Hello,
First time poster and excited to be here.
Picked up my first Mustang - 1990 5.0 with a 5 speed a few months ago. It appears to be a 7up edition but have not verified this. So I've only drove it about 45 minutes home after the initial purchase and then around the block a couple times. After parking it I found a decent amount of oil leaking onto the ground, and most of the engine, trans, underbody seems to be saturated. With winter now set in here in Michigan I figured this is the time to tear into it.
So upon pulling the motor I've found the valve cover bolts to be finger tight lol. Assuming this was the source it since oil was caked all over the engine bay. I've picked up some Explorer parts including upper/lower intake and GT40P heads. I mocked up a set of BBK shorty equal length headers and they may work with 90 degree boots. I also have a B303 cam, 24lb injectors w/ calibrated MAF on the shelf. I have read the A9L ECU can handle these sort of changes, I hope this is true. Just going for a close to stock or mild build.
So today I disassembled the GT40P heads. Need to extract the broken intake bolt I found. But other than that, the disassembly went well. I tried cutting a deep well socket and using my drill press to remove the valve springs. Definitely paid off. I do have the hand crank spring compressor tool and after doing 1 spring by hand I'll go witht eh socket/drill press method from here on out!
I'll attach some photos of the car/engine/heads. I did a dry and wet compression test and then a leak down at 100psi. I'll attach those notes as well. Figure the results weren't horrible and the car was running fine, but any opinions on the results or anything else is this build are welcomed! Would hate to miss some simple stuff while I'm this far in.
TIA
Jake
First time poster and excited to be here.
Picked up my first Mustang - 1990 5.0 with a 5 speed a few months ago. It appears to be a 7up edition but have not verified this. So I've only drove it about 45 minutes home after the initial purchase and then around the block a couple times. After parking it I found a decent amount of oil leaking onto the ground, and most of the engine, trans, underbody seems to be saturated. With winter now set in here in Michigan I figured this is the time to tear into it.
So upon pulling the motor I've found the valve cover bolts to be finger tight lol. Assuming this was the source it since oil was caked all over the engine bay. I've picked up some Explorer parts including upper/lower intake and GT40P heads. I mocked up a set of BBK shorty equal length headers and they may work with 90 degree boots. I also have a B303 cam, 24lb injectors w/ calibrated MAF on the shelf. I have read the A9L ECU can handle these sort of changes, I hope this is true. Just going for a close to stock or mild build.
So today I disassembled the GT40P heads. Need to extract the broken intake bolt I found. But other than that, the disassembly went well. I tried cutting a deep well socket and using my drill press to remove the valve springs. Definitely paid off. I do have the hand crank spring compressor tool and after doing 1 spring by hand I'll go witht eh socket/drill press method from here on out!
I'll attach some photos of the car/engine/heads. I did a dry and wet compression test and then a leak down at 100psi. I'll attach those notes as well. Figure the results weren't horrible and the car was running fine, but any opinions on the results or anything else is this build are welcomed! Would hate to miss some simple stuff while I'm this far in.
TIA
Jake
