TRE final drive gears.
Jun 23, 2005, 10:44 AM
#31
Originally Posted by MyCre8n=Evlshn
The Evo 9 and the MR are running the six-speed. Considering I'm building an MR up, and the 9 will give a much larger market for the mod to the 6-speed being upgraded, are you guys at TRE considering a similar upgrade for the 6-speed tranny?
Jun 23, 2005, 12:15 PM
#34
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Originally Posted by Silencer
I read through the post and did not see the tire diameter used. 24, 25, 26, inch tire? This could actually affect the speed at each gear.
l8r)
Jun 23, 2005, 12:33 PM
#35
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Originally Posted by Fourdoor
One last observation.
Using the TRE gears on a bone stock EVO would let you finish the 1/4 mile in 3rd gear, and eliminating a shift would probably drop you down to a high 12 (possibly mid 12's) at 108 or 109 depending on exactly where your rev limiter kicked in. That is bone stock power wise, just the gearing change as the only modification.
Keith
Using the TRE gears on a bone stock EVO would let you finish the 1/4 mile in 3rd gear, and eliminating a shift would probably drop you down to a high 12 (possibly mid 12's) at 108 or 109 depending on exactly where your rev limiter kicked in. That is bone stock power wise, just the gearing change as the only modification.
Keith
If your well past your peak hp or bouncing off your limiter, time to look at taller tires or a lower ratio gear. Someone mentioned that 70 hp is point of looking at a new gear. Last time I checked, it takes a little more than that to get you into the mid to low 11's. The factory final gear will fit most applications.
Reducing the gap between 4th and 5th is an idea.
Jun 23, 2005, 12:50 PM
#36
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Originally Posted by GEARS
I can get the 4.11 gears if people would want them but honestly the tooth profile isn't much stronger than the stock gearing.
If you are making 450HP you will want the drag race gears.
Jon@TRE
http://www.teamrip.com/Evolution.html
If you are making 450HP you will want the drag race gears.
Jon@TRE
http://www.teamrip.com/Evolution.html
My current interests are autocross and track days. I think the 3.84 is a bit too low for autocross, but I was thinking the 4.11 would be ok. It appears that your new gearing includes different 4th and 5th gear ratios. It seems that the 4.11 with your 5th gear (which looks to be around 0.78:1) would be a good setup. The 4 to 5 shift would drop the engine from 7500 to about 5675 RPM but cruising RPM would still be slightly lower than stock for improved gas mileage. What do you think of a setup like this? This is something I've been thinking about for a while, but am still at least a year or two away from actually doing it.
-Paul
Jun 23, 2005, 01:28 PM
#37
Originally Posted by PVD04
Jon,
My current interests are autocross and track days. I think the 3.84 is a bit too low for autocross, but I was thinking the 4.11 would be ok. It appears that your new gearing includes different 4th and 5th gear ratios. It seems that the 4.11 with your 5th gear (which looks to be around 0.78:1) would be a good setup. The 4 to 5 shift would drop the engine from 7500 to about 5675 RPM but cruising RPM would still be slightly lower than stock for improved gas mileage. What do you think of a setup like this? This is something I've been thinking about for a while, but am still at least a year or two away from actually doing it.
-Paul
My current interests are autocross and track days. I think the 3.84 is a bit too low for autocross, but I was thinking the 4.11 would be ok. It appears that your new gearing includes different 4th and 5th gear ratios. It seems that the 4.11 with your 5th gear (which looks to be around 0.78:1) would be a good setup. The 4 to 5 shift would drop the engine from 7500 to about 5675 RPM but cruising RPM would still be slightly lower than stock for improved gas mileage. What do you think of a setup like this? This is something I've been thinking about for a while, but am still at least a year or two away from actually doing it.
-Paul
Jon@teamrip.com
Jun 23, 2005, 01:56 PM
#38
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Originally Posted by Silencer
Your kidding, right. While you may think you gain 1-2 mph by using just 3 gears with a 3:80 gear, you will definitely loose in ET (or should I say add time). The optimum final gear for a low to mid 11 sec. Evo (115-122 mph) is ultimately the factory 4.529 given the choices. The 5-speed gears are not that low. Your at full boost during all of the gear changes especially looking at 1st. You will be just past your peak hp at the end of the 1/4 mile, again, at a low to mid 11 sec. time. This is perfect.
If your well past your peak hp or bouncing off your limiter, time to look at taller tires or a lower ratio gear. Someone mentioned that 70 hp is point of looking at a new gear. Last time I checked, it takes a little more than that to get you into the mid to low 11's. The factory final gear will fit most applications.
Reducing the gap between 4th and 5th is an idea.
If your well past your peak hp or bouncing off your limiter, time to look at taller tires or a lower ratio gear. Someone mentioned that 70 hp is point of looking at a new gear. Last time I checked, it takes a little more than that to get you into the mid to low 11's. The factory final gear will fit most applications.
Reducing the gap between 4th and 5th is an idea.
l8r)
Jun 23, 2005, 02:05 PM
#39
Originally Posted by GEARS
Jun 23, 2005, 02:08 PM
#40
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This is a very interesting topic to me because the gears do seem to just fly by way to fast. Is it possible to just replace the final drive with the 3.8 or do you have to redo 4-5th too? I do plan to have over 400WHP so would the 4.11 gears do me good also?
Last edited by ThEHiTMaN; Jun 23, 2005 at 02:13 PM.
Jun 23, 2005, 02:26 PM
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Unless you change the gearing, the gears will still fly by pretty fast, because you haven't changed them relative to each other (i.e. your rpm difference between gears is the same). If you look at the shift point graph I did for Fourdoor, it should be easy to see. Based on Jon's replies, I think you can just change the FD, no need to redo 4th and/or 5th unless you want to change their gear ratios w/out changing the 1-3 gear ratios.
l8r)
l8r)
Jun 23, 2005, 02:53 PM
#42
Originally Posted by 'ringmeister
-Jon, is there a short 5th gear ratio available? if so how difficult an install?
Not hard at all if you have all the proper tools and all the small parts that REALLY should be replaced any time that you are in the transmission.
Jon@TRE
Jun 23, 2005, 02:57 PM
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I c.... 1,2,3 still seem to fly by in the chart so to change all that you would have to do more then just change the final drive? More like change 1,2,3,4,5 gears? I couldn't imagine what the stock gears must be like with 400+ whp....
Jun 23, 2005, 03:17 PM
#44
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Originally Posted by GEARS
I can get the 4.11 gears if people would want them but honestly the tooth profile isn't much stronger than the stock gearing.
If you are making 450HP you will want the drag race gears.
Jon@TRE
http://www.teamrip.com/Evolution.html
If you are making 450HP you will want the drag race gears.
Jon@TRE
http://www.teamrip.com/Evolution.html
How would the first gear drivability be.Cause in all reality wouldnt it almost be like starting in second gear sort of.
Jun 23, 2005, 03:18 PM
#45
The shift points and entry into the next gear will still be at the same RPM, but it will take longer to get through each gear since you are accelerating to a higher MPH in each gear than you did with the stock setup. Thus, the gears will not fly by as fast. Put it this way, to get a 115 mph trap speed you are actually crossing the finish line at around 120 mph. With stock gearing that is the top of 4th gear. With the TRE gearing you will only have been in 4th gear for 900 RPM (5,500 RPM up to 6,400 RPM) to be crossing the finish line at 120.
Keith
Keith