Friday, October 17, 2014

CB750 DOHC VM34 2-1 carburetor kit Mikuni Sweetness!

  - Introducing the VM34 2-1 dual Mikuni kit.  Increases horsepower and torque-  

-Each kit is test run and synchronized before shipped- 

-This is the best 2-1 Mikuni kit on the market-

 -Direct bolt on kit-

                                      Need more info? Have more questions?  Email or call!


                                                                      541 687 6400
                                             -NO FRAME MODS-FITS STOCK FRAME-






2- Handcrafted and ported 2-1 intakes

2- vm34 carbs jettted for stock or aftermarket exhaust

1- Custom 2-1 throttle cable ( fits stock throttle housing)

2- Oval tapered filters

1- fuel line mount kit


***** New clutch springs are recommended!

    Need more info? have more questions?  Email or call!


  541 687 6400



Thursday, October 16, 2014

VM34 Mikuni CX500 CX650 Kit info and upgrades GL650 GL500


 We have a few other upgrades that work fantastic wit the VM34 kit. We can bundle together or purchase separately when you need them. All parts are available on the website or direct.

 
 The new system bolts on in about 20-30 minutes and increases throttle response and adds HP and Torque throughout the rpm range.
 The kit Includes the following.
2 new Modified  Mikuni 34 mm carbs pre-jetted run and tested adjusted and balanced
2 new tuned length intake manifolds
2 new Mikuni spigot mounts
2 new Lifetime washable oil able  4 ply cotton oval pod filter with clamp
1 new Custom made throttle cable
Installation hardware and new viton o-rings
Fuel line and brass splitter t
All carb kits are test run and synced before shipment.
 You will need nothing else to install the system
Iridium ngk spark plugs  are recommended http://www.speedmotoco.com/CX500-NGK-Iridium-Plug-Kit-p/dr8eix.htm
 Raising the main needle to tweak for more mid range and top end

Fuel Filter is recommended  http://www.speedmotoco.com/product-p/43-15-3.htm
 Heavy duty clutch springs are recommended  (Kit adds torque and clutch slippage may result. It is a good idea to do this with installation of kit.) http://www.speedmotoco.com/cx500-gl500-cx650-cx650-clutch-spring-heavy-duty-p/smc-hd14.htm
If you need brass rods for the cap we have them on our website or contact us below.
  Any Questions? email or call us!


shop@speedmotoco.com

541 687 6400 

CX500 CX650 GL Brass Rod Upgrade

  Link to Rod in Our store  http://www.speedmotoco.com/CX500-CX650-GL-CX-Brass-rod-upgrade-p/smc-brass.htm


Note: Even one bad spark plug. One bad plug cap or one bad HT coil lead or bad coil can stop the engine under load from revving above around 5,000 rpm/60 Mph Approx. Also see this thread,

For cheap CDI coil replacements (not Transistor Ignition Coils (TI))



Using a Digital Multimeter on a 20k setting a Resistor Spark plug should have a reading of around 5K [5,000 ohms) between the brass plug holder and the Ignition Wire screw.



On the USA based CX?GL bikes, there is a resistor inside the spark plug cap that can cause a lot of problems with the ignition system and the strength of the spark delivered to the spark plug. There is a simple cure for this. Remove all the internal components inside the cap and change out the resistor and the aluminum rod with a length of brass or aluminum rod equal to the length of the 2 parts combined. This is a good process to also just check to see if you have a lot of corrosion inside the assembly also. It can cause a high resistance in the delivery of the spark, and should be cleaned well if you do not want to change out the rods as shown below.
I have been running these brass rods for about 4 years now, and have had no issues at all. It works.

Inside the tip you will see a the brass end that clips onto the plug. It's threaded into the cap itself and will need to be removed.
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Make sure you use a wide flat blade screw driver that is also thick enough to make good contact in the slot so it does not slip and round off the brass slot.


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When you get the threaded cap out you will find the resistor, an aluminum rod, and the tension spring under it, in that order.


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Notice in this picture the dark colored resistor. This one came out of a cap that had a lot of corrosion inside it, and was causing a lot of heat and resistance in it. This is a good sign there was a problem with how the bike ran.

Now for the cure. The brass rod is the replacement for the resistor inside the cap. It is the total length of the 2 combined. The total length of the brass rod is 2.170 inch, and the diameter is .190 inch. I used a section of brass welding rod I got from a welding supply shop. You can use aluminum rod also. Before you put these parts back in, make sure you clean out the inside very well. I used a long thin flat screw driver and twisted and cleaned out the contact until I could see clean metal inside it so the spring makes good contact, as well as a thin brass bottle brush to remove all the corrosion. Use a good electric contact grease or a battery anti corrosion compound found at most auto parts stores when you reassemble it.


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If you have a rod that is stuck inside, as a lot of them are, due to corrosion, you can drill it out if you have the right equipment. I used a 1/8" drill bit with tape built up on it so it stayed centered and drilled a hole down the center of it. Followed with a long 1/8th bit to get it all the way through until I felt it go through the end and into the spring area. Be ready to stop when you get near the end so you don't mess up the spring. Now I followed it up with a drill bit of 13/64th or a #4, .208 thousandths, to drill out the remainder of the aluminum from the inside of the cap. Make sure you keep it centered so it does not mess up the threads where the brass clip cap threads into. Be careful also, to make sure you keep it centered so it does not angle off and drill out the plastic cap. This worked very well for me while I was getting a cap ready for Blindstitch. He has been waiting patiently for a set to replace his bad caps.


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This is the pile left from drilling out the stuck rod from all the corrosion that had it stuck inside.


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Be careful and take care to clean all the components well, and you will have a good solid spark delivery to your plugs.
Hope this helps you out and cures a bit of your ignition issues.
Larry


Here is a cutaway of a plug cap posted by Blindstitch:


Just made this quick mock up of why the mod is important. Any one of those interior pieces can corrode and cause resistance. Larry provided the actual cut in half portion of the cap. The rest is all photoshop and random parts of pieces online.

Resized to 45% (was 1023 x 443) - Click image to enlarge
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Some just have a long spring and no aluminum rod.
Resized to 45% (was 1023 x 443) - Click image to enlarge
Posted Image
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Wednesday, November 13, 2013

Café racer fairing installation instructions...so easy, even my fish can do it!

Monday, October 7, 2013

RD400. It just looks good.


Monday, April 1, 2013

7" headlamp headlight w clip install directions!


1) set headlamp housing down into the chrome ring
2) one "end" of the spring you'll hook up into the curled lip of the ring, with the "bendy bit" down against the lamp as the above picture shows.
3) using fingers, pliers, etc mash down on the other end of the spring, forcing it "wider" and then hook it up into the lip of the headlamp
ring.  
4) repeat until you've got it clipped all around.  
viola!

Friday, December 7, 2012

Honda CB750


You can contact us at:
or by phone at (541) 687-6400.



COMPLETE 750 F2 CYLINDER HEAD REBUILD PROGRAM

Featuring:
New Stainless steel valves. New Bronze valve guides. Matching seats to the ports. Serdi radius valve job Surface for clean up New seals.

$699.00



The big dog engine kit. 1000cc performance engine kit.

This kit includes a 10.5:1 c.r. 1000cc forged big bore piston kit with sleeves. H370 billet cam, performance valve spring kit, titanium retainers, adjustable cam sprockets, Carrillo billet H beam rods, and heavy duty cylinder studs. Complete match components at a kit price.

$2373.05




Carrillo Connecting Rods

Fully CNC machined from chrome moly forgings, Carrillos are the strongest rods available for motorcycles. Why risk distruction of the complete lower end when Carrillos provide that extra cushion of protection.

#CAR033 - SOHC 750 (K MODEL) - $967.50 set of four


You can contact us at:
or by phone at (541) 687-6400.