Author Topic: 1977 cb750f2 (915cc)  (Read 240836 times)

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Offline wannabridin

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    • 1976 CB750K, under construction:
Re: 1977 cb750f2 "Heads here"
« Reply #500 on: September 13, 2011, 11:45:51 AM »
Little late in following up, but I've used the red block coating on every engine I've rebuilt in the last 20 years (race & street).  Never had a problem with it peeling, just have to make sure the surface is perfectly clean.  It definitely helps oil flow back.  Of course we would also dremel the inside to remove any flash, and casting marks, to make things as smooth as possible.

thanks TT!  good advice there, and nice to hear someone whose used it a lot!  i'm sold!
1976 CB750K, currently under construction:
http://forums.sohc4.net/index.php?topic=64468.0

-And if you don't do it this year, you'll be one year older when you do...

Offline tweakin

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Re: 1977 cb750f2 "Heads here"
« Reply #501 on: September 25, 2011, 01:07:23 PM »
Today while my wife took my girls to the fair I was able to get the internals all put into place and ready to close up the cases.  I did a fir of the crank, torqued it all down and all is good with the new crank bearings.  If I hadn't ran out of assembly lube and Hondabond I would have had the cases together.

Also sent off my rockers to be hard welded by Megacycle via Mike Rieck.

« Last Edit: September 25, 2011, 07:32:32 PM by tweakin »

Offline Tintop

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Re: 1977 cb750f2
« Reply #502 on: September 25, 2011, 02:42:03 PM »
Boy that looks nice tweakin.  It's a shame to have to hide that APE prep'd crank. ;) :)

You won't be disappointed with the rockers from MikeR.  The ones I got from him for the 550, were very nice pieces. 8)
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
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Offline wannabridin

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Re: 1977 cb750f2
« Reply #503 on: September 25, 2011, 05:13:52 PM »
dangit!!  yet another reason to spend money!!  i decided the other day to have my rockers hard welded by Mike when i get the cash too!  sucks spending money for cool toys!!   :D

awesome shot there tweakin!
1976 CB750K, currently under construction:
http://forums.sohc4.net/index.php?topic=64468.0

-And if you don't do it this year, you'll be one year older when you do...

Offline brandEn

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Re: 1977 cb750f2
« Reply #504 on: September 25, 2011, 07:04:12 PM »
I have a ton of assembly lube and some Yamabond. Looks good.

Offline tweakin

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Re: 1977 cb750f2
« Reply #505 on: September 26, 2011, 06:13:16 AM »
Thanks B.  I think I will stop in at RMC today and pick some up.
I have a ton of assembly lube and some Yamabond. Looks good.

Offline jaguar

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Re: 1977 cb750f2
« Reply #506 on: September 26, 2011, 06:48:23 AM »
dangit!!  yet another reason to spend money!!  i decided the other day to have my rockers hard welded by Mike when i get the cash too!  sucks spending money for cool toys!!   :D

awesome shot there tweakin!

Mike is doing that? didnt know that
are you going to lighten the rockers too?
$??

Offline tweakin

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Re: 1977 cb750f2
« Reply #507 on: September 26, 2011, 04:19:28 PM »
Mike R and do and get just about anything you need at a VERY competitive price...  He is even a cycleX dealer.

dangit!!  yet another reason to spend money!!  i decided the other day to have my rockers hard welded by Mike when i get the cash too!  sucks spending money for cool toys!!   :D

awesome shot there tweakin!

Mike is doing that? didnt know that
are you going to lighten the rockers too?
$??


Offline tweakin

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Re: 1977 cb750f2 cases together
« Reply #508 on: October 02, 2011, 07:19:52 AM »
Some of the last parts to complete my engine build.  I am also going to add a boxed swingarm to stiffen this up in the rear.









I hope to get in the garage today, watch some football and get most of the top end built up.

« Last Edit: October 02, 2011, 06:07:15 PM by tweakin »

Offline FunJimmy

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Re: 1977 cb750f2 cases together
« Reply #509 on: October 02, 2011, 03:58:24 PM »
Tige

Lookin really sweet, and what an awesome rack you have there.  :o
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Offline tweakin

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Re: 1977 cb750f2 cases together
« Reply #510 on: October 02, 2011, 06:04:53 PM »
Jugs, head and MLS gasket on and torqued down.  I will let them sit over night then re torque.






Offline brandEn

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Re: 1977 cb750f2 cases together
« Reply #511 on: October 02, 2011, 06:43:16 PM »
I like that color combo. What color valve cover you going with?

Offline d1000rr

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Re: 1977 cb750f2 cases together
« Reply #512 on: October 02, 2011, 07:12:45 PM »
wow... just wow.
I'm loving it all man.


Offline wannabridin

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Re: 1977 cb750f2 cases together
« Reply #513 on: October 02, 2011, 07:47:23 PM »
VERY good stuff!! 

i must ask, what do you do for a living tweakin???   ;D ;D
1976 CB750K, currently under construction:
http://forums.sohc4.net/index.php?topic=64468.0

-And if you don't do it this year, you'll be one year older when you do...

Offline tweakin

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Re: 1977 cb750f2 cases together
« Reply #514 on: October 03, 2011, 06:15:12 AM »
Ha Ha.  I am very fortunate to have a great job, that I worked my A$$ off for and a wife that understands my addiction. 
VERY good stuff!! 

i must ask, what do you do for a living tweakin???   ;D ;D

Offline jaguar

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Re: 1977 cb750f2 cases together
« Reply #515 on: October 03, 2011, 09:09:27 AM »
carpy swing arm?
Im looking for a dresda for my K1

Offline tweakin

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Re: 1977 cb750f2 cases together
« Reply #516 on: October 03, 2011, 10:09:36 AM »
Yes, It is a Carpy "Dresda like" swing arm.  I am real happy with the quality and the finish of the arm.  I really wanted a Dresda but they are not the easiest to come by.  Carpy had an "F" swingarm in stock so I jumped on it.  Ordered it Wednesday and had it at my place Saturday.

carpy swing arm?
Im looking for a dresda for my K1

Offline jaguar

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Re: 1977 cb750f2 cases together
« Reply #517 on: October 03, 2011, 10:20:51 AM »
ive heard alot of good things about them.
I wasnt sure about them when i heard that they were wider to fit larger wheels but everyone seems happy.


Have you run a motor with those RS34s?
Ive heard that they are nicer on the street then the CRs
what are you doing with your CRs?


Offline tweakin

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Re: 1977 cb750f2 cases together
« Reply #518 on: October 03, 2011, 10:32:46 AM »
I have never ran the RS34's, but I can't wait.  I am planning on keeping the CR's intact with the 836 engine I currently have in my bike.  That way once I find another bike I will have a solid engine to swap into it.

ive heard alot of good things about them.
I wasnt sure about them when i heard that they were wider to fit larger wheels but everyone seems happy.


Have you run a motor with those RS34s?
Ive heard that they are nicer on the street then the CRs
what are you doing with your CRs?



Offline jaguar

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Re: 1977 cb750f2 cases together
« Reply #519 on: October 03, 2011, 10:46:03 AM »
So the rs34s would be to big for a 812 yoshi motor?

Offline tweakin

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Re: 1977 cb750f2 cases together
« Reply #520 on: October 03, 2011, 11:57:52 AM »
I would think so....  I wouldn't want to run them on my 836.

Offline Retro Rocket

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Re: 1977 cb750f2 cases together
« Reply #521 on: October 03, 2011, 11:23:10 PM »
So the rs34s would be to big for a 812 yoshi motor?

That would depend on how much work is done to the head, the RS34's are a lot more adjustable than the CR's....
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Offline voxonda

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Re: 1977 cb750f2 cases together
« Reply #522 on: October 04, 2011, 03:26:02 AM »
+1,

You would need a very efficient head to suck in >47% more air than stock.
Better sorry for failing then for the lack of trying.

Offline lucky

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Re: 1977 cb750f2 cases together
« Reply #523 on: October 04, 2011, 03:58:39 AM »
Question..
What is the red paint inside the engine cases and will it stay on under the heat and hot oil?

Thanks.

Offline tweakin

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Re: 1977 cb750f2 cases together
« Reply #524 on: October 04, 2011, 07:03:30 AM »
Question..
What is the red paint inside the engine cases and will it stay on under the heat and hot oil?

Thanks.

Your eyes are good WR.  The red coating is Glyptal.

http://www.eastwood.com/glyptal-red-brush-on-1-qt.html?srccode=mn130060

Multi-Purpose Glyptal® Red Enamel seals uneven surfaces in engine castings to improve oil circulation

Glyptal 1201 seals the rough interior castings of engine blocks to help prevent engine damage. Sealing the tiny pores left in metal after bead blasting leaves the engine block interior smooth and clean, and that helps keep oil clean and flowing freely.

Acid- and oil-resistant
Also resists moisture, heat dust, salt spray
Anti-corrosion protection

Are my eyes playing tricks, or did you paint the inside of the engine cases too??

Can't wait to see the engine go together!! :)

One page back this was discussed.  It is Glyptal and is specially made for the inside of cases and other engine parts.  Been used for years.