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61
1st Generation Build thread / Re: My little 79 spark
« Last post by ~Groll69~ on September 02, 2020, 10:46:10 AM »
Same,  Looks good.  Hopefully we will see it in person soon.  Looking forward to additional pics when you get them.
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1st Generation Build thread / Re: Ruby - 1980 SA
« Last post by toplessFC3Sman on September 02, 2020, 07:00:11 AM »
Wow, looks mint!
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1st Generation Build thread / Re: My little 79 spark
« Last post by toplessFC3Sman on September 02, 2020, 06:57:42 AM »
That's a great color, and it looks like it's in good shape! Can't wait to see it in person.
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1st Generation Build thread / Re: Ruby - 1980 SA
« Last post by FCwidman on September 01, 2020, 07:39:02 PM »
Looks great! I wish mine had the 4 spoke steering wheel, I've got the 2 spoke one.
Those seats look pretty cool too. Any plans for it?
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1st Generation Build thread / My little 79 spark
« Last post by FCwidman on September 01, 2020, 07:37:14 PM »
Recently picked up what is basically my dream 1st gen this past weekend. A 79 SA rx7 S in none other than spark yellow! All I need now is a CYM FD and a lightning yellow rx8 and I'll have all yellow rx cars lol.
3rd owner (basically 2nd, guy only had it for 2 months), 85k miles, 4 speed manual, completely untouched minus a radio upgrade in the 80's (it's terrible). My plans are to keep it the way Mazda intended it to be from the 70's, with the exception of maintenance upgrades and period correct wheels (I love the waffles but their sooo small.)

Don't have too many pictures of it just yet, but I'll take some soon.

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1st Generation Build thread / Ruby - 1980 SA
« Last post by ~Groll69~ on September 01, 2020, 05:20:32 AM »
Well PJR posted a link for this car in the chat box.  It was his old neighbors car and she had decided to sell her after 34 years of wonderful ownership.  Nancy was the second owner and purchased the car in California in 1984.  The following year she moved to Michigan in 1985.  She has always stored the car and it has never seen snow.  She decided to retire from her job at Ford and move to Florida.  She felt it was time to find a New owner for her beloved little car.  The car has it's original owner's manual in the glove box.

I had seen it in PJR's posting and contacted him.  I pooled all my financial resources together to get the car and made my offer through PJR.  The car came with the glass sun roof and a color matched moon roof too.  The interior is Black with a Renaissance red paint color.  I did not get the car cover for it, so that will be a future purchase.  My plans for the car is just to maintain her and enjoy her as a cruiser.  Everything on it works.  The choke sticks a little and the parking brake needs to be adjusted better.  Ruby is a great little addition to my collection giving me one of each generation now.
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Rx-8 Build Thread / Re: Vera's Story - '09 RX-8 Sport
« Last post by toplessFC3Sman on August 25, 2020, 04:48:32 PM »
I suspect that in my haste that morning at the track, I overfilled the oil (or at least filled it too quickly). This made it slosh around more under cornering and cause these issues. Now... I don't think I did, since checking the oil at the track 2 weeks ago, and again this time, showed the low hole in the dipstick filled but the high hole was not filled (although there was oil residue around it). However... its really the only explanation that I can think of, since the PCV system doesn't contain any solenoids or even check valves.
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Rx-8 Build Thread / Re: Vera's Story - '09 RX-8 Sport
« Last post by ~Groll69~ on August 24, 2020, 08:16:46 AM »
so glad it worked.  Odd how she fixed herself.  maybe a vacuum solenoid wasn't working properly or working periodically.
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Rx-8 Build Thread / Re: Vera's Story - '09 RX-8 Sport
« Last post by toplessFC3Sman on August 23, 2020, 06:48:18 PM »
Well, the catch can definitely worked - no misfires and the can collected about 2 oz of oil in each of the first two sessions. Then... Vera fixed herself? The last two sessions had no oil at all! How strange!
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Rx-8 Build Thread / Re: Vera's Story - '09 RX-8 Sport
« Last post by toplessFC3Sman on August 21, 2020, 07:39:13 AM »
Well, I went down the rabbit hole a bit on trying to understand the PCV and vacuum setup on the RX8 so I would know where to put the catch can etc. Well... turns out it seems like the 2011 S2 diagram and my 2009 S2 car are a bit different.

The FSM diagram only shows two connections to the oil fill neck; the red and green lines shown below:

The green line comes from the pre-throttle accordian to provide fresh air at atmospheric pressure to the sump, which is drawn out through the red line at the top of the fill neck and is shown as going back into the manifold just after the throttle body. The blue line that I drew on there does not exist on the diagram, I just put that on there to show approx where a third mystery vacuum line connects.

Here is the engine itself (with the alternator, upper intake manifold, throttle and accordian etc removed):


The green hose is exactly as shown, running from the accordian to the bottom of the oil tank right above where it enters the center iron. This tube definitely had oil getting pushed back through it and leaking into the accordian, filter box etc, so this is the tube that I put the oil catch can in the middle of (pictures to follow).

The red hose is confusing - it comes off the top of the oil fill neck, but instead of running to the manifold just after the throttle body, it runs down the passenger's side of the engine to a "T" that is then connected to nipples going into the two primary runners. Sure, this is still a vacuum source, but not only is this a much different location than the diagram shows, but I also think that this location on the primary runners are the jet air nozzles to help with fuel atomization. However, this connection in the diagram appears to go to the second connection in the accordian (also roughly atmospheric air, but not from the sump). So... functionally this should work similar to the diagram, but why are they different? This also raises the question... where does that second line from the accordian actually go to if it's not running to the jet air connection?


Finally... what is that blue line, and where does it go? Well, lets see... it heads under the oil tank, so off that comes too, to find a mess of hoses and vacuum lines.

Well, it connects to another vacuum port on one of the OMPs. Not sure why it wasn't shown on the other diagram, even if just as an arrow pointing to a call to another diagram.

Well, since oil was definitely coming through the green line into the intake accordian, I installed the oil catch can in that line. Cue the bracket-making (nowhere near as nice as the "Bad Obsession Motorsports" guts).



And here it is, tucked between the fuse box and ABS pump. The original green line to the oil tank was long enough and shaped close enough to just re-use going to the inlet port of the catch can, and 3/8" piece of left-over hose was used to run from the outlet over the top of the accordian back to the original connection.


Now, we'll see how the day at Waterford on Sunday goes, and whether any more accumulates here etc. Hopefully its not excessive blowby, but if it is... well... I may just need to be catching and draining oil for a while until I'm ready for a rebuild.
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