Pagoda SL Group
W113 Pagoda SL Group => Drive train, fuel, suspension, steering & brakes => Topic started by: Ron500E on May 01, 2016, 06:35:07
-
Any thoughts on using Canyon guides. It seems the Genuine MB items are NLA in the std. size.
Or... is there a better alternative?
There seems to be a big price difference between the genuine MB items at around $30 and the Canyon at around $8. I don't mind spending the extra money for better quality, but is the quality really better?
Thanks for any guidance.
Progress is sloooow but somewhat steady (somewhat....)
Thanks
Ron
-
I got my valve guides off AutohouseAZ. I m happy with them. I have no association with this company but find that there prices are very reasonable.
-
When I had my head reworked a few months back, A machine shop that specializes in MB used Canyon. No problems. But has only been a couple hundred miles. They also knurled the outside circumference of the guides tops. This helps the valve seals to stay put and not pop off down the road.
-
230SL valve guides are different than the 250 and 280. As I recall, the 230's are smooth while 250's and 280's have a small groove that helps to hold the valve stem seal on to the valve guide. The 230SL seal will come off unless it's installed dry.
-
It's been awhile but I seem to recall that there was a change in valve guides where there was a step added to the guide to keep it from sinking into the head. I am sure someone more knowledgeable will chime in here but I thought I would mention it. If that is the case you might want to make sure the Canyon guides have it.
-
Realize that the new valve guide materials (silicon bronze) materials is superior to original materials like the copper and brass guides used previously. I have used Canyon Valve guides, which are silicone bronze, also with good results. Sizing (OD)is the difficult decision to make. Too small a diameter and they may come loose. Too tight and the guide may be damaged during installing . Intermediate repair sizes are offered by some manufactures, which is slightly oversize to make a good fit. They are not a full oversize.
My advice, use a good experienced machine shop. Supply them with all the Technical specifications and installation process. So they can make an experienced judgment call on sizes to use after measuring and inspecting the head. I even loan the machine shop my special factory valve guide installation tools to use for the work.
-
Thanks Everyone.
Joe, what is the number of your guide installation tool.
I never need an excuse to add one more 589 to the collection....
Thanks,
Ron