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freakin out about tranny

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Old Jan 11, 2008 | 06:42 PM
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freakin out about tranny

i have an 07 wrx with stage 2 ap tbe sti top mount. just got the vf 43 for a good deal just had to get it. i have been wanting to do a turbo swap for a while. now alot of people are telling me that i should upgrade to sti ra gears, that the wrx stock gears will break. i have only had my car for 8 months or so. i do not want to be blowing out any gears anytime soon. i know its all abouthow you drive but now im really scared about putting the vf 43 and tuning it beacause i dont wanna break anything.


input PLEASE! IM LOOSIN MY MIND
Old Jan 11, 2008 | 06:45 PM
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You gears are the same width as the RA Gears. Ratios are different but the strengths are pretty close. Just take it easy on your tranny launching slamming the gears and all that.

If you are really worried then upgrade to PPGs or STi 6 Speed. There are a lot of people here who have upgraded turbos on their 5mt.

http://forums.nasioc.com/forums/showthread.php?t=665334

Theres some reading you might be interested in.
Old Jan 11, 2008 | 06:54 PM
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yeh, try not to launch it very often, be nice to the car and it'll be nice to you...
Old Jan 11, 2008 | 07:07 PM
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i have only launched my car after the break in period a couple times thats it. i just hear about all these people that blow out gears i just dont wanna be one of those people im starting to rev match and learn all that im just freakin out
Old Jan 11, 2008 | 08:09 PM
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i can take alll the info you guys have. just throw it at me
Old Jan 12, 2008 | 09:19 AM
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I busted my 3rd after 2 months of my vf39 swap.
Old Jan 12, 2008 | 10:28 AM
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What about 06+ WRX owners? Your final drive is 3.70 vs the previous year models' 3.90. This in effect adds 6% more load to your gears vs. previous years. While it's impossible to calculate this into the shock load formula mentioned above, it is noted that there are an increasing amount of 06+ owners with broken gears being seen here. So shift/drive kindly, investigate increasing your apparent final drive through smaller diameter tires, and temper your power modifications based on how soon you can afford to upgrade gears.
This was taken from Unabombers transmission fact.
Old Jan 12, 2008 | 04:29 PM
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woodward what did you have done to your car when you had the 39. what did you do after you busted third how long were you out of comission.
Old Jan 14, 2008 | 09:10 AM
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IMHO, 99.9% of all tranny failures are due to operator error.
Yes, the gears aren't "as strong" as we'd like them to be, but ultimately, the operator is deciding factor how long the gears will last.

I have yet to get a tranny that "just broke".

Evidence of this can be found in Lowball's car w/ ~40k on the clock; very spirited driving with a TON of track miles without tranny failure.

A good choice for replacement gearsets can be found in the RA version.
Keeping your stock 5th gear helps with cruising speeds.
Old Jan 16, 2008 | 01:10 AM
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Originally Posted by 07wrxguy
woodward what did you have done to your car when you had the 39. what did you do after you busted third how long were you out of comission.
TBE, EM, VF39.

After I busted 3rd I rattled my *** home and started doing research. I was out a couple months bc I had also cracked my case so I had to order a new early-06 case.
Old Jan 16, 2008 | 01:51 AM
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Originally Posted by Woodward
TBE, EM, VF39.

After I busted 3rd I rattled my *** home and started doing research. I was out a couple months bc I had also cracked my case so I had to order a new early-06 case.
god damn. I'm guessing you drove your car hard?
Old Jan 16, 2008 | 02:13 AM
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Ryan aka woodward never really drove his car hard at all. I was in the car with him before when he did a WOT pull, shifted smooth and everything. Didnt pop the clutch, just one of those things is all.

Only time can tell i guess??
Old Jan 16, 2008 | 03:23 AM
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I've heard of stock 06-07's busting 3rd and I've heard of 20g protuned ones with the stock tranny running fine. I was doing some research and found a ton of WRXs made late 2005- early 2006 blowing 3rd more than the more recent ones.

The smart thing to do is have some extra cash saved up just in case you find yourself with a blown gear.
Old Jan 16, 2008 | 12:55 PM
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hey guys thanks for the info it really does help calm me down a little i just got to be careful thats all
Old Jan 17, 2008 | 10:38 AM
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Originally Posted by Woodward
I've heard of stock 06-07's busting 3rd and I've heard of 20g protuned ones with the stock tranny running fine. I was doing some research and found a ton of WRXs made late 2005- early 2006 blowing 3rd more than the more recent ones.

The smart thing to do is have some extra cash saved up just in case you find yourself with a blown gear.
Did you ever change your tranny oil change before it blew?

I'd love to go to a bigger turbo but my advice is.. if ya can't afford a new tranny, don't do it. I'd be so screwed if my tranny blew. Bleh, makes me sick just thinking about it!



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