363 gears MPG? - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Suspension, Brakes, Drivetrain discuss the wondrous effects of boost and your miata...

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 03-09-2011, 05:26 PM   #21
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Quote:
Originally Posted by gianic View Post
Anybody here with 3.6 and 5-speed?
The gears are too big, you'll cruise in 4th on the freeway. Check the FM gearing calculator.
hustler is offline   Reply With Quote
Old 03-09-2011, 06:01 PM   #22
Junior Member
iTrader: (4)
 
Join Date: Mar 2007
Location: Greece
Posts: 290
Total Cats: 4
Default

Quote:
Originally Posted by hustler View Post
The gears are too big, you'll cruise in 4th on the freeway. Check the FM gearing calculator.
These are my ratio's (fc t2 tranny)

3.483
2.015
1.391
1
0.762

Don't you think I need something wider for 340whp?
Currently I am running a 4.1 fgr
gianic is offline   Reply With Quote
Old 03-09-2011, 10:37 PM   #23
Senior Member
 
Join Date: Sep 2007
Location: Alamo City, Tejas
Posts: 774
Total Cats: 1
Default

Quote:
Originally Posted by gianic View Post
Anybody here with 3.6 and 5-speed?
That's be me.

Built '97 block, '99 head w/ 1-mm oversized valves and essentially a BEGI S5(+) setup.

Saw an avg of 20mpg while "playing", 25 when obeying most traffic laws and conventions and never measured on a long enough trip to get highway numbers.

These figures may change soon. Corky and I are in the midst of the next round of "upgrades"...

- L
l_bader is offline   Reply With Quote
Old 03-09-2011, 10:49 PM   #24
Junior Member
iTrader: (4)
 
Join Date: Mar 2007
Location: Greece
Posts: 290
Total Cats: 4
Default

Quote:
Originally Posted by l_bader View Post
That's be me.
How is the performance? Does it feel slower than the 4.1 or it eats distances like crazy? How much power do you have?
gianic is offline   Reply With Quote
Old 03-09-2011, 11:04 PM   #25
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

Quote:
Originally Posted by l_bader View Post
These figures may change soon. Corky and I are in the midst of the next round of "upgrades"...

- L

Details details!!!!! Please?
Faeflora is offline   Reply With Quote
Old 03-09-2011, 11:50 PM   #26
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

Quote:
Originally Posted by gianic View Post
These are my ratio's (fc t2 tranny)

3.483
2.015
1.391
1
0.762

Don't you think I need something wider for 340whp?
Currently I am running a 4.1 fgr
I'll cut you some slack because your people know how to make yogurt.

http://www.flyinmiata.com/tech/gearing.php
hustler is offline   Reply With Quote
Old 03-10-2011, 09:51 AM   #27
Junior Member
iTrader: (4)
 
Join Date: Mar 2007
Location: Greece
Posts: 290
Total Cats: 4
Default

Quote:
Originally Posted by hustler View Post
I'll cut you some slack because your people know how to make yogurt.

http://www.flyinmiata.com/tech/gearing.php
True about the yogurt. We make great feta cheese also.

About the site.. been there done that, doesn't help much. I need feedback from someone who actually drives this thing.
gianic is offline   Reply With Quote
Old 03-10-2011, 11:10 AM   #28
Senior Member
 
Join Date: Sep 2007
Location: Alamo City, Tejas
Posts: 774
Total Cats: 1
Default

Quote:
Originally Posted by gianic View Post
How is the performance? Does it feel slower than the 4.1 or it eats distances like crazy? How much power do you have?
I start building boost at about 1600 and see full pressure from 3k to redline. No, it doesn't feel slower.

The car generates about 200/200 at 7psi and 250/240 at 12psi. Runs like a scalded cat.

Quote:
Originally Posted by Faeflora View Post
Details details!!!!! Please?
- Adjustable timing gears to drop a few degrees from the intake cam, and add a couple from the exhaust.
- COPs courtesy Savington.
- 255 Walbro.
- Corky's new cast intake manifold.
- Thermostat'd oil cooler.
- Under tray/ducting.
- Some minor maintenance bits; ie: adjusting valves, belts, etc.
- Retune at the dyno.

As soon as we have some numbers, they'll be posted. However, the aim is to significantly increase power at the same boost levels, with the aim of breaking the 150mph barrier *with the top down* on street tires (non-R comp) at the Texas Mile this October.

(Then I'll put a hardtop on it and see what 160+ looks like...)

- L
l_bader is offline   Reply With Quote
Old 03-10-2011, 12:49 PM   #29
Elite Member
iTrader: (11)
 
chicksdigmiatas's Avatar
 
Join Date: Apr 2008
Location: Texas, 'Murica
Posts: 2,505
Total Cats: 7
Default

If you want to retain a 5 speed, and you think the 4.10 is too short, you could do a 5 speed/3.9 rear and have a decent set up. My 6 speed/3.63 isnt in due to procrastination/lack of time.
chicksdigmiatas is offline   Reply With Quote
Old 03-10-2011, 02:51 PM   #30
Elite Member
iTrader: (15)
 
Join Date: Dec 2007
Location: San Antonio, Texas
Posts: 4,889
Total Cats: 28
Default

I and others have said it before. the 3.63 and 6-speed combo is fantastic. The ratios in 1-5 are not exactly the same as a 4.30 with a 5 speed, but it is close enough such that it behaves like a normal 5-speed with an additional 'overdrive' gear.

Now that being said, when I did the 3.63 6-speed swap in my turbo car (versus 4.30 5-speed) I did not see a big jump in mileage like I had hoped. I do mostly highway driving at 70-80 mph, with some stop-and go. I checked/logged mileage every time I filled up. I also checked the odometer to be sure it was accurate.

I was also tuning for lean cruise. But, I was conservative with my fuel tuning, adding fuel (richness) at anything above 100 kPa, which is easy to exceed on the highway with just light passing, which I do a lot of. My fuel curve sloped upward quickly at anything above 80-100 kPa. So I did not spend a lot of time in the lean cruise mode.

YMMV, literally.

DVCN is tuning for lean cruise with E85 and is getting good initial results. His commute is very, very similar to mine. IIRC he covers this in his recent E85 thread.

Even though it was my intent going in, I was so happy with the improved highway drive-ability that I did not care so much about getting the big mileage return-on-investment (ROI) on the taller gear set.
ZX-Tex is offline   Reply With Quote
Old 03-10-2011, 03:58 PM   #31
Elite Member
iTrader: (24)
 
chriscar's Avatar
 
Join Date: Dec 2007
Location: Carrollton TX
Posts: 1,702
Total Cats: 13
Default

What kind of prices are you guys paying to get these installed? I bought a set of 3.63's and need to get 'em in.

C
chriscar is offline   Reply With Quote
Old 03-11-2011, 12:46 AM   #32
Elite Member
iTrader: (2)
 
Join Date: Jan 2007
Location: Los Angeles, CA
Posts: 8,782
Total Cats: 119
Default

$400. I will sell my whole thing for $1200
Faeflora is offline   Reply With Quote
Old 03-11-2011, 01:37 AM   #33
Elite Member
iTrader: (11)
 
Join Date: Feb 2009
Posts: 2,982
Total Cats: 10
Default

i need a torsen with 3.63s already installed. I'm lazy
miatauser884 is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
VW is responsible for rolling global coal warming? skidude Insert BS here 150 11-25-2015 03:42 PM
WTB HKS CAM GEAR AnotherDamnMiata WTB 0 09-23-2015 04:26 AM
Become a race star with RaceQuip Racing Gear carid Official Miata Turbo Vendors 0 09-08-2015 08:19 AM
Grinding into 5th and coasting shanesauce General Miata Chat 1 09-06-2015 09:47 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 09:08 AM.