patmac6075

iTrader: (26)

Hey all,

I'm in the process of rebuilding a Dellorto DHLA 48 and I hope to do the install in the Spring, but I have a couple of vacuum questions:

1. Can I keep the Air Conditioning? Since I'll be removing the Rat's Nest and the Racing Beat Upper and Lower manifolds don't have vacuum ports....how can I keep the A/C solenoid operating?

2. Pretty much the same thing goes for the Cruise Control....do I have to pitch it?

3. I read in a recent post that you just remove the vacuum advance (distributor). Leaving it unplugged ... Is this the most common approach? Is there anything else I'll need to do, like advance the timing?

Thanks


'83 GS

deadphoenix52

iTrader: (2)

you could tap into the manifold until you have the necessary number of vacuum ports. i pitched my a/c and cruise tho

trochoid

iTrader: (6)

RB recommends not using the vacuum advance. In that case, set the timing at 24L, 16T with the RPMs at 4000. Re-mark the timing pulley. 1 mm=1 degree of timing wheel circumference.

All the AC solenoid does is bump up the idle to compensate for the AC compressor load at idle. You can bump the idle up to compensate in the summer. You may not be able to use the cruise control as the Nikki carb has a separate and independent cam for the CC cable.

patmac6075

iTrader: (26)

Thank You and Happy Birthday....Old Fart.

I appreciate your insight and knowledge.

trochoid

iTrader: (6)

Thanks, it was a milestone b-day this year since I was born in the first half of the last century.

patmac6075

iTrader: (26)

Ha Ha...Then you can't be that old....I too was born in the 50's....just later part.

theNeanderthol

iTrader: (1)

Check this out. It would do the trick... Of course it caosts almost what the carb does... Still, I think it's a super cool innovation


http://www.zccjdm.com/catalog.php/az...OTTLE_UP__KIT_

trochoid

iTrader: (6)

Pricey, I can buy a lot of screw drivers for that kind of cash.

rwatson5651

iTrader: (5)

I am running a Mikuni and I have AC. I was bugged by the idle issue so I took the idle compensator off the Nikki, controlled it with one of the vacuum switches off the rats nest, fabricated a mount that positions it so it can open the throttle ever so slightly when the AC compressor kicks on, works perfectly!!! The RPMs do not fluctuate at all.

PS I dont run any vacuum advance I just set the timing at about 4 grand and it works fine.