuz it wuzn't the Superbike I had grown to luv. (－‸ ლ)

You absolutely 100 per cent sure that them GFix jets never made their way into your BS-34s??? (O_o)

[jetmechmarty]

How old is the gas? If it's over 4 months, and you didn't use Sta-Bil, then drain and start with new gas. In a 5 gallon tank, raw gas is good for about two months if it's E0. E10 will turn in about three weeks untreated. Not bad yet, but going fast.

I don't think my gas is over six weeks old. I've had at least one run on it over the winter.

[bikerphil]

Not going to hurt anything using a half can of Berrymans or Seafoam.

[Radioguylogs]

Them's ALSO symptoms I got when I had in infamouse GFix/Ebay idle jets installed. (ᗒᗣᗕ)

(I mean AFTER I'd used the carb pagoda to discover the janky float needles/seats and fix the fuel level problems...)

Bike wouldn't start w/o opening the throttle to give it some AIR foist. No mOaR just yoinkin' out the choke and hit da starter but'hun.(•﹏•)

After 1 minute of "Idling" I could turn of the choke ENTIRELY and the motor would not just keep runnin' but it also would PULL when the engine wuz still COLD. Nurmally, I'd have to keep the choke half-way fOaR a mile or two til the motor warmed up a bit befOaR I could turn off the choke. (⇀‸↼‶)

The GFix jets run so RICH it's like keeping the choke halfways on fOaR the entire ride....even when the engines HOT enuf to not need that extra fuel. (｡･･｡)

ALL Spark plugs were BLACK and sooty on the ring but ok lookin' at the electrode/anode. (●´⌓`●)

Truthfully, in the 1.5K to 4.5K rpm range the bike wuz like a XS750 intead'a an XS1100. Bogged down iffin' I tried to do the usual roll-on the throttle at these Rpms. (๏ᆺ๏)

I HATED the way it drove/ran cuz it wuzn't the Superbike I had grown to luv. (－‸ ლ)

You absolutely 100 per cent sure that them GFix jets never made their way into your BS-34s??? (O_o)

Gfix sells K&L kits. The K&L folks put the right sized pilot jet in their kit, but it is right sized 42.5 for the VM family of carbs, not the BS34.

I don't know why the 42.5 size is different than the 42.5 size for the BS carbs, but it is.