Hi
I recently bought an 87 rx7 non turbo. It has a high flow dual barrel carb setup with a turbo charger on it. My problem is that the turbo doesnt spool up at all. I have no idea why it doesnt, but there is a ticking sound coming from the rear of the car. I think that it is the fuel pump. I think that the pump is giving the carb too much pressure because the car was origionally fuel injected. I am wandering if i should get a new fuel pump, and also i am wandering how i can get that turbo to work. any help or suggestions would be greatly appreciated. There is a red switch on the consol. When i turn it on, there is a faint tick. I found out that the tick was coming from something near or on the turbo. Is this somekind of switch to give it boost? If i turn it on when the car is running, there is no change. The car also cuts out slightly at full throttle. Please Help!!!
thanks

 

Can you get any pictures of the engine? I was under the impression that a turbo will not work with carbeurated engines because it would have suck the air through the carb instead of just pushing it through a throttle body. I've not heard of this setup, and it's going to be difficult to assist you without pictures and maybe more information. Good luck.

 

Can you post pictures of this setup? From your description, it sounds like the bearings on your turbo are dead. Pull off the inlet duct to the compressor and spin the wheel with your finger. How does it feel?

 

finally a warm day. Ill take the damn thing apart and just see if I can tell that anything is wrong. Ill take some pictures...thanks so much for the feedback, i really need some help.

 

I have seen some turbo setups using a special Weber IDF carb, but you're right, it's not very common. Cartech used to make the setup for both 12A and 13B's.

Greg O.

 

Well, i took the casing off the carberetors. (which is actually 2 double barrel carbs) I was expecting to see a turbo, but aparently the turbo was ouside the carb casing. I can see where it used to be installed. Now I need to buy a turbo kit for it. Does anyone know why my engine cuts out a high rpms or why the fuel pump is ticking? Also, should I ditch the carbs and go with fuel injection or should I just try to find a turbo kit that will work with the carbs? thanks for any suggestions.
Chris

heres a picture of the carb setup, I believe the turbo when on where the k&n filter is now.

 

I think you are very confused as to what a turbo is. I bet the guy either lied to you, or maybe you're getting confused with Filter charger or something. The K&N filter you are using is commonly called a filtercharger. From your picture I can see an exhaust manifold which comes stock on that car. That is where a turbo would/should be. I wouldn't go looking for a turbo kit for this setup untill you read a good about turbocharging systems and are a pretty handy mechanic. You aren't going to find a Kit for it. I wouldn't try to convert it back to injection either unless you REALLY know what you are doing. There's a lot of stuff you could screw up or leave out. I would learn as much you could about the setup you have from the person you bought it from. Sorry if you got screwed but you need to know these things before you buy cars like that.

 

You need to do yourself a favor and sell this contraption for whatever someone will take it off your hands for, before you spend a whole lot of time and money on it.

It's obvious by your description of how you looked for it that you don't know what to look for. The turbo should sit on the exhaust manifold, not on the carburetor. It doesn't look as if there ever was a turbo on that exhaust, as it's a NA exhaust manifold.

I don't mean to put you off on RX-7's, or this club, but you've been had, my friend. I think someone saw you coming with a big wad of cash just burning a hole in your pocket.

Be smart and have someone who knows about cars go and look at one with you next time. If you're going to buy another RX-7, at least take it to a dealer if you can't find someone who knows about rotaries.

Ren

 

Well....the plate over the carbs says CARTECH 2C Turbo on it. What apparently happened was the previous owner took the turbo kit off, including the modified headers/downpipe, and put the stock exhaust back on. I have tryed to get a hold of the people at CarTech, but no luck. I bought the car for only $2000 bucks, so I wouldnt say I got taken, since ive had an offer for 2500, but yeah I agree I need to try to figure out what the hell this setup is all about. I might just have to take your advice and sell it to the poor dude that offered me 2500, but I like the car, so I might try to fix it up. Im not sure if you can see it in the picture, but something was mounted where the filter is now, and there is a blow off valve and some other **** mounted in the engine bay, so I have no doubt that it was at one point turbo charged. True im no mechanic, but i do have a clue what Im talkin about. If anyone has any more suggestions as to what I should do please let me know.
thanks