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Author Topic:   Q-Jet Parts and help
DEEDDUDE
Dirt Full Roller

Total posts: 56
posted January 24, 2001 07:15 PM
Need some info. on where to find parts for Quadrajet Carbs(jets, rods, hangers, etc...) What modifications has anyone done to improve these carbs. Any help is appreciated. Deed

BDS
Dirt Roller

Total posts: 7
posted January 25, 2001 02:56 PM
if i remember right the edelbrock catalog is where you can find alot of the trick parts your looking for.

DEEDDUDE
Dirt Full Roller

Total posts: 56
posted January 26, 2001 04:24 PM
BDS, thanks for your help. Have you modified any Q-Jets? If so, what did you do? Thanks again. Deed

34Racing
Dirt Full Roller

Total posts: 42
posted January 26, 2001 06:57 PM
Hey Deed One thing that I did with my Q-jet was to take the choke, choke butterfly off and seal the holes where you took the choke off with JB weld. There is a really good book for modifying Q-jets that I bought out of Summit. It really shows you alot of modifications that will help to improve your carb. If I find the book I will tell you the name of it. Hope this helps.

DEEDDUDE
Dirt Full Roller

Total posts: 56
posted January 26, 2001 08:35 PM
Thanks 34, The first thing I did was remove the choke and linkages. I bought the book by Doug Roe and read thru it. Seems like good info. I'm having a hard time finding dril bits in the sizes that he recommends. I was looking for a supplier for jet,rod,etc... BDS gave me some info on edelbrock parts. I went to their web site and their parts are interchangeable with a GM Q-Jet. I was also looking for a starting point for jet and rod sizes. GM has 90 something sizes to choose from and edelbrock has only a hand full. If the book your thinking of is different than the Doug Roe book I would like the title. Thanks again for your help. Deed

34Racing
Dirt Full Roller

Total posts: 42
posted January 28, 2001 04:14 PM
Hey Deed that book is the same one that I have. I believe in that book the guy that wrote it actually has a address where you can buy some jets and hangers. I got lucky and found about 3 Q-jets at a swap meet for like 5 dollars a piece. Pretty good deal I thought. If your looking for the really small drill bits there is a industrial supply company called MSC and I know for sure that they have them. Are you could check a local distributor that sells tools for machine shops and they would have them. Let me ask you a question on your secondaries did you take the vacuum butterflies off of that? I left mine on I didn't real know if it made a difference. Hope I helped.

DEEDDUDE
Dirt Full Roller

Total posts: 56
posted January 28, 2001 06:19 PM
Thanks 34. I left the vacuum connected. I've read in several places to keep it connected. You can adjust the spring, this is what I did. I need to re-adjust. I've got the secondaries opening to soon. Deed

34Racing
Dirt Full Roller

Total posts: 42
posted January 30, 2001 06:38 PM
Hey Deed I left my vaccuum secondaries hooked up to. I saw a place in the Hot Rod Magazine called Jet Performance. They specialize in Q-jet rebuilds for different performance needs. You might try to contact them for some info on jets etc. I think they are in Hunington Beach, California. Hope this helps some.

MOD RACER#93
Dirt Freak

Total posts: 251
posted January 30, 2001 11:20 PM
Hi DEED. We are practically neighbors DUDE. When I ran Q-jets, I took a little drimmel tool and sanded down in the opening were the choke butterfly was. smoothed it up good. I always ran about 86 jets. I HAND drilled them carefully with the numbered bits. This may be a little rich for your car but it is a good starting point. the secondary rods to look for are the ones with DA on them. I read in circle track one time to put a wire terminal under one of the *****s by the secondaries so you can bend it down to pre open the secondary butterflies. I never tried it.

DEEDDUDE
Dirt Full Roller

Total posts: 56
posted January 31, 2001 06:07 AM
Mod Racer, Where do you race? I'm finishing a car for HRP(Baytown). The first playday is this saturday. Wont be ready, I still need to weight and finish set-up. Where did you find the DA rods? Edelbrock makes rods both richer and lean than this not in between. Thanks for your help. Deed

MOD RACER#93
Dirt Freak

Total posts: 251
posted January 31, 2001 09:02 PM
Im gonna race at HRP(baytown) and Speedway90(Bmt.) I am going to try to make it to play this saturday, but I have spent too much time racing sprints on this computer rather than working on my car....lol. I bought a Q-jet from a guy and DA's were just in it. They didn't tell me were they got them. They said they were the good ones. I think you can find them on used CHEVY Q-jets. The other GM carbs usually have leaner ones. Also you might be able to get some fine emery cloth and somehow spin the rod inside it to make the tip smaller. Try to keep the shape the same. Well I dont know they might have somekind of coating on them that would be removed. Might not outta try that. If ya got some old ones try it on them, first. Hope this helps...

DEEDDUDE
Dirt Full Roller

Total posts: 56
posted January 31, 2001 10:04 PM
93 I "assume" that you run a modified with the # 93. I'll make it to HRP this weekend only to time some cars and ask some questions. I did what you said with the secondaries, but like you said there is more than likely a coating on them. I've got some computerized Q-Jets and I borrowed some parts from them. Did it help? Who knows. I figured it would be better to get the right parts. Thanks for your help. I'll look for you at the track this season. Deed

eracer
Dirt Roller

Total posts: 5
posted February 06, 2001 12:23 AM
quote:
Originally posted by DEEDDUDE:
93 I "assume" that you run a modified with the # 93. I'll make it to HRP this weekend only to time some cars and ask some questions. I did what you said with the secondaries, but like you said there is more than likely a coating on them. I've got some computerized Q-Jets and I borrowed some parts from them. Did it help? Who knows. I figured it would be better to get the right parts. Thanks for your help. I'll look for you at the track this season. Deed

one of the largest supplies of rods,hangers,jets,etc belongs to doug reidy of dougs fuel and fire in grand island nebraska.I have used his q-jets for many years in our street stock class.with any motor from stock ole 327 to a very nice 406.his carbs are always right on the money.phone #308-382-5751

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