86 Fourtrax 4x4 disc brake install - Honda Foreman Forums : Rubicon, Rincon, Rancher and Recon Forum

move · 04-11-2011, 10:33 AM

Just thought I would post a picture or two for those who might be iterested in doing this upgrade.
The kit is from Superatv.

I might swap the calipars to the front to help with brakeline clearance. If you do this just make sure you have the bleeder valve to the top.
The only headache I have ran into is from the atvs front brakes not working for years. The lines have rusted on the inside and no one has this model brake lines any more (1986-1989) I am having to adapt parts off of different years and bend my own lines.

PS. you must use a 12" rim to clear the calipars.

rc51 · 04-11-2011, 05:24 PM

so how is it holding up? any problems yet?

move · 04-11-2011, 05:56 PM

As for the atv?

It's great, I posted a video of some mud pit riding in the video gallery. I was having problems with the carb, but when I swapped it over to a pulse drive fuel pump all my carb problems went away! The fuel pump was pushing too much pressure and not enough volume.

Here is a picture of the pulse drive fuel pump. (some call them vacuum driven, but they can be driven off vacuum or crank case pressure also) I tapped one of the rocker inspection covers to get the pulse pressure. Please excuse the lack of zip ties! I just have it roughly plumbed until I made sure it was working properly. I will have all the hoses zip tied out of the way and hidden.

PS. I was clocked doing 35mph with the carb acting up. I hope to better that this weekend.

rc51 · 04-12-2011, 06:06 PM

Quote:

Originally Posted by move

As for the atv?
I was having problems with the carb, but when I swapped it over to a pulse drive fuel pump all my carb problems went away! The fuel pump was pushing too much pressure and not enough volume.

Here is a picture of the pulse drive fuel pump. (some call them vacuum driven, but they can be driven off vacuum or crank case pressure also) I tapped one of the rocker inspection covers to get the pulse pressure. Please excuse the lack of zip ties! I just have it roughly plumbed until I made sure it was working properly. I will have all the hoses zip tied out of the way and hidden.

PS. I was clocked doing 35mph with the carb acting up. I hope to better that this weekend.

What is your fuel pressure on that style pump? did you have to regulator?

move · 04-12-2011, 11:11 PM

No regulator, they only produce volume of 14lph and techincally incapable of producing more fuel pressure than the engine can use. Being that it is powered by the crankcase pressure or the vacuum pressure for the given engine rpm.

The fuel pump I am using is sold for jet skies but I'm sure a smaller pump off a Arctic Cat would work. (Just more exspensive) here is a link to the pump I purchased.

Mikuni Single Fuel Pump - DennisKirk.com=

Hint: Go ahead and pull the line going into the carb (out of the pump) and wrap your lips around it! Give it a good slirp and get some of that nasty pump gas in your mouth! LoL Then try to crank it. That's to purge the air out of the pump to get the system going.

rich450es · 04-12-2011, 11:26 PM

Quote:

Originally Posted by move

No regulator, they only produce volume of 14lph and techincally incapable of producing more fuel pressure than the engine can use. Being that it is powered by the crankcase pressure or the vacuum pressure for the given engine rpm.

The fuel pump I am using is sold for jet skies but I'm sure a smaller pump off a Arctic Cat would work. (Just more exspensive) here is a link to the pump I purchased.

Mikuni Single Fuel Pump - DennisKirk.com=

Hint: Go ahead and pull the line going into the carb (out of the pump) and wrap your lips around it! Give it a good slirp and get some of that nasty pump gas in your mouth! LoL Then try to crank it. That's to purge the air out of the pump to get the system going.

i remember when gas was leaded i tasted better lol

move · 04-13-2011, 08:26 AM

Quote:

Originally Posted by rich450es

i remember when gas was leaded i tasted better lol

Gas today leaves such a horrid after taste! LoL I pefer 116 leaded race gas.

move · 04-17-2011, 09:16 PM

Went for a long ride today and the brakes broke in nicely. I managed to throw myself into the handle bars one or two times. Disc brakes are the only way to go if you ride in a lot of mud.

jyatesmp · 11-30-2011, 12:01 PM

can you post what part numbers you used upto and including the rims for this?

also what part number is the pump?

rich450es · 11-30-2011, 12:10 PM

welcome to the forum
this is the kit that he used for the brakes and i dont know what wheels he used but thay will need to be 12in wheels
Honda Foreman Front Disc Brake Kit : Honda : Foreman : Brake Kit

04-11-2011, 10:33 AM	#1 (permalink)
move Honda Rider Join Date: Mar 2011 Location: Philadelphia, MS. Posts: 23	86 Fourtrax 4x4 disc brake install Just thought I would post a picture or two for those who might be iterested in doing this upgrade. The kit is from Superatv. I might swap the calipars to the front to help with brakeline clearance. If you do this just make sure you have the bleeder valve to the top. The only headache I have ran into is from the atvs front brakes not working for years. The lines have rusted on the inside and no one has this model brake lines any more (1986-1989) I am having to adapt parts off of different years and bend my own lines. PS. you must use a 12" rim to clear the calipars.

04-11-2011, 05:24 PM	#2 (permalink)
rc51 Honda Red Wing Rider Join Date: Jul 2009 Location: Badger Country Posts: 536	so how is it holding up? any problems yet? __________________ 2004 Rubicon Warn 424 select Mudbuster cam High Lifter springs Warn 3500 RT Winch Front disc conversion RC51 rear disc conversion ITP 589 Mud and Snow tires HID lights 2" Air Intake snorkel Camo fender Tape

04-11-2011, 05:56 PM	#3 (permalink)
move Honda Rider Join Date: Mar 2011 Location: Philadelphia, MS. Posts: 23	As for the atv? It's great, I posted a video of some mud pit riding in the video gallery. I was having problems with the carb, but when I swapped it over to a pulse drive fuel pump all my carb problems went away! The fuel pump was pushing too much pressure and not enough volume. Here is a picture of the pulse drive fuel pump. (some call them vacuum driven, but they can be driven off vacuum or crank case pressure also) I tapped one of the rocker inspection covers to get the pulse pressure. Please excuse the lack of zip ties! I just have it roughly plumbed until I made sure it was working properly. I will have all the hoses zip tied out of the way and hidden. PS. I was clocked doing 35mph with the carb acting up. I hope to better that this weekend. Last edited by move; 04-11-2011 at 06:00 PM.

04-12-2011, 11:11 PM	#5 (permalink)
move Honda Rider Join Date: Mar 2011 Location: Philadelphia, MS. Posts: 23	No regulator, they only produce volume of 14lph and techincally incapable of producing more fuel pressure than the engine can use. Being that it is powered by the crankcase pressure or the vacuum pressure for the given engine rpm. The fuel pump I am using is sold for jet skies but I'm sure a smaller pump off a Arctic Cat would work. (Just more exspensive) here is a link to the pump I purchased. Mikuni Single Fuel Pump - DennisKirk.com= Hint: Go ahead and pull the line going into the carb (out of the pump) and wrap your lips around it! Give it a good slirp and get some of that nasty pump gas in your mouth! LoL Then try to crank it. That's to purge the air out of the pump to get the system going. Last edited by move; 04-12-2011 at 11:19 PM.

11-30-2011, 12:10 PM	#10 (permalink)
rich450es Honda Red Wing Rider Join Date: Nov 2010 Location: ludlow,mass Posts: 10,645	welcome to the forum this is the kit that he used for the brakes and i dont know what wheels he used but thay will need to be 12in wheels Honda Foreman Front Disc Brake Kit : Honda : Foreman : Brake Kit __________________ 2000 foreman 450 es-s the fking pig 14% 300 foretrax gear reduction 30in gorila silverbacks on C-5 wheels 2500lb warn winch superatv disk brake conversion kit 2in ssatv lift kit and progressive 512 shocks the original 4in PVC storage tube hurculined racks with rear cargo box czr loud exhaust , uni airfilter and drilled main jet foreman 450 parts for sale pm me for info**

04-17-2011, 09:16 PM	#8 (permalink)
move Honda Rider Join Date: Mar 2011 Location: Philadelphia, MS. Posts: 23	Went for a long ride today and the brakes broke in nicely. I managed to throw myself into the handle bars one or two times. Disc brakes are the only way to go if you ride in a lot of mud.

11-30-2011, 12:01 PM	#9 (permalink)
jyatesmp Honda Rider Join Date: Nov 2011 Posts: 1	can you post what part numbers you used upto and including the rims for this? also what part number is the pump?

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