Shiny's 1980 CB750 F...happy with pods.

[hambone]

hey shinyribs, I did not realize my last post would go to the forum and I hope I haven't offended anyone or anything mentioning the Harleys.i know its a busy world and theres other things besides the bikes. I hope all is well and the bikes are coming along. peace,mark

On Sun, May 24, 2015 at 8:31 AM, Mark Hamilton <[hidden email]> wrote:

im still interested even if not stock..and I know the rims but they wont go w the 75...I just put a  wide glide raked front end on and 21" chome spoke soo..this bike bike bike runs and looks incredible but handling is very v

cumbersome to say the least!  going up for sale lol....that stock Honda I just refurbished..cant get off of it!plush...so yes seat for the 73 is still needed if you wanna send a pict..thank you very much..have a great day..78 here!

On Sat, May 23, 2015 at 4:23 PM, shinyribs [via Honda CB750'S] <[hidden email]> wrote:

Edit: Hambone, they are the stock flanged aluminum spoke rims. Just to be clear.

A free people ought not only be armed and disciplined, but they should have sufficient arms and ammunition to maintain a status of independence from any who might attempt to abuse them, which would include their own government.~George Washington

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NAML

[TOOLS1]

I don't mind Harley's, just the assholes that think they are the most wonderful things under the sun, and kicked a dent in my gas tank.
TOOLS

[hambone]

not cool at at all...I'm really just fascinated at machinery on two wheels ,enjoy making them run and of course the gratification of riding them after. I owe you and others many thanks for helping me along with my CBs ..I think I will just stick to Honda talk out of respect...as I stated before im not to good on the computer,usually rushing around and thought it was just a p.m...also I will keep it to the subject .I have much respect for you tools and shiny for never ending help and dedication

[TOOLS1]

Its all good. I don't mind talking about Harley's, I enjoy a good joke every now and then.
OOLS

[shinyribs]

I'll admit, I really like the design of the old Ironheads I've fiddled with. Sure, they are big,bulky engines, but some parts of them are just neat. The valve adjustment process in extremely simple, for example. The swingarm pivots seem overly complicated ( and not typical for HD engineering), but you gotta admit that tapered needle bearings are awesome and far superior to plastic bushings.  

Hambone, I totally forgot about the pics of the IH parts. My bad man. I'll get on that tomorrow.

[shinyribs]

This was supposed to be my summer or riding, but instead...continued wrenching. Both bikes are being stubborn.

Anyway,finally got these carbs mounted to suit me.

I used SOHC boots. Flipped, rearranged and only slightly modified. Really, I think it's something worth mentioning.

First off, they are mounted to the head backwards. Meaning the carb side of the boot is what you put on the intake spigots. They actually fit very well and the internal groove lines up perfectly on to the intake spigot. Also, the transition is seamless and smooth.


Trim the other (originally the ''head'' side ona SOHC) end of the boot just enough to flush it to the groove. Side by side comparison of un-trimmed and trimmed. You won't have a groove to lock on to the carb throats like stock, but they will fit well and , as I learned with the radiator hoses, they will sorta develop their own groove after spending some time on the bike. Being clamped down and heated tends to leave a pretty good impression in the rubber. Again, the internal transition is spot on. Pure luck, but I'll take it!



Lastly, the orientation of the boots is a little different as in you mix them inside out, basically. Meaning use boots 2 and 3 on the outer cylinder and 1 and 4 on the inner cylinders.

I lost the pic of them mounted on the bike, but it's solid. It takes a little fiddling to get them clamped on as, without the locking groove present on the carb side of the boots, they kinda tend to want to slip out. But it's not too bad. If I can manage it,anyone can.

On a side note, this bike died on me recently. Just up and died. I had just left for a camping trip when it started missing and sputtering. Limped home with only one cylinder firing,and it was weak. Fouled the other three cylinders.  What the poop? Nothing has changed and the plugs have been reading spot on? Well, remember when I wrecked this bike and it NEVER truly ran perfect again? Even with the Mikuni's I was still chasing a high rpm stumble for a while? Well, the high rpm stumble returned directly after the bike fouled those plugs. Argh!!!! What the heck???? Turns out, the battery was damaged in the wreck. Even though the battery gauge on the Trailtech unit is showing it as charging ( and it is- shows 14.2 at cruise,12.8-ish at idle, 11.8 at rest) there must be a damaged cell or something. So FINALLY, she's happy.

However, now I'm curious....this bike was running perfectly well with stock CV's carbs and pods before the wreck. Have I done ALL of this work, swapping and tail chasing JUST to discover that I busted up the battery when I laid it down? If I put those stock CV's and pods back on would it run perfectly again? Ugh, I'm not going to find out. Don't look a gift horse in the mouth,right? Leave well enough alone,right? Don't even care. Just wanna ride.

[Hoko]

"Have I done ALL of this work, swapping and tail chasing JUST to discover that I busted up the battery when I laid it down? "
lol, been there and done that more times than I want to admit  I'm glad you found your gremlin Shiny.

[shinyribs]

Such is life. Thanks,Hoko.

[Oilfield trash]

You really don't give up! Sorry to post and disappear. Kids, work, and good riding weather makes it hard to spend time on the phone or computer. I saw your comment on the cartridge forks. I'm excited for a front end swap. Sold one of my bikes today and didn't even make it home before I stopped and bought an 06 hyabusa front end. Yes, USD... but I like the look. I think I'll wait until winter to do the swap. Need to figure out the rear too.

Still loving the thread. Wish I had more to contribute besides the "good work" and "good luck" comments....but good work!

[shinyribs]

Thanks man, I appreciate it.

But....as far as giving up...welp.

Despite the fact that the plugs are reading a little rich, the bike overheated to the point of the starter barely being able to turn it over. Measured the oil pan temp and got 320*f !

Back to the drawing board. The bike starts great and runs like a scalded dog, it's just seriously overheating. Annoyed is an understatement.

[Oilfield trash]

Damn! Wrong time of year for that too. If your not too lean could this be from poor oil circulation? Maybe a partial obstruction on the oil screen? I'm curious to hear. Here in Houston when the air temp is 100+ F and 75% humidity and our lovely traffic is jammed up, I get anxious about the motor getting too hot.

Unrelated, Shiny,  I just picked up a dyna 2000 and am switching to a digital tach. I need to plug the tach drive. Do you have anymore plugs you'd like to sell?

[shinyribs]

I'm making up a small batch of plugs some time this week. What type of plug do you want? Also, I'm going to stop putting the additional groove on the plugs for an oring. After being installed for a while it makes the plugs almost impossible to remove without prying/marring them.

However, I have never, ever been able to get any type of electronic tach to read off on of these bikes. Sohc or DOHC. Keep that in mind, but also report back if it works out, please!

[Oilfield trash]

Shiny, that's great news on the plugs. The flat top one in this thread is perfect. You can invoice me paypal or shoot me your paypal info and I'll send it over ASAP.  Or however else you do it.

The Dyna 2000 has a digital tach output. So I'm not expecting any issues. Might I be in for a surprise? My hope is to go to a cleaner single gauge for speedo and tach.  I do t trust my current DCC cheapo tach. It's bouncy. It's inaccurate. It's soon to be for sale. Same with the speedo. Thanks again!

[shinyribs]

The Dyna teach output is probably going to do great. I was always working of stock stuff.

I'll give you a shout when the plugs are ready. Thanks man.

[Oilfield trash]

Still don't know how great the dynatek stuff is. They sent the wrong trigger plate. Non in stock so I've been patiently waiting weeks for them to make me a new one. I also had a eBay Chinese digital tach/speedo combo. Didn't even install it and bought the acewell 2853 Instead. I hate the waste indecision brings. Also sprung for a Oregon motorcycle parts reg/rec to constantly feed my Shorai 14.4v no matter if it's idle or WOT.  Any update shiny?

[shinyribs]

Man, that stinks about the mix up!

And I'm sorry, but my work exploded and my list of personal favors/chores is so insanely backedup at the moment. Finding time to make any more tach plugs is probably going to be this winter. Sorry man. Life just went nuts.

[Oilfield trash]

Unacceptable! No, I'm full of BS. Don't worry about the plug. I know life happens. Whoever does start making these could make a pretty penny, or a shinny nickel. I've called every major shop I know (joker machine, tc bros, dime city, cycle x, and many others) and none know of anyone making/selling them. With DOHCs gaining a lot of popularity lately....just what I need to convince the wife I need a lathe.

If there was any real money I'm sure they'd be making them. On another note my correct trigger plate came in. Quick and easy install. After the new cams, lith iron battery, electronic ignition, OMP reg/rec, and all the rewiring she runs great after a little syncing. Just finishing wiring in the new acewell 2853. Maybe a ride today!

[TOOLS1]

If I had the dimensions I could try to make one. But getting your own lathe is a good idea. I'm sure glad I got mine.
TOOLS

[shinyribs]

Tools, you do have the dims. Pop that factory installed plug out of your matic and there ya go. Just have to: 1: Drill a hole up the center to for the tach drive to clear. 2: Redice the O.D. of the head slightly to clear the valve cover for the twin cam. 0.565'' iirc. I can measure if you want.

[TOOLS1]

CAD drawings would be a big help.
TOOLS