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Old 12-01-2011, 02:47 PM   #61
C4 Cory
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Re: Raising MT gear ratios - xB1

It is probably half that just for the R&R, if you can pull the trans and put it back in yourself or get someone to help you and do the clutch yourself it should be no more than $600 to 7 for the gear swap.
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Old 12-01-2011, 10:30 PM   #62
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Re: Raising MT gear ratios - xB1

I'm going to seriously consider this when clutch replacement time comes around. It's been 40 years since I last pulled a transmission and replaced a clutch, and that was on a RWD. Still, I can probably do this on a FWD.
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Old 12-08-2011, 10:09 PM   #63
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Re: Raising MT gear ratios - xB1

Best MPG,
Haven't been on this forum in several months. I saw your 60 mpg video last night.

When I need a clutch replacement I'm considering changing the 5th gear or changing the final gear ratio. In your research, did you find any 6 speed that will fit?

It looks like the old Corollas with the C50 and C52 transmissions, and the C150 in the Echos all have the same 4th and 5th gear ratios. Only the final drive ratio is different.

Did you find a 5th gear available that will drop the trans one "step"?

Personally I wouldn't change the final gear ratio and the 5th too. I wouldn't want to lose the low speed performance and if you slow the 5th gear ratio down you might not have enough rpm's when you shift into 5th to pull a hill or if you're traveling with luggage or passengers.
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Old 12-09-2011, 02:06 AM   #64
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Re: Raising MT gear ratios - xB1

apryor,

It's all in this thread. There's a taller .72 5th gear in Tercels, but I can't tell which transmission they come with, or whether a single gear swap or full tranny swap needs to be/or can be done.

There's a C160 six speed swap possible, but the frame has to be cut to shoehorn it in, and you end up with gear ratios not much different than stock xB's.

A ring & pinion swap of Yaris 3.722 gears sounds like the way to go.
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Old 12-13-2011, 09:35 PM   #65
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Re: Raising MT gear ratios - xB1

The yaris trans is the same C50 as ours but the link that Best had posted http://www.scionlife.com/forums/showthread.php?t=192499 saying that it wont fit cause of the dogbone mounting location. I'm not sure what he means by dogbone, if it is the the clutch arm he is talking about I think we can fix that by swaping the bellhousing from our trans on to the yaris trans. So if someone can tell me what he means by dogbone or if I am right and if I am right this will be a much cheeper way for Best to get the 3.722 that he wants.

---------- Post added 12-13-2011 at 10:11 PM ----------

OK, after compairing pics of both trans I can see that the shift cables attach in different spots but might be able to be moved or maybe we can get longer cables from another car to work.

---------- Post added 12-13-2011 at 10:13 PM ----------

Maybe the yaris cable would work.
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Old 12-14-2011, 11:31 AM   #66
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Re: Raising MT gear ratios - xB1

I'm in NM, en route to GA. When I get back, I'll make a trip to my Toyota dealer to examine - er, test drive - a couple of Yarises.
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Old 01-24-2012, 10:34 PM   #67
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Re: Raising MT gear ratios - xB1

I just got finished reading through all the posts on the past 4 pages and am eagerly awaiting what you guys have found out, if anything. My 5 speed has a bad grind in 3rd (107k miles on it) and my clutch is starting to slip after being on the highway for more than 30 minutes so this may be a possible swap in the near future for me :-)
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Old 01-25-2012, 02:01 AM   #68
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Re: Raising MT gear ratios - xB1

I lost interest in the project, as I'm having to shell out $20,000 for a new car we had to buy just after Christmas.
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Old 01-25-2012, 06:09 AM   #69
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Re: Raising MT gear ratios - xB1

Thanks OP!

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Old 01-25-2012, 10:32 AM   #70
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Re: Raising MT gear ratios - xB1

lol. I think I've been insulted.
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Old 01-25-2012, 02:17 PM   #71
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Re: Raising MT gear ratios - xB1

Haha nah but I was REALLY looking forward to the outcome! You left me with a blue pair
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Old 03-25-2012, 03:16 AM   #72
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Re: Raising MT gear ratios - xB115

Im still really interested in doing this but I think are best shot at seeing how are cars will do will taller gears will be to get some taller tires it mimic the gear swap, but I did just get a SC so that should make up for any power loss from taller gears or tires. the SC it not on yet, I would like to try a 195 75 15 was the size I was looking at or if they make 195 80 15 or maybe even something norrower like 190 or back to the 185 stock with just taller and less wieght, I have 195 60 15. I just jooking for 2 tires to try this, if get this figured out i my do these on the side or allthe time
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Old 03-25-2012, 03:22 AM   #73
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Re: Raising MT gear ratios - xB115

Quote:
Originally Posted by C4 Cory View Post
Im still really interested in doing this but I think are best shot at seeing how are cars will do will taller gears will be to get some taller tires it mimic the gear swap, but I did just get a SC so that should make up for any power loss from taller gears or tires. the SC it not on yet, I would like to try a 195 75 15 was the size I was looking at or if they make 195 80 15 or maybe even something norrower like 190 or back to the 185 stock with just taller and less wieght, I have 195 60 15. I just jooking for 2 tires to try this, if get this figured out i my do these on the side or allthe time
Not to be rude, but this has been the most retarded comment I've seen in quite some time.
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Old 03-25-2012, 03:43 AM   #74
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x2.

Multiple spelling errors and interesting word choices are sprinkled that post.


Good luck running 205/70/15 Caravan tires on an xB...
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Old 03-25-2012, 03:43 AM   #75
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**in*
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Old 03-25-2012, 06:42 AM   #76
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Trainwreck comes to mind

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Old 03-25-2012, 10:04 AM   #77
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Re: Raising MT gear ratios - xB1

195/75-15s are nearly 3" taller in diameter than our OEM 185/60-15s. That's a lot of tire to try to cram into a wheel well. I rub already on turns with tires that are 5.31% taller than OEM. The 195/75-15s are 10.45% taller.

I agree it's the most cost-effective way to test taller gearing. The 195/75s would drop our MT rpms at 60 mph from 3096 (OEM) to 2772. That's reasonably close to the Yaris ring and pinion swap's 2674 rpm @ 60 mph.

My current tires have me running 2932 rpm @ 60 mph. Even at our proposed 2772 or 2674 rpm, the AT xBs cruise slower, 2545 rpm @ 60 mph. That's why I'm not concerned about being underpowered after a tranny gear swap.

I know your concern/goal isn't fuel economy, but mine is. A supercharger is a parasitic drag to me. It sucks power from the engine when it's not boosting, so it's not for me.

I'll have the wife's $20k car paid off next month. Then I can ponder the ring/pinion gear or tranny swap again.
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Old 03-26-2012, 07:09 PM   #78
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Re: Raising MT gear ratios - xB1

Im not saying run that size tire all the the time, I ment you would only need 2 on the front just for a test to see how it drives and feels. That size tire may be 3" taller than stock so that means if you take a tape measure to the tread of a stock tire then add 1 1/2" that will show you where the tread of the taller would be. I have 195 60 15s now so 195 75 size will be 1.15" bigger so I measered and it looks like they will fit up front enough to do a test drive. Im only using 195 75 15 size cause that works out close to what the R@P change would feel like, and yeah they will probably rub so the is why I mentioned those other numbers or looking for something narrower so they wouldn't rub as much. So again this is only a test, a way to find out how your car would feel with a gear swap.
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Old 03-26-2012, 09:34 PM   #79
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Re: Raising MT gear ratios - xB1

I just bought 2 X 195/65-15s to complete a set for a couple of upcoming drives to TX and NM. I thought about going to a shop selling used tires & paying them to mount a 195/75-15 for a trial just to check clearance, but I got new tires instead
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Old 06-15-2012, 01:13 PM   #80
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Re: Raising MT gear ratios - xB1

I know I'm resurrecting an old thread so please don't flame me...

I had an idea about the 6sd swap, is there a way to shift the engine to accommodate the extra room needed for the 6th gear? I haven't played with much in my new-to-me xB, but I remember similarities to this in my days as a Honda guy. (I hope I don't get reamed for that, too) Changing mounts to fit new engines/trannies on older Honda Civics and Preludes are probably a different animal though.
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