85 gsl rx7 I have the racing beat header set up but I need a carb now and I need something good. help me out and give me some advice and some if you want give me some pros and cons of the carb you suggest thanks!!

 

i say get a sterling. reason being cuz its awsome.

 

This is what I hear also...

 

I thought sterling was down for the year??

 

i thought i read he was getting reorganized for it.

 

you have to get on a waiting list last i knew, but i had no idea they were down...

 

They are still running, just reorganizing. Probably should have clarified that.

 

any dellorto or weber setups work great for all around driving a really liked the dellorto but went to the bigger weber 48 ida due to the mods on my motor i still have the dellorto with the 12a intake pm if intrested

 

You have three choices:

1. RacingBeat (RB) prepared weber
2. RB prepared holley
3. Sterling modified Nikki

They are all good and provide approximately the same CFMs. They are all available new today, unlike a RB prepared Dellorto which are not sold new by RB anymore.

The Sterling is a modified stock Nikki carb. Sterling has been moving to a new facility and is starting to ramp back up so a wait might required. Best to contact him directly for the details. I hear his carbs rock!

Anything thats not prepped for a rotary, like RacingBeat does to its carbs, is going to be very hard to get running right and will not be a straight bolt on. The RB carbs are a straight forward bolt on mods with good directions and support.

Do a search on Sterling for more on his carbs and search weber and holley for more info on them.

 

sterling > holley
thats if you want a 4 barrel.

you dont want a 4 barrel though.
keep it simple and get a nice 2 barrel, for real.
weber, dellorto, mikuni. sidedraft or down draft. your choice.

heres a pic of my dellorto 48dhla
i paid $350 from a forum member a few years ago and have not had a single problem with it and am 100% satisified.
cant say the same for my buddy with the rb holley.

 

What about Paul Yaw's carb. Those are wonderful carbs that flow great. I'm surprised nobody has mentioned those.

 

He stoped making them for sale to the public.

Sterling is the only place for a modded nikki, though I have seen some yaws pop up in the for sale section.

 

Has anybody tried the OER Weber copies? They're half the price of an actual Weber setup (when purchased new)

http://www.rotaryshack.com/Products/...?intNotice=150

 

I love the simplicity of my Holley, but as some people will tell you, around the turns it is hard to get them to keep the flow. If you are going for a hard cornering car, go with Weber, Dellorto, or Mikuni. They will flow much better around the turns. From what I've gathered in my research, if you want the highest horsepower, Holley's have it.

When I say highest horsepower, I am going by racing beat's chart, and their chart only shows like five horsepower difference from its competitors. And how often are you going to tell five horsepower difference? Not very.

In other words, I say go with a Weber or Mikuni. If you can find one, a Dellorto will work as well.

I am, however, running a Holley and find no real problems with it either.

 

the webers made in spain donot have the quality of the older ones made in italy i had a 48 idf bad out of the box on a sand rail i finished last year he wasn't happy to find out one of his $400 carbs was bad but this can happen with any aftermarket product earlier webers have better castings and the dellorto is a better deisgned version of the weber

 

heres a quick question for those who have 2 barrels. wat are the differences of the side drafts and down drafts? i have read it in the archieve and the only thing i picked up was that side drafts have a longer runner.

 

HUH ???

 

Quote by Aaron Cake:
This thread is being closed because this topic is either covered in the FAQ or has been covered many times before. It is suggested that you make use of the search feature and read the FAQ to find your answer. If you still cannot find what you are looking for, then feel free to post your question indicating that you have already looked for an answer, and someone will probably be happy to help.

Please be aware that this forum has been around for quite a while, and almost every common question has been covered many times in the past. All this information is available by using the search function. Common questions are also already answered in the FAQ.

 

Good thing Aaron is the mod for the 2nd gen section and not here. lol

Carb questions do get frequently asked and trying to find the answer one needs can be very frustrating due to the shear number of carb threads to wade through. We really need a long ***, detailed sticky/archival thread of all of the different carbs available, along with the up/downsides of each.

I suggest we get a list of members who specialize in each different type of carb and start a carb only thread that covers each different one.

I'll be happy to start a thread for the archives, anyone who wishes to share thier knowledge/experience on a particular type of carb, PM me and I'll get a list started to see if we can do an end all thread on 1st gen carbs. Those who wish to participate must be able to provide pics.

I would also like to see the thread contain install/rebuild/jetting info for each carb, along with sources for parts/jets/rebuild kits.

Our archives have been getting much better since Jon has been building it up. There are still many things that could be added to it if we take the time and do the writeups. It's our forum, only we can make it better and more resourceful.

 

And folks wonder why the 1stgen corner has the rep of being a friendly place to post...quite snobby, that bit about "Please be aware that this forum has been around for quite a while, and almost every common question has been covered many times in the past." completely forgetting the fact that a noob has no idea what a common question would be if he's new to the Forum...
What's it like starting up when it's 30 deg F outside? Any kind of choke present?

---->aws140, is that a Derale electric fan on the rad?

 

Downdraft is the stock setup. Sidedraft is when the intake is mounted on the side, instead of up.

 

The side draft 2 barrel carbs (both weber DCOE and Dellorto DHLA 48) have or can have a choke as part of the carb. This makes them more streetable in cooler weather. The down drafts, from what I gather, flow better, not sure why exactly.

Typically the side drafts are mounted on a wrap around intake that places the carb up over the engine. This was done to a) increase low end torque b) you can use the stock acelerator/choke cables and c) the carb stays a bit cooler because its not over the headers. Downside, it makes things more cramped on top of the block. I have a Dell and I like it.

Oh and two barrels like the weber and dell are progressive carbs. This means they run off of the idle circuit at lower RPMs and transition to the main jets as the flow increases. This transition can be tricky to get completely smoothed out via adjustment and tuning, such that folks have experienced a bog as they push the accelerator down. Usually its not big deal because if the transition is fast enough you hardly notice it (i.e. floor it This is a common complaint but you can get it right, just takes some patience.

 

Runner length and space factors are more important, IMHO. With a good heat shield, the temperature on the side can be cooler than the temperature over the engine. Longer choke/accelerator cables are readily available and very easy to install. SU carbs are typically mounted on the side of the engine.

 

"Runner length and space factors are more important, IMHO. "

The longer the runner the better the low end torque with some sacrificing of the top end. What your advocating is shorter runner length, which will help top end but lose low end torque. These cars have poor low end torque as it is, anything that helps that is a good thang. Ignoring the extra work to add a heat shield and replace stock cables, for the street I would want a longer runner.

 

I personally would go witha weber carb. Thats just me