Torque specs for cams?

[dardoonk]

Thank you bud. I am just so tired at this point.
............ This resurrection is starting to taking to take a toll on my heart.

Hang in there, I just spent a year tearing one apart & putting it back together. There were many, many days I didn't even want to walk past the dang thing....
Believe me, the day you look at it and say "Okay, I'm done" and you can step back and enjoy your hard work, it will all be worthwhile.

Then you can figure out what your going to do next.... I don't have 50 miles on mine yet and I'm already planning another motor! \\/

[chef1366]

Sorry no manual yet. Paypal sent you a tracking number, right?
If you need any head parts let me know. I have springs, keepers, cam cover bolts, rockers ect......
I also have some extra tachs. Probably not the right one though.

[cloudbreakmd]

Thank you Chef. You guys are right, it will get better (I hope 8-[).

In the meantime it's nice to have an understanding ear and support. Thank you.

[cloudbreakmd]

Got the broken bolt out... But now another one broke. ](*,)

[cloudbreakmd]

Also keep in mind that each cam hold down usually has a letter that corresponds to the same letter on the head to insure correct placement. Also special bolts are used to hold these down.......make sure you use them.

Mark,
I meant to ask you... What makes the bolts unique?

[TheCafeKid]

Mark,
I meant to ask you... What makes the bolts unique?

Its not neccessarily the bolts i dont think so much as perhaps the wear on the cam journal. If one side or one cam wears differently, and you use the hold down from a different spot, it could cause the journal to wear prematurely or incorrectly. Thats my guess.

[mark]

Mark,
I meant to ask you... What makes the bolts unique?

Again, this is from my 850 service manual.

"Caution:

The camshaft holder bolts are made of a special material and much superior in strength compared with other types of high strength bolts.

Take special care not to use other type bolts instead of these special bolts. To identify these bolts, each of them has a figure "9" on its head."

I'm assuming this also applies in your case, given the nature of your original post I was trying to help you avoid possible trouble.

I'm not sure what makes the bolts unique, only that they are, and the manual takes care to make the specific point that you should only use those bolts for this application.

Sorry, you're having trouble, at least you haven't stripped 3 of the holes out like I did.

[cloudbreakmd]

Next problem... Got all 3 (yes 3 broke) of the bolts out and replaced them. But the next problem is that every valve cover gasket I have bought (2 in fact do not fit the bike). Also is it okay to reuse the cam holder bolts (the non broken ones anyway)?

My valve cover has 12 holes total but all the ones I bought including this one have 20 holes:
http://cgi.ebay.com/ebaymotors/ws/eB...195132365&rd=1


HELP!!!!????

[cloudbreakmd]

Sighs... Just check the microfiche... 1981 cylinder head design from the 750E?
http://cgi.ebay.com/ebaymotors/New-Vesrah-Suzuki-Valve-Cover-Gasket-GS750_W0QQcmdZViewItemQQ_trksidZp1638Q2em118QQcate goryZ35595QQihZ005QQitemZ150191346228QQrdZ1QQsspag enameZWD1V

[TheCafeKid]

only 12?? Even my 77 had 16...weird! Check evilbay..see lots of valve cover gaskets on there..OR better yet, Check Z1...they have them all as far as ive investigated.

[dardoonk]

Mark,
I meant to ask you... What makes the bolts unique?

Cloud, bolts are graded for different requirements. Basically, it is how much force a bolt is expected to withstand. Measured in psi, a standard grade 1 bolt (this is a plain bolt with no marking on the head) is going to have a minimum yield strength of about 40,000psi; depending on whether it was produced using a low or medium carbon steel. The strength of a grade 5 bolt (three dashes on the head) has a strength of 92,000psi. A grade 7 bolt (5 dashes on the head) meets a minimum of 115,000psi and a grade 9 bolt is about 140,000psi (I think).

In layman's terms, the higher the yeild strength, the stronger the bolt. A grade 1 bolt is fine to hold you fender on, but you don't want to use it under a high stress area, such as you cams or brake disks. Incedently, your brake disks should all have a #7 stamped on them. It's a more critical component and endures higher stress than the fender. Likewise, you cam bolts require a grade 9 because they are under tremendous stress due to extreme heat cycles and the force required to keep the cams in place. If the head broke off one of these bolts, your not going to see it in time to save your motor. This bolt has to be very strong and this strength also allows it to resist deformation. Using a weaker bolt in this location could lead to increased wear on the cam and caps as the bolt deforms and allows the cap to loosen.

Hope this helps --
Kurt

[cloudbreakmd]

only 12?? Even my 77 had 16...weird! Check evilbay..see lots of valve cover gaskets on there..OR better yet, Check Z1...they have them all as far as ive investigated.

Sorry I meant 16

[TheCafeKid]

Yeah and ill take mine back too...lmao i meant 8...you need the valve cover for the TSCC motor. Z1 i believe will have it. I had to hunt for mine on there, as i think they actually list it for the 850 or something, but its the one.

[TheCafeKid]

This one look like yours??

http://www.z1enterprises.com/detail.aspx?ID=2690

[cloudbreakmd]

Yep that's it Cafe. I found one on Ebay last night. I just have to order all new cam bolts and new valve cover bolts. I want to make sure she is put together right.