maxim X valve shim

1985, 1986, 700 or 750, US or Canadian, they all use the same shims.

 

What size shim do you need? I'll check my pool....... Yes, believe it or not, i do have a very small and limits shim pool for the X

 

say it ain't so

He wants to buy a kit

 

I guess I missed that on the first readthrough… If you wants to buy a kit fine, whatever…

As far as shim diameter, it doesn't really matter as long as it still fits inside the bucket! 7 mm, 7.5 mm… Inside of the bucket is a lot bigger than that-

 

You need to measure your clearance(feeler gauge) in order to find out what puck you need. As time passes the shim(puck) will probably be thinner as the valve is pushed further into the seat.

 

Just want to clear up any confusion.

Yes a 7.5mm shim will fit inside the bucket, however the valve stem diameters vary between models. As far as I can tell, the current kits are not compatible because they need to fit on the 5mm valves on these models:
FZ700T 1987 700 FZ700 Street
FZ700TC 1987 700 FZ700 (Cal) Street
FZ750N 1985 750 FZ750 Street
FZ750S 1986 750 FZ750 Street
FZ750SC 1986 750 FZ750 (Cal) Street
FZ750T 1987 750 FZ750 Street
FZ750U 1988 750 FZ750 Street
FZ750UC 1988 750 FZ750 (Cal) Street
FZR1000T 1987 1000 FZR1000 Street
FZR1000TC 1987 1000 FZR1000 (Cal) Street
FZR1000U 1988 1000 FZR1000 Street
FZR1000UC 1988 1000 FZR1000 (Cal) Street
FZR750RT 1987 750 FZR750R Street
FZR750RU 1988 750 FZR750R Street
FZX700S 1986 700 FZX700 FAZER Street
FZX700SC 1986 700 FZX700 FAZER (Cal) Street
FZX700T 1987 700 FZX700 FAZER Street
FZX700TC 1987 700 FZX700 FAZER (Cal) Street
FZX750S 1986 750 FZX750 FAZER Street
FZX750T 1987 750 FZX750 FAZER Street
XJ700XN 1985 700 XJ700 MAXIM X Street
XJ700XNC 1985 700 XJ700 MAXIM X (Cal) Street
XJ700XS 1986 700 XJ700 MAXIM X Street
XJ700XSC 1986 700 XJ700 MAXIM X (Cal) Street
XJ750XS 1986 750 XJ750X MAXIM Street

I wouldn't use anything not compatible because you will potentially have a shim that doesn't seat on the valve correctly.

Unfortunately doing a shim swap does take some time. You will have to measure all of the clearances, pull the cams and find out what shim is on the ones that are out of spec, and calculate the appropriate shim to get you the correct clearance needed. Swap your existing shims around to help minimize the new ones you need, then visit a reputable shop in your area to help you get the remaining ones you do need. Not the cheapest solution, but will help if you need to get back on the road quickly.

With that said, this kit shows to be compatible with the 1987 and 1988 fzr1000 models that is included in the above list:
https://www.denniskirk.com/hot-cams/valve-shim-kit-hcshim01.p148751.prd/148751.sku

You could purchase at your own risk and see if they will work on the X model you have.

Tony

 

I would first like to thank you all for responding and providing me with some valued and detailed information.

I run my own shop and have many customers that bring to me an assortment of bikes to repair.

I primarily work on Yamaha V Maxes and Ventures and currently own 7 V Maxes and 1 Venture. I provide engine tuning, rebuild motors, transmissions, carbs, starters, forks anything you can imagine.

With that said I have worked on a couple of Maxim X’s in the last little wile and now own an 86 750X that I’m going to do a complete frame up restoration on. I plan on expanding my services to include tune-ups on the smaller Yamaha's.

I already have an extensive collection of 25 and 29mm shims if anyone needs those sizes. The idea of a shim pool is great for the guy tuning his own ride, but for someone like myself I will need to have a good selection of shims on hand. I plan on buying on flea bag or wherever I can purchase them in order to establish my own shim kit.

This forum is a great place to exchange information and my hat is off to everyone (not just to those that replied)

Thank you all

Toolman (a proud new owner of a 1986 Maxim X)

 

I've owned a 1985 Maxim-x , it was a great bike, it pulled hard and the engine ran very, very smooth once properly tuned up.

 

We do have a few members who run shim pools.... There are shim pools in NY, CT, Ontario, and a few others. Some specialize in the Maxim X shims, others in the airhead shims. We also already have our supplier that has any size that is needed.

I have never seen MaximX shims that have differing inside diameters... Heck, for that matter I've never seen any that have differing outside dimensions, either-----

My pool is primarily for the airheads, which are all 29mm shims, but I do have a small pool of X shims, as well as a fairly extensive pool of the 25mm shims for people who may have the Venture/and other make/models that take that diameter shim.

 

if you need any shims let me know what size 's you're low on. The only charge is shipping and they are yours FREE for the pool. I also have the tool for the 29mm shims if anyone needs to BORROW that.

Toolman

 

Private message sent---

Whew.... That poor vmax in your avatar--- looks like it overheated.... LOL

 

just a little heat from reentry

 

yes sir that was one HOT bike

Toolman

 

if anyone has 7 mm shims for a 1986 Maxim X I have extra 25 and 29mm shims you might need.
lets make a deal.


Thanks
Toolman