roller rockers vs valve cover clearance - Vintage Mustang Forums
Vintage Mustang Forum
HomeForumGalleryClassifiedsAbout UsAdvertiseContact Us
» Auto Insurance
» Featured Product
Go Back   Vintage Mustang Forums > General Discussion > Vintage Mustang Forum
Vintage-Mustang.com is the premier Ford Mustang Forum on the internet. Registered Users do not see the above ads.
Reply
 
Thread Tools
Old 10-17-2001, 03:02 PM   #1 (permalink)
Guest
 
Posts: n/a
Default

I have heard that roller rockers do not fit under the cobra aluminum valve covers. Is it a design issue or a brand issue? IE, is it only certain brands of roller rockers that don't fit? Also, I have seen some stuff about the baffles in the aluminum valve covers being removed and replaced with a custom bent piece of sheet metal. Is this possible, ie, does the valve cover itself clear the rollers and the baffle doesn't?

BTW, I'm talking small block, 289/302 here.

Any info would be appreciated, thanks
  Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Old 10-17-2001, 03:04 PM   #2 (permalink)
Supporting Member
Senior Member
 
kketell's Avatar
 
Join Date: May 2001
Location: California (Northern)
Posts: 11,683
Send a message via ICQ to kketell Send a message via AIM to kketell Send a message via MSN to kketell Send a message via Yahoo to kketell
Default

I can't speak to the aluminum covers, but the stock height steel ones worked with my Comp Cams rollers after taking a hole-saw to the baffles to clear the adjuster.

Cobranda has tall Cobra covers for rollers for a nominal fee.
__________________
-Kent-

http://www.kkpony.com/images/vmfsig-402b.jpg
http://forums.vintage-mustang.com/me...nyengine-1.jpg
It's your car, dammit.
Do what makes you happy
kketell is offline   Reply With Quote Quick reply to this message
Old 10-17-2001, 03:08 PM   #3 (permalink)
Senior Member
 
Join Date: Aug 2000
Location: Boise, Idaho
Posts: 1,747
Default

There is VERY LITTLE clearance, but I have a set of Crane 1.7 Rollers and they do clear the cobra valve covers. I thought I was going to have a problem, but didn't. I didn't bend the metal splash plate with a hammer to get a little extra clearance - I don't know if this was needed or not.
Some people do have problems, but you can get thicker valve cover gaskets (felpro's) that are about double the thickness of standard gaskets to get you some extra space.
__________________
YOU all laugh because I'm different, I laugh cause you're all the same
GolfBoy is offline   Reply With Quote Quick reply to this message
Old 10-17-2001, 03:16 PM   #4 (permalink)
Guest
 
Posts: n/a
Default

I had heard the taller covers were available but heard they looked cheesy. I'd rather go with drilling or bending the baffle if the original type will clear.
  Reply With Quote Quick reply to this message
Old 10-17-2001, 03:16 PM   #5 (permalink)
Guest
 
Posts: n/a
Default

BTW, thanks for the info.
  Reply With Quote Quick reply to this message
Old 10-17-2001, 03:37 PM   #6 (permalink)
Senior Member
 
Join Date: Jul 2000
Location: Denver CO USA
Posts: 5,293
Send a message via ICQ to dickson
Default

IIRC Branda also sells an aluminum spacer that fits between the VC and head to allow additional room for clearance of rollers. Good luck. Dickson
__________________
http://img.villagephotos.com/p/2003-...2-0202_IMG.JPG


"Beer is proof that God loves us." Benjamin Franklin
dickson is offline   Reply With Quote Quick reply to this message
Old 10-17-2001, 03:44 PM   #7 (permalink)
Senior Member
 
66benchcoupe's Avatar
 
Join Date: Jul 2000
Location: Deer Park, CA
Posts: 3,514
Default

I bought the tall COBRA covers from Branda and I think they look pretty good, you can see them on my web page (I painted mine and sanded the fins). The baffles are close but I didn't have to modify them. I think if I had gone with a different roller rocker (I went with the billet TFS rockers) I could've used stock sized covers. The Comp Cams Pro Magnums look like they'd fit without the tall covers.
__________________
http://pic20.picturetrail.com/VOL160...3/69706405.jpg
1966 Coupe
1991 GT
66benchcoupe is offline   Reply With Quote Quick reply to this message
Old 10-17-2001, 03:48 PM   #8 (permalink)
Senior Member
 
Join Date: Mar 2001
Location: LaPlace,La.
Posts: 159
Default

Branda also sells the tall cobra valve covers but they are around $180. I have the regular cobra covers with the baffel cut out but it sucks the oil out. Check the location of the hole in relation to the rocker arm and you'll see what I mean.
wubbasnake is offline   Reply With Quote Quick reply to this message
Old 10-17-2001, 04:16 PM   #9 (permalink)
Senior Member
 
roadracer's Avatar
 
Join Date: Mar 2001
Location: Humble, Tx (we say
Posts: 3,894
Default

Here is a link that probably addresses the issue you.
__________________
"If you're under control you're not going fast enough"
Parnelli Jones

Visit Roadracers Corner
roadracer is offline   Reply With Quote Quick reply to this message
Old 10-17-2001, 04:47 PM   #10 (permalink)
Guest
 
Posts: n/a
Default

Here's an article concerning the rocker/valve cover clearance issues. It also discusses the baffle openings.
  Reply With Quote Quick reply to this message
Old 10-17-2001, 04:47 PM   #11 (permalink)
Guest
 
Posts: n/a
Default

Here's an article concerning the rocker/valve cover clearance issues. It also discusses the baffle openings.
http://www.mustangworks.com/articles...StandTall.html
  Reply With Quote Quick reply to this message
Old 10-17-2001, 06:13 PM   #12 (permalink)
Senior Member
 
jimbo's Avatar
 
Join Date: Aug 2001
Location: portland, oregon
Posts: 832
Send a message via ICQ to jimbo
Default

I have roller rockers and open letter cobra cast aluminum
(old) they fit fine with cork gaskets and some baffle adjustment.
jimbo
__________________
MCA # 50000
http://home.comcast.net/~eljimb0/webphoto/FDS.jpg
jimbo is offline   Reply With Quote Quick reply to this message
Old 10-17-2001, 07:20 PM   #13 (permalink)
Senior Member
 
RagTop's Avatar
 
Join Date: Mar 2001
Location: Lincoln, CA
Posts: 4,842
Default

I have a 302 & a 351W with roller rockers. The 302 has Ford Motorsport low profile rockers and the 351W has CompCams roller tip rockers. Both easily clear the chrome Motorsport valve covers with no bending or other modifications.
__________________
I couldn't repair your brakes, so I made your horn louder.

69 Vert
69 SportsRoof
00 Camaro Z28
RagTop is offline   Reply With Quote Quick reply to this message
Old 10-17-2001, 07:21 PM   #14 (permalink)
Art
Senior Member
 
Join Date: Mar 2001
Posts: 7,671
Default

The experience I've had with roller rockers, it's not the rockers, but the tall poly-locks (adjusting nuts) that hit.
Art is offline   Reply With Quote Quick reply to this message
Sponsored Links
Advertisement
 
Reply

Quick Reply
Message:
Options

Register Now

In order to be able to post messages on the Vintage Mustang Forums forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.
Password:
Confirm Password:
Email Address
Please enter a valid email address for yourself.
Email Address:

Log-in

Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.



Thread Tools

Posting Rules
You may post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are Off


Powered by vBadvanced CMPS v3.2.2

All times are GMT -4. The time now is 08:53 PM.


Powered by vBulletin® Copyright ©2000 - 2014, Jelsoft Enterprises Ltd.
SEO by vBSEO 3.3.2 ©2009, Crawlability, Inc.