Rx6 Vs Gt35/40
06-06-2003, 12:44 PM
#72
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Join Date: Oct 2001
Location: Clifton, NJ
Posts: 1,675
Yes it will. Also, why on earth would you be in 3rd gear at 2k rpm? If you want to accelerate, you downshift. Stock twins are nice for mildly modified cars, but once you start pushing high boost numbers, they quickly fall out of their efficency range. Mazda chose the smallest turbos that would make power at 10 psi with the best possible spool up. Go a few psi beyond that and they start generating heat. Has anyone even had a set last long running 15 psi consistantly? Also, once you start running more boost on the sequentials, you get a big spike in the powerband. This is not only dangerous, but makes the car harder to drive on the track. Hit the turbo switchover point mid-turn and it could send you off the track. What it all comes down to is what you want to do with the car and personal preferance.
06-06-2003, 02:27 PM
#73
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Join Date: Jan 2002
Location: CT
Posts: 1,345
Originally Posted by Silver Ninety Three' date='Jun 6 2003, 12:44 PM
Yes it will. Also, why on earth would you be in 3rd gear at 2k rpm? If you want to accelerate, you downshift. Stock twins are nice for mildly modified cars, but once you start pushing high boost numbers, they quickly fall out of their efficency range. Mazda chose the smallest turbos that would make power at 10 psi with the best possible spool up. Go a few psi beyond that and they start generating heat. Has anyone even had a set last long running 15 psi consistantly? Also, once you start running more boost on the sequentials, you get a big spike in the powerband. This is not only dangerous, but makes the car harder to drive on the track. Hit the turbo switchover point mid-turn and it could send you off the track. What it all comes down to is what you want to do with the car and personal preferance.
with a single turbo there is NOthing down there, u ALWAYS have to downshit, its kidna a pain.
yes that is true that twins dont liek high boost and high power, but the spike is not gonan kill u
unless u are WOT in mid corner and who does that?
they made the sequential setup to have a linear power band and power everywhere not just passed 4k rpm.
06-06-2003, 02:41 PM
#75
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Join Date: Jan 2003
Location: London, Ontario
Posts: 2,871
I think the point is that the sequential turbos do not have a linear power band. Here's 3 guys boosting 15 lbs. Dyno Comparison
On a track you drive out of the corner under power. While a laggy turbo that comes on hard all at once will cause a problem, so will one that jumps around like the stockers on that graph.
Low end power is hard to compare on dyno charts. If the guy driving the car starts from different RPM for different cars the low end won't be comparable. If they ALWAYS got on the throttle hard at 2000 RPM it might help.
On a track you drive out of the corner under power. While a laggy turbo that comes on hard all at once will cause a problem, so will one that jumps around like the stockers on that graph.
Low end power is hard to compare on dyno charts. If the guy driving the car starts from different RPM for different cars the low end won't be comparable. If they ALWAYS got on the throttle hard at 2000 RPM it might help.
06-12-2003, 01:50 AM
#77
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Join Date: Jan 2002
Location: CT
Posts: 1,345
Originally Posted by TYSON' date='Jun 6 2003, 02:41 PM
I think the point is that the sequential turbos do not have a linear power band. Here's 3 guys boosting 15 lbs. Dyno Comparison
On a track you drive out of the corner under power. While a laggy turbo that comes on hard all at once will cause a problem, so will one that jumps around like the stockers on that graph.
Low end power is hard to compare on dyno charts. If the guy driving the car starts from different RPM for different cars the low end won't be comparable. If they ALWAYS got on the throttle hard at 2000 RPM it might help.
On a track you drive out of the corner under power. While a laggy turbo that comes on hard all at once will cause a problem, so will one that jumps around like the stockers on that graph.
Low end power is hard to compare on dyno charts. If the guy driving the car starts from different RPM for different cars the low end won't be comparable. If they ALWAYS got on the throttle hard at 2000 RPM it might help.
gotta go back to teh drawign board...
stock sequentilal system should be of no problem on teh track unless
u donno how to drive, part throttle doesnt affect the transition, and if u are full thrtolle in mid corner u are not doing somethign right.
06-21-2003, 01:20 PM
#80
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Join Date: Feb 2003
Location: NewHampshire
Posts: 100
Originally Posted by kahren' date='Jun 11 2003, 10:50 PM
[quote name='TYSON' date='Jun 6 2003, 02:41 PM'] I think the point is that the sequential turbos do not have a linear power band. Here's 3 guys boosting 15 lbs. Dyno Comparison
On a track you drive out of the corner under power. While a laggy turbo that comes on hard all at once will cause a problem, so will one that jumps around like the stockers on that graph.
Low end power is hard to compare on dyno charts. If the guy driving the car starts from different RPM for different cars the low end won't be comparable. If they ALWAYS got on the throttle hard at 2000 RPM it might help.
On a track you drive out of the corner under power. While a laggy turbo that comes on hard all at once will cause a problem, so will one that jumps around like the stockers on that graph.
Low end power is hard to compare on dyno charts. If the guy driving the car starts from different RPM for different cars the low end won't be comparable. If they ALWAYS got on the throttle hard at 2000 RPM it might help.
gotta go back to teh drawign board...
stock sequentilal system should be of no problem on teh track unless
u donno how to drive, part throttle doesnt affect the transition, and if u are full thrtolle in mid corner u are not doing somethign right. [/quote]
Wow, you really love those twins. You might want to look at the other Forum and count how many posts pertain to boost problems. Probably more than any other issue. You might want to ride in some cars with single turbos. The stock twins have no many issues i cant even decide where to start. other than control issues which are a huge problem, The turbos themselves make so much heat at other than stock boost levels they are engine killers. Also dont forget how nice they crack. Most sets i have seen. Even low mile examples all cracked up. As far as driving goes, when most people race they keep the rpms up and the power is linier at higher rpms. If your still driving around a race track at 2k rpms. ( I still cant understand this argument) then you might have some kind of issue.