1994 OHV 4.0 in 95 ranger? - Ranger-Forums - The Ultimate Ford Ranger Resource


4.0L OHV & SOHC V6 Tech General discussion of 4.0L OHV and SOHC V6 Ford Ranger engines.

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 08-20-2016
Member
Thread Starter
 
Join Date: Sep 2013
Location: St Francois Xavier
Posts: 7
1994 OHV 4.0 in 95 ranger?

I have a 1995 ranger 4.0 OHV 4x4 and the engine is toast(valve disintegrated).
I have found a 1994 4.0 OHV from an explorer. Can I use this motor with all the electronic in my 1995 truck? Truck has plastic manifold and new/old motor has aluminum one.
Reply With Quote
  #2  
Old 08-20-2016
RF Veteran
iTrader: (1)
 
Join Date: Jan 2014
Location: Vancouver, BC
Posts: 5,197
Yes, should be plug and play.

But...........always a but, the 1995 has the IAT(intake air temp) sensor in with the MAF sensor(6 wire MAF) the 1994 had the IAT sensor on the upper intake(4 wire MAF) so that just won't be hooked up, so don't knock your self out looking for the wire for it.

I think all the other plugs are the same but can't say for sure,
i.e. the IAC valves 2 wire plug on the wire should match the new intake's IAC Valve plug in.

Same for fuel injectors, ECT sensor, ECT sender, and TPS(throttle position sensor).
Worse case is you would have to swap the lower and upper intakes with injectors.

1994 probably doesn't have a Cam Position Sensor(CPS) unless it was from California.
Your 1995 will have and need one.
On the 1994 there is a plug in the block that will need to be remove and pulled out, it will have a gear that drives the oil pump via Cam.
And pull out the CPS housing on the 1995, you will see same set up gear and oil pump drive.
The CPS needs to be timed to the new engine when installed.
The bushings in these wear out so you may just want to get a new one.

Google: ford 4.0 camshaft synchronizer

Thats the fancy name for it

You will need to check out the CPS a little more, I did read 1995 CPS won't work on 1994, so you may need to get 1994 CPS
Reply With Quote
  #3  
Old 08-20-2016
Member
Thread Starter
 
Join Date: Sep 2013
Location: St Francois Xavier
Posts: 7
Would it just be easier to user he plastic plenum? I will look into the CPS issue. There is also something screed into the front lower drivers side of the block. It's black plastic(broken on mine). I'll get a pic. Not sure what it is, and isn't on my 1995 engine
Reply With Quote
  #4  
Old 08-20-2016
Member
Thread Starter
 
Join Date: Sep 2013
Location: St Francois Xavier
Posts: 7
1994 OHV 4.0 in 95 ranger?-image.jpeg

That's on the 1995
Reply With Quote
  #5  
Old 08-20-2016
Member
Thread Starter
 
Join Date: Sep 2013
Location: St Francois Xavier
Posts: 7
1994 OHV 4.0 in 95 ranger?-image.jpeg
On 1994 engine
Reply With Quote
  #6  
Old 08-21-2016
RF Veteran
iTrader: (1)
 
Join Date: Jan 2014
Location: Vancouver, BC
Posts: 5,197
The picture for 1995 is of the CPS

The picture of the 1994 shows the oil pressure sender
Seen in this diagram: | Repair Guides | Sending Units | Oil Pressure Sender And Switch | AutoZone.com

Yes, swapping lower and upper intake from 1995 engine to 1994 engine would mean everything would match up, wires and vacuum hoses
Reply With Quote
  #7  
Old 08-21-2016
Member
Thread Starter
 
Join Date: Sep 2013
Location: St Francois Xavier
Posts: 7
Quote:
Originally Posted by RonD View Post
The picture for 1995 is of the CPS

The picture of the 1994 shows the oil pressure sender
Seen in this diagram: | Repair Guides | Sending Units | Oil Pressure Sender And Switch | AutoZone.com

Yes, swapping lower and upper intake from 1995 engine to 1994 engine would mean everything would match up, wires and vacuum hoses
Thanks Ron! I'm sure there will be more to come! The cylinder walls look good on the replacement engine, previous owner said it had 200k on it. Think I should hone and re-ring? Heads look good too, going to disassemble, clean, replace valve seals and lap.
Reply With Quote
  #8  
Old 08-21-2016
Member
 
Join Date: Jul 2016
Location: BC Canada
Posts: 407
I had a machinist tell me that lapping in shouldn't be done because even though the valves fit when they are cold from the procedure, when the engine reaches normal operating temperature, the valves don't seat properly any more, or at least not as well as they should from a proper grinding procedure.

The other problem is that the small bits of carbide in the lapping grease can get embedded in the seat and valve face and no amount of cleaning can get rid of this.
These bits of carbide cause hot spots on the exhaust valve eventually causing pitting and premature failure.

With that said, I've been lapping valves in too and the given engine runs fine, it's just that this something that has always stuck in my head.

Found this, I guess it depends how fussy you are and how deep your pockets are... (the long post and the photo after it)

http://www.pistonheads.com/gassing/topic.asp?t=980840

Last edited by Jeff R 1; 08-21-2016 at 10:32 AM.
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
1994 ford ranger 4.0 ohv irregular misfire Rydogg311 4.0L OHV & SOHC V6 Tech 3 02-27-2013 10:46 AM
Not all aftermarket 4.0 OHV Front Main Seals actually fit the engine (1994 Ranger) thenextdon13 4.0L OHV & SOHC V6 Tech 0 02-24-2013 11:19 PM
1994 4.0 OHV Top end chatter. wvmedic 4.0L OHV & SOHC V6 Tech 1 03-26-2012 09:24 AM
1994 4.0 OHV Problems DasBaldDog 4.0L OHV & SOHC V6 Tech 8 01-10-2011 04:41 PM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -6. The time now is 06:55 AM.