just picked up this 80 rx7..im sooo happpyyyy!
but it has some issues.
it is running super rich and the secondaries dont open up.
the guy before me said he did everything to camdens specs (holley 350 carb and jets)
but whats making it so rich and why doesnt the secondaries open ?

 

also how do you premix?

 

Premix = 1oz per gallon of gas you fill. Preferred to fill before you put the gas in, so it gets sloshed around real good.

Also, do you have vacuum secondaries or mechanical on your carb? Vacuum will not open on free rev.

 

it has mechanical secondaries. 4150 HP carb
what oil should i use to premix?
also any recommendations for jetting my holley carb for the 7" camden?

http://www.banzai-racing.com/sa_project.htm
there she is!

 

Any 2-cycle oil that meets TC3W specs works for premix. Can't help on the jetting other than pick up a Holley tuning book, a jet kit and a wideband.

 

hmm it has a a wideband, but i was just wondering if anyone has this same setup and could offer some advice.
any recommendations on the 2 cycle oil?

 

If the secondaries don't open, and they are mechanical secondaries, then check your linkages.

Push the secondaries open with your finger, and see if the shaft moves, then work backwards from there.

 

you should just buy a 600 holley and it should run great just out the box......

that 's what I have on mine and it runs bitchin....

 

If they are mech sec then you have an issue with the linkage or not enough travel in your cable. You will need to a hole close to the throttle for the throttle cable button. Take and send pics for more info. Too rich?? Need to know what jetting and pwoer valves you are running to help there and what you afr reading are, idel, cruise, accel.








http://media.putfile.com/blown-rx7

 

well so far all i know is that its a holley 4150 hp 650(i think its 650 carb)
jetting wise is everything recommended by camden.(will get the sizes later)
and that it runs super rich (headers are red hot)

heres the carb

http://www.banzai-racing.com/kotkove...carburetor.jpg

 

What timing are you running?? Get pics of the carb up please. Hope you're running premix...and take that carb apart and see what it really has...

 

i have no clue on the timing i just picked it up yesterday. just trying to diagnose the problem and see what i can do before adjusting anything.

 

I was super rich on idle when i bougt my 600 cfm carb and put it on my camden but i never heated up the header red hot... I thought red hot exhaust was retarded timing.....

 

The original owner (Scott) had supplied a Holley 390 which comes stock with 54 jets, and were upgraded to 59 jets for street use as per atkins instuctions.

http://www.camdensuperchargers.com/index.php?pag=303#17

 

contact atkinsdan on the forums he runs atkins rotary, he really knows his stuff when it comes to superchargers.

 

yea i just bought the sa from scott.
anymore details on the sa banzai-racing?
also is the dizzy locked and how would i time the retard timing for the supercharger?

 

by lossening the bolt on the side of the dizzy and advancing it.
before playing with it go buy a timing light, set your engine to top dead center and see where you are at.
Mark your main pully at TDC with a piece of chalk white for leading and yellow for trailing, hook the timing light to leading 1 and check then trailing 1
I didnt have a locked dizzy on my setup so i dont know what you are looking for timing wise maybe Gary(84 stock) can help out with that bit of info, but i am almost sure he doesnt run a locked dizzy either. as a guess i would get it to 10 before TDC for leading.

 

pm me if you wish, I have been running a camden for years. Used 3 different engines and 5 different carbs ranging from 600-850 cfm. If you're running too much timing you're gonna pop that motor (I've done it myself).

 

how do you find TDC for a rotary?
i have a timing light.

 

bumppp need to know!

 

you have an aftermarket flywheel or stock?

 

aftermarket flywheel.
i have found that the pulley has marks on it already.
not sure if its tdc marked but it has 4 markings on it...guess i will have to take a crapload of pictures.
i think the dizzy is fully retarded? not to sure but the headers heat up really fast.

 

well take off the top inspection plate at the back of the motor on the top drivers side and and turn the crank until you see the counterweightthere will be two bolt heads in plain sight and TDC is when back edge of the counterweight is right in between those bolt heads.

 

like this

 

can you send me a picture of your dizzy?
i think mine is all the way retarded and i need some kind of refercene.