Motor tear down

March 04, 2007, 02:15:55 AM

Hey guys, I started tear down of my 302 that I pulled from my 94 rustang parts car. First a little history: I bought the car for the 5.0 and T5, and found out from the kid I bought it from that the owner previous to him had a Jasper motor installed. Plus he said that from what the guy told him, the motor had about 14,000 miles on it.

I haven't gotten too far yet, but so far the intake came off pretty easily, and the driver side head came off like butter. I was kinda expecting the intake and heads to be real tough to pull loose (first time tearing a motor down this far :hick: ) but was pleasantly surprised. Guess it helps the motor doesn't have alot of miles on it.:D

So far, to my untrained eye, things look pretty good, which leads me to believe the reported milage on the motor is acurate. I'm kinda surprised at the size of the pistons though. According to the numbers on the piston, they're Sealed Power brand, .040 over:eek:

Not that .040 seems like a huge number to me, just wasn't expecting that on a reman motor.

Here's a few pics so I don't get mauled by the pic ws:flip:

Motor tear down

Reply #1 – March 04, 2007, 02:18:31 AM

And here's one of the cross hatching on the cylinder wall. Still seems pretty good. Sorry it's not that good of a pic, but yes, I did try using the Macro function:p

Motor tear down

Reply #2 – March 04, 2007, 05:45:06 AM

Looks good. Throw some heads back on it, run synthetic and spray the piss out of it.

Motor tear down

Reply #3 – March 04, 2007, 10:59:31 AM

LOL. I've heard bad things about cast aluminum slugs and juice.:D I do have a set of twisted wedge heads waiting in the wings.

Motor tear down

Reply #4 – March 05, 2007, 02:25:30 AM

I've noticed in a few posts that .030 over pistons bump the CI to 306, what would these .040 over pistons bump the CI too?

Motor tear down

Reply #5 – March 05, 2007, 08:17:19 AM

Quote from: Warbird9;132573

I've noticed in a few posts that .030 over pistons bump the CI to 306, what would these .040 over pistons bump the CI too?

((((Bore+.040)/2)^2) x 3.1415926) x stroke x 8

:hick:

Or, if you just want the answer.... 308ci

Motor tear down

Reply #6 – March 05, 2007, 10:19:43 AM

Looks good. It's nice that it was low mile. How come the one piston is so much cleaner than the others? :hick:

Motor tear down

Reply #7 – March 05, 2007, 11:42:46 AM

Thanks Chuck, my math is pretty rusty, that one would've given me a massive cranial megahurt.:D What's the ^ symbol mean?

Thunderjet, that's from old fashion elbow grease, lol, just so I could read the piston markings.

Motor tear down

Reply #8 – March 05, 2007, 11:59:25 AM

Quote from: Warbird9;132620

Thanks Chuck, my math is pretty rusty, that one would've given me a massive cranial megahurt.:D What's the ^ symbol mean?

^2 = squared....

Motor tear down

Reply #9 – March 05, 2007, 01:03:57 PM

:D Thanks Chuck!:D________:dunce: ---> me:hick:

Motor tear down

Reply #10 – March 05, 2007, 03:21:13 PM

Quote from: Warbird9;132620

Thanks Chuck, my math is pretty rusty, that one would've given me a massive cranial megahurt.:D What's the ^ symbol mean?

Thunderjet, that's from old fashion elbow grease, lol, just so I could read the piston markings.

Ah I see:D

Motor tear down

Reply #11 – March 08, 2007, 12:42:36 AM

Well, while working on the motor more today, I noticed an odd hole between the lifter vally and timing chain area. Just thought it looked odd. Also, I was looking at the oil pressure sender, and was wondering if we could use that one with our sender gauges, istead of hunting down an extender and using the big can lookin thing.

For this car it won't really matter since I'll be using an Auto Meter oil pressure gauge and sender, but thought it might be of interest.

Motor tear down

Reply #12 – March 08, 2007, 12:51:54 AM

Yikes! I can't say that hole looks like it was machined there, but I'm not an expert. I've torn two of these smallblocks apart, but that's it.

Otherwise, the motor looks clean, to me. You should see the horrific pictures of the inside of my 70k mile Cougar motor *sludge city* vs the 200k Crown Vic motor.

EDIT: PS - That sender looks like a "Low Oil Pressure" light switch.

Motor tear down

Reply #13 – March 08, 2007, 01:32:46 AM

Uh I don't think that hole is supposed to be there. I know the 5.0 I just had rebuilt doesn't have that. It looks like something failed bad and punched the hole. It doesn't look like it would cause problems though, but I could be wrong.

Motor tear down

Reply #14 – March 08, 2007, 10:02:57 PM

Quote from: Ifixyawata;133172

EDIT: PS - That sender looks like a "Low Oil Pressure" light switch.

The rustang has an oil pressure gauge in-dash, and I didn't see any other sender units for oil.

Anyone else have thoughts on my "speed-hole" or the sender unit?