minocqa

hi
after i send in my carb to Paul Yaw what will i need to remove from the engine, engine bay...will i still need all the emissions? just curiuos
after reading all the feedback about Paul Yaw i'm sure he's the one i want to rebulid it. i thought about doing it myself but i'm a little leary.
i have never rebulit a carb before. and dont have a clue where to start.
although it is temping. please let me know what you think. i really value your opinions.
thanks

MIKE-P-28

iTrader: (1)

I beleive if im right, not speaking from experience or anything but you wont need any of the emissions stuff... Only one you will want to retro fit would be the A/C solenoid, if you wanna keep A/C that is... The 2 for the timing can be eliminated by adjusting the advance on the timing a little.

peejay

You don't really need the A/C solenoid either... it was inoperative on my '80 and I never had any problems, the idle would dip down from 900 to 700 when the A/C kicked on - no big deal and quite liveable.

RXcetera

Dont advance your timing to compensate for no vacuum advance .

mar3

iTrader: (8)

If you want to run a Yawpower carb but still have to pass emissions, what do you have to do to it, then? Would an RXctereaPower carb still have all the necessary bits to be in compliance? For $62 US dollars, that's quite a deal!!

RXcetera

Wo brotha! I never said 62$ US lol. I said 100$ US for a straight rebuild (which includes a bit of cleaning), 150$US if you want the carb completely cleaned, polished etc. I beleive Yaw either removes or replaces the plastic spacer that separates the carb from the manifold (can someone with a Yaw let me know). This spacer contains all the emission circuits vacuum outlets. If it is gone or replaced with something different, it just isnt possible to connect any of the vacuum lines connected to the ECU. Any minor carb and manifold mod requires the removal of the ACV, Vacuum Advance, ECU... so when it comes to passing emissions, you might just have to get creative (depending on where you live).

As for my work. If you want to keep all your emissions equipement intact on the carb and car, that's fine, but any kind of power tweaks will have to be kept to a minimum.

MIKE-P-28

iTrader: (1)

Ah you said $62 bucks I seen it LOL Just joking....

RXcetera

Haha... here's what happened. Someone asked me if it was 100$ Canadian or American. I answered it was 100$US because 100$ Canadian is only 62$ US. I love you guys and all, but 62$ for a complete rebuild isnt even enough to pay for those 75$ Tokicos springs LOL!!

mar3

iTrader: (8)

I wuz just teasin', dawg!! I remember your reply on the other thread, so I thought I'd have a little fun for the folks that missed it! On the carb side of affairs, would running larger primaries and secondaries qualify as major upgrades that would eliminate the ability to run the emissions vacuum/heat shield under the carb? If only slightly opened up, I don't see how that much vacuum signal could be lost to render the vacuum advance on the carb ineffective. That plate is nothing but a plastic sandwich with steel tubes of various lengths epoxied into it. It can be bored out also. What kind of money are we talking now? Don't need it polished....

hanman

With the Yaw carb you can keep all the emissions or just lose them all. Your choice. As for emissions testing, I have no idea if the Yaw carb will pass if you leave everything hooked up.
Paul's carbs are not merely "rebuilt", they are a total modification. He strips them and replates them also. They look great when you get them back. No matter how bad they looked when you sent them in.
Paul uses the stock spacer (isolater) that goes between the carb and the manifold. Although he mods it.
hanman

mar3

iTrader: (8)

My problem with the YawPower route is that he won't do '80 carbs. It seems that RXcetera has no such bias. I'm pretty sure that a modded carb that has all of its emission circuits left useable will pass the sniffer. I had a huge hole in my vacuum line going to the brake booster and it still passed the idling part even with the uncontrolled extra air coming into the engine. If that extra air was introduced in a controlled mannner through the carb, I'd think the mixing would allow a similar clean burn. Hoping, anyway...

hanman

Mar,
You are right, Paul won't do the 80 and 79 carbs, they are too much trouble. I have an 80, so I just bought a used junker off of ebay for 10 bucks and sent that to Paul.
Question, how tough is Texas on emissions? Do they do a visual along with the chemical analysis? My Dad is taking his 90 vert down to Sherman in a few months, I want to put a RB header on it, but I am worried about the TX laws.
Thanks,
hanman

mar3

iTrader: (8)

I don't know if Sherman even has to deal with emissions. In the Metroplex (Dallas and Tarrant counties...), they do a visual, but most schleps have never seen a rotary and so have no idea what is correct! I've got "headers" and chopped up the factory heat riser from the thermal reactor to look like a functioning piece. With the thermal coating from Jethot, it's virtually useless but the tube going to the air cleaner is all they look for. If it originally had a cat, you might need the receipt to validate the replacement. In my case, it had no cat (which is why I keep the factory sticker on the hood as "proof"), so a cat system was perfectly acceptable to them although, technically, I had changed the emissions system. It runs the low numbers, so they don't quibble the point...

hanman

So they do it by county and not a state wide standard?
Thanks for the info,
hanman

mar3

iTrader: (8)

It's by county. Tarrant, Dallas, Houston Metro, Austin, Corpus Christi and El Paso (which is a complete joke since you can see the freakin' smog wafting over from Juarez...) are definites. I think there are maybe 4 or 5 more counties in there but I don't know their names. Shamefully, I must admit I don't know where Sherman, TX is, so I can't tell you if the county that it is in must run a sniffer program. It's not a state mandated thing. The state targets gross polluter counties as defined by the federal gov't so it can continue to recieve federal monies for highway construction...no joke...

Felix Wankel

Be like my car and remove everything but the engine and radiator

RXcetera

Hanman, I'm not saying I do the same kind of work as Paul Yaw... but if someone one gave me 350$US and a used Nikki, I'm sure I could do all kinds of things to it .

Mar3, for the amount of money involved in this, I cant really afford to start enlarging and rejetting Nikkis for people (not at this point anyways). This is basically just an extension of my Dellorto business... if you had a Dell and wanted to enlarge your chokes and rejet, there'd be no problem .

But I'm still here for anyone who wants their Nikki rebuilt, cleaned and LIGHTLY modified .

mar3

iTrader: (8)

Well, that solves part of my problem Thanks for being direct about you will and will not do...

RXcetera

For 100-150$ there just isnt much room to do much. If I could get enough interest in something like a 250$ carb mod, then that could open many doors, but for the moment, this is only something I do on the side. Paul doesnt make much on his carb mods... I'd be making even less .

jimmyv13

How long would you have my carb? Do you need the intake, too? I just can't wait 5 months for a YAW.

RXcetera

It takes about a month depending on what parts you need. For manifolds, I remove the shutter valve and cap the ACV/air outlet. There's also a few simple grinding mods that can be done to the 81-85 manifold.

jimmyv13

Would this still be in the $100-$150 range? What kind of performance will I expect on a SP motor with RB full exhaust with this carb and mani mod?

RXcetera

It still wont be big enough for your streetport .

jimmyv13

Is that why my SP is a doggy bitch?

RXcetera

I thought we had been through this already lol. YES!! That's definitely one of the major reasons .