Loxxrider's 200 20v Revver: See you on "The Project Pad"

[Justin517]

I wish someone made 1-5 straight cut gears and left 6 helical. You can get gears for a T5 like that. All the fun when you beat on it of straight cut, but not the noise during highway cruise.

I have a box here built by Scott that is straight cut 1-2 and helical for the rest

I was going to say... I thought that was possible... can't you also get dog-engagement on 1 and 2?

seems like the perfect combo for a street driven car... brutal 1 and 2 for racing reliability... deal with it... but street friendly 3-6.

[loxxrider]

I think I'd want third to be straight cut as well. When do you ever want to granny shift into 3rd? In this car, first will be positively useless except on a launch, so second and third are going to be my monster gears. 4th too, but that is just asking for trouble on the street. In fact, 3rd at 10k is go-to-jail speeds. Oh well.

[Hank]

when gears do start to shear, 3rd gear is the problematic one.

1-2 dogged would be a step in the right direction, as you could make 1st taller to remedy the gap on higher rpm motors.

[loxxrider]

So you are saying third is a good one to get in straight-cut. I was going to mention that too... 1st would be nice to have taller... maybe even second for a lag-monster like I'm building.

[HT Motorsport]

Marc knows all this stuff Chris as he organized the trans I have here for a joint project we are working on.

The problem with 3rd, is that if you go straight cut on third I think you have the be SC on 4th as well. Disclaimer, I dont really know but thats my guess.

[loxxrider]

Hmm, well if I have 5 and 6 quiet, then that isn't so bad... ugh I think we'll try a regular one first then go with a custom gear set *when* it shits the bed. I'm spending plenty of dough for the time being!

[123quattro]

Just some general info, straight cut gears are weaker than helical cut. You have less engaged surface area for a given gear size. The benefit is the dog synchro mechanism. That mechanism can also be made smaller alllowing the gear to made thicker and regain some strength. I think you would need to run them in pairs to save having to make some really custom parts.

[loxxrider]

OK just a side note... I think I'm going to be looking hard at the Borg S400SX3-75 and 76.

[OOOOGT]

Again though, they put pumps and coolers in to cool the diff, not the sliders/shifting parts that fail. If it were chucking bearings and gauling gears, I would look at heat. They are just heavy cluncky components built to put up with a bunch of power on the 'bahn, but not shifting quickly.

Ah, yeah you're right. Coolers were pretty much only used when the trans was equipped with a clutch pack LSD (except my trans :( )

[Hank]

Yes, 1-2 are married gears as are 3-4. 5-6 can be swapped in and out at will. If you are stripping 3rd in a helical formats, strait cuts will struggle. Lots less surface area and root area on a dog of similar size/ratio.

Guys stripping the 3rd are running around 700wtq in tial 770 b5 s4 configurations. I think Janis did as well with the crow a couple years ago. It will be interesting to see if Haydn has a problem with the LS-TT

[my2000apb]

mmmmm 700wtq

[123quattro]

It will be interesting to see if Haydn has a problem with the LS-TT

It shouldn't be a problem for him. The Camaro I built put down 770 wtq at 8 psi of boost.

[Hank]

It shouldn't? That is more torque than any audi app I have ever heard of with an 01e

[my2000apb]

It shouldn't? That is more torque than any audi app I have ever heard of with an 01e

thats how i read it first too hahaha

the tq output shouldnt be hard to do for H, keeping it together via an o1e will be different

[123quattro]

I meant it shouldn't be a problem for him to make more than enough torque to explode his 01E. It's easy to make 1000 ft-lbs with a boosted LS engine.

[death 4kqt]

i cant quite imaging what 1000ft/lbs of torque feels like

[chaloux]

A real party

[AudiSport4000]

death 4kqt wrote:[/quote]

i cant quite imaging what 1000ft/lbs of torque feels like[/quote]

It feels like wheelspin and broken parts I have driven only a few cars with over 600WTQ, one of which was a 69 Camaro on track with a sequential dogged race trans with 345 R comps on the rear, that car is the only one I have ever been scared of, it would literally wheelspin in any gear at any speed.

(Sorry for instigating the threadjack Chris)

lets get back to High RPM chat, driveshafts are fuses

[AudiSport4000]

death 4kqt wrote:[/quote]

i cant quite imaging what 1000ft/lbs of torque feels like[/quote]

I cant imagine building, finding the money for, and actually driving one

I love power but I want to be able to drive something more than I work on it, which is why I drive a lowly 90q with an NG motor 8)

[loxxrider]

I don't mind the threadjack as long as you guys don't mind the huge length of this thread lol. One day I'll make a comprehensive thread summing all of this up.

Anyway, it really doesn't cost all that much money to make that kind of power/torque... it just takes a big cube motor with some big forced induction. I bet I could build something that makes that much power and torque for less than this engine is going to cost me in the end. This engine platform just isn't conducive $$/hp-wise after about 700 chp the way a big V8 is. However, I could care less!

Anyone have any more suggestions other than HTA4205, GTX4202 and BW S400SX3-75? I don't think I'm willing to deal with Comp by the way...

by the way, does anyone want to buy an HX52 just rebuilt in the past 20 miles with v-band outlet already machined for 4" dp and flange modified to fit any T4 manifold? It is a nice 67mm (billet wheel) turbo! Make an offer I can't refuse 8)

[busmn280]

Chris,

What are the reasons to swap the 5 speed out for a 6 speed that seems to have so many reliability issues? After reading the comparisons of the gear ratios, it sounds like the ratios of the 5 speed are better spaced especially for a high rpm/boost application.

[loxxrider]

The reason is that the 01E is a stronger transmission when they are problem-free. I don't know if anyone knows about the failure rates on Euro-TDI 6-speed 01Es... might be different than the ones used in the B5 S4? Anyway, the main reason is that they are stronger. In general, people seem to blow 016s up around 500 whp. There are lots of 01Es around making more than 800 whp. I might call up Chris Green and see what he's had to do with his to keep it together in his 900whp VR6T S4. Guys in Europe seem to do OK on them too, even in drag racing conditions, although they do blow them up from time to time. It seems that noone there has found anything better though other than going to RWD which I do not want to do.

[Hank]

The TDI boxes help on galling the first and second gears with the flexible main shaft, but they still have hte problematic collars. People fubar even the new updated collars, but the rate is substantially less.

I haven't messed up a 1-2 collar in over 2 years though. I went through 3 really quickly when I first went 01e, but I just kindof learned that 1-2 has to be done with a lot of care. Having good syncros obviously helps a lot. Hopefully the JHM syncros pan out to be really grabby to get them to speed match better.

[chaloux]

It's too bad really, comp makes some very nice stuff. If you deal with them directly and remind them every two days of what exactly they're giving you, you should be okay.

LOL

Yeah, sad. They need a new sales team or whatever connects the engineers/fabricators and the customers.

[chaloux]

Perhaps go through kai @krb, he knows his shit and can get you all the funky New stuff like straight through exhaust wheels