Tee from fpr.

 

What does everyone do with those useless things? I should have pulled and plugged them while i had the chance. Maybe ill hook them up to a filter through a solenoid as a sort of electric choke/idle up.

 

the what now?

 

Should have said intake mani, not TB.

These *******, see the gayness i have going on now.

 

lol vac caps are like $3 for a pack of 10.

 

I know, I need to get some in the right size that are made of quality rubber. Its just that if there are ports, they should be used, if not, they shouldn't exist.

 

I think I bought some plastically ones in the hardware section of home depot that work great.

 

Jbweld. Problem solved.

 

I use one for my blowoff valve and I might end us using the other for cruise again, though I'd like a all electronic unit that don't use vac...

Don't you need vacuum for the BOV?

Also, what the hell are the ports on the first and fourth intake runners? Are those normal, you have them too?

 

Probably vinyl. Anything has to be better than what the parts stores offer. The last assortment I got literally dry rotted and fell off in a matter of months. Ill look for some silicone ones on ebay maybe.

possibly

Yes thats right, I need one for the BOV, so there's one I can re purpose.

The port on runner 1 connects to the TB on mine and appears to either be part of the base idle circuit or IAC. The port on runner 4 is a mystery and was blocked off from the factory.

 

That port on the back is the same size right? I'd try and order that sucker, mine's not moved in 25 years even under boost. I didn't know it was even there till I took the manifold off. Kinda forgot the front one goes to the throttle body, had to go look real quick.

I used painters tape to seal one of mine up, can't believe it's lasted all this time...

 

I think they are all the same 4 or 5mm OD ports. That cap is a meaty little ******, held on with a constant tension spring clamp. Not a bad idea deezums. Its kinda funny, when i was attaching everything back to the mani, I used safety wire and tied it properly with the right twisting pliers and all. I could still pull it off by hand without to much effort. I put the gay little constant tension clamp back on and its impossible to remove by hand lol.

 

pg. 37
http://www.lightweightmiata.com/docu...3%20ENGINE.pdf

0223-42-307


CAP | Genuine Mazda | 0223-42-307

4mm ID

 

You have spring clamp?

I should have done that! I guess that's something else my previous owner removed, nice!

Wish those things were easier to find, I'd actually like a few for my PCV setup.

 

I do, and it appears original.

Theyre everywhere, just search "constant tension clamp".

constant tension clamp | eBay

http://www.amazon.com/s/ref=sr_nr_n_...41120011&ajr=0

 

Ah, I meant locally. Sizing those things is a PITA as you've found, since they need to be close. I'd like some larger ones and they're a bit bigger than the auto parts stores here have.

I'll probably end up ordering a whole crapload online.

 

All my caps arent even clamped, except for the one capping the pcv port because that one's pretty big. All the small ones just stay on with friction. And I've hit my 20psi boost cut a bit lately between cranking up wgdc to "fix" things like no wastegate preload or boost solenoid unplugged.

 

Gotcha.

Also the Mazda ones are really nice quality, not like the ebay or parts store junk. I actually studied it pretty well when it was in my hand as it caught my eye. They are 2 layers of spring steel somehow bound together. Which if you think about it is really ******* awesome. It keeps the spring rate the same while allowing for more flex before yield as well as more cycles. It was meant to be reused.

BAM!
CLAMP SMALL,HOSE (JF02-15-538) - $3.59 - JF0215538

They even come with a little clip that holds them open until your ready to use them.

 

Lol, and i went ahead and ziptied every little connection so far.

 

Small black zipties on every little vac cap for me.