Author Topic: Cr750 valve cover mod?  (Read 265 times)

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Offline CalleF

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Cr750 valve cover mod?
« on: January 15, 2019, 12:26:31 pm »
I am in the process of building a classic race bike on a cb750.
Want to do the valve cover mod whit studs to support the cam holders. Read a thread about it, how you locate the right spot to drill the cover but cant remember the trick  and dont find the tread anymore. Any info on best way to do it.
Sorry for the bad English.

Offline Tintop

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Re: Cr750 valve cover mod?
« Reply #1 on: January 15, 2019, 12:32:16 pm »
CycleX supplies covers already modified, contact Kenny.
1977 CB550/4 Cafe - Speed Warrior / BOTM 03/11
1980 CB750F (project)
Whittaker GBF Vintage Racing Sidecar (XS750 power) - ITG / 151's / CMR Racing Products (SOLD)
1976 CB400 SS - stock / BOTM 04/11 (SOLD)
1973 CB750 K - basket case (SOLD)
77 CB550 Cafe build
550/750 Filter Thread
Sidecar Rebuild Thread

Offline slikwilli420

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Re: Cr750 valve cover mod?
« Reply #2 on: January 15, 2019, 12:42:51 pm »
Best way to do it yourself (credit to 754 here) is to use a mill. Bolt a head down as well as the cam towers. Once you line up with the casting dimples on the cam towers, add the cam cover and bolt down. Drill that hole to your desired size, then move on. Here is the cover Im slowly working on.

All you gotta do is do what you gotta do.

Vintage Speed Parts Mashup: http://forums.sohc4.net/index.php?topic=133638.0
Rickman CR Parts Kit Refresh: http://forums.sohc4.net/index.php/topic,154837.0.html
AHRMA CB750 Racer: http://forums.sohc4.net/index.php/topic,158461.0.html
AHRMA Superbike Heavyweight Racer: http://forums.sohc4.net/index.php/topic,173120.0.html
'76F CB750 Patina Redemption: http://forums.sohc4.net/index.php/topic,174871.0.html

Offline Tracksnblades1

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Re: Cr750 valve cover mod?
« Reply #3 on: January 15, 2019, 10:26:28 pm »
Medyo Bastos sold me a very well modified one he had under his bed. 😎
He might have another, if you're not wanting to forego the mod.

« Last Edit: January 15, 2019, 10:30:31 pm by Tracksnblades1 »
Age Quod Agis

Offline CalleF

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Re: Cr750 valve cover mod?
« Reply #4 on: January 15, 2019, 11:40:38 pm »
Thanks, that's the info I was looking for. Time to make me one.
Post a pic if i remember when it's finished.