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Underbody braces, turbos and more!

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PostPosted: Thu Sep 18, 2008 6:09 pm 
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a.k.a Bum head
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turbohull wrote:
not in my case, simply because they don't break loose, hey it's a 3 banger, it's probably making +- 120hp not more.

In your case it's all about the redistribution of stress. Something will break eventually... there's nothing you can do short of building something custom. These transmissions weren't made for the abuse we give them.


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PostPosted: Thu Sep 18, 2008 10:12 pm 
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i have raced several years on the same transmission...after 275,000 street kms. tore it down and it looked beautiful inside. synchromesh and rev-matching took care of it...

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PostPosted: Fri Oct 10, 2008 9:20 am 
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the tranny i got now is all to specs, i replaced the shims to adjust the preload, adjusted the differential height in the case, etc.

i removed the spring pin in the diff and replaced it with a solid pin. So far it's holding the abuse of 23 psi of boost. I use what suzuki recommends, straight 75W90 GL4 gear oil.

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PostPosted: Wed Mar 18, 2009 5:57 pm 
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This carnage was caused by an improperly staked 5th gear (driven) nut:
Image
5th gear driven (on right) shows significant shredding.
Image
Here, you can see it more clearly.The damage also included some missing/broken teeth on 5th gear (drive) on the left.
Once the case was split, the effects of trying to 'nurse' this tranny became more apparent:
Image
The pinion gear has lost a bit of metal.
Here's another view:
Image
It's a black box MK2/3 tranny with a 72/19 ring(crownwheel)/pinion final drive (3.79) single pin (not a GT/GTi tranny) which I pulled out of an 89 GTi.

If the 5th gear nut isn't tight and 'staked' properly, it can work loose. 5th gear can wander on the shaft, with the resultant shredding. The broken teeth eventually found their way into the final drive gear set, and ruined those.
The other gears seem fine. The case was scored, but is reuseable.

Solution? Assemble the boxes clean. Oil residue can work against you, allowing the 'fasteners' to loosen.

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Once you get the cars dialed-in (compression, leaks, bearings, alignment, brakes) swap in new rubber and glass, you've got something which should last for years!


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PostPosted: Sun Apr 05, 2009 11:08 pm 
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Location: Rochester NH
I wish I had pics of the carnage but I had a mazda v-6 that I managed to shift into 2nd and 4th at the same time and as you can imagine that doesn't bode well as 4th was instantly destroyed into many little pieces that rattled around in the tranny for the next month as I drove the car without third and forth because the shift fork was stuck in forth and so I could get it into third.

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PostPosted: Tue Jun 09, 2009 7:21 pm 
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Location: Regina, SK
Tranny on my car is/was making some bad noises, so I dropped out the old fluid.

Image

What would this be from?

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My cars:

J. McBean: '98 Suzuki Swift 1.3L 16v SOHC 5sp+ "Mk5" Made in Canada
The Mini Rattler: '94 Suzuki Swift .993L 6v SOHC 5sp+ "Mk3" Made in Canada *The Winter Beater*
B. Berry: '90 Chevrolet Turbo Sprint 1.0L 6v SOHC 5sp+ "Mk2" Made in Japan

I got 18MPG in a 3cyl with a 5 speed manual 4dr, '93 Metro! :yeahyeah


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PostPosted: Tue Jun 09, 2009 11:42 pm 
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That's the "cage" that holds the balls in one of the bearings.

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PostPosted: Wed Jun 10, 2009 1:20 am 
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fordem wrote:
That's the "cage" that holds the balls in one of the bearings.


Ooooo, you get a cookie, for getting the right answer! 8)

Now to find out where the balls went... It's from an output bearing as it only moans and groans when the vehicle is in motion.

Edit: Looking over the reciepts, the previous owner spent $1000 to get an overhaul kit put in, and 2000km later he had to replace 1st to 4th gear and 1st gear to 5th gear syncros. They made him pay for used parts, but the labour was free, so it was their screw up... Gotta love the "labour warranties" these honest business folk around here use. :roll:

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My cars:

J. McBean: '98 Suzuki Swift 1.3L 16v SOHC 5sp+ "Mk5" Made in Canada
The Mini Rattler: '94 Suzuki Swift .993L 6v SOHC 5sp+ "Mk3" Made in Canada *The Winter Beater*
B. Berry: '90 Chevrolet Turbo Sprint 1.0L 6v SOHC 5sp+ "Mk2" Made in Japan

I got 18MPG in a 3cyl with a 5 speed manual 4dr, '93 Metro! :yeahyeah


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PostPosted: Fri Jun 19, 2009 9:54 pm 
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Location: Trinidad, West Indies
The end result of a 1000cc Transmission being fitted to a GTi DOHC, lol

Image

I actually had a GTi Diff, and when I sat them down next to each other, the size difference in the spider gears was VERY apparent!

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PostPosted: Fri Aug 28, 2009 2:44 am 
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Location: CA
You mean that a 3 cyl sprint/Geo tranny will bolt up to the 4 cyl motor???? I didn't even think that you could switch the Sprint and the Geo trannys. Will the GTi tranny fit on a 3 cyl?


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PostPosted: Fri Aug 28, 2009 6:53 pm 
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yes, it would also make an improvement

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'08 Suzuki SX4 Sport 2.0 , average baby carrier


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PostPosted: Fri Aug 28, 2009 7:34 pm 
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Location: Trinidad, West Indies
A few months ago I had to rebuild a gearbox that was fitted to a GTi, and it turned out to be the 1.0L version gearbox, I noticed a few differences with the 3 (1.3L GTi, 1.3L non GTi & 1.0L) gearsets (besides the ratio differences of course). I've posted pics of the 1.3L GTi, 1.3L non-GTi & 1.0L diffs below, I've also noticed that the 4.38:1 final drive pinion to be shorter in length than the 1.3L (non-GTi) & 1.3L GTi. look at the pictures below to see the obvious differences I've noticed;

The GTi Diff.

Image

another view

Image

And the 1.3L non-GTi Diff. (notice the different color diff pin, and how much smaller the spider gears are in this example)

Image

another view

Image

And the 1.0L Diff.

Image

Another view

Image

Above is the 1.0L (4.38:1 pinion) and below is the GTi (4.1:1 Pinion)

Image

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PostPosted: Sun Aug 30, 2009 9:24 pm 
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Location: CA
Ahh, I see a Mini in the background! Do you have a 1.0 in it? I am doing the same, as soon as I find a pick-up. Hope to get 70 MPG eventually(US)
Cheers.


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PostPosted: Mon Aug 31, 2009 7:19 am 
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steeve wrote:
Ahh, I see a Mini in the background! Do you have a 1.0 in it? I am doing the same, as soon as I find a pick-up. Hope to get 70 MPG eventually(US)
Cheers.


actually that's a mk. 2 Cooper S Longman stage 4 1332cc engine. not too much economy in that, lol.

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PostPosted: Mon Aug 31, 2009 4:44 pm 
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just finished a non-economy Mini myself; Honda B16 vtec swap. Time for a MPG car now.


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PostPosted: Wed Aug 03, 2011 5:54 pm 
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Location: Qc Canada
what happens @ 25 psi of boost
Image

Image

Image

this was a cultus fwd gearset!!! :oops:

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PostPosted: Thu Aug 04, 2011 9:51 am 
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fordem wrote:
Now - I could be wrong - but the GT/GTi differentials are bigger & stronger than the "non GT/GTi" diffs, but I think the output or countershaft gears - the other gear that you destroyed - are pretty much the same material & strength.

I know this post is old, I just wanted to emphasize the pics posted above and how the material looks to be cut wider... the gears themselves on the countershaft are stronger, unless that is ONLY the 4.39 which seems strange. how much money could that really have saved them??? this thread makes me sad to know my fwd pulsar transmission running on my meth'd out, bolt on ca18det is gonna look like in another month or so :(

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PostPosted: Thu Nov 24, 2011 12:15 am 
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Image
My Gti tranny dead


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PostPosted: Wed Jan 25, 2012 1:51 am 
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Location: castlerock Wa,
last swift trans to ever be in my car ever.
image_id: 21221
this is the diff pin i didnt toutch it other than pull the whole diff out.
image_id: 21219
greeted by this when i seperated it from the motor.
image_id: 21218
the carnage
image_id: 21220

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1990 swift GL Twincam swap
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PostPosted: Wed Jan 25, 2012 2:16 pm 
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how much more powerful is your engine from stock ?

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PostPosted: Wed Jan 25, 2012 10:30 pm 
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Location: castlerock Wa,
cant be much. i have a full 2in exhaust, ram air intake and a serious p&p. the motor pulls harder than a buddys camed 1.5 civic. 7300 rev limiter when stationary. 7600 when moving.

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1990 swift GL Twincam swap
Hyundai trans swap- in progress


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PostPosted: Sat Mar 31, 2012 8:50 pm 
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Finally got to see how effed it is. VOILA!

Image

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PostPosted: Sat Mar 31, 2012 10:30 pm 
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three words. WEAK ASS DIFF. on the plus side you might be able to make a spare if the rest of the internals are oK. A new diff and case and you have a spare.

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1990 swift GL Twincam swap
Hyundai trans swap- in progress


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PostPosted: Wed May 28, 2014 4:47 pm 
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Not much carnage, but I'll say this didn't work to well above 2nd gear...

Image

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PostPosted: Thu May 29, 2014 12:39 am 
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Yep looks familar :lol: mine lasted 3 laps before the pre existing stress fracture between 2nd and 3rd gave way.


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