Thread: Which carby to use?

There is something drastically wrong there. Q-jets in good order normally just fire up and run nicely on a Rover V8 needing only minor adjustment of the idle mixture screws. $400 seems very steep to me for a rebuild. Was there a high labour charge? People familiar with q-jets can fit a rebuild kit in a couple of hours. People unfamiliar can take all day. You probably should acquire a Rochester manual and take the time to do it yourself strictly following directions. This may take you a while and you may need to buy/borrow some measuring tools. Once set they rarely need attention and like all carbs, once set up should be surrounded by a ball of barbed wire to keep self-appointed experts away.

Thanks for the info brian that is what I thought but I have had nothing but problems. The cost was $300 for the rebuild and $100 for the electric choke which by the way doesn't seem to really help much. Just makes it a pain to start and stops working before its done anything really.
So should I keeping on trying with this carby till it comes right or get rid of it?

You don't need a choke on these in Australia except in the most inclement of winter conditions, like almost Antarctic. A couple or three pumps of the throttle will prime them. Do you have an electric fuel pump fitted?

The best book is Rochester Carburetors, by Doug Roe and Bill Fisher, published by HP Books. Motorbooks in Sydney, or Pitstop Bookshop in Perth should be able to find a copy, or search for it on the internet.

Get the book and follow the instructions strictly step by step and you can't go wrong.

I have used these successfully on various V8's, Chrysler Hemi 6's, and Holden red engines using only one primary and one secondary throat, and on a supercharged Buick Straight Eight.

I have a couple here suitable for spare parts I can send to you no charge by Australia Post COD if needed.

Quadrajets were probably the peak of carburetor design. They are a complex instrument but once set up correctly rarely require further attention.

The first one I had didn't have a choke or choke plate and it was a pain in the bum to start in the morning. Like 10 mins of start, stall, start, stall till I got it to run. The choke has helped with that takes about three cranks and its started. Thanks for the offer but I already have three in peices sitting in the shed that I have bought over time. Would it need rebuilding or not? Also does the power piston usally have grease or oil on it? Also inside the car you get really bad smells of petrol from time to tmie mainly on corners. Yes I do have the standard rover electric fuel pump, but I have often wondered if this one is sutible or not. I ahve often wondered if this pushes too much fuel through or not?
Thanks again for all the info I might get a rebuld kit and do it myself. But the reason I didn't do this last time was that I was told the kit only comes with three gaskets and thats it is this right or is there more to the kit.

Kris

A full overhaul kit has a good bit more to it than three gaskets. What is your fuel pressure? Do you have an excess fuel return line plumbed in just before the inlet union returning excess fuel back to the tank side of the pump? Is the float level correct?

Search for The Carburetor Company, Eldon, Missouri, and buy a full overhaul kit from them, or maybe even a rebuilt carburetor from them. They are THE experts.

This modification is worth pursuing. These gadgets work really well.

I am not sure of the fuel pressure. I belive I have a fuel return line, when I bought the car there is a black hose that has a screw thred on the end that was hanging in the brezze. I was never sure what it did till one day I lifted the bonnet to check the water and found fuel dribbling out this hose on to the hot exhust so a tapped it up so it couldn't leak and I have never been sure of what to do with it. So where does it plumb into the fuel line going into the carby or somewhere else.
The float level I belive is right when the carby place did the rebuild they should of set this correct?
I think your'e right I will source a rebuild kit and rebuild it myself at least I know its done right.

Have a look at THE CARBURETOR SHOP

Might be worthwhile getting an overhaul kit from Jon by air mail, or even a rebuilt carb. You can send up to 20kilos. by air mail from the US.

400km from a Tank....
I WISH

i get 250k from a tank in my injected 3.5 88 model.....