1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

12A Pulse Check....

Thread Tools
 
Search this Thread
 
Old 09-03-05, 08:19 PM
  #1  
Senior Member

Thread Starter
 
SCCAIT7's Avatar
 
Join Date: Jul 2005
Location: Atlanta
Posts: 525
Likes: 0
Received 0 Likes on 0 Posts
12A Pulse Check....

Hello- Well I went to the junk yard today and found a 12A that had some fresh paint on the front cover and looked really clean... I pulled the engine out and there is a new clutch on the back of the engine... She looks like a recent rebuild...

I have the engine and transmission at home and I am trying to check for life... The engine will spin over and seems to be making nice compression..."blowing hard".... However when I put the compression guage on it...it does not develop any compression.... When you put the plugs in the engine...it go's "thump" "thump"...Sounds like it has compression..............


The questions!!

1.) Is there a good way to truely get 12V to the starter through a jumper cable set up...so I know that the engine is spining over fast enough...

2.) Where can I check for oil pressure? Is there a place to put a mechanical guage in?
Old 09-04-05, 01:50 AM
  #2  
RX for fun

iTrader: (13)
 
Siraniko's Avatar
 
Join Date: Aug 2001
Location: Socal
Posts: 15,926
Likes: 0
Received 22 Likes on 19 Posts
You need to install a bell housing in the motor. If you cant find the earlier ones, the pre-RX-7, grab a bad RX-7 tranny and cut the bell housing area (or use a good tranny). This will allow you to install a starter and wire you would normally do. For oil pressure, either on the stock location OR in the rear banjo bolt.
Old 09-04-05, 08:50 AM
  #3  
Senior Member

Thread Starter
 
SCCAIT7's Avatar
 
Join Date: Jul 2005
Location: Atlanta
Posts: 525
Likes: 0
Received 0 Likes on 0 Posts
I have the tranny bolted up. Where is the stock location or the banjo bolt or oil pressure?
Old 09-04-05, 09:13 AM
  #4  
Senior Member

 
ChasRX's Avatar
 
Join Date: Mar 2004
Location: Coastal
Posts: 589
Received 3 Likes on 1 Post
Banjo bolts are down low on the dip-stick side of the block. Banjo bolts connect the oil cooler line.

Old 09-04-05, 10:02 AM
  #5  
Burning Oil-Grinding 3rd

 
Hades12's Avatar
 
Join Date: Apr 2002
Location: Union Mills NC
Posts: 4,094
Likes: 0
Received 1 Like on 1 Post
you could pull the Manifold and take a look at all of the seals.
Old 09-04-05, 10:18 AM
  #6  
Senior Member

Thread Starter
 
SCCAIT7's Avatar
 
Join Date: Jul 2005
Location: Atlanta
Posts: 525
Likes: 0
Received 0 Likes on 0 Posts
the engine has 155-160 pounds of compression...All are even. Thats enough to sustain life right? Next task is to check for oil pressure.... The girlfriend just got here from out of town...so the process is on hold! Any other sugestions as for stuff to look for...?
Old 09-04-05, 10:38 AM
  #7  
Burning Oil-Grinding 3rd

 
Hades12's Avatar
 
Join Date: Apr 2002
Location: Union Mills NC
Posts: 4,094
Likes: 0
Received 1 Like on 1 Post
what yard did you pull it from? How much trouble was it to get out at the site and what was the cost. If you dont mind.

thanks
Old 09-04-05, 10:56 AM
  #8  
Senior Member

Thread Starter
 
SCCAIT7's Avatar
 
Join Date: Jul 2005
Location: Atlanta
Posts: 525
Likes: 0
Received 0 Likes on 0 Posts
It was a junk yard in Holly Springs... 150 bucks. 30 minutes and she was on the ground.... Those engines are EASY! If you need help pulling one...let me know!~ 6 pack of beer and we will call it even!
Old 09-04-05, 01:28 PM
  #9  
Burning Oil-Grinding 3rd

 
Hades12's Avatar
 
Join Date: Apr 2002
Location: Union Mills NC
Posts: 4,094
Likes: 0
Received 1 Like on 1 Post
Holly Springs: what is the name of the yard. did they have a hoist?

I go to the pull a parts but they will not let a jack into the yard and want to charge extra for any bits attached to the engine. I have pulled 3 so far and put one in. Last pull I was down to about 2 hours from a running car to the engine on the truck.
Old 09-04-05, 04:38 PM
  #10  
Senior Member

Thread Starter
 
SCCAIT7's Avatar
 
Join Date: Jul 2005
Location: Atlanta
Posts: 525
Likes: 0
Received 0 Likes on 0 Posts
Sir- My Dad posted the last post.... It was the pullapart over in Norcross that we got the engine. My Dad thought we got the engine in Holly springs~! Sorry! Pullapart sells the WHOLE engine...including altinator,starter,carburator for 150 dollars. We used a drive shaft out of a lincon to lift the engine out...

www.pullapart.com If you go on that link it will show you prices. a 4cyl engine is 107 dollars plus $20 dollar core charge. plus tax tag and title.... 150 out the door.
Old 09-04-05, 06:16 PM
  #11  
Burning Oil-Grinding 3rd

 
Hades12's Avatar
 
Join Date: Apr 2002
Location: Union Mills NC
Posts: 4,094
Likes: 0
Received 1 Like on 1 Post
Got it. I go to that one and the one by the airport. but it is just me and my wife so I have never tried to get one.

If you go to the one at the airport the cars are much closer to the entrance, where at norcross you have to walk all the way to the back.
Old 09-04-05, 10:32 PM
  #12  
Senior Member

Thread Starter
 
SCCAIT7's Avatar
 
Join Date: Jul 2005
Location: Atlanta
Posts: 525
Likes: 0
Received 0 Likes on 0 Posts
Well- If you ever need help... my email is Hproduction38@aol.com. Give me a couple days notice...and ill meet you there and we will git er dun!!!
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
dona1326cosprings7
1st Generation Specific (1979-1985)
4
10-29-15 06:47 AM
rx7inoregon
Old School and Other Rotary
5
10-01-15 12:44 PM



Quick Reply: 12A Pulse Check....



All times are GMT -5. The time now is 04:48 AM.