My FZ currently runs a 4-1 and has a god awful flat spot bewteen 3.5 - 4.5 rpm. Being an originality freak I have been hunting high and low for an OEM system and finally found one the other day on the Bay. It needs repainting but I now have all the mounting buts except those original funky header bolts but still looking. I am so looking forward to riding the beast in it's original state. Stay tuned!
This is an old post, but thought I would respond, the stock 4-1-2 system on my 1FN '85, is smokin' loud, it has more snap and snarl than my overhauled overbored 2000 R1, with a full Akarpovic Titanium straight through exhaust!
The stock exhaust may not be so fancy looking and likely heavier, but IMHO there is certainly no issue with noise or the power - I highly doubt that an aftermarket "tuned" exhaust would give any extra power than the OEM one.
vtr: Hi from cape town; new at forum's not at bike building; the insanity is contagious. Recently acquired a "1FU" FZ750 with dropped valves and decided cool to rebuild as a 911conversion sleeper, what we do to ourselves...
Oct 28, 2018 18:19:43 GMT
Bill Inger: Hi Horse, I know this is a number of years ago when you was looking at a cable conversation, did you get it sorted. and could you help me with my race bike that I uses in the superstock at the CRMC. Cheers Bill
Jan 13, 2019 9:42:57 GMT
grahamfirestorm: Hi everyone my name is graham,from wakefield w.yorks,just acquired a restored 1991 fz750.
Jun 23, 2019 19:52:52 GMT
grahamfirestorm: Can anyone tell me why my bike doesn't seem to light up after 7000rpm like all the research I did before buying it.She has the standard 4 into 1 exhaust,carbs rebuilt with new jets,seals,floats,2 new diaphragms,all valve clearances checked and adjusted?
Jun 23, 2019 20:00:50 GMT
grahamfirestorm: She revs round to 10000rpm ok,but there is no urgency with it,my 1987 Kawasaki gpx750 was a lot quicker,and that was supposed to be 10-15 bhp down,ive been told the standard silencer and air filter are to blame but I don't believe that.
Jun 23, 2019 20:10:33 GMT
grpollard: After a header pipe ring nut (for starters). After 15 plus years trying to get my fz back on the road
Oct 6, 2019 9:52:13 GMT
2manyprojects: Hi all, just aqquired 2 FZ's (only one for me, one for nephew). Have a stable full of bikes, I do have a problem, some say its madness! Am based in North Devon, yes where its always raining! Lol😂
Oct 14, 2019 17:14:31 GMT
Graham : grahamfirestorm. Do you have standard size main jets fitted to your carbs? I would be tempted to go up a size or even two to see if it helps the bike pull stronger at high revs.
Oct 15, 2019 18:57:05 GMT
hybridfreak63: Hi could anyone give me more information about fitting R1 4xv forks to my FZ ...... much appreciated
Jan 18, 2021 10:17:37 GMT