Carburetor Drilled Return Pressure Balancing Modification GPR, XLT, GP, SUV, etc.

[Speed Life]

sounds like insurance though. Anyone have the 95 main i can buy

[Speed Life]

where can i get the 95 main for this mod

Older style 1100 carbs, return to tank nipple on carbs

[WFO]

I have some

pm me

[Speed Life]

done

I have some

pm me

[lippyat13]

can I use the original main jet for this mod? it was a 117.5

[GpaaH]

can I use the original main jet for this mod? it was a 117.5

Yes, If it's a 95.

Why don't we start with what specific ski you're talking about.

I'm presuming GPR.

[lippyat13]

can I use the original main jet for this mod? it was a 117.5

Yes, If it's a 95.

Why don't we start with what specific ski you're talking about.

I'm presuming GPR.

2005 XLT 1200. I just picked up a 95 main jet

[FTPPNET]

1998 Yamaha XL1200. I was reading about the fuel line restriction modification and wanted to know which jet I should put in my return line. I fried my #1 piston and do not know if it was due to a fueling failure to bad settings on my carbs. Thanks in advance!

[jhawker23]

I have a '00 SUV and completed the mod with a 105. However I'm at high altitude, 8,000', and the last time out it was fuel starved. I have to reduce pop off pressure but also wondering if this mod doesn't have the right jet size for my situation.

Can I take the pressure reading on the hose or is fuel pressure also affected by load?

[Cutlass]

1998 Yamaha XL1200. I was reading about the fuel line restriction modification and wanted to know which jet I should put in my return line. I fried my #1 piston and do not know if it was due to a fueling failure to bad settings on my carbs. Thanks in advance!

You have the 65U engine. The jet you want is 105.

[Cutlass]

I have a '00 SUV and completed the mod with a 105. However I'm at high altitude, 8,000', and the last time out it was fuel starved. I have to reduce pop off pressure but also wondering if this mod doesn't have the right jet size for my situation.

Can I take the pressure reading on the hose or is fuel pressure also affected by load?

You can measure fuel pressure upstream of the 105 jet. The pressure will increase with RPM. There is a spec for this but I can't remember it. It is some thing like 1-2 psi at idle and 5-6 psi WOT/high rpms.

[Destructive429]

I run blackjacks on my RA1100 is this mod good for all triple setups? I have 1 pump/pulse per carb.

[Mpeavler]

Correct 5-6 at wot is desired 1-2 is good at idle .

[mattc8821]

Searched around for this, but didnt really see much info on it. If you do this drilled return mod, are you supposed to keep accelerator pump on? Or does it not matter if it comes off after this mod is done?

[Dave in DE]

I did this mod and left pump on. It only balances the fuel pressure between carbs nothing for really for runablity.