Author Topic: CB750 gas tanks (Read 8053 times)

bill440cars · « **on:** December 31, 2005, 07:49:22 pm »

I was just browsing through Honda CB750K listings on ebay motors and I came across 2 gas tanks in seperate listings. The thing in, they had recessed filler necks and caps under a lid (or door). These were listed as 750K tanks. Am I nuts, I always thought those were 750F tanks and the 750 tanks had filler necks and caps that were slightly raised above the surface of the tank. Somebody tell me, because I do know from experience (as I'm sure lots of you do too), that some of these people don't know what they have and some just list their parts just any old way in hopes that it'll help draw attention to their items. Thanks, Bill

scondon · « **Reply #1 on:** December 31, 2005, 08:39:45 pm »

77-78 750k tanks have "caps under a lid". They look similar to F tanks but are much fatter and rounder looking.

bill440cars · « **Reply #2 on:** December 31, 2005, 08:50:18 pm »

Thanks Scondon, I appreciate that. That's why I called on you guys for some info. I thought I was right but, I wanted to be sure. Thanks again. I'm gone for now, Bill

seaweb11 · « **Reply #3 on:** December 31, 2005, 08:58:33 pm »

Long live the K8s and the final design that came out of all those other tries

Kidding..no hate mail please

Geeto67 · « **Reply #4 on:** January 01, 2006, 10:05:35 am »

Since we are on the subject....are the cb750A tanks the same as the 77-78 cb750K tanks?

damn_yankee · « **Reply #5 on:** January 01, 2006, 10:45:04 am »

Another question on this topic...
Will an early tank (K0-K6) fit on a K7/K8 (without mods)?

I personally like the earlier tank style than the one on my K8.

Thanks,

damn_yankee

jaknight · « **Reply #6 on:** January 01, 2006, 12:18:11 pm »

Quote from: damn_yankee on January 01, 2006, 10:45:04 am

Another question on this topic...
Will an early tank (K0-K6) fit on a K7/K8 (without mods)?

I personally like the earlier tank style than the one on my K8.

Thanks,

damn_yankee

Hi everyone,

Sorry I can't help you about the interchanging of tanks; but I do have agree with you damn_yankee; I do like that filler cap standing clear of the tank with the extra touches of chrome.
Many years ago (in th '60s) Corvette did the same type of thing with the chromed gas tank cap. I thought it looked great!

eurban · « **Reply #7 on:** January 01, 2006, 01:21:25 pm »

The 750 auto tanks are pretty much the same as the 77/78 k tanks except that they have a gas guage underneath the flap. The k tanks have the opening for the guage plugged over.

ericstew · « **Reply #8 on:** January 01, 2006, 02:22:44 pm »

Here are a few things about sohc4 gas tank:
-K0 sandcast:wrinkles gas tank+you can open the gas cap with only one hand(later 2 hands no key),fuel capacity between 18 and 19 liters
-K0(diecast)/K1/K2 same gas tank no wrinkles on bottom
-K3/K4 you need a key to open the gas cap.You can fit a lock on earlier models but will have to change the gas cap
-K5 the fuel peecock is relocated on the left side
-K7/K8/F1/F2/F3 new tank with gas cap under a locked flap
-A0/A1/A2 K7 tank+ gas guauge
You can fit a K2 tank on a F1 as the frame fixing points didn't change.
Bye

jaknight · « **Reply #9 on:** January 01, 2006, 03:16:23 pm »

Hey You All,

Eric ---------> Some good handy info. I wish you would drop by more often!
~ ~ ~ jaknight ~ ~ ~

[attachment deleted by admin]

Geeto67 · « **Reply #10 on:** January 02, 2006, 08:32:45 am »

I thought you could put any tank on any cb750 but the seats wouldn't line up. YOu could put a K0-K6 tank on a F but the seat would have a gap, and the F tank on a k0-k6 the seat wonlt fit at all, meaning the mountig points are the same for all cb750s, just the seats present the fitment issues.

ericstew · « **Reply #11 on:** January 02, 2006, 10:02:49 am »

I just meant the fitting points where the same for the tank,but it's right,not for the seat...

andy750 · « **Reply #12 on:** August 13, 2010, 07:23:55 am »

Bringing this topic back from the dead....

Does anyone know if a K8 tank will fit (at frame and seat) on an early 750K bike?

I am looking for the extra fuel capacity..photos would be great as well

**EDIT - I answered my own question today - no the K8 tank will not fit an early K frame with stock seat. The K8 tank is too long and so the stock seat will need to be cut short to make it fit with stock mounts and K8 tank....

thanks
Andy

andy750 · « **Reply #13 on:** August 15, 2010, 06:08:18 pm »

Edit - see above - problem solved...K8 tank will not fit an early K frame with stock seat.

754 · « **Reply #14 on:** August 15, 2010, 06:36:54 pm »

750 A tank , not only has the guage, it has additional clearance for the raised frame tubes..

And I think the lower edge is different as the seat/ sidecovers has a different look..

Old Scrambler · « **Reply #15 on:** August 15, 2010, 06:50:46 pm »

My K3 and my brother-in-law's K4 do not have key-locks........

andy750 · « **Reply #16 on:** August 15, 2010, 06:51:09 pm »

Quote from: 754 on August 15, 2010, 06:36:54 pm

750 A tank , not only has the guage, it has additional clearance for the raised frame tubes..

And I think the lower edge is different as the seat/ sidecovers has a different look..

Do you know if this fits the early K frames? It looks like the K8 tank which does not fit - probs with stock seat.

754 · « **Reply #17 on:** August 15, 2010, 08:20:13 pm »

Yeah, 73 74 I think had no lock, unless you went in for the recall.. I did not, nor did Old Scrambler, Rodell, or Cavebear..

The A had a lowered looking seat like 400 twins, 185s, GB 500s etc.... so if you trimmed or got a seat to fit, It may not look right.. but you can probably make it work..

GammaFlat · « **Reply #18 on:** August 15, 2010, 08:47:37 pm »

My K6 is "lockless" as well.

I have mixed feelings about the "K7 change". The CB750 needed an updated look and at the time it was probably the right thing to do but to lots of folks (me included), the retro look of K0-K6 (and especially the K0) is really hot.

News:

Author Topic: CB750 gas tanks (Read 8053 times)

damn_yankee