dewalt2front

Just wanted to say hello to everyone first and would also like to thank you all for the excellent info I have found on this site. I recently did a nest removal and put on a sterling carb and this little 12a came alive. Thanks busafreak for the great deal on that carb, it rocks. The only problem I have is Im not sure how to vent the crankcase. I had a hard time seeing it in the editorial pics. Could anyone help me out?? Thanks Guys and Gals............Joey By the way it is an 84

64mgb

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https://www.rx7club.com/showthread.p...t=lung+mustard

Stevan

iTrader: (17)

This is my interpretation of the rats nest removal pictorial, and how mines been run for some time now.
I believe it included the crankcase ventilation/purge system.
If you look on page 254 and 256 of the Haynes manual, it is the same routing with the exception of the idle compensator tee-d in between the purge valve and the plastic baseplate.
Please correct the diagram if you see somthing wrong.

vipernicus42

iTrader: (4)

Search up "PCV Valve" in the 1st gen section and you'll find lots of threads on how to do it slightly differently, using a PCV valve instead of the purge valve like Carl did. Many of us have tried it with great success.

Jon

blwfly

iTrader: (4)

ok well on my 83 no emissions what so ever
pipe on filler neck goes to the bowel vent on carb
and center iron vent goes to charcoal canistor i belive
is this right??
i have lung musted i read 64mgs thread brang a little more confussion maybe ill wait till i sober up

on stevans diagram where it saws ac is that air conditioning or for the vacc on hte distrib seing theres two valves

Stevan

iTrader: (17)

ac go's to air conditioning solenoid, dist go's to distributor.
Here is a more complete drawing.

blwfly

iTrader: (4)

so should both vaccum from the distributor be going to the one
in my situation it seems ones goin to the ac the ditrib ones capped and the other ones to where the purge valve goes so should i block those two off and t both into the dist vaccum hole???


edit im reffering tot he valves off the distributor

Stevan

iTrader: (17)

From looking at the Haynes manual, and the FSM with the rats nest intact, there are solenoids that either control just the trailing, or a solenoid for each, trailing and leading(different years), the later years have one for each.
In one description it says the solenoid turns on the trailing when otherwise it would not be active to protect the cat.
If you have no nest, there is no way for it to be controlled, unless one of the ports is only open when the secondaries open? It may not matter, but I would use one line with a T.

Also, if you have just a hose from the filler tube to the bowl vent, there is no place for either fumes to go, they need to be sucked into the intake and burned. You need a purge valve or a PCV.

Hope I helped you.

Hyper4mance2k

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dewalt2front

thanks everyone...I believe I have what I need.

Wankelguy

On an SA it's really simple, you just run one hose from the carbon canister in the aircleaner lid to the fitting on the center housing, tee in the smaller tank purge line, and install a little breather filter on the nipple on the oil filler tube. You do need to be careful adding oil so you don't get oil in the little breather filter.

blwfly

iTrader: (4)

lol i love that
sorry i was hungover when i posted
but i guess he figured what was meant thanks it did help ill read up about the pvc valve

so does just putting a little breather filter on the oil filler tube work just as good then hookin up the valve i thought the tube need some sort of vaccum the filter would look cool from what iv seen on mg64s