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Author Topic: Pinto Motor In A 1948 Willys Jeep  (Read 1356 times)

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Offline Trucker Tim

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Pinto Motor In A 1948 Willys Jeep
« on: August 16, 2014, 07:04:41 PM »
Hello Folks.
I need some help. I bought a 1948 Willys Jeep and was told it has a Ford Pinto motor. I believe it to be true. The Jeep has sat for years but I got it home and charged a battery, removed the starter and got it working and reinstalled it. The motor will turn over but if you watch in the inspection hole on the from cover it looks like the timing belt must be broken? It does not move. If the belt broke when the motor was running what might be broke inside the engine? How do I find out what year and model motor I have? I'm a fair hand at turning wrenches but a long way for being a good mechanic. I'd be glad to send any info or picture anyone might want or need that could help. Thank you in advance, Tim. 
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Offline jburt

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Re: Pinto Motor In A 1948 Willys Jeep
« Reply #1 on: August 16, 2014, 07:41:49 PM »
Welcome Tim
I'm going to assume you have an. OHC inline 4.
It is my understanding that a stock engine has enough clearance to not damage the valves or piston. But... any modifications to the engine and all bets are off.

If it were me, I would pull the valve cover and turn the cam manually to check each cylinder for damage. Turn the cam so both valves on each cylinder are closed, remove the spark plug. Use compressed air in the spark plug hole to hear if there is any valve or piston damage. You will hear the air blow by immediately if there is damage.

If the cam locks up while turning, you definitely have a problem.
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Offline Trucker Tim

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Re: Pinto Motor In A 1948 Willys Jeep
« Reply #2 on: August 16, 2014, 09:21:23 PM »
Thank You jburt.
I will give that a try. I do believe it's a stock OHC 4 cyl but not 100% sure. I'll try your suggestion very soon. Really didn't need another project but what the heck, we only live once right?
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Offline Pinto5.0

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Re: Pinto Motor In A 1948 Willys Jeep
« Reply #3 on: August 16, 2014, 11:01:33 PM »
That's a 2.3 engine. It doesn't necessarily mean it came from a Pinto though since they came in a lot of other Fords. Most of the info you need can be found here to get it on the road.
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Offline amc49

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Re: Pinto Motor In A 1948 Willys Jeep
« Reply #4 on: August 17, 2014, 01:07:56 AM »
X2, 2.3 there.
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Offline Trucker Tim

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Re: Pinto Motor In A 1948 Willys Jeep
« Reply #5 on: August 17, 2014, 06:35:46 AM »
Thank You All for the help so far!!
  You-all probably don't have this problem but I always seem to have a billion projects going at any given time and all about half finished.
  I work a weird schedule so sometimes it might take me a week to reply, sometimes a very short time. When I'm on the road I don't have internet or email.
  I think we're going to drag the vehicle to the car-wash this morning and blow off some of the dirt and mud accumulated over the years and start with a bit cleaner project. Truckdrivers ain't supposed to get dirty ya know!!  :)
  I'll include another shot of the motor just for kicks and again, Thank You for all the help!
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Offline Trucker Tim

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Re: Pinto Motor In A 1948 Willys Jeep
« Reply #6 on: August 18, 2014, 07:47:28 PM »
Hey Crew.
  I got all the fluids changed in the gear boxes today but didn't get into the motor yet. I did hook up the battery and cranked it over again just to make sure it would still spin.
  I'm leaving for my week on the road Wednesday morning early so tomorrow I'll take it easy and get my bags packed. I'm out 7 days at a time. (cool thing is when I get home I'm off for 7 days)
  When I get home in a week pulling the valve cover and trying to spin the cam by hand will be job #1. My Buddy said he has the fittings and regulator to screw into the spark plug holes to hook an air hose up and see if it's builds pressure.
  Look forward to talking to all of you Guys next week. Thanks Again. 
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Offline 65ShelbyClone

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Re: Pinto Motor In A 1948 Willys Jeep
« Reply #7 on: August 18, 2014, 08:13:47 PM »
You should be able to see the back of the cam sprocket between the belt cover and the valve cover. If it doesn't spin when the engine is cranked, then the belt is broken or not engaging the sprockets, but far more likely to be broken.

I know the turbo 2.3s are non-interference engines so broken cam belts are merely an annoyance. I seem to recall that the 2.3NA is the same.
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Offline amc49

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Re: Pinto Motor In A 1948 Willys Jeep
« Reply #8 on: August 19, 2014, 04:14:26 AM »
Yes unless someone has been slabbing the head/block or nonstock cam........... ...
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Offline Trucker Tim

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Re: Pinto Motor In A 1948 Willys Jeep
« Reply #9 on: August 19, 2014, 05:44:12 AM »
  Going to stop by our local NAPA dealer today which is located at the Ford Dealership to get the cost and availability on the timing belt.
  When I get home next week I'll try jburt's plan first!

("If it were me, I would pull the valve cover and turn the cam manually to check each cylinder for damage. Turn the cam so both valves on each cylinder are closed, remove the spark plug. Use compressed air in the spark plug hole to hear if there is any valve or piston damage. You will hear the air blow by immediately if there is damage".)

  Also, yesterday we received a shipment of parts for our M-37! Too many projects, not enough time and $$$$$$$$$.  Gotta' get gone! Thanks Guys.

 
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Offline 65ShelbyClone

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Re: Pinto Motor In A 1948 Willys Jeep
« Reply #10 on: August 19, 2014, 10:09:31 AM »
Be prepared to also get a timing belt tensioner if the old one is dry, loose, or rough. The timing belt alone should be about $10. FYI: there are belts with square teeth and ones with round teeth. AFAIK, the round ones came into production sometime around '87, so yours should have square teeth.

If you won't get back to the project for a week, I would go shopping on Rock Auto. I almost always save money even after paying for shipping. Chain stores don't stock anything anyway, so I might as well save a bunch of money if I have to special order everything. Last week I stocked up on 8in rear end soft parts because they were a fraction of the chain store price and none of the chain stores here carry them anymore. I also got some sightly defective Napa (Precision) combo u-joints from Rock for half Napa's price. Better that I paid $8/ea for junk than $15, right? [/mini rant]
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Offline Trucker Tim

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Re: Pinto Motor In A 1948 Willys Jeep
« Reply #11 on: August 19, 2014, 01:54:42 PM »
I will try and look into this but time is running out. Need to get packing for a week gone?
Thank You.
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Offline Trucker Tim

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Re: Pinto Motor In A 1948 Willys Jeep
« Reply #12 on: August 28, 2014, 06:57:36 AM »
Hey Crew.
  Well, I arrived home yesterday from a week on the road in a Freightliner that rides like a buckboard. I messed around yesterday with the Pinto Motor and the old Jeep. Drained all the gear boxes, oil from the motor and refilled everything with #2 diesel fuel. I don't remember if I mentioned this vehicle has been in a flood. Totally submerged.  :'(
  Anyway, after following jbert's direction today I'll install a new timing belt & idler. Still not trying to get her running just trying to get the blood flowing thru her vein's!
  I'll be home for a week and keep you posted. 10-4   
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