2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.

Many detailed questions regarding manifolds

Old Aug 24, 2003 | 12:48 PM
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Many detailed questions regarding manifolds

1988 GXL N/a 5spd

I've got all the manifolds off my car and it's essentially down to a bare block.

So far i've removed EGR, Cold start, BACV, and Air pump/ACV. I'm also changing my tranny and engine mounts, TB mod, and putting RB headers/presilencer/apexi N1 single on....

Some questions:


1.Is there any easy way to get those old gaskets off the manifolds?

2.What are the absolute necessary Vacuum tubes?

Some of the walkthroughs are not detailed enough...

3.In the TB mod, can you remove that start assist bottle/ charcoal canister on the rear left of the engine bay?

4.What exactly is in that bottle looks like blue/green liquid... does it ever have to be filled?

5. What o.d. hose is needed to replace the small/medium sized vacuum hoses?
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Old Aug 24, 2003 | 01:13 PM
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1.Is there any easy way to get those old gaskets off the manifolds?
Gaskette remover (autozone) Badass Wire brush and and badass razor blade

3.In the TB mod, can you remove that start assist bottle/ charcoal canister on the rear left of the engine bay?
I believe, if memory serves me corrrectly, that the start assist was a total piece of crap to begin with and mazda discontinued it.

4.What exactly is in that bottle looks like blue/green liquid... does it ever have to be filled?
Again, if memory correct, its antifreeze.
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Old Aug 24, 2003 | 01:14 PM
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the bottle in the back passenger side next to the charcoal canister is related to the cold start system....so if you got rid of that system, then get rid of that as well..
its coolant if im not mistaken

i ran for several months without the charcoal canister, i dont think it has any ill effects....
as far as hose size....search my name ......i had that same question last winter, and someone responded with the exact diam. and how many feet i would need as well
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Old Aug 24, 2003 | 01:15 PM
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lol

beat me to it
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Old Aug 25, 2003 | 08:13 AM
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Re: Many detailed questions regarding manifolds

Originally posted by f1blueRx7
What are the absolute necessary Vacuum tubes?
Fuel pressure regulator, oil injector air bleeds, fuel injector air bleeds, manifold pressure sensor.
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Old Aug 25, 2003 | 09:08 AM
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Excellent. So where can i find caps for the nipples that are not used? Are they just like a ADV/Pepboys thing or hardware shop?
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Old Aug 25, 2003 | 09:11 AM
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Originally posted by f1blueRx7
Excellent. So where can i find caps for the nipples that are not used? Are they just like a ADV/Pepboys thing or hardware shop?
Yup. Just match up the caps with the size hose that was on. They sell all kinds of different sized caps.
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Old Aug 25, 2003 | 09:24 AM
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i wouldnt buy vac hose from those stores though as it may be junk

thier are a few online places that sell a good high quality hose and you wont need much obviously
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