Replace the stock manifold and all cats with a bolt on Racing Beat header and pre-silencer. $400+ http://racingbeat.com/FRmazda1.htm
or
Keep the stock manifold and just replace all the cats with a Bonez race pipe from Rotary Performance. $75 http://www.rx7.com/store/rx7/saexhaust.html

Rotary Performance also has replacement cats, if you want to go that route.

 

are the studs in the stock manifold removable because the nuts where so badly rusted they snapped off so if they arent removable i dont think i will be able to go that route..

 

i agree with this diagnostic. My Fb did the same thing when I first purchased it and the hose seemed to be in good shape. You have to either put the car up in the air or cram your hand down between the back of the intake mani and the firewall and you have to follow the hose until it turns 90* toward the front of the car. I had to put my FB up on a hoist and remove the exhaust manifold to find the leak.

 

They should be removable with a drill and bit. I'd say fire up the car w/o the cats on (it will be loud as hell, i ran mine with an uncollected RB header and nothing else in my Grandpa's barn and it was one of the loudest things i've ever heard) to see if the car runs well without the cats on. If so, the cats are your problem. You have all winter to get this thing up and running, so don't rush things. Your progress looks really good.

 

well its a project believe that. looks like the people before me just let it go.. there where pencils yes i said pencils and bolts shoved in vac lines.. everytime i solve one problem i find another

 

ok i disconnected the pipe from the header to make sure it had more breathing room and well i still im dying after running for a few.. the choke dont even have the time too kick off. once it gets too about 1500 it just falls from there.. wish i had a way to make a video to show you guys whats goin on..

 

74rx4 can you please link me too the mazspeed (mods made simple book thing) the whole thing preferably i need the rats nest removal but would like to check out the rest of it also!

 

Here's a link to all their tutorials
http://www.mazspeed.com/faq3.htm

 

it just wont start i dont get it.. it acts like it wants too. it will fire for a second and then die..

 

you think its just flooded?

 

You never said what condition you found the #2 anti-afterburn hose in. That is not the pipe to the cat. It goes from the #2 anti-afterburn valve to the intake manifold.

 

yrs i stated earlier in the thread that i checked the hose and it looked in good condition too me..

 

bump for advice

 

ok i think im gonna go ahead with the removal of the rats nest and emissions and see where that goes.

 

un flooding procedure? where do i find ot how too unflood my engine? my plugs are soked in gas and well i cant seem to find the procedure in the fsm.