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Old 08-01-05, 04:26 PM
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Simplified Vacuum Setup Questions

Sorry to drag this up, I've done tonnes of searching but on 56k it isn't much fun

I am in the middle of sorting those horrible hoses out and thought I may as well go simplified but I have a few questions

1) Once the ACV is removed, where did you get your block off plates from and what did you use to seal it? (instant gasket?)
2) Does the pressure chamber (in the position suggested by Wade) mount straight up to wher the ACV was or is a tap required?
3) Is it worth getting braided lines? and if so whats the best place/make you've found to get them from?
4) What did you use to block up all the other vacuum points that aren't needed? Just 4 & 6mm caps (like the ones fitted in a few places on the car)
5) Please post pics of your engine bay with this done

Daves stupids:
1) This job is dam hard, I've changed engines easier than this
2) Yes really cover all the holes you unveil, I now have to get to the primary turbo as I dropped a nut down the turbo down pipe - lol, I was pissed at the time but now I can see its pretty funny
3) DO NOT SKIN the screws holding the nest in place, odly the rear screws came out fine but the fronts really didn't want to know, I have spent the has 10 hours removing fuel lines, the oil filler cap, brackets and god knows what else to remove the whole of the nest

Thanks alot.... worst job I've done on a car by a clear mile but I still love my FD for some reason!

Dave

Last edited by DS2000; 08-01-05 at 04:37 PM.
Old 08-01-05, 04:48 PM
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Originally Posted by DS2000
Sorry to drag this up, I've done tonnes of searching but on 56k it isn't much fun

I am in the middle of sorting those horrible hoses out and thought I may as well go simplified but I have a few questions

1) Once the ACV is removed, where did you get your block off plates from and what did you use to seal it? (instant gasket?)
2) Does the pressure chamber (in the position suggested by Wade) mount straight up to wher the ACV was or is a tap required?
3) Is it worth getting braided lines? and if so whats the best place/make you've found to get them from?
4) What did you use to block up all the other vacuum points that aren't needed? Just 4 & 6mm caps (like the ones fitted in a few places on the car)
5) Please post pics of your engine bay with this done

Daves stupids:
1) This job is dam hard, I've changed engines easier than this
2) Yes really cover all the holes you unveil, I now have to get to the primary turbo as I dropped a nut down the turbo down pipe - lol, I was pissed at the time but now I can see its pretty funny
3) DO NOT SKIN the screws holding the nest in place, odly the rear screws came out fine but the fronts really didn't want to know, I have spent the has 10 hours removing fuel lines, the oil filler cap, brackets and god knows what else to remove the whole of the nest

Thanks alot.... worst job I've done on a car by a clear mile but I still love my FD for some reason!

Dave
1) Either build the block off plates yourself (using the gasket as a template), or buy some from RX7.com, or gothamracing.com. I'm sure there are other places that make or sell them, but those are the two that I'm familiar with. Use a good quality silicone sealant to make the gasket (I recommend Permatex's "the right stuff")
2) Pressure chamber does not "bolt" anywhere. On his simplification page, Rob Robinette placed it underneath the UIM where the ACV used to be. You can wedge it in there (it won't move), or place some velcro on there to be sure.
3) Braided lines? I'm assuming you're talking about oil metering lines. I would not recommend replacing the stock ones unless they are broken. If they are, then yes, go ahead and upgrade to braided.
4) Use good quality caps. The cheapo rubber ones from the auto store WILL fail. I recommend getting some good quality silicone (or similar) nipple caps from mcmaster.
5) This is with my custom solenoids (group buy going on right now!)
Old 08-01-05, 05:04 PM
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Originally Posted by DS2000
Sorry to drag this up, I've done tonnes of searching but on 56k it isn't much fun

I am in the middle of sorting those horrible hoses out and thought I may as well go simplified but I have a few questions

1) Once the ACV is removed, where did you get your block off plates from and what did you use to seal it? (instant gasket?)
2) Does the pressure chamber (in the position suggested by Wade) mount straight up to wher the ACV was or is a tap required?
3) Is it worth getting braided lines? and if so whats the best place/make you've found to get them from?
4) What did you use to block up all the other vacuum points that aren't needed? Just 4 & 6mm caps (like the ones fitted in a few places on the car)
5) Please post pics of your engine bay with this done

Daves stupids:
1) This job is dam hard, I've changed engines easier than this
2) Yes really cover all the holes you unveil, I now have to get to the primary turbo as I dropped a nut down the turbo down pipe - lol, I was pissed at the time but now I can see its pretty funny
3) DO NOT SKIN the screws holding the nest in place, odly the rear screws came out fine but the fronts really didn't want to know, I have spent the has 10 hours removing fuel lines, the oil filler cap, brackets and god knows what else to remove the whole of the nest

Thanks alot.... worst job I've done on a car by a clear mile but I still love my FD for some reason!

Dave
1.) Get the block-off plates from www.rx7store.net because they include a block-off plate for the Double Throttle removal, and order new gaskets from Mazda. The original ones were paper, but the updated ones are metal.
2.)Mount it in the original location. Not subjected to as much heat as under the UIM.
3.) Braided lines for what? fuel? Not recommended if you're still using the stock fuel system due to nothing more than pure aggravation. I would replace the OMP lines with aftermarket, since you are there.
4.) You can just use vacuum caps or if there are two lines beside each other you can just use route one to the other with a piece of hose.

Last edited by quicksilver_rx7; 08-01-05 at 05:13 PM.
Old 08-01-05, 06:07 PM
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Thanks guys, always awesome as usual

Braided lines are for fuel, because my nest screws didn't come undone I had to undo the whole fuel system n god knows what else

A couple of the fuel lines were stuck on solidly and I don't like pulling on fuel rails and other bits too hard so I had to cut them away, I'm thinking now of leaving the whole metal unions out and just going straight from the piping to the rail

As I've got all this out I am thinking about throwing a bit of money at her but I guess really, get her working, get the needed gauges n then progress

Thanks all!

Dave
Old 08-01-05, 11:39 PM
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all you need is some high-pressure/high-temp fuel hose. You can do braided steel if you like, but I found that the cost for me at the time of my project was just out of the scope of reason. Plus, a lot less hassle.
Old 08-02-05, 10:51 AM
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Cheers guys, next question:

There is a pipe that runs from the back of the IM and IIRC it goes back into the airbox, did you also block this off, I can't the back of the IM in any photos sadly

There are two metal pipes and it is held on with 3 nuts/bolts

Thanks!

Last edited by DS2000; 08-02-05 at 10:54 AM.
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