Safe RPM for TII engine???
12-13-10, 06:19 PM
#1
Exhaust Leak Fixed
Thread Starter
iTrader: (1)
Join Date: Sep 2008
Location: Tulsa, Oklahoma
Posts: 160
Likes: 0
Received 0 Likes
on
0 Posts
Safe RPM for TII engine???
Ok so i have an S5 Vert with a Turbo swap. im still using the NA tach which has a higher redline than what the turbo tach. should i stay with the 7K redline or is it safe to hit 8K
12-14-10, 08:41 AM
#5
Just gonna ask if you really thought that because the tach changed the engine condition would have changed to allow it to hit 8k? (not being a dick, more of a smartass)
As posted by RotaryRocket88 the redline stays the same for the engine. You'll probably be able to rev it to 8k, but there's less power than at 7k. So until you replace the turbo with something that can breathe at that rpm, 7 is your magic number!
As posted by RotaryRocket88 the redline stays the same for the engine. You'll probably be able to rev it to 8k, but there's less power than at 7k. So until you replace the turbo with something that can breathe at that rpm, 7 is your magic number!
12-14-10, 09:34 AM
#6
Exhaust Leak Fixed
Thread Starter
iTrader: (1)
Join Date: Sep 2008
Location: Tulsa, Oklahoma
Posts: 160
Likes: 0
Received 0 Likes
on
0 Posts
Just gonna ask if you really thought that because the tach changed the engine condition would have changed to allow it to hit 8k? (not being a dick, more of a smartass)
As posted by RotaryRocket88 the redline stays the same for the engine. You'll probably be able to rev it to 8k, but there's less power than at 7k. So until you replace the turbo with something that can breathe at that rpm, 7 is your magic number!
As posted by RotaryRocket88 the redline stays the same for the engine. You'll probably be able to rev it to 8k, but there's less power than at 7k. So until you replace the turbo with something that can breathe at that rpm, 7 is your magic number!
Trending Topics
12-14-10, 11:49 AM
#8
I have the rev limit set to 8500 on my s4 T2 in part because for 1st and 2nd gear it's hard to keep it off the rev limiter. In 3rd and 4th I take it up to around 7500 usually. I haven't dyno'd this engine yet but the last one had a powerband that flattened at 7000 and fell off at about 7500.
stock ports and stock/hybrid turbo is out of breath by 6500 usually and there's no point in shifting after 7000
While continual redlining certainly doesn't help longevity, the cool thing about a rotary as it won't fly to pieces from high revving. you don't have head lift, valve spring problems, etc. The engine will just stop making power. So even if you can take it over 8000rpm turbo engines almost never make power that high without a big turbo and aggressive porting.
stock ports and stock/hybrid turbo is out of breath by 6500 usually and there's no point in shifting after 7000
While continual redlining certainly doesn't help longevity, the cool thing about a rotary as it won't fly to pieces from high revving. you don't have head lift, valve spring problems, etc. The engine will just stop making power. So even if you can take it over 8000rpm turbo engines almost never make power that high without a big turbo and aggressive porting.
12-14-10, 10:47 PM
#10
The thing I wondered is the with the S5 Tii they listed the redline as 7k and the n/a as 8k given the same rotor weight, but the flywheels are lighter. The FD with the same rotor weights and turbo have a 8k redline with a sustained of 7.5 of under, the only real difference I see is the FD vs s5 tii has a slightly lighter flywheel. The only thought that popped in my head was that they were worried about high rpm vibration with the heavy flywheels.
Thread
Thread Starter
Forum
Replies
Last Post
stickmantijuana
Engine Management Forum
11
11-09-15 01:15 PM
Megasquirt timing map and EGt ?? what do you guys think
immanuel__7
Megasquirt Forum
3
08-22-15 09:34 PM
KAL797
Test Area 51
0
08-11-15 03:47 PM
