| View previous topic :: View next topic |
| Author |
Message |
Jimmy McNeil
Joined: 12 Apr 2006
Posts: 1479
Location: United States, California, visalia
|
|
| Back to top |
|
 |
Ken Schilling
Joined: 01 Dec 2005
Posts: 1351
|
 Posted: Sat Jan 21, 2012 1:53 pm Post subject: |
 |
|
| Jimmy McNeil wrote: | And while im on my rant, the new system is about 10% of the upkeep as the pump around. I use to take apart the pumps to clean them before every race. With the new system the pumps pulse inlet is facing down, any oil that gets into the system drains down out of the pumps.
This year, I pulled the lines off the pumps about 3 times all year to let the oil run out. |
^+1!!!
I also used to run a pump around and cleaned them of oil buildup each day. This was a pain...
The GFS system with the pulse inlet facing down, uses gravity for oil collection. This allows me to very quickly remove the pulse line from each pump, quickly shoot a squirt of carb clean up each pulse line to drain the oil and reattach. I use clear pulse line so I can easily see any oil buildup. No need to zip tie the pulse lines to the pump(s) either, just pull off/push on. This convenience and problem prevention is almost worth the cost alone... Of course the other performance benefits are just as important though!!!
_________________
Ken Schilling
#21x / S4 / ProKart Challenge (PKC)
SKUSA Data Administrator
Good luck is where preparation and opportunity meet!!!
The opinions I express are mine alone and do not reflect those of any organization of which I am a member. |
|
| Back to top |
|
|
Greg Lindahl
Joined: 13 Jan 2011
Posts: 271
|
| Posted: Mon Jan 23, 2012 11:17 am Post subject: |
|
|
Tap 1/8 NPT threads in the top and bottom of the common pump manifold and drain the oil from the chamber regularly.
The length of the pulse hose determines how quickly and if oil reachs the chamber, if the pump is above the pulse line on the engine.
Harmonics pumps the oil uphill if the hose is not "tuned" the right length. |
|
| Back to top |
|
|
Chris Reinhardt
Joined: 29 Aug 2002
Posts: 2951
Location: United States, New York, Ossining
|
| Posted: Mon Jan 23, 2012 12:23 pm Post subject: |
|
|
| Greg Lindahl wrote: | Tap 1/8 NPT threads in the top and bottom of the common pump manifold and drain the oil from the chamber regularly.
The length of the pulse hose determines how quickly and if oil reachs the chamber, if the pump is above the pulse line on the engine.
Harmonics pumps the oil uphill if the hose is not "tuned" the right length. |
The later style double pumpers have a set screw opposite of the pulse line nipple. All that has to be done is pull off the pulse line, unscrew the set screw, spray some brake in it, put it back together. No more than a 5 minute job....
CR
_________________
East Coast Super Kart Series
"This is how we roll!"
www.eastcoastsuperkart.webs.com
CR2 Motorsports
"Home of Cobalt Superkarts"
www.CR2MotorSports.webs.com |
|
| Back to top |
|
|
Greg Lindahl
Joined: 13 Jan 2011
Posts: 271
|
| Posted: Mon Jan 23, 2012 4:41 pm Post subject: |
|
|
| Cool! |
|
| Back to top |
|
|
Mike Goebel
Joined: 28 Jul 2001
Posts: 5795
Location: United States, California, Winnetka
|
| Posted: Mon Jan 23, 2012 4:44 pm Post subject: |
|
|
| Chris Reinhardt wrote: | No more than a 5 minute job....
CR |
That's gotta include a bathroom break! 
Mike G. |
|
| Back to top |
|
|
Tom Barth
Joined: 22 Oct 2001
Posts: 1399
Location: United States, Michigan, Waterford
|
| Posted: Mon Jan 23, 2012 5:53 pm Post subject: |
|
|
Why not use a Dellorto fuel pump and eliminate hoses, tanks and draining?
_________________
Tom Barth
http://www.greenflagkarting.com/
Power is good...more power is better... too much power is just right! |
|
| Back to top |
|
|
Chris Reinhardt
Joined: 29 Aug 2002
Posts: 2951
Location: United States, New York, Ossining
|
| Posted: Mon Jan 23, 2012 6:01 pm Post subject: |
|
|
| Mike Goebel wrote: | | Chris Reinhardt wrote: | No more than a 5 minute job....
CR |
That's gotta include a bathroom break!
Mike G. |
That included a liter break
| Tom Barth wrote: | | Why not use a Dellorto fuel pump and eliminate hoses, tanks and draining? |
Because it doesn't cost $700 
CR
_________________
East Coast Super Kart Series
"This is how we roll!"
www.eastcoastsuperkart.webs.com
CR2 Motorsports
"Home of Cobalt Superkarts"
www.CR2MotorSports.webs.com |
|
| Back to top |
|
|
Spencer Uzri
Joined: 18 Apr 2006
Posts: 798
|
| Posted: Tue Jan 24, 2012 2:50 am Post subject: |
|
|
| What is the cost comparison for a Keihin PWM/PWK + GFS v. Dellorto carb (which can handle a Mikuni pump)? |
|
| Back to top |
|
|
Chris Reinhardt
Joined: 29 Aug 2002
Posts: 2951
Location: United States, New York, Ossining
|
| Posted: Tue Jan 24, 2012 7:47 am Post subject: |
|
|
| Spencer Uzri wrote: | | What is the cost comparison for a Keihin PWM/PWK + GFS v. Dellorto carb (which can handle a Mikuni pump)? |
The Dellorto carb is not legal in stock Honda, what's the point of the comparison?
_________________
East Coast Super Kart Series
"This is how we roll!"
www.eastcoastsuperkart.webs.com
CR2 Motorsports
"Home of Cobalt Superkarts"
www.CR2MotorSports.webs.com |
|
| Back to top |
|
|
Steve Buckner
Joined: 22 Apr 2003
Posts: 839
|
| Posted: Tue Jan 24, 2012 12:15 pm Post subject: |
|
|
| Tom Barth wrote: | | Why not use a Dellorto fuel pump and eliminate hoses, tanks and draining? |
Thats what I did and It works Great. Cost $48.69 |
|
| Back to top |
|
|
Spencer Uzri
Joined: 18 Apr 2006
Posts: 798
|
| Posted: Tue Jan 24, 2012 7:45 pm Post subject: |
|
|
| Chris Reinhardt wrote: | | Spencer Uzri wrote: | | What is the cost comparison for a Keihin PWM/PWK + GFS v. Dellorto carb (which can handle a Mikuni pump)? |
The Dellorto carb is not legal in stock Honda, what's the point of the comparison? |
Just an observation regarding to the supposed "low-cost" argument for the Keihin.
The Keihin was chosen for stock moto because it was a) part of the OEM '99 CR125 pkg & (supposedly) b) because it cost less than a Dellorto. If the Keihin needs a GFS to operate as smooth as a Dellorto (which works with the Mikuni pump), then what is the cost comparison?
John Denman has said more than once that he favored the Dellorto over the Keihin when the rules were being drawn up, but the die is cast now.
Last edited by Spencer Uzri on Wed Jan 25, 2012 6:03 pm, edited 1 time in total |
|
| Back to top |
|
|
Chris Reinhardt
Joined: 29 Aug 2002
Posts: 2951
Location: United States, New York, Ossining
|
| Posted: Tue Jan 24, 2012 8:33 pm Post subject: |
|
|
| Spencer Uzri wrote: | Just an observation regarding to the supposed "low-cost" argument for the Keihin.
The Keihin was chosen for stock moto because it was a) part of the OEM '99 CR125 pkg & (supposedly) b) because it cost less than a Dellorto. If the Keihin needs a GFS to operate as smooth as a Dellorto (which works the cost comparison with the Mikuni pump), then what is the cost comparison?
John Denman has said more than once that he favored the Dellorto over the Keihin when the rules were being drawn up, but the die is cast now. |
I think it was chosen because at the time it was by far the most popular carb on the Honda motors, easily available/supported, and nearly everyone knew how to tune it.
CR
CR
_________________
East Coast Super Kart Series
"This is how we roll!"
www.eastcoastsuperkart.webs.com
CR2 Motorsports
"Home of Cobalt Superkarts"
www.CR2MotorSports.webs.com |
|
| Back to top |
|
|
Benn Herr
Joined: 18 Jul 2001
Posts: 1584
|
| Posted: Tue Jan 24, 2012 8:46 pm Post subject: |
|
|
| Spencer Uzri wrote: | | Chris Reinhardt wrote: | | Spencer Uzri wrote: | | What is the cost comparison for a Keihin PWM/PWK + GFS v. Dellorto carb (which can handle a Mikuni pump)? |
The Dellorto carb is not legal in stock Honda, what's the point of the comparison? |
Just an observation regarding to the supposed "low-cost" argument for the Keihin.
The Keihin was chosen for stock moto because it was a) part of the OEM '99 CR125 pkg & (supposedly) b) because it cost less than a Dellorto. If the Keihin needs a GFS to operate as smooth as a Dellorto (which works the cost comparison with the Mikuni pump), then what is the cost comparison? |
Keihin PWM $219.95
Plastic "tee" $0.50
Fuel Line $2.00
Mikuni Round Fuel Pump $32.99
Total $255.44
Keihin PWM $219.95
Fuel Line $2.00
Dellorto Bypass Fuel Pump $48.69
Total $270.65
Keihin PWM $219.95
Small Inlet Seat $24.95
Fuel line $2.00
Mikuni Round Fuel Pump $32.99
Total $279.89
Keihin PWM $219.95
Magic Can (used) $25.00
Fuel line $2.00
Mikuni Round Fuel Pump $32.99
Total $279.94
Keihin PWM $219.95
Pump-Around Conversion $179.00
Fuel line $4.00
Mikuni Round Fuel Pumps (included in conversion price)
Total $402.95
Keihin PWM $219.95
Swedetec GFS System $399.99
Fuel line $4.00
Total $623.94
Side note: The PWK is $10.00 cheaper.
There is your comparison. Some people spend more money on their kart, it's because they want to. Nobody is making them.
Any of the systems will work if you take care of them. Any of them will let you down if you don't take care of it.
You pays your money and you takes your chances!
_________________
Benn Herr
Come see our Superkart Build Off @
http://www.lostenduros.com/?page_id=1534
beherr3@cox.net
http://www.southwestkarters.com/
http://www.lostenduros.com/
Kart Design
Chandler, Az. |
|
| Back to top |
|
|
Jimmy McNeil
Joined: 12 Apr 2006
Posts: 1479
Location: United States, California, visalia
|
| Posted: Tue Jan 24, 2012 9:00 pm Post subject: |
|
|
| Ive heard the 38mm Dellorto is around $400. |
|
| Back to top |
|
|
|
FAQ
Search
Memberlist
Usergroups
Register
Profile
Login to check your private messages
Login
