« previous next »
Pages: 1 2 3 [4]   Go Down

Author Topic: 78 CB750 Slow jets  (Read 26846 times)

0 Members and 1 Guest are viewing this topic.

Offline Kev Nemo

  • Honda Hacker
  • Hot Shot
  • ***
  • Posts: 364
  • http://fallingapartart.com/
    • FallingApartArt
Re: 78 CB750 Slow jets
« Reply #75 on: August 15, 2012, 08:02:33 AM »
Quote from: Tugboat on August 14, 2012, 02:46:13 PM
Hell yes!! OK, so when I get my #42's in I'll pop these on as well and hopefully, as they say, that will be that :)

Now to fix that head gasket leak...... :(

Ha- just got mine out of the shop for the head gasket leak.

@Lucky I meant to say "tuning", not syncing. If you're trying to track down all the possible culprits for slow response and smooth operation, something that's not that obvious would be a headache.
Logged
Destroyed by Design since 2009 http://fallingapartart.com/

- '78 CB750k bobtrack

Offline lucky

  • Really Old Timer ...
  • *******
  • Posts: 6,717
Re: 78 CB750 Slow jets
« Reply #76 on: August 15, 2012, 04:13:01 PM »
Quote from: Kev Nemo on August 15, 2012, 08:02:33 AM
Quote from: Tugboat on August 14, 2012, 02:46:13 PM
Hell yes!! OK, so when I get my #42's in I'll pop these on as well and hopefully, as they say, that will be that :)

Now to fix that head gasket leak...... :(

Ha- just got mine out of the shop for the head gasket leak.

@Lucky I meant to say "tuning", not syncing. If you're trying to track down all the possible culprits for slow response and smooth operation, something that's not that obvious would be a headache.

ALL engine issues must be resolved before you can work on carbs.
Hey,Thanks for letting me know what is going on.

Logged

Offline Kev Nemo

  • Honda Hacker
  • Hot Shot
  • ***
  • Posts: 364
  • http://fallingapartart.com/
    • FallingApartArt
Re: 78 CB750 Slow jets
« Reply #77 on: August 16, 2012, 07:42:13 AM »
Quote from: lucky on August 15, 2012, 04:13:01 PM
ALL engine issues must be resolved before you can work on carbs.
Hey,Thanks for letting me know what is going on.

And with these bikes, when it rains it pours. Now I'm looking at new coils, because my plug wires have reached their cut-down limit, which means I have to get new coils, too. FML
Logged
Destroyed by Design since 2009 http://fallingapartart.com/

- '78 CB750k bobtrack

Offline flybox1

  • My wife thinks I'm a
  • Really Old Timer ...
  • *******
  • Posts: 14,301
Re: 78 CB750 Slow jets
« Reply #78 on: August 16, 2012, 07:55:12 AM »
Quote from: Kev Nemo on August 16, 2012, 07:42:13 AM
Quote from: lucky on August 15, 2012, 04:13:01 PM
ALL engine issues must be resolved before you can work on carbs.
Hey,Thanks for letting me know what is going on.

And with these bikes, when it rains it pours. Now I'm looking at new coils, because my plug wires have reached their cut-down limit, which means I have to get new coils, too. FML
just splice in new wires  8)
Logged
'78 750K (F3 engine) PD42b's, Modified airbox w/K&N  filter, 40/110 jets, 1 needle shim, IMS@ 1 turn out. Kerker + Cone 18" QuietCore

Past Bikes
1974 550K0 (stock), 1973 CB350F (stock), 1983 Yamaha XS400K (POS)
77/78 cool 2 member #3
"Knowledge without mileage equals bullsh!t" - Henry Rollins

"This is my CB. There are many like it, but this one is mine…"

Offline TwoTired

  • Really Old Timer ...
  • *******
  • Posts: 21,805
Re: 78 CB750 Slow jets
« Reply #79 on: August 16, 2012, 10:12:52 AM »
Quote from: Kev Nemo on August 16, 2012, 07:42:13 AM
And with these bikes, when it rains it pours. Now I'm looking at new coils, because my plug wires have reached their cut-down limit, which means I have to get new coils, too. FML

NGK makes ignition wire splicers.
Logged
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline Kev Nemo

  • Honda Hacker
  • Hot Shot
  • ***
  • Posts: 364
  • http://fallingapartart.com/
    • FallingApartArt
Re: 78 CB750 Slow jets
« Reply #80 on: August 16, 2012, 11:18:20 AM »
Quote from: TwoTired on August 16, 2012, 10:12:52 AM
Quote from: Kev Nemo on August 16, 2012, 07:42:13 AM
And with these bikes, when it rains it pours. Now I'm looking at new coils, because my plug wires have reached their cut-down limit, which means I have to get new coils, too. FML

NGK makes ignition wire splicers.

Really- do you have a link?
Logged
Destroyed by Design since 2009 http://fallingapartart.com/

- '78 CB750k bobtrack

Offline TwoTired

  • Really Old Timer ...
  • *******
  • Posts: 21,805
Re: 78 CB750 Slow jets
« Reply #81 on: August 16, 2012, 11:30:14 AM »
Logged
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline CB750F2

  • Hot Shot
  • ***
  • Posts: 645
  • Pat's first Honda 750 F2
Re: 78 CB750 Slow jets
« Reply #82 on: August 16, 2012, 02:35:58 PM »
Z1 Enterprises sells the splicers as well. Pat
Logged
Regards
Pat from Australia

Offline lostmykeys

  • Hot Shot
  • ***
  • Posts: 488
Re: 78 CB750 Slow jets
« Reply #83 on: August 16, 2012, 04:11:44 PM »
Lucky,who did you say brought the brass restictors to you attention?
Logged

Offline lucky

  • Really Old Timer ...
  • *******
  • Posts: 6,717
Re: 78 CB750 Slow jets
« Reply #84 on: August 16, 2012, 04:43:04 PM »
Quote from: lostmykeys on August 16, 2012, 04:11:44 PM
Lucky,who did you say brought the brass restictors to you attention?

Brewsky was the man.
He is very methodical and detail oriented.
He keeps good records too.
Logged

Offline lostmykeys

  • Hot Shot
  • ***
  • Posts: 488
Re: 78 CB750 Slow jets
« Reply #85 on: August 16, 2012, 05:29:24 PM »
Lucky,Are you sure? I have saved Pm's from you that show your exietment when I brought this topic up in May.Should I post them?
Logged

Offline Damfino

  • Sneaky, Evil, Magnificent Bastard of a
  • Really Old Timer ...
  • *******
  • Posts: 5,216
  • Look at the grouse! NYUK,NYUK,NYUK!
Re: 78 CB750 Slow jets
« Reply #86 on: August 16, 2012, 06:51:23 PM »
Quote from: lostmykeys on August 16, 2012, 05:29:24 PM
Lucky,Are you sure? I have saved Pm's from you that show your exietment when I brought this topic up in May.Should I post them?

As per the rules of this forum, that would get you in trouble. I suggest you read the rules of the forum....
Logged
Your Message Here!
You can still call me 'Schmitty'

1976 CB 750
2014 CB 1100DLX
2015 Harley Davidson Freewheeler



You know, a long time ago being crazy meant something. Nowadays everybody's crazy.
Charles Manson

Quote from: Frankenstuff on December 29, 2010, 08:11:48 PM
You've got to watch your back in the SSDB, this is where the clever guys get bored with bike talk and make poo jokes.
I like my women a little big. Natural. Now, they shave this and wax that. It's not right. I love natural women. Big women. This trend in women has to go. Bulomia, anorexia. That's just wrong. You know what will cure that? My special sticky buns. One lick of my sticky buns and your appetite will come right back. ~ RIP Mr. Borgnine  01/24/1917 - 07/08/2012  :'(

Offline lucky

  • Really Old Timer ...
  • *******
  • Posts: 6,717
Re: 78 CB750 Slow jets
« Reply #87 on: August 16, 2012, 07:02:12 PM »
Quote from: lostmykeys on August 16, 2012, 05:29:24 PM
Lucky,Are you sure? I have saved Pm's from you that show your exietment when I brought this topic up in May.Should I post them?

I am trying to figure out what you want LostmyKeys.
What are you thinking?

What I told you is true. Brewsky was rebuilding his carbs and discovered the small pieces of brass tubing in the black hose between the carbs in the accelerator pump circuit and when he told me, I was excited because fortunately I had saved those little black hoses in case I wanted to know the exact length later on. Very fortunate.
« Last Edit: August 16, 2012, 07:06:31 PM by lucky »
Logged

Offline lostmykeys

  • Hot Shot
  • ***
  • Posts: 488
Re: 78 CB750 Slow jets
« Reply #88 on: August 16, 2012, 08:31:03 PM »
 Lucky, I think I was the one to bring those brass restictors to your attention.
  Do I have to prove it !
 Scmuckass,if this forum is against free speach...then speak up and PM me.
 If you dont want to be proven wrong then stfu.
 If I get kicked off of this forum just because I spoke against the the posters with ill info,then maybe I had a chance to wake up those who think for themselves.
 All I'm trying to say is this......if you dont know what your talking about STFU.
 Do you guys realise that there may be thousands of guys looking at this forum and needing help with their new found treasure?
  Give good advice without tooting yor own horn.If you cant provide good advice then STFU.
  If you can respond to this DO IT.
Logged

Offline lucky

  • Really Old Timer ...
  • *******
  • Posts: 6,717
Re: 78 CB750 Slow jets
« Reply #89 on: August 16, 2012, 08:44:12 PM »
Quote from: lostmykeys on August 16, 2012, 08:31:03 PM
Lucky, I think I was the one to bring those brass restictors to your attention.
  Do I have to prove it !
 Scmuckass,if this forum is against free speach...then speak up and PM me.
 If you dont want to be proven wrong then stfu.
 If I get kicked off of this forum just because I spoke against the the posters with ill info,then maybe I had a chance to wake up those who think for themselves.
 All I'm trying to say is this......if you dont know what your talking about STFU.
 Do you guys realise that there may be thousands of guys looking at this forum and needing help with their new found treasure?
  Give good advice without tooting yor own horn.If you cant provide good advice then STFU.
  If you can respond to this DO IT.

Why didn't you just say it was you?

I believe you. It has been a while so I could have got it wrong. Sorry.
The forum is not against free speech.
All you had to do is say it was you that discovered the bras tubes.
No one would challenge you.


Now do We get a hug? Lol..lol
Logged

Offline lostmykeys

  • Hot Shot
  • ***
  • Posts: 488
Re: 78 CB750 Slow jets
« Reply #90 on: August 16, 2012, 08:56:18 PM »
 Lucky,I just like to be called Lostmykeys over Brewsky.
 When you call me Brewski it makes me feel like a lush....which I am...Ha!
Logged

Offline Kev Nemo

  • Honda Hacker
  • Hot Shot
  • ***
  • Posts: 364
  • http://fallingapartart.com/
    • FallingApartArt
Re: 78 CB750 Slow jets
« Reply #91 on: August 17, 2012, 10:53:15 AM »
Logged
Destroyed by Design since 2009 http://fallingapartart.com/

- '78 CB750k bobtrack

Offline lucky

  • Really Old Timer ...
  • *******
  • Posts: 6,717
Re: 78 CB750 Slow jets
« Reply #92 on: August 17, 2012, 10:58:51 AM »
Quote from: lostmykeys on August 16, 2012, 08:56:18 PM
Lucky,I just like to be called Lostmykeys over Brewsky.
 When you call me Brewski it makes me feel like a lush....which I am...Ha!

Sorry "Lost my keys" Lol..lol

But why did you lose the keys? Drinking?
Some kind of metaphysical connections here

Lostmykeys and Brewsky  Came together unintentionally. Hmmmm

Something to contemplate during the day.
Logged

Offline surveywaters

  • Enthusiast
  • **
  • Posts: 118
    • My Project Photos
Re: 78 CB750 Slow jets
« Reply #93 on: July 28, 2013, 01:48:37 PM »
Sorry to drag this thread back up but I found it very informative and specific to my question so this may help others. The press fit slow jets are difficult to find and much more expensive then other pilots, but I cameacross this statement at motorcyclecarbs.com :
---------Honda CB750's and some other late 60's and 70's Hondas with Keihin Carbs have a press in jet that looks like the N424-22. The Press In version is no longer available, but the N424-22 series jet is actually the right jet only it has threads on it. The threads are the right outside diameter, and you can just add a healthy application of blue or purple locktite to seal the threads even though the threaded jet presses in nicely.------

Anyonehave an opinion on this? It's the difference between $8.50 and $42 for the jets.
Logged
1972 SL125,1974 XL125,1975 CB125,1978 CB750k,1978 KZ650,1978 XS650,1985 VT1100,1986 VF700, 2005 XV1700,2003 DL1000,1982 XR250R,1986 ATC70,1987 BW80,1987 XR250R,1999 Z50r,2002 DRZ400s

Offline BobbyR

  • Really Old Timer ...
  • *******
  • Posts: 12,367
  • Proud Owner of the Babe Thread & Dirty Old Man
Re: 78 CB750 Slow jets
« Reply #94 on: July 28, 2013, 06:27:16 PM »
Quote from: surveywaters on July 28, 2013, 01:48:37 PM
Sorry to drag this thread back up but I found it very informative and specific to my question so this may help others. The press fit slow jets are difficult to find and much more expensive then other pilots, but I cameacross this statement at motorcyclecarbs.com :
---------Honda CB750's and some other late 60's and 70's Hondas with Keihin Carbs have a press in jet that looks like the N424-22. The Press In version is no longer available, but the N424-22 series jet is actually the right jet only it has threads on it. The threads are the right outside diameter, and you can just add a healthy application of blue or purple locktite to seal the threads even though the threaded jet presses in nicely.------

Anyonehave an opinion on this? It's the difference between $8.50 and $42 for the jets.
You should give ita try and then put it in Tips and Tricks.
Logged
Dedicated to Sgt. Howard Bruckner 1950 - 1969. KIA LONG KHANH.

But we were boys, and boys will be boys, and so they will. To us, everything was dangerous, but what of that? Had we not been made to live forever?

Offline surveywaters

  • Enthusiast
  • **
  • Posts: 118
    • My Project Photos
Re: 78 CB750 Slow jets
« Reply #95 on: July 29, 2013, 04:51:35 AM »
I did order them and will be sure to update.
Logged
1972 SL125,1974 XL125,1975 CB125,1978 CB750k,1978 KZ650,1978 XS650,1985 VT1100,1986 VF700, 2005 XV1700,2003 DL1000,1982 XR250R,1986 ATC70,1987 BW80,1987 XR250R,1999 Z50r,2002 DRZ400s

Offline TwoTired

  • Really Old Timer ...
  • *******
  • Posts: 21,805
Re: 78 CB750 Slow jets
« Reply #96 on: July 29, 2013, 10:26:51 AM »
Wasn't it Buffo that did the glue in jets thing a few years ago?

Personally, I'd thread the carb bodies rather than glue in.
Logged
Lloyd... (SOHC4 #11 Original Mail List)
72 500, 74 550, 75 550K, 75 550F, 76 550F, 77 550F X2, 78 550K, 77 750F X2, 78 750F, 79CX500, 85 700SC, GL1100

Those that learn from history are doomed to repeat it by those that don't learn from history.

Offline surveywaters

  • Enthusiast
  • **
  • Posts: 118
    • My Project Photos
Re: 78 CB750 Slow jets
« Reply #97 on: July 29, 2013, 03:48:46 PM »
According to the link I posted, the lock tight is not necessary as the od of the threads as well as the short smooth section are the same size as the press in. The lock tight is just to seal the threads.
Logged
1972 SL125,1974 XL125,1975 CB125,1978 CB750k,1978 KZ650,1978 XS650,1985 VT1100,1986 VF700, 2005 XV1700,2003 DL1000,1982 XR250R,1986 ATC70,1987 BW80,1987 XR250R,1999 Z50r,2002 DRZ400s
Pages: 1 2 3 [4]   Go Up
« previous next »