ih c301 carb problem February 02, 2014 09:05AM
I have a c301 bored to 4" about 10 to 1 compression, stock carb. I should have about 110 hp with what I have done. But on dyno I get to about 80-85 hp and it runs out of gas. What options do I have to fix the problem. I have to use stock IH carb. Need all advice I can get. Thanks Jim Lee
Reply Quote

Re: ih c301 carb problem February 02, 2014 09:11AM
Have you drilled the main jet out any?
Reply Quote

Re: ih c301 carb problem February 02, 2014 09:46AM
Yes and I have drilled the seat out and made a bigger needle to get more fuel in the bowl. It seems that I am sucking the bowl dry. I think I need to get more flow to the carb but wanted to know how to best get it done if you guys agree that's my problem. Thanks
Reply Quote

Re: ih c301 carb problem February 02, 2014 09:52AM
Electric fuel pump.
Reply Quote

Re: ih c301 carb problem February 02, 2014 10:03AM
I did not want to use a pump if I don't have to. If I have no other choice what psi should I buy?
Reply Quote

Re: ih c301 carb problem February 02, 2014 10:08AM
I have a used Summit pump, with gauge and regulator for $100. That way you can set to what ever pressure you want. I would run as high as you need to feed the carb, but not push the float open when bowl is full. I ran 6-8 on a big Stromberg.
Reply Quote

Re: ih c301 carb problem February 02, 2014 10:17AM
I know alot of these engines have been built, and alot more horse and compression, does everyone just use a pump?
Reply Quote

Re: ih c301 carb problem February 02, 2014 10:21AM
Treadwell carb makes a needle and seat that uses a ball if that don't work buy a pump
Reply Quote

Re: ih c301 carb problem February 02, 2014 11:17AM
They all run electric pumps.
Reply Quote

Re: ih c301 carb problem February 03, 2014 01:36AM
Try drilling the air jet or air vent this sometimes restricts the fuel flow. Another thing is the tractor have a bowl on it still if so this will restrict the fuel needed . take bowl off and add a stainless screen filter. I would try these things. You shouldn't need a pump
Reply Quote

Re: ih c301 carb problem February 03, 2014 12:09PM
take a die grinder and grind out the bowl you would be surprised how much more gas you can make it hold
Reply Quote

Re: ih c301 carb problem February 04, 2014 11:20AM
I had a simular problem and what farmmagedon says helps but i still needed a fuel pump! I just got a 2-4psi inline pump from car quest,put a plastic inline fuel filter before the pump and it took care of my problem. You could try making sure you have a good angle down ward from tank to carburator first for proper gravity flow if you don't want to use a pump and see if that works??
Reply Quote

Re: ih c301 carb problem February 05, 2014 08:22AM
I ordered a pump monday 2.5-4.5 psi. Will try it to see if it solves my problem which I am sure it will. Then I will see if I call get it to work without it using larger lines,no bends etc. Thanks everyone for the help electric pump sounds like the easy way & maybe the only way. Jim Lee
Reply Quote

Newer Topic Older Topic

Author:

Your Email:


Subject:
Spam prevention:
Please, enter the code that you see below in the input field. This is for blocking bots that try to post this form automatically. If the code is hard to read, then just try to guess it right. If you enter the wrong code, a new image is created and you get another chance to enter it right.
Message:
Website Statistics
Global: Topics: 38,698, Posts: 229,797, Members: 3,329.
This forum: Topics: 37,081, Posts: 225,950.

Our newest member CBeard