ive dynoed it probably ten times,i work for a school that trains technicians for honda and yamaha. i was wondering how much more torque and power you gained by doing that engine upgrade and if it was worth it because i have been seriously considering it. and i live in southern tennessee

 

Dyno tune...hooking an a/f sniffer up to it on the dyno and tuning it to the proper a/f ratio. Not just a dyno run to find power output.

 

yea i know,we are not allowed to do it without a sniffer on it or we would get shut down by the school. i just want to know how much difference it made,not the air to fuel ratio. got mine perfect,i want to know from someone who has done major engine upgrades how much difference it made,not how much more air or gas it needs....

 

when we said that we were talking to the person who started this thread. as far as power goes it all depends on what piston cam and who does the head work.

 

<div class="FTQUOTE"><begin quote>Originally posted by: TNHondaMan

please let me know, i have a 660r that i love. ive had it for about 4 years also and have done no major engine work like that. was is worth it and would you recommend it?</end quote></div>

Yea it made a real big differrence it basically pulls up in just about every gear the rpm is way way higher. I dont know how fast it goes. Yea I would recommend it.

 

thats awesome man,thanks for the info. i dont want to do it until i need to rebuild top end or break something,but im going to. have you had any problems out of it and what type of gas do you use?

 

Well I would be lying if I told you that everything went fine I lost a head because of a bad timing chain. When you rebuild your quad make sure that you get a better timing chain for your bike if you deside to go with a bigger cam. But other than that it runs pretty good I just have to adjust a few things. Like my valves and I have to get a new seal on the side of my head it has a slight oil leak. Sometimes I run straight racing fuel but mostly half pump gas and half race fuel.

 

ive found an 01 660R for 2000 that im going to look at this weekend and want to make into a torque monster. so im price all the parts and upgrades. this quad is in excellent shape so i may be asking you a few more questions about it weatherspoon.