crazy carbs on a crazy 4ag - Toyota Nation Forum : Toyota Car and Truck Forums

DRIFTASSAULT · 01-22-2005, 03:16 PM

Just wondering if anyone has done the kehin fcr motorcycle carbs on their 4ag. I picked up a set of 41mm's and i can't find any settings anywhere. i don't want to try to start the motor till i can find some baseline settings. Has anyone got a base line setup so the eng will even idel properly?
thanx....

Flashmn · 01-23-2005, 05:37 AM

I had 36mm keihin CVK's on my 4A-F. the 41mm ones would be too big as far is I would figure out, the bikes flow alot more through those than a 4A-GE would.
Baseline, I remember I had 35idle jet, 160main jet, stock needle. But tuning those bike carbs is a PITA, I could never get it to pass emissions.

Pic without the filtersocks.

VooDoo · 01-23-2005, 07:49 AM

have a friend with 36mm mikuni's on a 4AF, and another friend with 38mm keihins on a 2E.

Flashmn · 01-23-2005, 01:31 PM

38mm keihins on a 2E, talk about bad low end

RollaAce · 01-23-2005, 08:20 PM

I just remembered that I have an extra set of carbs for my bike and I'll be damned they're Keihin. Don't know the size but I do know that they've been rejetted and polished

. Who makes the kit to fit the 3tc or 4ac engine?

***BLUEMEANIE*** · 01-23-2005, 11:11 PM

Quote:

Originally Posted by RollaAce

I just remembered that I have an extra set of carbs for my bike...

lol. me too, two sets of mikuni's and one set of Keihin's off my '74 CB750/863

RollaAce · 01-24-2005, 02:30 AM

Hee hee, if they can't be made to work we can always sell them to someone who wants to try.

VooDoo · 01-24-2005, 02:48 AM

Quote:

Originally Posted by Flashmn

38mm keihins on a 2E, talk about bad low end

didn't feel like it.

Flashmn · 01-24-2005, 03:41 AM

well.. it would, but the slide helps a bit, it restricts the venturi. But too big is always bad, the intake air flow would slow down = not good.

s3v3rth3stars · 01-24-2005, 10:15 AM

i have mikunis on mine hopefully i can figure out the ignition on it so i can get it running and shoot some pics.

thespud · 01-25-2005, 05:56 AM

Sorta off topic... How is your quad-carb setup going Flashmn? havent been on in a while so i havent been keeping up...

Flashmn · 01-25-2005, 06:12 AM

I ditched it and got some webers instead.. got pissed off because I didnt pass emissions with them HC emissions were damn high.