Boost prepping 51ida Weber

sen2two · 10-24-2013, 07:53 PM

Im looking to boost prep my 51ida weber (7-10psi max on stock s5 turbo). From what I read I need to do 2 things for sure.*

1. Vent the fuel bowl into the carb hat so it sees the equal pressure. (Line from fuel bowl to carb hat area?)

2. Swap the brass float for a plastic float. Because the brass float will crush above 6psi. The plastic float is good until 20psi.

Other things I have read are unclear. Its obvious that i need to seal any and all areas that can leak. But what areas do these include?*

1. What else besides the "hat" needs to be a sealed?

2. Do I have to seal the throttle shaft?

3. Is there any other modifications to the weber that need to be addressed?*

I have everything else ready to go. I just want to be sure I get my weber in order before setting it all up.

sen2two · 11-25-2013, 07:28 PM

No help here?

730RWHP12A · 12-08-2013, 11:30 AM

3.3 needle valve, machine carb top to flow more fuel, enlarge float bowl, if the carb hat is made properly you dont need to vent float bowl, (like the carb hats i sell) phenolic float.. i sell i complete IDA boost prep kit, comes with all parts needed and instructions..

10-24-2013, 07:53 PM	#1
sen2two KTEC Join Date: Jan 2009 Posts: 642 Rep Power: 0	Boost prepping 51ida Weber Im looking to boost prep my 51ida weber (7-10psi max on stock s5 turbo). From what I read I need to do 2 things for sure.* 1. Vent the fuel bowl into the carb hat so it sees the equal pressure. (Line from fuel bowl to carb hat area?) 2. Swap the brass float for a plastic float. Because the brass float will crush above 6psi. The plastic float is good until 20psi. Other things I have read are unclear. Its obvious that i need to seal any and all areas that can leak. But what areas do these include?* 1. What else besides the "hat" needs to be a sealed? 2. Do I have to seal the throttle shaft? 3. Is there any other modifications to the weber that need to be addressed?* I have everything else ready to go. I just want to be sure I get my weber in order before setting it all up. __________________ what I have: 1985 Gs:12a All motor Drag car - 1973 Rx2: Play car What I had: 93 Touring: TRADED - 91 Coupe: TRADED - 90 GTU: RHD - 88 10AE: SOLD - 87 Base: SOLD - 86 Base: SOLD - 1985 GSLSE - 85 Gsl: SOLD - 80 Gs: TRADED - 1972 Rx2

11-25-2013, 07:28 PM	#2
sen2two KTEC Join Date: Jan 2009 Posts: 642 Rep Power: 0	No help here? __________________ what I have: 1985 Gs:12a All motor Drag car - 1973 Rx2: Play car What I had: 93 Touring: TRADED - 91 Coupe: TRADED - 90 GTU: RHD - 88 10AE: SOLD - 87 Base: SOLD - 86 Base: SOLD - 1985 GSLSE - 85 Gsl: SOLD - 80 Gs: TRADED - 1972 Rx2

12-08-2013, 11:30 AM	#3
730RWHP12A Rotary Fanatic Join Date: Mar 2008 Location: chatsworth, california Posts: 349 Rep Power: 17	3.3 needle valve, machine carb top to flow more fuel, enlarge float bowl, if the carb hat is made properly you dont need to vent float bowl, (like the carb hats i sell) phenolic float.. i sell i complete IDA boost prep kit, comes with all parts needed and instructions.. __________________ rotaryshack.com