Author Topic: Pumped, stoked, excited, about time, badass NOS CB750F.... IT RUNS!!........ (Read 6767 times)

Jerry Rxman Griffin aka MuthaF'er · « **on:** January 20, 2013, 02:07:32 PM »

Well, I just don't know how to best describe my feelings right now. It's been 4 to 5 years since I started my project. 2 years since the tear down. It started when I found a NOS Henry Abe 900 kit on EBay. 750 Insanity ensued!! Since then I have purchased as many new parts as possible from Honda and scoured and sourced NOS parts from 9 countries. Anything I could get. I had to pay dearly for some of them while others were a bargain. Serious cash into this project but I've always wanted to do right but only once. There are some things in life that just can't be beat - first sex, early morning dew, that amazing sunset.............................................

AND the smell of a newly rebuilt engine...

It runs, runs strong and wants to go!! Damn, that's tempting. The NOS odometer now has 5.6 miles with 5 just ridden on a Colorado January beautiful day. How tempting but it has to get kinda gently broken in. I just returned from it's maiden voyage. W O W !! The whole bike is working amazing well. No leaks. Unbelieveable how well all sytems are working but I gotta figure out those CR31 carbs AND remember that I have a petcock that needs to be turned on.

That was my first Oh #$%* moment until I realized it was also my stupid moment.

I'll post up some pictures and more details at Bike of The Month in the next day or so as Bill BentOn nominated me. Thanks to Bill and the others that have baby sitted me along the way Mike.

Stev-o · « **Reply #1 on:** January 20, 2013, 02:15:46 PM »

Nice job and congrats. Looking forward to seeing the pics.

754 · « **Reply #2 on:** January 20, 2013, 02:27:15 PM »

Let me 2 congratulate you..well done.. Hope you get many sMILES out of it...

bwaller · « **Reply #3 on:** January 20, 2013, 02:28:09 PM »

Well done Jerry. It may have been a long time coming, but that probably makes it feel all the better.

brandEn · « **Reply #4 on:** January 20, 2013, 03:45:12 PM »

Congrats! Man looking forward to hearing some ride reports and seeing the pictures.

imamotohead · « **Reply #5 on:** January 20, 2013, 06:15:26 PM »

Way to go Jerry, perseverance always pays off!!

scottly · « **Reply #6 on:** January 20, 2013, 06:20:31 PM »

You do realize that to seat the rings, you need to do some acceleration spurts, in a higher than normal gear. No big revs, just put a load on the motor. Even short-shifting it, I'm guessing you'll be pleased!

Jerry Rxman Griffin aka MuthaF'er · « **Reply #7 on:** January 20, 2013, 06:42:33 PM »

Scotly, this sum#$%* WANTS to run. Only did 5 miles but I found I have to be careful in lower gears for now. If it starts sneaking up the revs it wants to go from there. And QUICKLY! But it feels gooood!

I haven't watched the tach on such a short jaunt (think it hit red at least once) as I was more concerned learning the CR's and the choke pattern on a cold engine. Seemed somewhat cantankerous. Stopped to put a couple gallons gas in on top of some 100 octane AV gas I'm sitting on (didn't want to go with too much initially) and wasn't sure it was going to fire. I just need to warm the engine and play with the choke etc. Initial jetting seems OK but that'll be determined come springtime when I locate a dyno. It is STRONG and effortless! I'm not one to baby an engine during break-in. The old guys always said to break 'em in like you're going to ride 'em.

MRieck · « **Reply #8 on:** January 20, 2013, 06:49:42 PM »

Quote from: Jerry Rxman Griffin on January 20, 2013, 02:07:32 PM

Well, I just don't know how to best describe my feelings right now. It's been 4 to 5 years since I started my project. 2 years since the tear down. It started when I found a NOS Henry Abe 900 kit on EBay. 750 Insanity ensued!! Since then I have purchased as many new parts as possible from Honda and scoured and sourced NOS parts from 9 countries. Anything I could get. I had to pay dearly for some of them while others were a bargain. Serious cash into this project but I've always wanted to do right but only once. There are some things in life that just can't be beat - first sex, early morning dew, that amazing sunset.............................................

AND the smell of a newly rebuilt engine...

It runs, runs strong and wants to go!! Damn, that's tempting. The NOS odometer now has 5.6 miles with 5 just ridden on a Colorado January beautiful day. How tempting but it has to get kinda gently broken in. I just returned from it's maiden voyage. W O W !! The whole bike is working amazing well. No leaks. Unbelieveable how well all sytems are working but I gotta figure out those CR31 carbs AND remember that I have a petcock that needs to be turned on. That was my first Oh #$%* moment until I realized it was also my stupid moment.

I'll post up some pictures and more details at Bike of The Month in the next day or so as Bill BentOn nominated me. Thanks to Bill and the others that have baby sitted me along the way Mike.

No babysitting....more waiting brother.

scottly · « **Reply #9 on:** January 20, 2013, 06:53:54 PM »

Quote from: Jerry Rxman Griffin on January 20, 2013, 06:42:33 PM

The old guys always said to break 'em in like you're going to ride 'em.

Yeah, but only for short bursts, followed by cooling periods, which would be about 2 minutes in CO this time of year.

Don R · « **Reply #10 on:** January 20, 2013, 08:00:01 PM »

Someday when you get time, could you school me a little on the 900 kit?

Stev-o · « **Reply #11 on:** January 20, 2013, 08:02:20 PM »

Jerry - did you bore to 836?

Jerry Rxman Griffin aka MuthaF'er · « **Reply #12 on:** January 20, 2013, 08:39:29 PM »

Steve and Don,

I found a NOS Henry Abe 900 kit on EBay about 5 years ago. At that time about the only new stuff available was 836. When this came up I grabbed it. ~ $700. Had the pistons, rings, gaskets and cylinder liners all included in the original box. Already had the Yoshi 812 kit so 836 wasn't that appealing to me. The 836 is basically a slightly bigger stocker. I'd always wanted to go bigger but knew this would require resleeving of the cylinders. I liked this kit because I did not have to ream out the upper case half as the liners drop into the existing case holes/opening. I didn't want to cut up my cases since I have a low serial number (1606). I sent the kit and cylinders to Big Jay and he did the machining for me. If I remember that was close to another $700. Downside to a 900 is $$$. 836 is MUCH cheaper. It also requires better rods or at least they should seriously be considered to protect your investment. I tried buying EBay rods and did 2 deals on used rods as there wasn't much available new. Carrillos was about it as far as good strong rods go. After realizing I'd wasted that cash on unmatched weights in one 'CR750' set (not real CR stuff, just heavy weight stock like rods) that weighed +/- 375gm each and another set of redone stocker RC rods (not Goldenrods) that had been used hard and had big end issues and a few slight off-center bends I bit the bullet and sent my crank to Big Jay for lightening and balancing with install of Carrillos. ~ $1500. These days there are quite a few options available: 836, 849, 890, 900, 915, 1000 but anything over 836 and you should upgrade the rest of the engine too. At least rods, cylinder studs and crank studs. Head work can get very expensive (more than my rods/crank work) but with a big increase in cc's you really should increase the air flow/gas flow. Of course you need a new high performance cam to take advantage of all the head work. That's where the serious HP comes into play and it really cuts all those cc's loose! Now we're into expensive carbs also. Undercutting the tranny is not so necessary but at this point what's another ~ $350 - $400 to get you peace of mind as it is magnafluxed/inspected and it won't pop out of gear if it's getting a little worn. Then there the usual rebuild bits and pieces. Of course now there are MLS head and cylinder gaskets (Multi Layered Steel with nitrile (?) coatings that should seal better and with a high hp engine that's another good ~ $150 investment. What the hell, it's only money

Plus it has been a great project.

So you see it's not just doing a 900 kit. That can be done but if so stick to the 836 with a cam and a 'normal' head upgrade. Good results but much less expensive. Is that kinda what you were looking for Don?

brooze72 · « **Reply #13 on:** January 20, 2013, 08:52:53 PM »

Great story, thanks Jerry. Anxiously awaiting some pics. Congrats on the build.

Retro Rocket · « **Reply #14 on:** January 20, 2013, 09:15:16 PM »

About fcuking time.....

I'm not far off starting my first of 3 Jerry, its a 900 MTC....

tweakin · « **Reply #15 on:** January 21, 2013, 06:01:03 AM »

Great Day Jerry! Wish you lived closer so I could buy you a beer. Enjoy the hell out of that thing.

Stev-o · « **Reply #16 on:** January 21, 2013, 06:04:34 AM »

Quote from: tweakin on January 21, 2013, 06:01:03 AM

Great Day Jerry! Wish you lived closer so I could buy you a beer. Enjoy the hell out of that thing.

Yeah, we should all buy him a beer...or a bottle! Such dedication to a bike that's outlasted three wives....ha!

toytuff · « **Reply #17 on:** January 21, 2013, 06:12:50 AM »

Quote from: Stev-o on January 21, 2013, 06:04:34 AM

Quote from: tweakin on January 21, 2013, 06:01:03 AM
Great Day Jerry! Wish you lived closer so I could buy you a beer. Enjoy the hell out of that thing.

Yeah, we should all buy him a beer...or a bottle! Such dedication to a bike that's outlasted three wives....ha!

Dedication!

tt

KRONUS0100 · « **Reply #18 on:** January 21, 2013, 07:36:48 AM »

AWESOME!! cant wait to see the pics

Red Good · « **Reply #19 on:** January 21, 2013, 08:17:01 AM »

Congrats man ! Patience is rewarded . Bet it felt good .

Don R · « **Reply #20 on:** January 21, 2013, 09:16:21 AM »

Thanks Jerry, that was exactly what I was wondering about. My local 750 expert told me to lighten the dyno too, only because he twisted one off once. You verified what he said and added a couple things I didn't know. Thanks, and enjoy your new 750.

ofreen · « **Reply #21 on:** January 21, 2013, 05:34:22 PM »

I was wondering how it was going. I know you first started it a few months back.

seanbarney41 · « **Reply #22 on:** January 21, 2013, 06:04:45 PM »

Jerry, over the years, how many times have you told a newbie?,..."Pics or it didn't happen."

Jerry Rxman Griffin aka MuthaF'er · « **Reply #23 on:** January 21, 2013, 06:33:07 PM »

Oh yeah... I have a couple SD cards full of pics from along the way but the end product is what counts. Perhaps one day I'll put a build thread together. Bill Benton put me up for bike of the month so I've posted some up there also.

Yeah, I fired it up and ran into a clutch issue so I walked away. The warm weather bug bit me in the ass then Bill nominated me so I was shamed into finishing. Upgraded to the newer clutch and mixed and matched out of order. Ordered new Honda discs and Barnett springs along with 5 gallons of Kerosene for my heater and got back into the garage. Figured it out then had a bolt snap when I was installing the lifter plate to the pressure plate couple nights back at 10:30pm and lucked out with that Sat. I was having a real mental clutch block!

Click on the pictures to enlarge and tell me what's NOT new.

It's really hard to tell just how good it does look in pictures! Wish everyone could see it in person.

Greggo · « **Reply #24 on:** January 21, 2013, 06:34:34 PM »

Looks pretty damn good to me Jerry! I like the Corvette too

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Author Topic: Pumped, stoked, excited, about time, badass NOS CB750F.... IT RUNS!!........ (Read 6767 times)