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It seems like every part of this car has a stronger upgrade for it aside from the manual transmission. I thought by now there would a PPG set or something out for this transmission.

Aside from swapping it out for a stronger one that includes custom fab work and more headache than its worth, is there a way to make this transmission handle a decent amount of power?

The crawford build is holding up to 450hp, so I'd say it isnt doing too bad
just my 2cents

Quote:

Originally Posted by boxer 2.5 (Post 1215277)

The crawford build is holding up to 450hp, so I'd say it isnt doing too bad
just my 2cents

the crawford build blew up twice, and wrecked a mclearn :). The Tranny isnt rated for high hp, and has been a hit or miss with people at high HP

Evasive is working on a replacement trans. Don't know details though.

I have seen very few failures, so I don't know where this view is coming from. What do you consider "a decent amount of power"? Have you been talking to Don & John?

The fundamental issue with "upgrading" a transmission internally is, the real limit is found when the case starts to deform from the pressure of the gears trying to push eachother away.

Quote:

Originally Posted by King Tut (Post 1215348)

I have seen very few failures, so I don't know where this view is coming from. What do you consider "a decent amount of power"? Have you been talking to Don & John?

Yeah Don has a tranny swap available but im more specificly interested in making the stock unit stronger, if at all possible.

Quote:

Originally Posted by SmsAlSuwaidi (Post 1215319)

the crawford build blew up twice, and got wrecked by a mclaren :). The Tranny isnt rated for high hp, and has been a hit or miss with people at high HP

fixed your post.

Quote:

Originally Posted by Dezoris (Post 1215344)

Evasive is working on a replacement trans. Don't know details though.

Evasive Motorsports? Talked to them and they have no plans on doing any replacements.

Quote:

Originally Posted by SkullWorks (Post 1215360)

The fundamental issue with "upgrading" a transmission internally is, the real limit is found when the case starts to deform from the pressure of the gears trying to push eachother away.

http://forums.nasioc.com/forums/show....php?t=2395474

This sort of thing is offered for the subaru 5speed.

Quote:

Moore Performance BlastPlates™
Retail price: $400
Group-Buy Price: $350 (10) $325 (15) $300 (20+)
Quantity needed to meet GB price: 3

Have a Subaru 5-speed manual transmission, and can’t seem to sleep well after a night full of Stage 3 highway pulls? Sleep better, and help those poor gears out, with Moore Performance’s BlastPlates™: The quick and effective way to stave off that pesky case flex.Using both heavy case reinforcement and a higher clamping load, The Moore BlastPlate™ kit is wise insurance for those Subaru owners trying to get the most out of their 5-speed gearbox. Heavy steel plate is jigged, then TIG-welded for ultimate strength and excellent fitment. Gloss-black powdercoating makes ‘em look pretty. And last but not least, the included class 10.9 hardware ensures that your case can be torque’d up to our race-proven specs!

https://lh6.googleusercontent.com/-w...%2520Sides.jpg

https://lh6.googleusercontent.com/-L...0/DSC_5980.JPG

mine holds up well i changed the fluid and added the stiff trans mount :) still going

Adding a pump and oil cooler will go a long ways towards your transmission holding up under higher loads.

When I was researching transaxles for a race car I wanted to build, I found Porsche transaxles rated for 180hp were magically uprated to 219hp with the only difference being an oil cooler.

A simple, inexpensive setup could use tapped filler and drain plugs with a pump. More elaborate setups have internal spray bars and other stuff.

Bad juju happens when things gets hot.

Quote:

Originally Posted by SmsAlSuwaidi (Post 1215319)

the crawford build blew up twice, and wrecked a mclearn :). The Tranny isnt rated for high hp, and has been a hit or miss with people at high HP

link to it blowing? Thanks! :thumbsup:

Quote:

Originally Posted by mike the snake (Post 1215906)

Yeah it does. When we flat bottom our STi race car the transmission always mysteriously fails so yes cooler gear oil does improve longevity. I'm not sure it miraculously increases it's power capability for something like drag racing or dyno work however.