gundee Posted April 10, 2016 Share #1 Posted April 10, 2016 Neither of my cyl. heads have washers under the cam tower bolts as shown below. Noticed while assembling mine. Do any of your cyl. heads have these washers? Link to comment https://www.classiczcars.com/topic/55244-cam-tower-washers/ Share on other sites More sharing options...
rossiz Posted April 10, 2016 Share #2 Posted April 10, 2016 absolutely. aluminum is soft and will gall if you crank a fastener head down into it, which can give false torque readings as well as not properly distribute the load to an effective area of material. does this mean your engine will explode? not necessarily... but i'd use washers for sure - no point risking something so simple. Link to comment https://www.classiczcars.com/topic/55244-cam-tower-washers/#findComment-492264 Share on other sites More sharing options...
siteunseen Posted April 10, 2016 Share #3 Posted April 10, 2016 Mine have #21 and they're flat washers I believe. Link to comment https://www.classiczcars.com/topic/55244-cam-tower-washers/#findComment-492276 Share on other sites More sharing options...
siteunseen Posted April 10, 2016 Share #4 Posted April 10, 2016 4 hours ago, Lumens said: Neither of my cyl. heads have washers under the cam tower bolts as shown below. Noticed while assembling mine. Do any of your cyl. heads have these washers? You are right, mine doesn't have a separate washer either. Sorry about that. The bolts have flats under the head on these I can put my hands on. I'll check my other heads tomorrow. Link to comment https://www.classiczcars.com/topic/55244-cam-tower-washers/#findComment-492299 Share on other sites More sharing options...
madkaw Posted April 10, 2016 Share #5 Posted April 10, 2016 I've never seen washers there either. Link to comment https://www.classiczcars.com/topic/55244-cam-tower-washers/#findComment-492307 Share on other sites More sharing options...
gundee Posted April 10, 2016 Author Share #6 Posted April 10, 2016 What I thought too. The bolts do have a flat on the bolt head as if it had a washer. I am going to install the new cam and torque down as is. 1 Link to comment https://www.classiczcars.com/topic/55244-cam-tower-washers/#findComment-492316 Share on other sites More sharing options...
zKars Posted April 11, 2016 Share #7 Posted April 11, 2016 No washers ever seen, even on a couple of early E31 heads. Part 21 is also marked as the head bolt washers. Head bolts are 10mm, cam tower bolts are 8, so no way they would work. Must be a drawing error. Link to comment https://www.classiczcars.com/topic/55244-cam-tower-washers/#findComment-492319 Share on other sites More sharing options...
rossiz Posted April 11, 2016 Share #8 Posted April 11, 2016 should have read the OP more carefully - i thought he was asking if he should use washers that were called out. it's been a while since i removed/replaced my cam towers and while i remember what the bearing surface on the towers look like (i spent some time cleaning 'em) i forgot what the bolts looked like. at any rate, the bolt configuration is similar to a washer in that you wind up with a smooth bearing surface w/out the points of the hex cutting into the aluminum... Link to comment https://www.classiczcars.com/topic/55244-cam-tower-washers/#findComment-492366 Share on other sites More sharing options...
Wilbur
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