Author Topic: 1977 cb750f2 (915cc) (Read 235918 times)

rickmoore24 · « **Reply #475 on:** September 01, 2011, 12:40:55 pm »

DAAAAAAAAAAAAAAMMNNN!! Nice!

wannabridin · « **Reply #476 on:** September 01, 2011, 01:30:25 pm »

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!!

tweakin · « **Reply #477 on:** September 01, 2011, 03:31:48 pm »

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

Quote from: wannabridin on September 01, 2011, 01:30:25 pm

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!!

Cevan · « **Reply #478 on:** September 01, 2011, 07:06:52 pm »

Very nice build. I'm thinking of using that same seat on my F1. Do you have any pictures or info on how you mounted it?

wannabridin · « **Reply #479 on:** September 01, 2011, 09:45:05 pm »

how difficult was it to apply? i def. like the thought of this!! i wonder about its longevity and also, what happens if/when it breaks down? you might have me onto something

Retro Rocket · « **Reply #480 on:** September 01, 2011, 09:48:08 pm »

Quote from: wannabridin on September 01, 2011, 09:45:05 pm

how difficult was it to apply? i def. like the thought of this!! i wonder about its longevity and also, what happens if/when it breaks down? you might have me onto something

I would like to know what happens if it delaminates as well.....

I like the way it cleans up the inside cases and would use it if its fail proof...

tweakin · « **Reply #481 on:** September 02, 2011, 05:51:23 am »

Very easy apply, you can brush or spray it on.

It has been used for years by top race/drag engine builders with out problems, and I know quite a few builders personally who swear by it. That being said, anything can happen. Of all the 750 engines I have cracked open, all were at one time coated Black in F, and gold for K's. The current engine cases I am using for this build almost all the internal coating was gone and it had to go somewhere, but the engine still ran well.... The internal cases were super rough and pores which would only trap old oil and dirt. I don't care what the insides look like I just ant it to function well.

If it goes I will just swap in the old, built, 836 engine and start over with a new build..

Quote from: Retro Rocket on September 01, 2011, 09:48:08 pm

Quote from: wannabridin on September 01, 2011, 09:45:05 pm
how difficult was it to apply? i def. like the thought of this!! i wonder about its longevity and also, what happens if/when it breaks down? you might have me onto something

I would like to know what happens if it delaminates as well..... I like the way it cleans up the inside cases and would use it if its fail proof...

MCRider · « **Reply #482 on:** September 02, 2011, 05:55:21 am »

Of the 750s I've had open the color came from the oil that had been used. Gold and black being the most common residues.

There is no coating from the factory, would be my interpretation.

OCICBW

I have no opinion about using a coating, news to me.

tweakin · « **Reply #483 on:** September 02, 2011, 06:17:05 am »

May be a bit more difficult to tell on the K but on the F it is obvious that the color is not from oil residue, I was in the petroleum business for years in a previous life. Both of these are coatings are also from newer modle cases. Maybe you have never cracked a newer cb case?

Quote from: MCRider on September 02, 2011, 05:55:21 am

Of the 750s I've had open the color came from the oil that had been used. Gold and black being the most common residues.

There is no coating from the factory, would be my interpretation.

OCICBW

I have no opinion about using a coating, news to me.

MCRider · « **Reply #484 on:** September 02, 2011, 07:23:31 am »

Very interesting. Yes my experience is only with earlier motors. I'm open to learning.

My assumption in these cases would be if someone was willing to make a product like that and expose themselves to the liability, it's most likely harmless.

tweakin · « **Reply #485 on:** September 02, 2011, 07:36:08 am »

I agree MCrider. Engine coatings could be a debate to parallell the great oil debate.

I chose to coat the cases because the engine builders I trust and who have much more experience than I recommended it to me. That being said I won't do the pistons, rockers ect.

tweakin · « **Reply #486 on:** September 10, 2011, 06:35:46 am »

My head came in yesterday from Mike Rieck (JMR Porting) and it is art.... Stage 3 port with 5mm valve stem conversion, HD springs and Ti retainers. This should really wake up my 915 Also had the ports matched to the intake boots and picked up a Megacycle 125-75 cam and ordered a set od Mukuni RS34's. This should be everything I need to complete the build. Thanks Mike!

brandEn · « **Reply #487 on:** September 10, 2011, 06:40:03 am »

I can't wait to ride your bike! haha!

Man that looks great. I think you should slap some clear over that and call it good. Rest of the engine black.

jaguar · « **Reply #488 on:** September 10, 2011, 09:37:06 am »

very cool

hapakev · « **Reply #489 on:** September 10, 2011, 10:00:26 am »

That is SWEET!

Jerry Rxman Griffin aka MuthaF'er · « **Reply #490 on:** September 10, 2011, 10:29:49 am »

I have one of those

Your build is almost identical to mine. I'm using Carrillos. Can't wait to see how those 34mm carbs do. Hope you dyno tune it. I have a new set of CR31's. Where did you find the 34's? Sudco? What did they set you back?

tweakin · « **Reply #491 on:** September 11, 2011, 05:34:09 am »

Quote from: Jerry Rxman Griffin on September 10, 2011, 10:29:49 am

I have one of those Your build is almost identical to mine. I'm using Carrillos. Can't wait to see how those 34mm carbs do. Hope you dyno tune it. I have a new set of CR31's. Where did you find the 34's? Sudco? What did they set you back?

Carrillos were a bit rich for my blood, but man they are beautiful. I got the Mukuni's from Mike Rieck, that man has everything you need for a HiPo engine... They cost about the same as the CR's. Is your engine up and running?

Freaky1 · « **Reply #492 on:** September 11, 2011, 06:54:34 am »

Are the pistons from Dynoman? I've seen that they now have a 915 kit for our beloved F's and was thinking about going this route. I'm also curious, why no coating on the pistons or rockers? I know several people who swear by it but I have no experience with it personally. You thoughts?

I can vouch for the coating on the inside of a '77 F motor, it's pretty obvious even at first. Then I tried to use spray on stripper and while I ment to not spray the inside, I couldn't help it and some came off.

Loved this build for a long time and only getting better with the new motor, nice...very nice.

bluesmoke69 · « **Reply #493 on:** September 11, 2011, 09:34:15 pm »

Nice work, can't wait to here it on video!!!

Jerry Rxman Griffin aka MuthaF'er · « **Reply #494 on:** September 11, 2011, 10:05:02 pm »

Tweakin,

No, it's not complete yet. Life got in the way

tweakin · « **Reply #495 on:** September 12, 2011, 05:11:23 am »

Quote from: Freaky1 on September 11, 2011, 06:54:34 am

Are the pistons from Dynoman?

I saw Dynomans kit, looks nice. This kit is from Cycle X wesico piston kit that comes with sleeves you don't have to bore the cases to use. I am actually using a K engine for this build, because I wanted the K head to open up some more possibilities for a larger cam. This way I will have a complete 836 F engine with APE headwork waiting in my garage for a second stocker (yet to be purchased). I am completely sold on the coating for non moving parts but still a bit concerned on pistons and rockers. I know all the info is positive but it is just one of my little hang ups. Thanks for checking in on my thread.

Tintop · « **Reply #496 on:** September 12, 2011, 06:20:38 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.

rickmoore24 · « **Reply #497 on:** September 12, 2011, 07:25:24 am »

The heads look great! That is fantastic work.

tweakin · « **Reply #498 on:** September 13, 2011, 07:01:00 am »

I hear ya, sometimes life doesn't understand our plans.

Quote from: Jerry Rxman Griffin on September 11, 2011, 10:05:02 pm

Tweakin,

No, it's not complete yet. Life got in the way

Thanks for checking out the thread Tintop. Good to hear another supporter of block coating.

Quote from: Tintop on September 12, 2011, 06:20:38 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.

hapakev · « **Reply #499 on:** September 13, 2011, 09:00:18 am »

My dad likes to say, "if you want to make god laugh, tell him your plans."

News:

Author Topic: 1977 cb750f2 (915cc) (Read 235918 times)