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1984 RX-7 Race Car with BP! (almost a Miata)

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Old 10-06-2012, 11:05 PM
  #121  
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Yeah what a pain in the butt to make it work with twin scroll! This better be worth it! haha
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Old 10-06-2012, 11:07 PM
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Pretty sure it will be.
That tube layout and twin scroll is what all the people making a LOT of power are running (on other cars). And when I say a lot I mean more than almost all miatas
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Old 10-06-2012, 11:09 PM
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So you are saying Fae is not running twin scroll? haha
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Old 10-06-2012, 11:11 PM
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Or any kinda scroll....Just his mouth
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Old 10-06-2012, 11:13 PM
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Speaking of that, his thread is burried somewhere. I should bring it alive hah
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Old 10-06-2012, 11:45 PM
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Not sure if this was mentioned before. Is this going to be internally wastegated? There's nothing to be seen for an external. Reasons?
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Old 10-06-2012, 11:47 PM
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yes! BorgWarner EFR 8374 twin scroll! Their internal wastegate is the cats-***! As it is, I will be running a 4" exhaust, so no issues there either! Going with the good old KISS rule! (keep it simple stupid)
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Old 10-07-2012, 12:11 AM
  #128  
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I don't remember if Fae is running a twin-scroll mani, I think he just has a quick-spool valve.
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Old 10-07-2012, 09:38 PM
  #129  
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Had a cheap china-charge around that put it on the manifold with one bolt! Manifold is pretty much done. Some welding is still required, but waiting for a smaller TIG torch to arrive! Will start the rest of the exhaust tomorrow.











Attached Thumbnails 1984 RX-7 Race Car with BP! (almost a Miata)-img_0337.jpg   1984 RX-7 Race Car with BP! (almost a Miata)-img_0338.jpg   1984 RX-7 Race Car with BP! (almost a Miata)-img_0339.jpg   1984 RX-7 Race Car with BP! (almost a Miata)-img_0340.jpg   1984 RX-7 Race Car with BP! (almost a Miata)-img_0341.jpg  

1984 RX-7 Race Car with BP! (almost a Miata)-img_0342.jpg  
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Old 10-08-2012, 03:29 AM
  #130  
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What are great looking project. I love the updates.

What pipe are you using for the manifold? Also, do you have any plans for bracing or a crane?
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Old 10-08-2012, 01:48 PM
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Thank you!
It is schedule 10 stainless. Yes I will have a crane on the T4 flange. Have to figure out where. The EFR turbo is on back-order, so I will figure that out once it gets here to make sure there is enough room!
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Old 10-09-2012, 01:59 AM
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And I have the side pipe figured out!







Attached Thumbnails 1984 RX-7 Race Car with BP! (almost a Miata)-img_0343.jpg   1984 RX-7 Race Car with BP! (almost a Miata)-img_0346.jpg   1984 RX-7 Race Car with BP! (almost a Miata)-img_0348.jpg   1984 RX-7 Race Car with BP! (almost a Miata)-img_0353.jpg  
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Old 10-09-2012, 10:05 AM
  #133  
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Isn't it going to get crazy hot inside with that thing?
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Old 10-09-2012, 11:09 AM
  #134  
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Well there is going to be a box made around the muffler with gold shielding. We have done it before and it works well!
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Old 10-09-2012, 12:19 PM
  #135  
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what about the CAS and coolant outlet?
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Old 10-09-2012, 12:21 PM
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I've made sure there is plenty of room between those and the exhaust. I will most likely wrap the exhaust there too as the flex will go there!
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Old 10-09-2012, 12:51 PM
  #137  
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What do you guy recommend as far as a crane setup? I have seen a few, but what are your experience?
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Old 10-09-2012, 02:42 PM
  #138  
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I thought it was against many racing organizations' rules to have exhaust components inside the driver's compartment at all. I am certain it was in ChumpCar (who copies others' safety guidelines) and I think it is in NASA but I haven't looked yet. I won't bother to look through 1800 pages of SCCA rules.

Just a heads up, that's all.
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Old 10-09-2012, 02:52 PM
  #139  
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It's not in the driver's compartment. It will have a box around it and separated! We have done this before on multiple cars!
Last edited by bcrx7; 10-09-2012 at 03:13 PM.
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Old 10-12-2012, 01:51 AM
  #140  
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Well the exhaust is all done and welded. Only piece required will be an elbow from the turbo to the flex when the turbo shows up!









Attached Thumbnails 1984 RX-7 Race Car with BP! (almost a Miata)-img_0363.jpg   1984 RX-7 Race Car with BP! (almost a Miata)-img_0364.jpg   1984 RX-7 Race Car with BP! (almost a Miata)-img_0366.jpg   1984 RX-7 Race Car with BP! (almost a Miata)-img_0367.jpg   1984 RX-7 Race Car with BP! (almost a Miata)-img_0369.jpg  

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