Pre 84 Trucks 1st gen pickups

Weber jet size for 20R?

Thread Tools
 
Search this Thread
 
Old 07-02-2015, 12:15 PM
  #1  
ZXT
Registered User
Thread Starter
 
ZXT's Avatar
 
Join Date: Jul 2014
Location: West of DFW
Posts: 46
Likes: 0
Received 0 Likes on 0 Posts
Weber jet size for 20R?

Hey everyone, just yanked off the stock carb from my 80. I was tired of 12 MPG in town and 10 on the highway. Over about 1/2 throttle when accelerating it would just spit and spudder and 0-60 was 27 seconds.

I have 2 weber 32/36's that I bought for $40 on a Z intake and had them on my 260z for a while until i put a 4 barrel on it. I have never had them apart, so i took them apart and cleaned them. Not much cleaning needed to be done. Bowl was clean, passages clean, ect.

Installed it with the redline kit (Heard bad things about them but it seems to be working pretty good) and WOW, the sound and increase in acceleration are amazing.

It needs some tuning though. A little touchy off of idle until its warmed up good, and when I floor it and get it into the secondary it pours quite a bit of black smoke. I assume I need to rejet it, but what do yall think?

What would you suggest, and those running Weber's, what size jets are you running?

Thank you!

Last edited by ZXT; 07-02-2015 at 12:17 PM.
Old 07-02-2015, 08:48 PM
  #2  
ZXT
Registered User
Thread Starter
 
ZXT's Avatar
 
Join Date: Jul 2014
Location: West of DFW
Posts: 46
Likes: 0
Received 0 Likes on 0 Posts
Ok, a little more info. Truck is a stock 20R with what I assume is 270k (and possibly more..). It burns some oil and isn't the tightest engine in the world but it runs, lol.

I haven't taken the one apart on the truck to see what jets are in it, but I assume the other carb that it was running along side has the same jets. I don't know which are the idle and secondary jets or anything, but here's what I've got

160/175
130/155 (Ones down in the bowl of the carb)

The truck is lean at idle and really rich when into the secondaries.

Can anyone help?

Thanks.
Old 07-08-2015, 03:45 PM
  #3  
Registered User
iTrader: (1)
 
gillesdetrail's Avatar
 
Join Date: Jan 2013
Location: Montreal, qc
Posts: 803
Likes: 0
Received 1 Like on 1 Post
Weber 32/36 Carbs Include The Following Jets:
Main Jet 140
Secondary Jet 140
Primary Idle 60
Secondary Idle 50
Air Correction (Primary) 170
Air Correction (Secondary) 160
Pump Nozzle 50

taken from the lce engineering website for their 32/36 20r/22r carb.
Old 07-27-2015, 09:52 AM
  #4  
Registered User
iTrader: (1)
 
jimbyjimb's Avatar
 
Join Date: Apr 2014
Location: Seattle, WA
Posts: 299
Likes: 0
Received 0 Likes on 0 Posts
Web search 'carbs unlimited.' Upon navigating their site you will find Weber tuning instructions and parts you'll need in order to do so.
Old 09-01-2015, 06:37 AM
  #5  
Registered User
 
gsxrhilux's Avatar
 
Join Date: Aug 2015
Posts: 1
Likes: 0
Received 0 Likes on 0 Posts
How much would you sell me the other carb for?

Last edited by gsxrhilux; 09-01-2015 at 06:38 AM.
Old 09-01-2015, 09:23 AM
  #6  
83
Registered User
 
83's Avatar
 
Join Date: May 2008
Location: Montana
Posts: 4,588
Received 125 Likes on 101 Posts
Yeah before you rejet, follow the tuning instructions closely. Properly jetted or not, you're going to NEED to know how to tune it.
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
gp66
86-95 Trucks & 4Runners
4
09-14-2015 12:10 AM
LucasF249
Pre 84 Trucks
1
09-08-2015 01:17 PM
Gravel Maker
RuffStuff
1
09-08-2015 05:46 AM
gp66
86-95 Trucks & 4Runners
5
09-07-2015 08:29 AM
BigMike
Marlin Crawler
0
09-03-2015 07:49 PM



Quick Reply: Weber jet size for 20R?



All times are GMT -8. The time now is 08:29 PM.