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Old 12-29-2011, 11:52 PM   #1126
zephyrus
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The radiator for the EZ30D (at least) will drop right into the stock radiator support.
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Old 12-31-2011, 12:30 PM   #1127
TexasLegacy2.5GT
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Tranny's?

I hear that the 30R is going to eat up the 5MT that I have in my BD legacy. Does anyone have a good idea on a Subaru Tranny that will have good manual gear ratio's and the strength to stand up to the EZ30R's power?


How does this look?

http://dallas.craigslist.org/dal/pts/2738415536.html

And this?

http://houston.craigslist.org/pts/2695121103.html
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Old 12-31-2011, 12:51 PM   #1128
Seraphinwolf
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WRX trans is not a strong choice. 06'+ WRX it a 6mt of any year. JDM trans are stronger.
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Old 12-31-2011, 01:00 PM   #1129
Seraphinwolf
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Quote:
Originally Posted by TexasLegacy2.5GT View Post
Can someone on here talk about what they have done to the radiator support when swapping the EZ30. Either the D or the R flavor. They are both the same dimensions.
I'm in a place where I have to get some work done on the front due to a fended bender that happened to the car before I owned it. So if the radiator support needs to come out now would be a good time to know about it.
Quote:
Originally Posted by zephyrus View Post
The radiator for the EZ30D (at least) will drop right into the stock radiator support.
Radiator support needs no modification on the 3.0L's. But I eouldn't use the stock one. Instead get an aftermarket on and have a second opening added to the too to accommodate the two coolant lines that run into it.
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Old 12-31-2011, 04:32 PM   #1130
TexasLegacy2.5GT
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SWolf,

Does this look like a good choice for a radiator:

http://dallas.craigslist.org/dal/pts/2764409830.html
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Old 12-31-2011, 06:09 PM   #1131
Seraphinwolf
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Not bad. I'll be using a Mishimoto for mine.
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Old 12-31-2011, 06:21 PM   #1132
TexasLegacy2.5GT
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Wolf, I read up on this EZ30R transfere all the time and most tuners do not prefer the 6Spd over the 5spd. I'm really thinking about staying 5mt but changing the gears on my BD.

Here is a cool conversion that was for sale. Very cool. But I could not find the write up on it....
http://www.ozliberty.com/home/forum/...2-sedan-17909/
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Old 01-01-2012, 11:15 AM   #1133
Patrick Olsen
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Quote:
Originally Posted by TexasLegacy2.5GT View Post
Tranny's?

I hear that the 30R is going to eat up the 5MT that I have in my BD legacy.
Unless you drive stick like a ham-fisted clown, you should be fine with the 5MT. There are plenty of WRXs out there running stock 5MTs with way more torque than stock (and way more torque than the EZ30R is going to make). The WRX 5MTs are not appreciably stronger than your 2.5GT's 5MT.

Quote:
Originally Posted by TexasLegacy2.5GT View Post
Wolf, I read up on this EZ30R transfere all the time and most tuners do not prefer the 6Spd over the 5spd.
Don't prefer it in what way? You don't need to install a 6MT to run the EZ30R, but I can't imagine there are any tuners out there that would say the 5MT is a better transmission. The only advantage the 5MT has over the 6MT is that it's a lot lighter.

Quote:
Originally Posted by TexasLegacy2.5GT View Post
I'm really thinking about staying 5mt but changing the gears on my BD.
Changing the final drive ratio, or changing 1-5 ratios?
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Old 01-01-2012, 04:31 PM   #1134
Seraphinwolf
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I'm really confused as to why any turner would want to see a 5mt over the 6mt also. They are stronger, can more precisely target an RPM range, and have no drawbacks that I can think of other than 1/4 mile times and weight.

I'm also wondering about you changing the gearing. Which way?
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Old 01-01-2012, 04:34 PM   #1135
eg33GC
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The issue is not peak tq numbers, it is when it comes on.

any h6 is practicaly double the tq at half the rpm than that of a 4. This is obviously hard on the gears.
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Old 01-01-2012, 06:23 PM   #1136
TexasLegacy2.5GT
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6MT ratios and the power curve of a SuperCharged EZ30R would mean numerous shifts.

The 5MT just seems to be the consensus of the fellas that have all actually done the swap.

Also, I like the idea of being lighter when the swap is done.

I've read that other fellow seaports want taller gears in the 5MT as a preference after feeling their way about the car's new power curves for TQ.
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Old 01-01-2012, 06:36 PM   #1137
Seraphinwolf
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5mt's are heard to scavenge all the torque possible cause they normally aren't in cars that would have much pick up down low.
In my 04' STi 6mt I'm gonna change out 5th and 6th to the longer Spec B 5th and 6th.

The beauty of an H6 is all of your gear range is usable rather than H4's that have high hearing or low gearing for cruising or take off but not much in between.
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Old 01-01-2012, 06:37 PM   #1138
Seraphinwolf
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94SVX LSi Bourduex Pearl

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Oh and on the weight... It's only relative...
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Old 01-01-2012, 06:56 PM   #1139
eg33GC
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^not like the power/tq increase isn't worth the 200lbs

the EG needs taller gears imo since it peaks tq near ~5000 but carries power through 7500+

I would use a 07 6mt if I did it again.
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Old 01-01-2012, 07:21 PM   #1140
Seraphinwolf
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200#'s which is only like a 50# difference from the 5mt...
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Old 01-01-2012, 08:58 PM   #1141
TexasLegacy2.5GT
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Quote:
Originally Posted by eg33GC View Post
^not like the power/tq increase isn't worth the 200lbs

the EG needs taller gears imo since it peaks tq near ~5000 but carries power through 7500+

I would use a 07 6mt if I did it again.
^^EG, do you have a write up on your last build (EG33) that I can take a look at. I'd really like to see that! Also, why the 07' 6MT in particular?
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Old 01-01-2012, 09:06 PM   #1142
Seraphinwolf
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5th and 6th gears are longer also the center diff was changed to a 1.1:1 so the rear diff is a 3.54 and the front is 3.9, Also the gears are supposed to be even stronger than the older ones.
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Old 01-02-2012, 02:28 PM   #1143
Patrick Olsen
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Quote:
Originally Posted by eg33GC View Post
The issue is not peak tq numbers, it is when it comes on.

any h6 is practicaly double the tq at half the rpm than that of a 4. This is obviously hard on the gears.
That's a pretty healthy exaggeration. Here are the power/torque graphs from the brochures for my EJ25D, a WRX EJ205, and a '01-04 EZ30:


So yes, the H6 makes a lot more torque at 1000rpm, but I don't imagine many of us are spending a lot of time at WOT at 1000rpm. And keep in mind that's only a 2.0L WRX - the 2.5Ls make significantly more torque everywhere, so that gap down low wouldn't be as big. The EZ30R also has a slightly higher torque peak than the EZ30, and presumably has a wider torque band due to the cam timing/lift tricks, but I've never seen that quantified anywhere. I think my point is still valid regardless - there are WRXs running big torque numbers, much bigger than the EZ30R puts out, some using small turbos for low RPM spool.

Of course, my comment about the ability of the 5MT to stand up to the EZ30R's torque was assuming Texas was planning on just swapping in a stock EZ30R, since he hadn't mentioned any plans for anything other than that. Now he's talking about a supercharged EZ30R, which would change my response.

Quote:
Originally Posted by TexasLegacy2.5GT View Post
6MT ratios and the power curve of a SuperCharged EZ30R would mean numerous shifts.
This comment confuses me in so many ways, I'm not even sure where to begin.
What supercharged EZ30R?
Why would a supercharged EZ30R's power curve require any more shifts with a 6MT than it would with a 5MT? A supercharged EZ30R would presumably have a nice broad torque curve, which means you don't need to shift all the time. Quite the opposite, in fact. For normal driving in my CTS-V I usually skip gears; only if I'm trying to maximize acceleration do I run through every gear.
Why would you think having an extra gear would be a bad thing? There's a reason modern cars aren't rolling around with 3-speed transmissions like in the 60s or 70s.

Quote:
Originally Posted by TexasLegacy2.5GT View Post
The 5MT just seems to be the consensus of the fellas that have all actually done the swap.
Can you provide some links to folks that feel the 5MT is better than the 6MT? I'm just curious what you're reading.

Quote:
Originally Posted by TexasLegacy2.5GT View Post
I've read that other fellow seaports want taller gears in the 5MT as a preference after feeling their way about the car's new power curves for TQ.
Seaports? Say what?

Quote:
Originally Posted by Seraphinwolf View Post
5mt's are heard to scavenge all the torque possible cause they normally aren't in cars that would have much pick up down low.
Say what?

Quote:
Originally Posted by Seraphinwolf View Post
200#'s which is only like a 50# difference from the 5mt...
I think it's closer to 100#. Well worth it either way.

Quote:
Originally Posted by Seraphinwolf View Post
5th and 6th gears are longer also the center diff was changed to a 1.1:1 so the rear diff is a 3.54 and the front is 3.9, Also the gears are supposed to be even stronger than the older ones.
AFAIK, 5th and 6th are the same in all the USDM STIs 6MTs - 0.971 and 0.756. The '07+ 6MTs have longer 2nd - 4th than the '04-06.
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Old 01-02-2012, 03:05 PM   #1144
Seraphinwolf
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94SVX LSi Bourduex Pearl

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Just double checked. 3nd and 4th
Don't know why I was thinking 07' had changed 5th and 6th. :shrug:

Last edited by Seraphinwolf; 01-02-2012 at 05:00 PM.
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Old 01-03-2012, 08:22 AM   #1145
Fuj1wara
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I would hesitate to use a 6 SPD from an 08+ for that kind of project due to the fact that I sheared half the teeth off of the ring gear while still on the stock turbo in my STi. Yes, it was a drivetrain shock issue. However, at some point (I've heard 07) they stopped cryotreatment of the internals and also removed the active pump from the trans. Just an extra tidbit for the guys considering the pairing of an STi trans with a H6.
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Old 01-03-2012, 12:27 PM   #1146
Duderotomy
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Quote:
Originally Posted by TexasLegacy2.5GT View Post
6MT ratios and the power curve of a SuperCharged EZ30R would mean numerous shifts.

The 5MT just seems to be the consensus of the fellas that have all actually done the swap.

Also, I like the idea of being lighter when the swap is done.

I've read that other fellow seaports want taller gears in the 5MT as a preference after feeling their way about the car's new power curves for TQ.
Quote:
Originally Posted by Patrick Olsen View Post
Can you provide some links to folks that feel the 5MT is better than the 6MT? I'm just curious what you're reading.
If you're considering JDM 6MT's which have practically the same overall gearing in 6th as compared to WRX 5MT's then I could see why fewer shifts might be more comfortable... but with the stronger gears I think living with an extra shift is worth while.

Are you sure you're not reading posts on an Evo forum about the 5MT being better than the 6MT?
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Old 01-09-2012, 12:58 AM   #1147
PHATsuby
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Ok I've searched high and low and searched this thread with "size" and "dimensions".

Can someone who has a EZ30R readily available take some dimensions for me?

Looking for:

Bottom of Oilpan to top of intake manifold distance
Front of crank pulley to rear of engine(where bellhousing starts, aka depth of the motor)
width across the timing chain cover
width across rear of the motor

Anders used to have this info on his site for the ez30 waaaayyyy back in the day but that conversion has since been pulled down of course.

thanks!

Ben
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Old 01-09-2012, 11:29 AM   #1148
milnersXcoupe
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Does their Body Manual have diagrams of front frame layout dimensions?

Need the cradle dimensions EZ36 engine mounting points & length from front of pulley to center line of a mounted MT-6 axle flanges.

Mid engine '64 Porsche conversion.. weld in engine cradle.




Quote:
Originally Posted by PHATsuby View Post
Ok I've searched high and low and searched this thread with "size" and "dimensions".

Can someone who has a EZ30R readily available take some dimensions for me?

Looking for:

Bottom of Oilpan to top of intake manifold distance
Front of crank pulley to rear of engine(where bellhousing starts, aka depth of the motor)
width across the timing chain cover
width across rear of the motor

Anders used to have this info on his site for the ez30 waaaayyyy back in the day but that conversion has since been pulled down of course.

thanks!

Ben
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Old 01-09-2012, 01:54 PM   #1149
Seraphinwolf
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97 OBS EZ30R
94SVX LSi Bourduex Pearl

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Quote:
Originally Posted by PHATsuby View Post
Ok I've searched high and low and searched this thread with "size" and "dimensions".

Can someone who has a EZ30R readily available take some dimensions for me?

Looking for:

Bottom of Oilpan to top of intake manifold distance
Front of crank pulley to rear of engine(where bellhousing starts, aka depth of the motor)
width across the timing chain cover
width across rear of the motor

Anders used to have this info on his site for the ez30 waaaayyyy back in the day but that conversion has since been pulled down of course.

thanks!

Ben
I will try for too and take pics that Pat want tonight or tomorrow night.
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Old 01-09-2012, 05:29 PM   #1150
PHATsuby
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Quote:
Originally Posted by Seraphinwolf View Post
I will try for too and take pics that Pat want tonight or tomorrow night.
Awesome thanks!

Ben
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