Search found 198 matches
- Mon May 20, 2024 6:24 am
- Forum: Custom Projects/Restoration
- Topic: RZ350 Super Motard
- Replies: 1310
- Views: 376409
Re: RZ350 Super Motard
Will be cool to do a flow test, which should also test the tank vent. remember : the 7cc's is for fully developped race engines. so you do not need to hit the 7cc mark. using the Aprilia RSA125 as an example : 54HP. let's say you get 100HP, that would be 50 per floatbowl. 7/54*50 = +/- 6.5cc . if y...
- Sun May 19, 2024 4:45 am
- Forum: Custom Projects/Restoration
- Topic: RZ350 Super Motard
- Replies: 1310
- Views: 376409
Re: RZ350 Super Motard
also important : if the fuel level drop's, the mixture get's leaner, and who want's that ?
- Sat May 18, 2024 7:11 am
- Forum: Custom Projects/Restoration
- Topic: RZ350 Super Motard
- Replies: 1310
- Views: 376409
Re: RZ350 Super Motard
using bigger bowls will only mean you run out of fuel a bit later, but you can still run out of fuel. better is to improve fuel flow so you can not run out of fuel. Frits Overmars says a race engine needs about 7cc's of fuel per HP per minute, so take of the bowl and let the floater hang so the need...
- Thu May 16, 2024 5:43 am
- Forum: Custom Projects/Restoration
- Topic: RZ350 Super Motard
- Replies: 1310
- Views: 376409
Re: RZ350 Super Motard
why would you need bigger bowls ?
- Thu Jan 11, 2024 6:35 pm
- Forum: Chassis, Brakes & Suspension
- Topic: AL Swingarm
- Replies: 13
- Views: 1781
Re: AL Swingarm
aha, so that's why all modern race bikes use steel swing-arms.
oh no, wait ... it's the other way round ?
- Mon Dec 25, 2023 11:42 am
- Forum: Engines
- Topic: Janbros' 2-stroke excel for ports, heads and pipes
- Replies: 16
- Views: 7830
Re: Janbros' 2-stroke excel for ports, heads and pipes
small Chistmas present update in the first post
- Wed Nov 08, 2023 5:26 pm
- Forum: Engines
- Topic: +4mm crank gains
- Replies: 30
- Views: 2445
- Tue Nov 07, 2023 6:02 pm
- Forum: Engines
- Topic: +4mm crank gains
- Replies: 30
- Views: 2445
- Mon Oct 16, 2023 3:49 am
- Forum: Engines
- Topic: Motor Doesn't Rev-Up
- Replies: 10
- Views: 959
Re: Motor Doesn't Rev-Up
yes. play with the eedle to see if you ccan improve it. mains is only for full throttle.
- Tue Oct 10, 2023 4:55 pm
- Forum: Engines
- Topic: Motor Doesn't Rev-Up
- Replies: 10
- Views: 959
Re: Motor Doesn't Rev-Up
a full rebuild of the engine means it's not the same engine anymore and it may need the carb's to be set-up differently.
- Wed Jun 28, 2023 5:43 am
- Forum: Engines
- Topic: Pretty sure I have a bad crank seal...
- Replies: 36
- Views: 2768
Re: Pretty sure I have a bad crank seal...
You're actually leaning out your air-fuel mixture when you put in too much oil. That probably won't matter much if you're running rich anyway, but if you're right on the edge of running lean it could. Your plugs will foul more quickly, too, with twice as much oil as the bike needs. Stick your finge...
- Tue Jun 27, 2023 5:29 pm
- Forum: Engines
- Topic: Pretty sure I have a bad crank seal...
- Replies: 36
- Views: 2768
- Sat Apr 29, 2023 8:39 pm
- Forum: Engines
- Topic: Piston meltdown... again
- Replies: 23
- Views: 1535
Re: Piston meltdown... again
So So many if not most RZs here and other venues have died here over the years when guys start adding programmable ignitions and or advanced timing with compression increases.... you want the burn-time to be as short as possible. original ignition is not going to help you doing that. so if you've s...
- Sun Feb 05, 2023 7:39 am
- Forum: Engines
- Topic: Stock exhaust performance
- Replies: 38
- Views: 4391
Re: Stock exhaust performance
don't believe everything that is on the internet...
if that was true, we wouldn't need any sort of engine cooling, just pick the right spark plug. run your RD without water and use a BR1ES, it will draw another 700° C of heat from the combustion chamber
if that was true, we wouldn't need any sort of engine cooling, just pick the right spark plug. run your RD without water and use a BR1ES, it will draw another 700° C of heat from the combustion chamber
- Sat Feb 04, 2023 7:39 am
- Forum: Engines
- Topic: Stock exhaust performance
- Replies: 38
- Views: 4391
Re: Stock exhaust performance
I tried switching from BR9ES spark plugs on both cylinders to BR9ES on LH and BR8ES on RH cylinder, expecting to see a diference. But there was absolutly no difference in the EGT :smt021 why would you expect to see a difference ? a spark is a spark. if you had measured the temp of the spark plugs t...