Stang is going to need a new motor

[xj220]

The constant tapping sound that is probably our valves is getting worse. We just got it out of the shop (for other reasons) and the mechanic said that he didn't feel comfortable driving above 3K rpm. We step on the gas and the revs go up but you don't feel much power. The engine is losing pressure. So, what do you guys recommend for crate engines? Nothing over the top, 300 hp max and not too expensive. Have any of you guys had any experience with www.enginesr.us ?

 

[65fastback2+2]

why not put GT40 heads on that one and keep the motor???

 

[Mach1steve]

It just may be that the cam is so worn that you don't get much in the way of valve lift, thus the lack-luster performance.
Have you have a compression test done ?
Perhaps just having a stock rebuild done and maybe add a perkyer Cam would do it.
300hp isn't much to ask.
there's Crate motors out there at 500hp
In fact, it isn't even Horsepower you should be looking at, it's Torque.... the more the btter.
The only time lotsa Horsepower is needed is very very high speed driving. The Horsepower helps you over 4,000rpm
It's the Torque that makes it a tire smokin monster !
Look for something (or build something) that gives you lots of Torque (350 ft.Lbs.)early (2,000rpm) and you'll be VERY happy with the performance... I garantee it.

Mach1steve
www.muggziperformance.com

 

[xj220]

We had a compression test so that's how I know we're losing pressure. I'd love to get gobs O power but there's two limiting factors: 1.money 2. rear gears (which goes back to #1). I forgot to mention too that oil pressure is low in the beginning and takes a bit to get up. The engine is just tired.

 

[65fastback2+2]

We had a compression test so that's how I know we're losing pressure. I'd love to get gobs O power but there's two limiting factors: 1.money 2. rear gears (which goes back to #1). I forgot to mention too that oil pressure is low in the beginning and takes a bit to get up. The engine is just tired.

neither of which mean a completely gone motor, low oil pressure is caused by the compression being sorry which is caused by the heads and cam, get new heads and cam and go with it

 

[pabear89]

But Cheap power from a tired motor?
Figure out how much you will spend pulling all the parts togeather,
the machine shop$ and the wait.
A Crate motor looks Real Good.


PB

 

[LMan]

what are your compression readings?

 

[302 coupe]

neither of which mean a completely gone motor, low oil pressure is caused by the compression being sorry which is caused by the heads and cam, get new heads and cam and go with it

Compression and oil pressure are not related. In fact, an engine could have all the oil pressure in the world even if it had 2" holes drilled in the pistons. If there is excessive blow-by from having worn cylinders/pistons, you will have a problem with oil consumption, but not oil pressure(so long as you haven't burned all the oil).

I would pull the heads and check the ridge at the top of the cylinder bores. If it is excessive or is oblong(warped cylinders), you'll need to rebuild the shortblock. If the ridge is minimal and true to shape, I'd be real tempted to just install a new oil pump and see if that corrects your oil pressure problems. You might want to pull a rod cap and inspect the bearings while you're at it, they may be ok. My point is, with regular oil changes, a short block will last a lot longer than most people think. You may be fine with an oil pump and a new set of heads and a cam. Only way to know is to start tearing it down.

 

[WORTH]

neither of which mean a completely gone motor, low oil pressure is caused by the compression being sorry which is caused by the heads and cam, get new heads and cam and go with it

WRONG

 

[Max Power]

LOL....wrong as hell!!!

 

[65fastback2+2]

hey i knew it was wrong after i posted it, i was too busy to edit it haha, i just thought i was thinking compression as far as head gasket and the oil as far as the head gasket leaking. so it is slightly possible, but not normally related.

 

[WORTH]

hey i knew it was wrong after i posted it, i was too busy to edit it haha, i just thought i was thinking compression as far as head gasket and the oil as far as the head gasket leaking. so it is slightly possible, but not normally related.

Your just getting DEEPER

 

[65straightsick]

Nice cover......bust!

 

[65fastback2+2]

Your just getting DEEPER

so if my head gasket is blown and im losing oil, wouldnt i be losing oil pressure AND compression??? or am I just totally thinking wrong????? (please correct me)

 

[WORTH]

so if my head gasket is blown and im losing oil, wouldnt i be losing oil pressure AND compression??? or am I just totally thinking wrong????? (please correct me)

You'd be totally thinking wrong , you get oil pressure from the resistance to the oil pump that is caused by the gap in the bearings, the looser the bearings the less oil pressure you will have, providing your oil pump is good.

PS. pull out a motors manual and look at teh oiling diagram for any engine and it will show you where the oil goes. That makes it easier to understand.

 

[xj220]

The thing is, we have no idea about this motor where it's been and what's in it. Sure regular oil changes help, but who knows what the previous owner has done. We'll probably try and get it rebuilt but if it's fubar then we'll go crate.

 

[65fastback2+2]

You'd be totally thinking wrong , you get oil pressure from the resistance to the oil pump that is caused by the gap in the bearings, the looser the bearings the less oil pressure you will have, providing your oil pump is good.

PS. pull out a motors manual and look at teh oiling diagram for any engine and it will show you where the oil goes. That makes it easier to understand.

right, i understand, but is what I said in my last post not possible at all to cause both things????

 

[WORTH]

right, i understand, but is what I said in my last post not possible at all to cause both things????

THERE IS NO (OIL PRESSURE) IN THE HEAD,(f'n caps lock). the rockers get there oil threw the pushrods, so the only oil that can leak from a head gasket is return oil, (no pressure), you can lose compression however.

 

[65fastback2+2]

THERE IS NO (OIL PRESSURE) IN THE HEAD,(f'n caps lock). the rockers get there oil threw the pushrods, so the only oil that can leak from a head gasket is return oil, (no pressure), you can lose compression however.

ohhhh!!! thanks. see i always thought of oil pressure like a circle, that if one part had a hole in it, all pressure dropped, but i see now thats not the case, thanks for helping me learn something

 

[WORTH]

be sure to come back tomorrow when we'll learn how to make the proper Capt. & Coke