Quadrajets suck...

**wheeliE-maxx** · 09-06-2009, 02:21 PM

...big dick. Any shop will probably screw me on a rebuild because it's "complicated". I already have it boxed up, might as well send it to Smi Induction for 180$ and have them jet it. Rant over. Oh, also, old vehicles are to be expected to turn into complete shit boxes as soon as you buy them, like mine. Oh wait, so did my dad's '00 Formula

I can't ever get gasoline stank out of my hands. Now rant over.

**snaggeltooth** · 09-06-2009, 02:27 PM

actualy Rochester carbs are great carbs .. IF you know how to work on one ... Can get better performance and better MPG out of one than a regular 650 Holly ..

**wheeliE-maxx** · 09-06-2009, 02:34 PM

In the rebuilding and price aspect

I love the torque and mileage (comparatively of course, mileage still sucks) of it when it ran right. I'm just pissed because it needs a rebuild and everything else has gone wrong with the truck aswell. It's a never ending cycle with old cars. We had a 600 Performer on another truck and it's "ease of tuneability" didn't impress me at all. It was still another pita carb. And it didn't adjust for the weather anywhere near as well as the old quad seems to. But i've replaced everything in the ignition as well as the fuel filter. It seems to point to the float level, but it's leaking anyway so... Just aswell get it built right, like epoxy on the casting plugs so it doesn't leak down.

**cuervo25_1** · 09-06-2009, 06:00 PM

I had my Neighbor "adjust " mine on the built 400 in the monte. In his words exactly when i picked her up and asked how does she run " like a stripped assed ape"

**Transamws6** · 09-06-2009, 06:09 PM

Thats why you should have bought that Z28 then you wouldn't have to have deal with no stinkin carburater. J/K

**pajeff02** · 09-06-2009, 06:42 PM

I just posted a Q-jet thread yesterday as I am having idle issues with our Corvette. Overall, I am a Q-jet fan and am running them on two of our cars. Properly set up, I think they are great carbs and have no plans of changing either.

**wheeliE-maxx** · 09-06-2009, 06:43 PM

to Transamws6- Then i'd just scatter the fuckin ten bolt in front of the school showing out

As I mentioned before, my dad's formy is modern but that didn't stop a rocker from taking a shit the third day we had it. They apparently updated the design and had problems with those, but they never blew up on the previous owner when it was under warranty. Valve springs were weak too, but the owner had comp .600 lift springs on a .610 lift cam. Dumbass.

**67CamaroRSSS** · 09-06-2009, 06:57 PM

I've found Rochester 4V carbs to be very reliable and they offer almost infinite tuneability. You just have to have a variety of rods, hangers, jets and the patience to take it apart a few dozen times (well at lest to take the top off to change jets and/or the carb off the engine to adjust the opening rate of the secondaries).

If you can find one off of a 455 Buick (or some Olds engines) they are 850 cfm. Still, the basic 750 cfm is good enough for most SBC applications.

Back in the day I fooled a lot of folks running a Rottenchester Quadrajunk on top of my combo... I could say, "Yeah, it's stock..."

**310stanger** · 09-06-2009, 07:05 PM

quadrajets might be good carbs but its hard to understand running one when the holleys are so much easier to use.

**Transamws6** · 09-06-2009, 07:15 PM

Originally Posted by wheeliE-maxx

to Transamws6- Then i'd just scatter the fuckin ten bolt in front of the school showing out

As I mentioned before, my dad's formy is modern but that didn't stop a rocker from taking a shit the third day we had it. They apparently updated the design and had problems with those, but they never blew up on the previous owner when it was under warranty. Valve springs were weak too, but the owner had comp .600 lift springs on a .610 lift cam. Dumbass.

lol @ the cam noob. i'd rather ride around in a formy with a 10 bolt than be riding around in an orange truck lol really j/k that thangs sweet. I'm in the mood for cracking jokes on people today.

**wheeliE-maxx** · 09-06-2009, 07:26 PM

Atleast my sofa-like bench seat is nice. Those cloth buckets in the bird suck imo. I'm sticking with the old quad, unless this guy my dad works with actually gives him the free Thunder avs he claimed he would. I'm probably just going to ship mine out to smi and get it set up for say headers and a performer manifold, maybe an rv cam. But then I have to drop the pan and take out the radiator. My piece of shit shortblock would pop or something. I have a feeling that i'll get screwed on price around Houston, but i'll get some quotes anyway. No one works on old stuff any more. Where as back in the day anyone could rebuild a carb, you have to pay out of the nose for a race shop or specialist now. Hell, even O'reilly or Napa could build you a carb. And no, i'm not tearing apart a quadrajet... Scary stuff in one of those

**Transamws6** · 09-06-2009, 07:30 PM

Originally Posted by wheeliE-maxx

Atleast my sofa-like bench seat is nice. Those cloth buckets in the bird suck imo. I'm sticking with the old quad, unless this guy my dad works with actually gives him the free Thunder avs he claimed he would. I'm probably just going to ship mine out to smi and get it set up for say headers and a performer manifold, maybe an rv cam. But then I have to drop the pan and take out the radiator. My piece of shit shortblock would pop or something. I have a feeling that i'll get screwed on price around Houston, but i'll get some quotes anyway. No one works on old stuff any more. Where as back in the day anyone could rebuild a carb, you have to pay out of the nose for a race shop or specialist now. Hell, even O'reilly or Napa could build you a carb. And no, i'm not tearing apart a quadrajet... Scary stuff in one of those

And i thought EFI's were hard to deal with

**wheeliE-maxx** · 09-06-2009, 07:37 PM

Well, they're sorta mixed for complication. I had the carb off in ten minutes and boxed it up. Simple stuff. Overall, my biggest problem with the quad is the lack of any external tuning. I was going to try to help the idle a little by messing with the fuel screws, but of course from the factory they are blocked so you can't screw up the emissions tune. Just a little frustrating. I think my floats are off now. It's way rich and rough all around, and as I said before the iginition, fuel filter, and pump are fine. Plus it's leaking and nasty. It had been sitting in the po's garage for about 2 years which way gummed up the tank (went through like 8 filters in a couple weeks) and absolutely killed the valve seals like all old chevys when they sit

**Z28Thunder** · 09-06-2009, 07:48 PM

Originally Posted by 310stanger

quadrajets might be good carbs but its hard to understand running one when the holleys are so much easier to use.

I had both.. Rebuilds on the Q-Jet were a breeze IMO did it all the time. Heck can still do it in my sleep. Went to a Holley 750 dbl pmp and liked it.. But loved tinkering with the Q-Jet more. I guess it's all in what you consider fun.

**Transamws6** · 09-06-2009, 07:58 PM

Originally Posted by wheeliE-maxx

Well, they're sorta mixed for complication. I had the carb off in ten minutes and boxed it up. Simple stuff. Overall, my biggest problem with the quad is the lack of any external tuning. I was going to try to help the idle a little by messing with the fuel screws, but of course from the factory they are blocked so you can't screw up the emissions tune. Just a little frustrating. I think my floats are off now. It's way rich and rough all around, and as I said before the iginition, fuel filter, and pump are fine. Plus it's leaking and nasty. It had been sitting in the po's garage for about 2 years which way gummed up the tank (went through like 8 filters in a couple weeks) and absolutely killed the valve seals like all old chevys when they sit

How much did you pay for that truck man?

**wheeliE-maxx** · 09-06-2009, 08:00 PM

6k.

**Transamws6** · 09-07-2009, 04:58 AM

Originally Posted by wheeliE-maxx

6k.

.................

**Smittro** · 09-07-2009, 05:12 AM

Best thing about a Quadrajunk was the throuty sound they made. Too much air not enough fuel. Which I may add the mid 70's to early 80's they were known for. Tiny primaries, massive secondaries that flow little or no fuel just air. Shitty choke set up in the later "electric" ones. Just my 02 but I'd rather run an eddie on an old Chevy v8 anyday.. Not to mention there are so many variations of the carb that some rebuild kits have to have like a 1000 gaskets in the box,
(to hit the right model) lol.. Dont even get me started on the fast and slow idle "cams".. Pump pump pump pump crank, pump pump pump pump crank while pumping pump pump....fire and die....

**wheeliE-maxx** · 09-07-2009, 08:58 AM

Yeah, my truck was a Cali special

only damn'72 in America with air injection, egr, and the hydrothermic air cleaner. All of that failed within a couple days of each other, and taking it off threw the tune off worse. And, this wasn't a later motor. It hAs emissions plaques and stickers everywhere. I'm gonna have them set it up like a non emissions '70 if I go for a stock rebuild because I have all the specs in my service manual. And you're right, the secondaries don't really pull harder than the primaries. They sound amazing though. They're huge