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A20A1
09-28-2002, 03:55 PM
Oh well next time I need to make sure my accel pump diaphragm isn't squirting masses of gasoline out the side and onto the manifold.

good thing is my old modified keihin fits on my new 3g it's a BS engine I think... the damn carb and gaskets are slightly different.
I removed all the emissions crap and I hooked up the 4 needed vacuum lines

- B Air Jet
- C Air Jet
- Power Valve
- Advance Diaphragm

;)

rbeaud
09-28-2002, 06:42 PM
I've been following the posts you've made about minimizing the junk attached to a stock Keihin. Is what you've posted above the last word- just those four and the car will run well?

Cheers,

Roland

A20A1
09-28-2002, 07:44 PM
yup
C Air-jet and B Air-jet are the only troubling parts
A Air-jet can and should be removed.

The back of the air jet controller has a 12mm nut you have to unscrew it all the way.



What I like most is that within the jumble of vacuum hoses you can find just about every vacuum connector you need to hook the vacuum lines up.


Save some of the Vacuum connectors:
2 - "Y" connectors (3 vacuum ports each)

Get an asortment of vacuum caps:
8 - 5/32 Vacuum caps
8 - 7/32 Vacuum caps
3 - 3/8 Vacuum caps

Save most of the larger/odd shaped vacuum lines from the carb.
and get:
6ft - 5/32 Vacuum tubing

shepherd79
09-29-2002, 11:05 AM
hey Mike,
where is power valve?
and which advance diaphragm line?
can you tell the numbers. i can find faster this way.
thanks.

A20A1
09-29-2002, 11:40 AM
It should be #2 vacuum line from the advancing diaphragm.
but then other people say it's the vacuum port furthest from the distributor.

If you hook it to the wrong port it will turn the inside of the distributor about half of full advance.

the power valve port is on the back of the carb

A20A1
09-29-2002, 11:47 AM
You see where I wrote, HOOK DIRECTLY TO MANIFOLD VACUUM thats the power valve...

The two vacuum ports next to the power valve are "C" and "B" from the air jet controller.
I labled both of them PLUG? cause you can plug them, but when plugged it gave me trouble sometimes.

POS carb
09-29-2002, 02:14 PM
hmm, try hooking up A and B to eachother and follow the C going to the carb and plug the port filling on the carb. I never messed with it much b/c I always left the air jet controller at full rich (out)

shepherd79
09-29-2002, 03:39 PM
ok the other question, when i take the blackbox, and i unplug it. do i have to put any jumpers in to the plug?
what about EGR valve? what do i have to do about it?
where can i get those vacuum plugs?
oh yeah, mike(a20a1), can you send me pictures where you labeled what needs to be pluged. [email protected]
where is manufold vacuum line? i am no good with vacuum lines, so you will have to excuse me for asking so many question.
thanks

A20A1
09-29-2002, 06:41 PM
hold on I'll get some pics real soon

A20A1
09-29-2002, 08:08 PM
Pic #1
MANIFOLD VACUUM

A20A1
09-29-2002, 08:11 PM
PIC #2
DISTRIBUTOR ADVANCE
(NOTE I hooked both port together... this is not necessary.)

A20A1
09-29-2002, 08:13 PM
PIC #3
FRONT VIEW

A20A1
09-29-2002, 08:16 PM
PIC #4
LEFT VIEW

A20A1
09-29-2002, 08:18 PM
PIC #5
RIGHT VIEW

shepherd79
09-30-2002, 04:11 AM
oh man, No i can see.
Sweet.
ok now about the choke. if i pull the two vacuum lines will i lose the choke. I thought it was electric?

when removing the black box, i will have to unplug the wire from it. Do i have to putt anyjumpers in there?

shepherd79
09-30-2002, 04:13 AM
oh crap i forgot i am gonna lose the crouise control. OHHHHH!!!!
i love that feature.
oh well. it is all for the good

POS carb
09-30-2002, 06:58 PM
damn that carb looks lonley up there without all the vacuum appendages lol.
One thing I noticed the other day is that my car doesn't seem to use the black box at all, I can unplug the electrical connnectors at the end with no change to idle or performance :confused:

A20A1
09-30-2002, 07:09 PM
Took you long enough, hehehe...
just kiddin. :D

A20A1
09-30-2002, 07:38 PM
Man that secondary conversion is kicking my ass... I need to get a bigger accel jet somehow... ahh forget it... time to put on the weber.

shepherd79
10-01-2002, 03:35 AM
hey mike
where is accelerator jet for secondary on keihin carb?

A20A1
10-01-2002, 04:34 PM
There is none... the 32/36 is the same way... the Accel jet only has one passage, and that leads to the primary barrel... on the 38/38 the accel jet splits in 2 and squirts gas into both barrels...
I'll have to rig and electronic secondary fuel squirter...

shepherd79
10-01-2002, 05:54 PM
oh man, that sucks.
ok, so i am not gonna get 32/36 weber, i am gonna shoot for 38 weber.
cool thanks mike.

A20A1
10-01-2002, 06:12 PM
You could also run a single DCOE and then adapt it to the stock manifold.
(32/36 68mm)
(38/38 76mm)
(40/40 sidedraft 80mm)

you'd have to split the manifold inbetween the middle cylinders.
one side would run 2 cylinders.

A20A1
10-01-2002, 06:16 PM
That makes me wonder if a 45mm dcoe would be better as a single sidedraft.

shepherd79
10-02-2002, 03:37 AM
have you thought about two Dcoe for our engine.
i have been thinking about it.
may be use two 38 webers. the barrels open at the same time on them right? you can run each barrel to each sylinder.
how hard would it be?
i know you will have to make sustom maniford but beside that how hard?

A20A1
10-02-2002, 04:48 PM
you could do that with the 38's but you have to make sure the float is on the right or left side.... that means one of the runners going to the rear barrel would be longer.


I didn't want to do the dual webbers... I still like the simplicity of a single carb... I will just use larger venturies to get more air in.