FZRSupport: the FZROnline Archive

Check voltage coming from stator on the battery. Should be around 14V. If not, check actually voltage directly from stator measuring across each pole (AC system). If ok, the you're regulator or rectifier may be bad. If it's the original one I'd just replace it. People commonly go to a newer R6 full ...

Do the carb joints line up the same? I would assume so as they are still the same 1wg motor if I am correct.

So I recently bought a transmission off eBay that was $25(on sale) used for spare parts just in case. But I came across an airbox today which I've been told to get many times on here for better tuning since I only have pod filters. It says it's for an FZR400r so I'm not sure if it will fit my 1989 F...

I do get some blue smoke now already when taking off but I not sure if that's because I have a slip-on exhaust that probably needs to be repacked but I have yet to do so.

When i ripped it apart last time, the rings weren't perfect but they looked good enough to me. I will try the compression test variations when I pull the bike out soon to do the fork seals and such maintenance. When i had it apart i did lap all the valve seats so they should have been pretty good. I...

I don't know if it needs pistons to be honest, some people say to not reuse pistons some say it's okay, I have no clue. Yes initially I did a wet test and it was about 90psi I think in all cylinders. If the jugs are still clean could I not either reuse them and get the cylinder deglazed if necessary...

Well on Partzilla I have seen STD size pistons become available about once in the 3 years which i should have scooped them up at the time. This site says there are some available apparently: https://www.motosport.com/oem-parts/part-number/1WG-11631-01-00?mmysource=yamaha%3Bfzr400-%28ca%29%3B1989&par...

Hi all, When i bought my 1989 FZR400 1wg a few years back I did a valve job, complete gasket change, and other misc fixes and restorations but never rebuilt it (pistons and rings). Once i put the engine back together and everything and did a comp test i was only getting around 90psi in each cylinder...

There are those eBay kits always online but I've never heard anything about them and reviews lol You can also just buy general coolant hoses and fit them they won't be bent at all in the positions but over time will wear into the shape they are now. I'd also recommend new better clamps like they giv...

Usually the carb boots should have some small little ridges that sit down onto a certain spot so they cannot spin. depending on which side they are on should reflect the what way they sit. R and L mean right and left side which so you should have 2 R sides facing out and 2 L sides facing out

Only on a single sounds very odd I have no clue at all. Hopefully someone else has a clue on here

Wait I may have those kind of things on my 1WG carbs. In between carbs in the fuel rails there are 2 pipes sticking upwards that if the carbs are flipped upside down fuel comes outside. Now my guess where mine go are to the what was air box. I have pods so previous owner just snipped the hoses and p...

Does the carb have a model version on it? Also check sites like partzilla for an exploded diagram and see if you can find out what it is. My 1WG carbs don't have this

I have been riding quite a bit this year and have moved the gear shifter down and it has not changed but has reduced them slightly. I still miss shifts here and there because i can feel the 2 stages of the dog gears moving from one to the other (feels like 2 entire clicks in one shift) so something ...

It could be but it has gotten pretty steady at some points, I'll get a video of it once this rainy weather goes away. And for oil filler you mean on the clutch side the actual fill hole and then the rad fill you mean just mean right at the front below the tank cover? And nope it hasn't seized that I...