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| RX-7 1st Gen Specific (1979-85) RX-7 1979-85 Discussion including performance modifications and technical support sections | 
|  | Thread Tools | Display Modes | 
|  09-14-2013, 05:47 AM | #4 | 
| Lifetime Rotorhead Join Date: Apr 2010 Location: Elkton, MD 
					Posts: 874
				Rep Power: 16  | 
			
			The OP said this is a 13B, and it's in the 1st gen section so I'm assuming it's a GSL-SE or a 13B transplant from a 2nd gen, is this correct? If so, the first thing I'd check is the small coolant bypass hose that pipes coolant from the rear housing, through the throttle body/thermo wax and back to the water pump housing. A leak in any of those hoses could result in coolant pooling where the OP stated. The intake manifold O-rings could also be bad, but I don't think that's the case here, since OP said the coolant was on the top side of the mani - coolant won't flow against gravity to pool there. | 
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