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-   -   low end torque (https://www.rx8club.com/series-i-specific-performance-mods-97/low-end-torque-146709/)

hervey May 23, 2008 12:50 AM

low end torque
 
i have a 2005 rx8 a/t...ive only had it a few months and i am very impressed with the torque when it gets around 4,000rpm.
but on the flip side...i am very disappointed with the lower end. even if i shift(with the manual overdrive) at 7,500rpm the next gear picks up at a low and slow 2,500rpm. is there any way to change this?

BlueKnight May 23, 2008 01:28 PM

You can modify the shifting patterns, etc. with a device such as Access Port or Interceptor-X. There is lots of information about these products all over the forum. Try a search. ;-)

xsnipersgox May 23, 2008 01:30 PM

sell ur auto..

mdw1000 May 23, 2008 06:50 PM

Or you can do the lower rear gear to help pickup down low a bit.

09Factor May 27, 2008 09:29 PM

Rotaries were never known for low end Tq.
Now add a Snail or a properly designed and matched Sc, then you will see the low end Tq.

Phil's 8 May 28, 2008 06:36 AM


Originally Posted by xsnipersgox (Post 2477424)
sell ur auto..

First thought was to ask what in hell your doing in the A/T section with your negative attitude then looking close I determined that you might be Military and that in my book gives you lots of latitude. Please note that the A/T is an option that some prefer and can be made to perform very nicely.


Originally Posted by 09Factor (Post 2482918)
Rotaries were never known for low end Tq.
Now add a Snail or a properly designed and matched Sc, then you will see the low end Tq.

Dave, add properly matched Snail to your post. I have ridden in some turbo'd 8s (M/Ts) that are slower off the line than a stock A/T.

quazmosis May 28, 2008 10:48 AM

Easy Phil he's got racing beat screens on his car. Don't be going against him with your S/Cer.

Phil's 8 May 28, 2008 11:13 AM


Originally Posted by quazmosis (Post 2483565)
Easy Phil he's got racing beat screens on his car. Don't be going against him with your S/Cer.

I never "go against" anyone. Just wish to point out that having the A/T does not make you a second class enthusiast.

mazsportmantis May 28, 2008 03:50 PM

The Ignition Solution is a great way to add a little kick to your 8. It will not cause and check engine lights and will increase your horsepower. There is a thread about it under "Major Horsepower". It is an easy install and a good value when you consider $$ vs. HP gain and other alternative products.

rotarygod May 28, 2008 04:33 PM

The problem with a rotary having low torque is based solely on one thing and that is engine size. It's a small engine. It won't have lots of low end. That's physics.

There are a couple of ways to get around this. One way is with help in the form of forced induction. Either a turbo or a supercharger. For an auto I'd personally lean towards the supercharger but that's just an opinion.

The other thing that can be done is to never stay at lower rpms. I understand that the transmission shifts and send you back down there which is a problem. without being able to change the auto transmissions gear ratios, the only real way to get considerably more low end is with forced induction.

rotarygod May 28, 2008 04:34 PM


Originally Posted by xsnipersgox (Post 2477424)
sell ur auto..

Just for the record, up until last year, the autos had more torque all the way to 7500 rpm than the manual transmissions did so I don't really think he'd want to downgrade to yours.

xsnipersgox May 29, 2008 12:28 AM

lol.. fine, but still. manual ftw XD.. shift at 9k = never low rpm.

mazsportmantis May 29, 2008 08:48 AM

hey F, glad to see you are still around. did you get hitched yet?

rotarygod May 29, 2008 01:42 PM

April 25, 2009 is when my warranty runs out. ;)

mazsportmantis May 29, 2008 01:45 PM

holyshit, laides get your bills out!!

mdw1000 May 29, 2008 02:57 PM

You can put it in manual mode and it won't upshift at all until you tell it too. You can even bounce it off the rev limiter and it won't upshift.

I drive with it in manual mode most of the time, for exactly that reason. Most of my around town cruising is in 3rd gear. That way it is quicker to respond when I need it to. Generally I don't shift up to 4th unless I'm cruising above 50 mph or so.

Easy_E1 May 29, 2008 03:29 PM

Manual mode.

JTtheDude May 29, 2008 04:49 PM


Originally Posted by mdw1000 (Post 2485646)
I drive with it in manual mode most of the time, for exactly that reason. Most of my around town cruising is in 3rd gear. That way it is quicker to respond when I need it to. Generally I don't shift up to 4th unless I'm cruising above 50 mph or so.

I'm the exact same way, I try not to go to 4th until I'm over 50mph unless I'm trying to save gas which seems to be a lot lately because of gas prices. :sad: I was tired of doing the 4th to 2nd jump skipping 3rd which would give more than I need so cruising in 3rd seems to be good. Do any other people skip gears in their auto or is it just me? 4th to 2nd anyone? you can also go 3rd to 1st depending on speed.

mdw1000 May 30, 2008 11:59 AM

Yeah, I'll occasionally do a double tap.

quazmosis May 30, 2008 03:29 PM

That's what she said.

DMRH Jun 1, 2008 05:41 AM


Originally Posted by 09Factor (Post 2482918)
Rotaries were never known for low end Tq.
Now add a Snail or a properly designed and matched Sc, then you will see the low end Tq.

Re-phrase that to "The 13B-MSP engine is not known for low end torque"

Because the 20B-REW in a Cosmo pumps out almost 400NM at just over 2000rpm

As for the 13B-MSP, drop a gear or two, let it rev & enjoy the smile-on-ya-dial. I certainly do

REgards

09Factor Jun 1, 2008 12:16 PM

1 Attachment(s)

Originally Posted by DMRH (Post 2489534)
Re-phrase that to "The 13B-MSP engine is not known for low end torque"

Because the 20B-REW in a Cosmo pumps out almost 400NM at just over 2000rpm

As for the 13B-MSP, drop a gear or two, let it rev & enjoy the smile-on-ya-dial. I certainly do

REgards

Ok you got me there! :) You and your 3 rotor.....:worship:




Phil,
Here's my snail.

Phil's 8 Jun 1, 2008 07:42 PM

I like your "snail". I'd say something smart but the turbo lovers would think I was demeaning their choice of FI.

09Factor Jun 2, 2008 09:37 AM

I didn't know you could get minerals out of a turbo.

Phil's 8 Jun 2, 2008 11:08 AM


Originally Posted by 09Factor (Post 2490890)
I didn't know you could get minerals out of a turbo.

I guess you can if you can't spell.


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