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David, I have bolt-on valve covers and have NEVER experienced leaks. 19ft-lbs is the proper torque. Use the stock, cork gaskets and not the neoprene ones. I found that [when I had stock valve covers] the cork ones work best. Also, there should be a rubber O-ring that fits between the cover and the bolt head. I have my front disc rotors cross-drilled and haven't had any problems with the setup. I don't have any info with me now but when I get home I'll pull the receipt and let you know who to call (it's in California). I wish I had spoked rims so I could show 'em off, they look cool! Don't worry about the rumors of cross-drilled rotors cracking -- only if you do LOTS of HEAVY braking, like in autocross, will this possibility occur. For everyday driving (and I drive like I'm in an autocross :) there won't be any problems. And don't forget, they're better in wet weather, too. Toby Erkson air_cooled_nut@pobox.com '72 VW Squareback 1.6L bored and stroked to 2.0L '75 Porsche 914 stock 1.8L for sale ______________________________ Reply Separator _________________________________ Subject: asnwers, please! Author: type-3-errors@umich.edu at SMTPGATE Date: 3/24/97 8:13 AM I have a couple of questions, and I know someone has the answers. Here goes: 1. Just had my 041 heads redone (valve job, new guides, etc.) I bolted them back on, but used bolt-on aluminum valve covers. There were no instructions with them (Bugpack), so I guessed at a proper torque- 18 ft-lbs, like a 13mm bolt- and they leak like sieves. I overtorqed them to about 20-22 ft-lbs and the bolts bottomed out on the nuts under the covers. The engine has good compression, could I be getting blow by? The leaking seems to be as bad on both sides. I was previously running the stock stamped covers with wire bales. I would like to think that the heads are not the problem. Any suggestions? 2. Need to re-synch my 34 ICT Webers after cleaning them up, and bolting on the heads, but I don't have the instructions for the UNI-SYN sychronizer tool, they got lost in the shuffle of a recent move. Any body have a brief explaination for me-I would appreciate it. 3.Does any one have any experiences with drilling out front disc calipers for ventilation? I just got a new pair of German rotors from Rocky Mountain Motorworks, they're probably the last ones I'll get for my Notch, and I was wondering if having them drilled out would be worth while. I also don't want to ruin an expensive set of rotors, but the Type III discs do tend to fade out with heavy braking. Anybody out there done this before? Thanks in advance. David Walters '73 Notch '92 HD Sportster