Hello I am new to this fourm.

I am looking to do a build-up on a b5 1.8 and hope to break 360hp+ but would like to know from people out there who who are making this kind of power+ what kind of drive-train parts needed up-graded.

Are there performance half-shafts out there casue I cant seem to find any and I don't know how long the toothpick ones on the rear will hold up to that kind of power. Not to say if the center diff gets swaped and I am sending even more of the power to the rear.

Thanks

 

Well you're definitely gonna have to upgrade the clutch but i think that goes without saying. As for the rest of the drive train, Mike Hood pushed 600+ whp through the stock Quattro drivetrain with no problems at all. I'm pretty sure now he's up over 800 whp and has been breaking transmissions

 

and those tooth picks are holding up. wow. Ya I got a clutch plan in place I was more worried from the trans out, front diff, half shafts, rear diff, Well if anyone else could let me know of other week spots that would be great.
I used to have a 97 with a carbon drive shaft, I know that would help.

 

Yeah i dunno what else he's got goin on in that thing, i'm hopin he'll chime in here and lay down some knowledge lol

 

when you start making serious power, you want your halfshafts to be the weak spot. That way you break them instead of way more expensive stuff. We have a C5 vette at my shop turning 9.2's and they always carry plenty of extra halfshafts to the track with them. Easy to swap out and cheap comparatively.

 

thats a good point but I don't wanting to be breaking things all the time if I have other options.

 

i know that mike has never broke a single axle. he's putting down over 600 at the wheels. don't worry about the drivetrain besides the clutch. talk to him, he owns ringer racing.

also he take it to the strip whenever he has a working tranny lol. obviously he beats the crap out of it but the thing holds up

 

Mine did not let got till I was at over 600whp, but I know people that have broken the stock A4 1.8t transmission making 350whp.

Dont worry about the axles, the 1.8t doesn't make enough tq to break them like the 2.7t guys do. The most you might do is break the CV joint, but most of the time this will happen if you allow the ABS to launch up one of the wheels while launching the car hard. In 10 years of drag racing I have only broken 1 CV joint and 3 of my axles on the car have been on it since 2000 and that is with tons of drag racing with BFG drag radials and a few hard launches with the new Hoosier DR's.

After getting to 600whp with Hoosier drag radials and running a twin disk clutch I went thru 3 transmissions in 2 months. This is because the clutch just allows too much tq shock to hit the gears with the twin disk, but this can be fixed using a Flow control valve that basically allows the clutch to be engaged slower as you release the clutch pedal.

My OEM transmission lasted 9 years with many trips to the drag strip.


Watch the video in my sig. That was done with nothing but stock driveline and a custom 6 puck clutch kit making around 570whp on the BFG DR's.

 

audi really needs to get a huge plaque for their manual tranny lol

 

nice thanks. You all seem to have some good information. I will be picking your brain off and on for the next few months. I will post pic's as it happen's too.