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Posted: Tue Mar 11, 2008 11:14 pm
by wistech
3hp and 2 pounds of torque gained on this 460 with an hour on the dyno. The best 60 bucks you will ever spend. Engine was witech ported .cam timing at 107 107 . 13.25 to one compresion FMF open system.46mm throttle body,cyclone intake ,stock injectors. 110 renegade pump fuel. mc1000 ecu.
Posted: Tue Mar 11, 2008 11:31 pm
by peterock
Looks like this one needs a little engine that could story modification.
Posted: Tue Mar 11, 2008 11:52 pm
by wistech
Porting was from a year ago . It was a fresh engine that had not been broken in yet so it still had the dinosaur oil in it. She also didn't get the thunder duals.
Posted: Wed Mar 12, 2008 3:36 am
by wistech
Here is a dyno chart of of the difference the high lift cams made on the 460. The stock cams had more torque below 7000 and also peaked earlier. The result of the high lift was the same torque number but 1000rpm later and there was a top end hit of 3 hp more.
Both engines had were identical with an open fmf system the only difference was one had stock cams the other the high lift exhaust.
Posted: Thu Mar 13, 2008 5:10 am
by timbomoose
Nice job! Definately a Jap bike thrasher!
Posted: Thu Jun 12, 2008 2:10 am
by wistech
Here are 4 460's I found in the files. Tims 54 hp had a more in the mid but less on top. The rest are mine from the past few years. Maybe someday someone else will get into the 50's with these easy to build budget engines. Get off your rumps......
Posted: Tue Jun 17, 2008 12:25 am
by 67z400
I would love to get mine dynoed and tuned in. I have a 460 piston, mild port n polish job, full fmf ti exhaust, and k and n airfilter. So far I've been pretty impressed with it. Traction is my biggest issue.
Posted: Sat Jul 12, 2008 7:20 am
by T-Rex
Porting from a year ago, I was unaware that your porting had a shelf life Wistech!!!
I was looking at your chart and boy is it all over the place but you still got the good numbers.
Posted: Mon Jul 14, 2008 2:26 am
by wistech
Porting from a year ago, I was unaware that your porting had a shelf life Wistech!!!
I was looking at your chart and boy is it all over the place but you still got the good numbers.
As porting improves every year the older the porting the less the output.
As you can see only 2 engines were near each other because they were built almost the same. The cams ,cam timing and exhaust were all different so the results were very different.
Posted: Wed Jul 16, 2008 10:12 pm
by T-Rex
As porting improves every year the older the porting the less the output. Quote!
So the older you get the more power the engine produces... I see the light now!!!!
So what happened to you are suppose to know what you are doing from the beginning!!!