I have a 600 cfm Edelbrock on my 13B car. I don't know what jets are in it because it came with the car and it ran fine from day one.

I really wish I would have found this thread sooner. I havent even read through teh whole thing yet, but its been rlly funny so far. I dont know Mr TT, wankel, or either of the Jims personally but being the owner of an RB 465 I do read this types of threads from time to time. I cant back up the claim by wankel that RB does nothing but bad carbs for the 12a out of the box, and I cant back up the claims that they are perfect out of the box. What i will say though is that I did call RB on an almost daily basis before my carb did get squared away. Me and wankel, and a few others from all around the same time period were having the reported lean problems with our carbs. Just off the top of my head i can remember wankels thread which was a few months after mine, and another from just before i bought mine.

https://www.rx7club.com/new-member-r...tions-1002649/

https://www.rx7club.com/1st-generati...ptoms-1019572/

So it looks to me that there may have been some issues with this period of the carbs they were building. Those are are top 2 searches on google for the rb 465. And they both happened around the same time, both talking about lean part throttle response which was suspected to be the power valve. My experience was the same, with very lean part throttle and bad off idle and bad gas mileage when I first installed it when I got it. Unlike the experience of wankel, my carbs issues were resolved, I just had to take it to a dyno for tuning where they jetted it and modified the baseplate for it. It didnt make much power, but I was told it was normal for my 85 12a.

My name is Derek Hall, and my experience with RB is the one that Mr TT described as a joke in my respect quoted from supposedly Jim. I knew you were talking about me when you said that wankels brothers credit card was used to purchase the carb. That was my brother, and I had to use it because I wasnt home, I was in the middle of nowhere where I just bought my bros 85 rx7. RB wouldnt ship the carb to me in there, because my address was in PA. They wouldnt ship it to my bros house because the mailing address didnt match the billing address, so we used my brothers card. Which was also a salesmans idea from RB. I dont remember at this point if it was one of the jims I spoke to at that time or not.

I did make changes to the carb, but the only change i made was changing the fuel bowls to the center hung style that matched a fuel rail my brother already had installed on the car. When i bought mine from RB i only bought the carb, not the whole kit because my brother had already put a holley on his car and used the RB intake manifold, and headers but it had a shitty exhaust on it. So all i needed was the carb, and jim was the one who made note of that and sold it to me.

When i first installed it, one of the needle and seats o-rings fell apart and caused the repeated flooding of the carb. Me and jim figured that part over the phone and I got the car started and drove it for a little while around town, but the car kept stalling and dying randomly, and when I called RB on that he had me change the fuel pump out for a higher flow one. I didnt buy it from RB, I bought it from an advanced auto parts in town and it was very loud but it worked. It was a holley blue pump if I remember right. Even after the new fuel pump, my car still idled high and ran lean on part throttle. Jim told me it might need jetted up a few sizes and assured me I had a vacuum leak or timing, or something and assured me nothing was wrong with the carb.

after buying the car, I got a new job in PA so i had to drive the car to mifflinburg PA where I now live. Before I droe it here, i temporarily jetted the carb up so I didnt run it lean over such a long drive. When i got to PA, I talked to jim about the problems I was still having and he blamed me for jetting it up. So I took the carb to a hot-rod shop who was very familiar with the holley carb in new berlin PA, who rebuilt the carb and returned it to stock jetting, with the stock fuel bowls that RB delivered with it. It still ran badly, and I reported that to RB was was again blaming me because the carb had been rebuilt. He wanted me to mail it to him, but I couldnt because at the time it was my only car! I found a place called rhineharts performance that had a good running rx7 with the 465 carb on it, and I convinced him to let me swap the carbs and see if mine ran badly on his rx7, and if his ran well on mine. The problems with the car running lean followed the carb, because after putting my carb on his car it ran like shit, and mine ran really good. He told me his was from the full kit and it was about 7 years old at that point and commented that the new ones werent as good. It was at that time that I was reading wankels posts about his carb, and a few others having similar issues at the same time. I called RB so many times and tried everything I could think of to fix the problem because I simply couldnt afford to send my carb to califoria for a few weeks while I had no ride.

Jim did try to help me, and i know he and the others there got frustrated with me because of how many times I called, but I was just trying to get my car running right. I read here that he told someone else that I was basically retarded and knew nothing about cars in general and that really does bother me. And just like wankel, even though i never read that part of his thread until this morning I found that my throttle shafts leaked. It was enough to kill the engine at idle if you sprayed starting fluid near it.

After they told me at rb that my clutch or ignitors were causing the lean problems and after they told me to just buy a new carb to replace the one I had since I couldnt send them the one I was driving everyday. I just gave up, and took the car to rhineharts and had him dyno tune it. I dont know exactly what changes he made to the carb, but I know he removed the power valve, jetted it up, and cut into the baseplate in some way. He also put jet extensions in it, and its run great ever since! Not the best gas mileage, and a nightmare to figure out but it hasnt let me down since it was tuned. I swapped mine to a manual choke because the choke mine had was messed up, and was hard to start a lot but it works great now. I dont race it, so I dont know about how good they are there but mine does stumble sometimes if im driving too fast around tight turns.

TLDR, my carb wasnt perfect at first, but now that it is set up, I wouldnt have anything else. I do feel like it was a rip-off to pay as much as I did for the racing beat carb, because the guy at rhinehart perforance said he coulda built me one from scratch that ran just as well a lot cheaper but it is what it is.

And@Jim if you or any of the others if youre reading this, blaming me for all of the problems my carb had does piss me off, but i never once bitched about it to anyone or claimed RB did me bad business. And telling me to go away never happened either, I just got mine fixed and had no reason to bother them anymore.

Sorry for the book, but our community is smaller than you think, so this was inevitable.

Mrclean556 That was a good read. The cutting to the base plate was probably the trans slot, that would explain the lean condition under light throttle. I like racing beat products but never used there carbs. From the one I've taken apart I noticed the top emulsion hole is blocked but the bottom one isn't which means it will start to lean out at some point. It looks to me like they countered this with the large metering plate =to maybe a 70jet to add fuel as the secondary's open. Looks to me if the secondary's stick or the trans slot is not visable you could easily have those problems. I was surprised RB sold the carb without jet extensions.

While tuning my most recent carb I had trouble with the secondary's. normally this is easiest part of tuning, turned out the brass plug at the top of the metering block was loose sometimes acting like a big airbleed. I now epoxy every one I pick.

sorry for the delay in post but...

just a word of warning, both jegs and summitracing cannot get the part http://www.summitracing.com/parts/edl-18049

It was postponed 4 weeks in a row, until I finally cancelled it.

Jegs said the delivery date was in 2 weeks, 6 days later they extended it to be a month.

So now I am trying with http://www.summitracing.com/parts/edl-1405 even though it's 100 CFM more, but it guarantees to be soon. I payed extra for the $15 shipping and will keep you updated when I install it.

Also, I have rust in my tank, but my mechanic says the bigger jets won't have a problem with it. I was only havinga problem because the nikki jets are insanely tiny.

Do you guys think this is true?


rust issues are plenty but honestly with all the antiques I see on the street with their "new paint job" I can still spot out rust bubbles they try to cover up.

My car just has old paint so the rust is apparent.

Thanks for the read man, this is sadly why I went through with pursuing edelbrock and avoiding racingbeat, because in search histories of this thread there has been so many complaints about racingbeat that it made me really sketch about it.

However, now I'm dealing with shipment issues. My belief is that the specific Thunder series that wankel first suggested to me completely doesn't exist anymore, and no one wants to fab one up from edelbrock.

What? Its a common carb, usually next day shipped from summit racing or jegs....

What are they telling you? Back ordered? Some of the reman carbs like suggested have a 1-2 week delay on shipping because they have to build you one.

Who were you buying the carb from?

both summitracing and jegs. put an order for one on both of their websites after the first delay occured.

ended up just buying Edelbrock 1405 (600CFM) carburetor at a local store. runs really peppy!

going to have to order the smaller jets as it does not like to climb slowly, requires me to full throttle it to make a nice clean rev.

http://i58.tinypic.com/2jexl5w.jpg

http://i58.tinypic.com/23ll66g.jpg

got the 14IN diameter air cleaner, but ordering the 6IN one now since the 14IN is ridiculously huge.
I thought 14 inches wasn't going to be that big.

ordering the .077 jets from edelbrock and will tell you how it runs after installing them.

http://www.jegs.com/webapp/wcs/store...edelbrock+1420