cololant on engine

Pete_89T2 · 09-14-2013, 05:47 AM

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.

bowjangles · 09-15-2013, 05:34 AM

Thanks for your input Mr. Pete.
I wish I could find out more about the engine.It was installed in a '80 Triumph TR7 that I recently purchased. The engine is stamped 13 B. Engine number on the block is B 63798.I would love to find out what year is so that I can order some replacement parts. Even called the Mazda dealer- no help there!

Also it has a manual choked Nikki carb on it that also has no Id. numbers either- would like to rebuild that, but alas- don't know model number or year.

The coolant leak was indeed the 2 rubber O-rings that are between the intake man.and the block- they were cracked and deformed- problem solved!

09-14-2013, 05:47 AM	#1
Pete_89T2 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.

09-15-2013, 05:34 AM	#2
bowjangles Rotary Fan in Training Join Date: Sep 2013 Posts: 62 Rep Power: 12	Thanks for your input Mr. Pete. I wish I could find out more about the engine.It was installed in a '80 Triumph TR7 that I recently purchased. The engine is stamped 13 B. Engine number on the block is B 63798.I would love to find out what year is so that I can order some replacement parts. Even called the Mazda dealer- no help there! Also it has a manual choked Nikki carb on it that also has no Id. numbers either- would like to rebuild that, but alas- don't know model number or year. The coolant leak was indeed the 2 rubber O-rings that are between the intake man.and the block- they were cracked and deformed- problem solved!