GP1800/SVHO Head Cracks

[PVL-747]

Hi Luke,

looks like ive got the same issue as you, man im not looking forward to tackling this with Yamaha. Mine is 2017 Yamaha FX SVHO with 71hrs.

Where did you buy the extra cylinder heads from mate? How did the SHO cylinder head fit up? Simple bolt up?

[scittb]

I would send ur old svho head to jim.

Jim will NOT repair cracked heads.

[mittens]

Mine is 2017 Yamaha FX SVHO with 71hrs.

This sucks at any point but that's low hours for it I would think

[Hurricane1000]

SHO head bolts right up.....

I did it on my GP1800.

[mittens]

SHO head bolts right up.....

I did it on my GP1800.

sod you swap over any parts or just strait whole head springs & all

[dijsil]

mind you my 09 sho was all stock with just ribbon delete and still ended up with a cracked head at 200hrs on the exhaust side

[Luke1.8]

Sorry to hear mate, Its a shit thing that some of us 1.8l guys have to go through.
SHO, HO.. all these heads will work with yours, you can just transfer it all across into the new head your get, Im currently using a 2014 HO head from memory on the now Turbo set up.
Only real mod you have to do for the HO heads is to open up the bolt hole for stock IC bracket. They all come out of the same mould, they just don't need to drill it for the HO as there isn't a need for the bracket. If you go a turbo setup you wont need to drill it. haha

[Stef01885]

Does this apply to the 2016 SVHO FZS 1.8l heads too? I'm looking at getting my fzs reflashed (stage 1 8300) but can't be bothered with having reliability issues. Or is it a bit of a lottery, regardless of reflash?

[mittens]

From the way I understand it stock, flashed, what ever it just happens or don't. casting issue

[TurboX]

I cracked my head in Dec and know another guy who cracked his in Jan, we were riding in cold air with water temps right at 50 degrees. We both have the upgraded cooling systems where water goes in thru where anode fitting is. Is it possible the cold water entering into a hot motor being run hard is contributing the cracked heads ?

Thanks