Author Topic: Alan's CB750K3 Fork and Wheel Swap/RestoMod  (Read 30660 times)

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Offline cosmo

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #100 on: February 12, 2010, 01:46:42 pm »
While Hondaman had my swingarm I asked him to add some real grease fittings to both ends of the pivot bolt, it was only $5 or $10 more so why not?
Did he ever mention how he accomplished this?  Looking to do something similar
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Offline Alan F.

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #101 on: February 12, 2010, 01:53:55 pm »
Cosmo it looks like he simply tapped the ends of the pivot bolt to 1/4" NPT and threaded in the grease fittings, that's how I'd do it but since He already had my swingarm and parts...and I don't own any NPT taps...I jumped at the chance.
Good Question and thanks for checking out my build.
-Alan
Free Fork Swaps and Upgrades info parked at http://sites.google.com/site/alansdocuments/ 

My stalled 750K3 build: http://forums.sohc4.net/index.php?topic=46082.0

Fast moving 750K8 build started 5/17/20
http://forums.sohc4.net/index.php/topic,182592.0.html

Offline greasy j

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #102 on: February 12, 2010, 02:25:42 pm »
I'm planning to have HondaMan do the same for my swingarm. I want his book, too! one thing at a time, though.

wish I was rich!

Offline Alan F.

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #103 on: February 12, 2010, 02:38:15 pm »
Yeah I know it, the swingarm work is the single largest investment I've made in this project.  And it should make the largest improvement too.
-A
Free Fork Swaps and Upgrades info parked at http://sites.google.com/site/alansdocuments/ 

My stalled 750K3 build: http://forums.sohc4.net/index.php?topic=46082.0

Fast moving 750K8 build started 5/17/20
http://forums.sohc4.net/index.php/topic,182592.0.html

Offline Alan F.

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #104 on: February 15, 2010, 01:43:25 pm »
Finally here's a little mock-up with the polished side covers on:






Free Fork Swaps and Upgrades info parked at http://sites.google.com/site/alansdocuments/ 

My stalled 750K3 build: http://forums.sohc4.net/index.php?topic=46082.0

Fast moving 750K8 build started 5/17/20
http://forums.sohc4.net/index.php/topic,182592.0.html

Offline greasy j

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #105 on: February 15, 2010, 08:49:23 pm »
lookin good!

Offline Alan F.

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #106 on: February 16, 2010, 01:51:55 pm »
Thanks man!
Free Fork Swaps and Upgrades info parked at http://sites.google.com/site/alansdocuments/ 

My stalled 750K3 build: http://forums.sohc4.net/index.php?topic=46082.0

Fast moving 750K8 build started 5/17/20
http://forums.sohc4.net/index.php/topic,182592.0.html

Offline Alan F.

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #107 on: February 27, 2010, 03:04:30 pm »
I successfully removed all of the stock cylinder studs! I'd never been through this before and I was a little nervous...but with the double nut in place and a box-end wrench on the lower nut, they all broke free with an audible 'CRACK!' and all came out cleanly!   I'll add pics later on, I'm stoked!
-A
Free Fork Swaps and Upgrades info parked at http://sites.google.com/site/alansdocuments/ 

My stalled 750K3 build: http://forums.sohc4.net/index.php?topic=46082.0

Fast moving 750K8 build started 5/17/20
http://forums.sohc4.net/index.php/topic,182592.0.html

Offline Alan F.

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #108 on: February 28, 2010, 07:07:59 am »
Last night I put in the APE HD studs too. 
First I unpacked the studs and soaked them in denatured alcohol to clean the oil from them.
Then I cleaned out the case threads with dozens of cheap cotton swabs and denatured alcohol, when they began to come out of the holes clean I knew I was done. 
I had one moment of minor panic when I realized that I hadn't measured the height of the 4 short studs or the height of the rest of the tall ones...uh-oh.  A quick search of the forums and a few measurements and I came to realize that the correct height of the APE studs is a matter of correct design, and isn't left to chance. 
Just clean up the case threads well and chase the threads out, a dot of red loctite on the stud threads (longer threads go into the case, nuts don't thread well onto this end, but thread easily onto the other end where they belong) and torque the studs to 8 ft/lbs.  My Craftsman torque wrench has inch/lbs so I set it to 96 in/lbs and went to town. 

As was mentioned in a previous thread, I mocked up the cylinder block on the studs and set the head on top of that, all of the studs were long enough with only a millimeter or so of variation on one or two of the tall ones.
Moment of panic averted, I'll post pics later on.
-Alan


Free Fork Swaps and Upgrades info parked at http://sites.google.com/site/alansdocuments/ 

My stalled 750K3 build: http://forums.sohc4.net/index.php?topic=46082.0

Fast moving 750K8 build started 5/17/20
http://forums.sohc4.net/index.php/topic,182592.0.html

traveler

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #109 on: February 28, 2010, 09:25:57 am »
Engine pics Sir?

Offline Alan F.

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #110 on: February 28, 2010, 10:35:59 am »
Here they are:
Old skinny studs, notice the front left stud, one of the 4 short ones, with the double nut and box end wrench on the stud below the bottom nut




I've marked the 4 short studs with the ratchet on the left, and three sharpie caps, I don't recommend this type of ratchet, I'll get one with the little lever to change direction next time...


Old studs out, this engine had never been stored open outside, so I was able to get all of the studs out in one piece, I don't think I even twisted any, they all just broke loose with the wrench from below, I didn't even have to add the ratchet from above, or use two pairs of visegrips near the bottom as I read in so many other threads.  I didn't use any PB blaster or anything, just did it dry.




And here are my APE HD studs all installed, they're visibly beefier, and are substantially stiffer than the skinny stockers.  This engine is remaining stock, I only added MC rings, kept the 3 piece oil rings (since I broke one of the MC 1 piece rings, oops) Honed the cylinders, cleaned a ton of carbon out of the head ports too, Valves held gas... so I'll leave em alone, camchain and tensioner are being reused, they weren't that bad and I'm a cheap bastard, it should be ok....  This engine only has 20K miles on the clock so I'm not very worried about it.
-Alan
Free Fork Swaps and Upgrades info parked at http://sites.google.com/site/alansdocuments/ 

My stalled 750K3 build: http://forums.sohc4.net/index.php?topic=46082.0

Fast moving 750K8 build started 5/17/20
http://forums.sohc4.net/index.php/topic,182592.0.html

traveler

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #111 on: February 28, 2010, 11:30:05 am »
Looks good, Al.  Nice and clean, with good parts going in. ;)

Are you staying at 736cc?

~Joe

Offline Alan F.

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #112 on: February 28, 2010, 11:44:13 am »
Thanks Joe, it's not really as clean as the pics show, but I'll be cleaning the engine cases next since I'll be painting everything. I'm gonna build an enclosure right there on the bench so I can heat-cycle the engine without running it...then I'll retorque the head gasket (maybe give it an extra ft/lb too) I'll heat cycle it a few times using a heat gun and an infrared thermometer to keep it up to.... I dunno 200 degrees? I'll have to search for acurate operating temps.  Then I'll mask off what's not getting painted and spray VHT's SP127, let it dry as the label says and then heat cure it a few times with an exhaust fan running, and a few windows open too.  Maybe I'll run the self-cleaning oven too, just so nobody asks what's going on....heh-heh.

Yeah, it's 736.  I didn't want to put too much money into my first rebuild ever. Maybe I'll go bigger sometime, but I'd like to get at least one successful rebuild under my belt first.
-Alan
Free Fork Swaps and Upgrades info parked at http://sites.google.com/site/alansdocuments/ 

My stalled 750K3 build: http://forums.sohc4.net/index.php?topic=46082.0

Fast moving 750K8 build started 5/17/20
http://forums.sohc4.net/index.php/topic,182592.0.html

Offline fastbroshi

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #113 on: March 01, 2010, 04:00:28 pm »
  I see yours came out easy, but would it be a good idea to maybe tack weld on a nut down near the base of the stud near the case to then put a piece of pipe over the wrench and turn it loose? Might be a good alternative to chance snapping a stud.  Slap me if this sounds stupid. 
  It makes sense that studs that are really seized in there snap given the length and diameter of them.
Just call me Timmaaaaay!!!

Offline Alan F.

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #114 on: March 01, 2010, 05:44:28 pm »
Here's the latest:

Old worn sprocket + bad PO =


A few scratches where the chain had slipped.

It looks good but I'll still be painting it. After these pics I cleaned up all of the gasket surfaces with 400 grit paper and cleaned up the motor mounts.
Then I hit the top of the head with the 400 looking for burrs, I didn't find any.
-Alan
I just kept cleaning and working my way around.










Free Fork Swaps and Upgrades info parked at http://sites.google.com/site/alansdocuments/ 

My stalled 750K3 build: http://forums.sohc4.net/index.php?topic=46082.0

Fast moving 750K8 build started 5/17/20
http://forums.sohc4.net/index.php/topic,182592.0.html

Offline HavocTurbo

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #115 on: March 03, 2010, 09:13:46 am »
Looking good Alan!!!

You are much further than I anticipated. Very nice!
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Offline Alan F.

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #116 on: March 03, 2010, 01:23:41 pm »
Thanks man!
Free Fork Swaps and Upgrades info parked at http://sites.google.com/site/alansdocuments/ 

My stalled 750K3 build: http://forums.sohc4.net/index.php?topic=46082.0

Fast moving 750K8 build started 5/17/20
http://forums.sohc4.net/index.php/topic,182592.0.html

Offline Alan F.

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #117 on: November 09, 2010, 08:23:55 am »
Made a little time to begin to deal with a nagging thought in the back of my mind this morning.  The rear wheel's sprocket carrier is a little wide to fit in my K3's swingarm, all of the mockups I've shown are with the rear axle all the way back in the adjusters, ideally I'd like full adjustment.

The original measurements I'd made took into account only chain line, not swingarm clearance. I had calculated that with an additional .055" shim between the sprocket and carrier, I'd be a full 3/8" out from center and I'd simply use one of Cycle-X's offset front sprockets.  Can't do that, so I'm saving $70 and milling or turning down the height of the sprocket carrier.

I got the studs out today with a double nut, and a little heat.


I calculate that removing .320" should bring the chain line back to stock.



Free Fork Swaps and Upgrades info parked at http://sites.google.com/site/alansdocuments/ 

My stalled 750K3 build: http://forums.sohc4.net/index.php?topic=46082.0

Fast moving 750K8 build started 5/17/20
http://forums.sohc4.net/index.php/topic,182592.0.html

Offline makemann

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #118 on: June 12, 2011, 06:37:46 pm »
Found this build thread by searching for side covers. Very interesting. Anything new on this since last November Alan?
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Offline Alan F.

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Re: Alan's CB750K3 Fork and Wheel Swap/RestoMod
« Reply #119 on: July 23, 2011, 10:59:46 pm »
Not so much since last november. I sort of disappeared from the forums for a while (except the dive bar) while I moved out of my house into an apartment of my own away from (soon to be EX) Wife and my Kids. The good news is I still have everything and its all in a basement workshop, but this time I won't be bumping my head on a pipe anytime I move around.....
I'm not setting any completion dates, but I'm finding money here and there to buy parts to get this thing done right. I've got a spraycan of Hylomar on the way to seal those pesky pucks, not the Permatex stuff either, this is the real thing. And today I ordered up an engine bolt kit from Jim Spillaine. I still need to get the forks back together, the bushings in there should run me about $75 and that'll be my next purchase. My day job is slow, but hell I'm salary so if they don't call me in I'm expected to simply 'be available' and cash the paychecks, not a bad deal if my budget wasn't as tight as it is.
But I'll have enough free time to really get things done, limitted only by money and creativity. There are plenty of things I can get done that won't cost a dime so I need to get them done first. I've got my eye on a Hondaman ignition and some of his relay kits and a fuse panel kit too. There isn't much sense in doing it myself when HM has already done all the design and test work for us.

So thanks Makemann for asking, I'm trying to do what I can so stay tuned.
Free Fork Swaps and Upgrades info parked at http://sites.google.com/site/alansdocuments/ 

My stalled 750K3 build: http://forums.sohc4.net/index.php?topic=46082.0

Fast moving 750K8 build started 5/17/20
http://forums.sohc4.net/index.php/topic,182592.0.html

 

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