BannedCR500Riders.com

That is real info..... The bike will tell you when its had enough timing... Its like jetting..... what works on someone elses bike may not work on yours. You cant just pick some nujmber out of thin air. Clydes bike might want 28 degrees, yours might want 33 degrees.... The bike will tell you. Ok, i...

AlisoBob wrote:

johnnytheswede wrote:The question is how much is safe with 95 octane fuel?

Johnny

Until it starts rattling bad, at 3/4 throttle, in 3rd gear....

Yeah, sure;=)! Great info;=)! I know you are a man that knows a lot about these bikes so come up with the REAL info!

Johnny

What is the standard setting in degrees on a -99 model?

100hp honda wrote:take the tab off the bottom bolt and turn it counterclockwise.

Ok, but shouldn,t i file the hole and put it back on? The question is how much is safe with 95 octane fuel?

Johnny

i really dont think it will make a difference for you judging by what you did to your engine. most of your hardcore race engines will have the ignitions fine tuned or even make new maps but they use a dyno to see if their headed in the right direction. Hello! Yes, of course the best way is to dyno ...

Kuma wrote:

johnnytheswede wrote: but 98 is also available here in Sweden at the stations.

Johnny

I can't help you on your question, but that's nice having 98 octane, that is what I'd be running.

We also have Shell V-power. It,s 99 octane=).

Johnny

Hi everyone! So, how much is there to win powerwise by adjusting the standard ignition? I have a ported jug, coolhead 66cc. How much can i safely advance or retard the ignition to get more top end power without sacrifice reliability? Is there anything else that needs to be changed to be safe? We usu...

Punching the mating surface, that,s the word! I,ll try that with my new date this evening=)!

Johnny

Ok, so i should start with à 188 as a guideline then. Maybe it, à but lean on top with à 182 then at 45f. I try that and get back! Thanks!

gregrobo wrote:a centre punch

=)! Thanks! Now i learned something again=)!

Ok, i just put my engine together after the portjob and rebore and made the first run-in yesterday, and today i finished it. The bike feels really good, and can,t say i notice any worse bottom end power than before the portjob! It feels very "light" and revs clean and easy when i twist the...

My friend who rode the 500 World championship in the 90;s did a "gasket thing" on my cases. He took a " metalspike"(i don,t know the name) and made three hits with a small hammer on the cases where the gasket area is smallest. This makes the gasket grip in the "dimples"...

Ok, so what,s the problem with part throttle? Is it just the whole layout of the carb? I was thinking of one for the 500, but maybe it,s not a good idea for roaduse?

Johnny

I weighted the standard piston at 89,25mm and i got 428 grams. The new Wiseco 871 at 89,50 mm was 420 grams. But the pin was a little heavier on the Wiseco, 60 grams, and the standard 40 grams, so 8 grams in difference.

Johnny

Hi guys! I have been recommended by a tuner here in Sweden to swap my PWK 41,5mm for a lectron 44mm. My bike has just been ported 3,5mm exh. 1,5mm trans, ported intake, coolhead, Power reeds, ProCircuit system. Does anyone have any exdperience of comparing those carbs? What,s the difference/improvem...

I have messed a lot with the carb and jetting so that,s no problem=). Thanks anyway! I just wondered how much you think the porting will affect the jetting. I have put in the Power reeds too, so i guess i have to start quite fat with the new portjob and piston and run it in, and then i do the regula...

Ok, thanks! I just finished the porting and i tried to flatten the floor a bit so i think it,s a little more flat than standard. I also decided to take another 0,5mm on the exhaust port. I think this will match better with the transfers which i raised 1,5mm. I have just put the engine together, but ...

Ok, great! That was good information as i thought i had to cut the angle deeper in to the port=)! I think i have done it quite well then, because i took quite a lot of material off in that area. At least i think it,,s close to standard which is ok with the tools i have;=)! What angle have you taken ...

yes, i use a 90 degree angle grinder and do the work with different stones, but it, a real PITA to get through everywhere, and to measure the roff angle in the transfers is no easy task, but i think it will be close to standard at least. It takes time, but who needs to hurry;=).

Johnny

100hp honda wrote:did you use the epoxy in rear ports like eric said ?

No, i actually just about to finish the porting on the transfers, and as i,m no pro at this i do the regular port raise and try to get the angle slightly better for top end power=). I think that would be good enough for me.

Johnny

Ok, i just measured my two different gaskets, and the factory gasket is 0,5mm thick. The other one is 0.45mm thick, so maybe i could run with two gaskets if i don,t want to port it more than i already have. I also have a 63cc dome for my Coolhead if i want to increase the comp. I guess a slightly lo...

this was first day i put the engine back together just testing it. you can hear it dont like 5th gear very well in the sand. cpi with porting i did just dont do well at lower rpm. keep it spinning to the nuts and your good :lol: . thats why i mentioned to you the tranny swap. dont have to deal with...

Roostius_Maximus wrote:so your exhaust port timing is likely 184.4 to 185.1 depending on base gasket
stock cylinder is around 178

i'll check my book tonight and get back to you if i'm doing this wrong

Ok, great! Which gasket is thickest? I have an oem and an aftermarket but i haven,t measured them.

Johnny

[quote="Roostius_Maximus"]what is your port height? can u measure it from the top of the cylinder down til the port opens?[/quote

Yes, it,s 43,5 millimeters!

100hp honda wrote:ok been long time since i seen stock jug. i could be wrong. numbers sounded odd but maybe not

Ok, you have a more radical portjob than me for sure=). How do you use your bike, and what poweroutput do you have? Do you run the CPI pipe now?

Johnny