81 xs1100 big bore on 82 xj1100?

I can't find a big bore kit for the xj1100 anywhere. Only thing I've found was a 1196 big bore kit for the 81 xs1100
(https://www.cruzinimage.net/2017/08/29/80-81-yamaha-xs1100-1196cc-bigbore-pistons-kit-74-5mm/) would this work on the xj1100? Also, if anyone knows where ANY size big bore kit is for the xj1100 please send me a link. I have found one in stock and the seller wanted $1,200 for it.

 

I an not a fan of overboring to the extreme on XJ11. Thats the biggest you can do it. I did my XS11 with .5mm over size.
Yamaha xs1100 XS 1100 Piston Kit Oversize OS +0.50/Piston Rings Piston Rings | eBay
These are really nice pistons, I was impressed with the quality. You also don't need a special head gasket , you do if you go 74mm .

I have used the CruzinInage pistons on another project and I can say you get what you pay for. Not bad but not great either.

 

Was performance lost with the crusin? I am just looking for options to keep my engine alive. Not looking to boost power.

 

Preformance was the same. Problem was the piston was not the right size. I had to hone the to get them to fit right and the rings are very fragile. I broke some trying to get them on the piston. Even used a piston ring tool to expand and they snapped.

 

That doesn't sound great at all.
I found a wiseco on ebay for $173 https://www.ebay.com/itm/3342610373...198923&hash=item4dd382a8ff:g:qDQAAOSwlFVhv7os do you think this would be a good one to get for a rebuild? I just don't want to end up with a worse engine.

 

Those will work but I don't see a head gasket included in the kit. The 74mm bore requires a special head gasket, the standard wont work.

 

Yea that was my concern. I can find 1196cc head gaskets. Do you think that would work?

 

here is one for xs11
79-81 YAMAHA XS1100 1196cc BIGBORE HEAD GASKET 11-VG285HG-1 | eBay

for xj11
82 YAMAHA XJ1100 1196cc BIGBORE HEAD GASKET VG-Y850981HGBB | eBay

How many miles on your engine? There are other options besides overboring.
Standard size rings are still available

 

About 44,000. Cold compression is 125-130 across all cylinders.

 

Good compression and not to many miles it should be OK. Why why are you wanting to replace the pistons?
I did mine because low compression and pitted cylinder walls. runs great now.

 

Well, they seem to be getting rarer, and there just isn't any modern day bike like it. I want to at least have one if the need ever arises. I am probably going to send it on the kit.

 

I know you concerns about parts. I have several parts bikes and many bins of spares.

 

I am a bit worried about the compression, I'll probably pick that kit up you linked. the 0.5 just to have. The manual says it should be about 142psi but I have 125,127,125,125. Since they're all pretty close I am hoping it's valve timing or clearance.

 

I went to buy that kit and it's not for sale anymore, know where else I could get it?

 

I clicked the buy it now button and i could purchase it.

 

Oh hey it's back in stock. Awesome.