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Installed the Synchronous Link, Weber 32/36


ryansti

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Yesterday I installed the Synchronous link that pegasus sells on my weber 32/36.

Car info:

1970 BMW 1600

2.0L (swapped along with 5spd)

weber 32/36

stock exhaust manifold

ansa sport exhaust

IE tii mech adv distributor with Ignitor

Red coil

IE 8mm plug wires

I am playing around with the jets.

First try was the setup posted in FAQ

Main 140/170

Air 145/175

Idle .60/.55

Low end felt great but over 4000rpm kinda felt sluggish like to much fuel.

I read a post that this was a good setup for the sync-link so I tried this out...

Main 140/140

Air 170/160

Idle .60/.50

It has good low and top end but crusing around 3500 and giving it gas has a stumble.

I think Im going to try this next..

Main 140/140

Air 145/160

Idle .60/.50 or .60/.55

70 BMW 1600 Malaga & Nevada

And a bunch of other old junk

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I had to adjust timing and idle mixture, which worked out most of the stumble.

I don't have an assortment of jets to tinker with, but Steve (I think) at Pierce suggested a larger secondary idle jet.. to compensate for the lean situation during the initial burst of air..? (Overall, I was underwhelmed at the support level and input he had for his product.)

Shouldn't the fuel be the same at WOT as without the Sync-link? Conceptually, only the off idle and part-throttle should be effected, correct?

I am so pleased to see someone scientifically working on this!! I haven't the skill level, nor the technology.

2002 newbie, and dead serious about it.
(O=o00o=O)
Smart Audio Products for your 2002

 

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Found a setup that works great. Lots of low end and smooth all the way to redline. Think I'm going to stick with it for now.

Main 140/140

Air 145/160

Idle .60/.50

The sync-link is well worth it on the 32/36 Weber!

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70 BMW 1600 Malaga & Nevada

And a bunch of other old junk

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I'm guessing based on the speed you've been changing these things out that the jets can be swapped without major carb disassembly? The last time I got up the courage to try rejetting, my knees gave out and my wife found me passed out on the pavement next to the car. Still too afraid to try it without a writeup...

  • Haha 1

~Rob

'73 2002 Warmbold Rally Car Imitator

'89 325i Time Capsule

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Just for clarification, are you running this carb setup on a 2L or a 1.6L engine? What cam are you running? Exhaust?

I think this info will be a good reference when people search in the future.

Thanks!

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I'm guessing based on the speed you've been changing these things out that the jets can be swapped without major carb disassembly? The last time I got up the courage to try rejetting, my knees gave out and my wife found me passed out on the pavement next to the car. Still too afraid to try it without a writeup...

That's FUNNY!

Its all doable on the car. 6 screws and the fuel line and you're in. lift off the top.. Main jets are in the bowl, air correction is under the top in the middle, and idle jets are on the sides (accessible without taking off the top).

2002 newbie, and dead serious about it.
(O=o00o=O)
Smart Audio Products for your 2002

 

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I'm guessing based on the speed you've been changing these things out that the jets can be swapped without major carb disassembly? The last time I got up the courage to try rejetting, my knees gave out and my wife found me passed out on the pavement next to the car. Still too afraid to try it without a writeup...

Yea, I got it down to about a 15-20 minute job lol

70 BMW 1600 Malaga & Nevada

And a bunch of other old junk

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Just for clarification, are you running this carb setup on a 2L or a 1.6L engine? What cam are you running? Exhaust?

I think this info will be a good reference when people search in the future.

Thanks!

Good idea! I added all the info in the first post.

70 BMW 1600 Malaga & Nevada

And a bunch of other old junk

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ryan - you started with :

..."am playing around with the jets.

First try was the setup posted in FAQ

Main 140 / 170

Air 145/ 175

Idle .60 / .55

Low end felt great but

over 4000rpm kinda felt sluggish like to much fuel. "

you should've plugged the secondary side "ENRICHMENT

PASSAGE" AND i THINK YOU WOULD BE SMILING NOW.

see below -

try this this weekend :

Float Level 40mm

PRIMARY

idle 60

main 140

air correction 145

SECONDARY

idle 55

main 170

air correction 175

AND -PLUG THE SECONDARY ENRICHMENT HOLE AT THE TOP OF THE CARB AS MY DIAGRAM SHOWS . JUST DO IT AND SEE THE HUGE DIFFERANCE IN ACCURATE FUEL METERING THROUGH OUT ALL RPM AND THROTTLE OPENINGS.

WEBERprescriptionplughole31a.jpg

WEBERprescriptionplughole31photoB.jpg

...................... =

Racing02wheelliftpic.jpg

'86 R65 650cc #6128390 22,000m
'64 R27 250cc #383851 18,000m
'11 FORD Transit #T058971 28,000m "Truckette"
'13 500 ABARTH #DT600282 6,666m "TAZIO"

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Ryan, where are you at with timing? Did you see a need for adjusting? I had best power but worst stumble when I first put installed the SL. Not having a selection of jets on tap I was left with timing adjustment.. Which, if I rotated the distributor counter clockwise, and adjusted idle, the stumble decreased, but a percentage of he power gain went with it... :/

2002 newbie, and dead serious about it.
(O=o00o=O)
Smart Audio Products for your 2002

 

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Ryan, where are you at with timing? Did you see a need for adjusting? I had best power but worst stumble when I first put installed the SL. Not having a selection of jets on tap I was left with timing adjustment.. Which, if I rotated the distributor counter clockwise, and adjusted idle, the stumble decreased, but a percentage of he power gain went with it... :/

I set my timing at 2500rpm flywheel/ball bearing. The only gains I think the sync-link will make over a regular 32/36 will be low end. Cause at full throttle they will be the same either way. Its just finding the spot where low end is good but top end isn't going lean.

I'm having fun with it though.

70 BMW 1600 Malaga & Nevada

And a bunch of other old junk

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