Stock engine with ???km on it but running pretty well in the same dyno 85hp at the wheel, this one pushed just under 126. I took a late model FZR 1000 with Wiseco 1040 kit there too and it was 130+ not by much. 132 I think, cant remember exactly.
To answer the original question about losing midrange... I have no idea of the midrange with FZ cams in a 911 but this particular engine is much stronger than stock FZ from idle to limiter. It really wakes up at around 5500-6000rpm but is fully rideable even at 3000rpm. Compression ratio is around 12,2:1 so this is still very much a streetable engine. No use raising the CR as we can't use a slipper clutch and with the current setup the rider is still comfortable with the increased engine braking. A good combo using nothing but stock parts.
Keep in mind we are using FCR39's and still the torque curve is very nice.
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