FZRSupport: the FZROnline Archive

Hi all. Just about to go investigating and wondered if anyone can give me some pointers before I start. I have a 91 FZR 600 3HE which someone has put a 4TV motor in. The bike has seen some abuse at the hands of it's 8 previous owners. After doing the VR upgrade to a 5 pin Thundercat one last Wednesd...

Hi guys, the new R/R arrived today :grinnod: Checked battery voltage first 'cuz it's been stood since Sunday when I charged it up - 12.2v. Fitted new R/R and ran the earth down to an engine casing bolt. Fired it all up and the first thing I noticed was no sulphur smell and no bubbling sounds like be...

I have the same problem. I believe it's common.
Here's an article on it viewtopic.php?f=8&t=206

When you've completed the VR upgrade if your battery still goes flat, you probably have shorting plates in at least one cell 17.3v @ 3k (the voltage will increase @ higher RPM's) will boil the battery dry, the plates can buckle and short out, if so that battery will need replacing. I would NOT ride...

Hi all, just joined and I've been having the same problem. I have a 91 FZR 600 and it looks like a previous owner has changed the engine for possibly a YZF 600 Thundercat engine with a 4TV number on it. I've worked through the VR flowchart and I'm getting between 14.5v and 17.3v at around 3k which w...