Mazdaspeed's weak tranny

[spoolup]

Everywhere i read says that the msp proteg is running the same transmission as the normal protege, which is why our boost is only at 6 psi. SO my question is, does anyone have any ideas on how to go about strengthening this transmission? I also know that our internals aren't the best for higher boost. So what would be a complete list of "bulletproofing" our engine, especially the block. I know the basics, stronger pistons, rings, rods, lower compression, etc. I know this is all very very expensive, but humor me please. I know someone out there knows or has had most if not all of this done. Aynways, all suggestions and comments are welcome and appreciated.

 

[Striker187]

bulletproofing the engine huh? i know some of the parts: pistons, piston rings, rods, bolts, studs, crankshaft (maybe?). that's most of the bottom end. lowering the compression would be good if you're gonna boost high. the block should be fine since it's iron. then let's see, there's camshafts, valvesprings, retainers, valveguides and valves (maybe?), cam gears for tuning.

as for the tranny, i'm not so sure. definitely clutch upgrade, prolly flywheel, stronger gears, stronger axles, upgraded driveshaft (?), maybe even upgraded lsd.

hope that helps.

 

[MP3skaterNC]

Don't slam your gears, and shift like an idiot and the tranny will be ok. Many of us boosted protege drivers have been running for over a year on the stock tranny w/ no problems. Its all about babying it.

But if you need to, cryro all the gears, billet shift forks, a better lsd, double syncro's on 1st-3rd.

 

[Black Majik MSP]

Unfortunately, the only tranny stuff available is the clutch, flywheel, & axles. For the rest, you'll have to go custom. With all of those mods, the MSP would be incredible.

 

[acidbug]

Everywhere i read says that the msp proteg is running the same transmission as the normal protege, which is why our boost is only at 6 psi. SO my question is, does anyone have any ideas on how to go about strengthening this transmission? I also know that our internals aren't the best for higher boost. So what would be a complete list of "bulletproofing" our engine, especially the block. I know the basics, stronger pistons, rings, rods, lower compression, etc. I know this is all very very expensive, but humor me please. I know someone out there knows or has had most if not all of this done. Aynways, all suggestions and comments are welcome and appreciated.

I believe the axels are a little thicker than the protege/pr5/mp3!

Chas

 

[Aricjm15]

yes the Axels are thicker on the MSP

why would you want to do anything to the crank, you guys have a steel crank, I wouldn't worry about it
when my brother blew his engine to hell the only reason we had to dump the crank was that one of the rods had welded itself to the crank, other than that it was in really nice shape, especialy since it acted like a blender with one of the other rods

 

[zmepro]

iron block = good

 

[PaulMP3]

The main problem in the MP3's is the shift forks.. The MSP has stronger forks than the MP3..
Like MP3skater said, just take it easy on it and you'll be fine

 

[ddogg777]

But if you need to, cryro all the gears, billet shift forks, a better lsd, double syncro's on 1st-3rd.

Double syncros? What is that?!

 

[MP3skaterNC]

2 syncros on the gear to help it get into gear better when you drive like an ass and slam them.

 

[ddogg777]

Where do you get double syncros? Custom?

 

[PaulMP3]

yep.. the WRX STI has triple syncros

 

[mspeedpro]

what is a double or triple syncro?

 

[spoolup]

Thanks for all that input...... i was expecting someone to be an ass about such a broad question...... but all ur input is helpin a lot.... thanks....keep it comin .... Im researching what everyone is saying as we speak

 

[spoolup]

I really want to bulletproof the block to run 18-20 psi.... thats my real goal...

 

[jaymode]

I really want to bulletproof the block to run 18-20 psi.... thats my real goal...

on a different turbo right?

the stock one loses efficiency past 16psi. T3/T4 would be a nice choice. That is going to be a lot of cash to do and may take a lot of time. I would go find a used engine in a junkyard, build it up and that way you still have a backup.

 

[Kooldino]

what is a double or triple syncro?

it's for double and triple shifting, like you should, not granny shifting.

/fast and furious

 

[zzooomm]

The tranny is the least of the worries, My stock clutch can't handle the extra horsey's. I have to upgrade the stock on enext week.

 

[acidbug]

The tranny is the least of the worries, My stock clutch can't handle the extra horsey's. I have to upgrade the stock on enext week.

Yeah..That's definetly something to do when upping the HP..The stock clutch can hold out..but for how long is anyone's guess..

I am at 6psi..w/ a stock clutch..and it occasionally slips...

Chas:mad:

 

[Geo212]

Yeah..That's definetly something to do when upping the HP..The stock clutch can hold out..but for how long is anyone's guess..

I am at 6psi..w/ a stock clutch..and it occasionally slips...

Chas:mad:

You can tell when your clutch is sliping when the engine revs increase but the speed stays the same? O, upgraded radiator that runs the width of the opening, instead of just one half like the stock radiator.