The Cal-look Lounge
Welcome, Guest. Please login or register.
Did you miss your activation email?
May 26, 2024, 06:28:01 am

Login with username, password and session length
Thank you for your support!
Search:     Advanced search
350790 Posts in 28592 Topics by 6824 Members
Latest Member: 63calLQQK
* Home This Year's European Top 20 lists All Time European Top 20 lists Search Login Register
+  The Cal-look Lounge
|-+  Cal-look/High Performance
| |-+  Pure racing
| | |-+  getting CB H beams apart
« previous next »
Pages: [1] Print
Author Topic: getting CB H beams apart  (Read 2805 times)
Jonny Grigg
Full Member
***
Posts: 232



« on: July 18, 2009, 18:11:40 pm »

These days I am not embarrassed about asking dumb questions.... maybe I should be  Roll Eyes

Anyway, it has been a while since I have built an engine, and the last one I did I don't remember my H beams being such a bitch to get apart. These are fresh out of the box and the 5/16" bolts were done up really tight- once I shifted them I cannot get the bottom cap off. Any hints and tricks? i don't want to brutalise them.

thanks

J.  Smiley
Logged

No Compromise. O/FF111
Peter
Hero Member
*****
Posts: 1301



« Reply #1 on: July 18, 2009, 18:25:24 pm »

i unscrew the bolts a bit and tap them slightly with a hammer with a small amount per time...
Logged
stealth67vw
Hero Member
*****
Posts: 2261



« Reply #2 on: July 18, 2009, 18:34:51 pm »

i unscrew the bolts a bit and tap them slightly with a hammer with a small amount per time...
That's exactly how I get mine apart.
Logged

John Bates
JB Machining Services
1967 street bug 2020lbs w/driver
12.34 @ 108 mph 1/4
7.76 @ 89mph 1/8
Jonny Grigg
Full Member
***
Posts: 232



« Reply #3 on: July 18, 2009, 19:32:21 pm »

Thanks guys, I was just a bit conerned about doing that in case it damages the threads.

 Smiley
Logged

No Compromise. O/FF111
stealth67vw
Hero Member
*****
Posts: 2261



« Reply #4 on: July 18, 2009, 20:30:25 pm »

You only back off the bolts 2 or 3 threads and tap the bolts enough to break the cap loose. Any more and you could possibly damage the threads in the cap or the bolts. You won't need a 5lb sledge hammer, a small dead blow or small ball peen hammer is plenty to do the job without damage.
Logged

John Bates
JB Machining Services
1967 street bug 2020lbs w/driver
12.34 @ 108 mph 1/4
7.76 @ 89mph 1/8
Jim Ratto
Hero Member
*****
Posts: 7121



« Reply #5 on: July 18, 2009, 21:32:54 pm »

I use a small nylon hammer after backing bolts off 4 threads
Logged
Steve D.
Full Member
***
Posts: 202


« Reply #6 on: July 19, 2009, 03:14:59 am »

Take the bolts back out and restart the motor WFO.
Logged

Über Alles

5 tracks, 5 days, 1000+ miles.
10.77 avg. on pump fuel.
238I
Steve D.
Full Member
***
Posts: 202


« Reply #7 on: July 19, 2009, 03:16:13 am »

I use a detorqueing tool.
Logged

Über Alles

5 tracks, 5 days, 1000+ miles.
10.77 avg. on pump fuel.
238I
mr horsepower
Sr. Member
****
Posts: 463



WWW
« Reply #8 on: July 19, 2009, 15:50:08 pm »

Just rev your engine above 6000 rpm  Grin Grin
Logged
Pages: [1] Print 
« previous next »
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.21 | SMF © 2015, Simple Machines Valid XHTML 1.0! Valid CSS!