1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

Boost prepping 51ida Weber

Thread Tools
 
Search this Thread
 
Old 10-27-13, 09:22 PM
  #1  
Rx2 > FD

Thread Starter
iTrader: (10)
 
sen2two's Avatar
 
Join Date: Apr 2005
Location: Florida, Orlando
Posts: 3,359
Likes: 0
Received 8 Likes on 8 Posts
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. (Does this mean running a 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 ot 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? If so, how would I go about doing that?

3. Are 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.
Old 10-28-13, 09:48 AM
  #2  
Moderator

iTrader: (3)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,819
Received 2,590 Likes on 1,839 Posts
1. the weber should be pretty good, but i'm sure there is somewhere it'll leak.

2. there are seals on the throttle shaft, so you should just replace these.

3. just make sure everything works, accel pump, make sure the venturies are tight, top cover doesn't leak etc etc
Old 10-28-13, 02:58 PM
  #3  
Rx2 > FD

Thread Starter
iTrader: (10)
 
sen2two's Avatar
 
Join Date: Apr 2005
Location: Florida, Orlando
Posts: 3,359
Likes: 0
Received 8 Likes on 8 Posts
I rebuilt the Weber recently so its in pretty good shape. But how would I remove and replace the seals in the shaft? Never went that far into a Weber rebuild. I have a Weber book and it dosnt mention anything about it at all.
Old 10-30-13, 01:28 PM
  #4  
Full Member
 
FB_rad's Avatar
 
Join Date: Jul 2009
Location: Van Nuys
Posts: 54
Likes: 0
Received 0 Likes on 0 Posts
man, you posted this everywhere, I replied in the other section
Old 10-30-13, 03:07 PM
  #5  
Rx2 > FD

Thread Starter
iTrader: (10)
 
sen2two's Avatar
 
Join Date: Apr 2005
Location: Florida, Orlando
Posts: 3,359
Likes: 0
Received 8 Likes on 8 Posts
Yeah, that was by accident. It kept saying it didn't post, so I would try again. The next day all 3 threads showed up.
Old 10-30-13, 03:11 PM
  #6  
Full Member
 
FB_rad's Avatar
 
Join Date: Jul 2009
Location: Van Nuys
Posts: 54
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by sen2two
Yeah, that was by accident. It kept saying it didn't post, so I would try again. The next day all 3 threads showed up.
doh! no good
Old 10-31-13, 10:15 AM
  #7  
Rx2 > FD

Thread Starter
iTrader: (10)
 
sen2two's Avatar
 
Join Date: Apr 2005
Location: Florida, Orlando
Posts: 3,359
Likes: 0
Received 8 Likes on 8 Posts
When installing my carb hat, should I leave the velocity stacks and auxiliary venturies installed? Or remove them both and install the hat without them?
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Jeff20B
1st Generation Specific (1979-1985)
73
09-16-18 07:16 PM
Bauer778
3rd Generation Specific (1993-2002)
10
11-04-15 04:42 PM
squirrels
1st Generation Specific (1979-1985)
12
09-24-15 03:33 PM
High_Carb_Diet
Power FC Forum
1
09-05-15 09:07 AM



Quick Reply: Boost prepping 51ida Weber



All times are GMT -5. The time now is 10:55 PM.