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| RX-7 2nd Gen Specific (1986-92) RX-7 1986-92 Discussion including performance modifications and technical support sections. | 
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|  04-01-2012, 06:03 PM | #1 | 
| The Newbie Join Date: May 2010 
					Posts: 21
				Rep Power: 0  | 
				
				Is my exh mani and turbo just scrap?
			 
			
			took a look at the turbo for shaftplay, didn't feel a thing, but I did find cracks where it mates with the exhaust manifold. Took a look at the manifold as well and my heart sank. Took some pics to get some opinions on what options I can take... Here's what I found on the turbo side of things...    And here's what I found on the exhaust manifold...  Thoughts/tips on actions to take? | 
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|  04-02-2012, 02:21 AM | #2 | 
| RCC Addict Join Date: Mar 2008 Location: Honolulu, Hawaii USA 
					Posts: 1,813
				Rep Power: 19  | 
			
			Typical of cracks on stock turbos... You might lose a little of efficiency from the cracks, but I bet the butt dyno can't feel a thing. More importantly, if cracks extend into mating areas of (metal) gasket, it can kill the gaskets prematurely. The one big crack by the stud on the turbo exhaust manifold will surely kill the metal gasket in a very short time. Good news is that those S4 turbo parts are a dime a dozen. Check classfieds, eBay, etc. for good, used replacement parts. -Ted | 
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|  04-02-2012, 12:49 PM | #3 | 
| RCC Contributor Join Date: Mar 2008 
					Posts: 535
				Rep Power: 18  | 
			
			Some of the cracks can be welded  but the one with the stud would make me think about finding a better one as RETed said .
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|  04-28-2012, 07:09 PM | #4 | 
| The Newbie Join Date: Apr 2012 Location: Baltimore 
					Posts: 5
				Rep Power: 0  | 
			
			Is there an aftermarket header you could upgrade to?
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|  05-05-2012, 03:40 AM | #5 | 
| Rotary Fanatic Join Date: May 2010 
					Posts: 138
				Rep Power: 16  | 
			
			Turbo/Manifold --> header = downgrade
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|  05-05-2012, 03:22 PM | #6 | 
| Professional Stick Poker Join Date: Feb 2011 Location: Stafford, Ks. 
					Posts: 1,016
				Rep Power: 16  | 
			
			I believe you meant an aftermarket turbo manifold/downpipe assembly. Most people build their own or some of the vendors on here have built them for customers. But there's just not much point in it if you're running the stock turbo. As RETed said the stock parts are relatively plentiful and much cheaper than custom made pieces. My FWIW opinion.
		 
				__________________ 1988 N/A SE 2+2, dead stock and staying that way.  1979 SA22C stock? Not so much. http://rotarycarclub.com/rotary_foru...ad.php?t=15585 | 
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