2nd Generation Specific (1986-1992) 1986-1992 Discussion including performance modifications and technical support sections.
Sponsored by:

engine compatibilty?

Thread Tools
 
Search this Thread
 
Old 06-02-04, 09:43 AM
  #1  
Junior Member

Thread Starter
 
RX7II's Avatar
 
Join Date: Mar 2004
Location: va
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
engine compatibilty?

Hi I was wondering if the 87 non turbo engine block would fit in the 90 convertible non turbo engine?
Would it be plug and play. I am about to buy a use one soon. Please I do not know much about the rotary.
thanks!
Old 06-02-04, 10:18 AM
  #2  
Engine, Not Motor

iTrader: (1)
 
Aaron Cake's Avatar
 
Join Date: Feb 2001
Location: London, Ontario, Canada
Posts: 29,789
Likes: 0
Received 108 Likes on 91 Posts
Yes. You need to transfer the intake and all electronics from the '90 to the older engine. There will be a few issues (don't expect to pass emissions), but it does work.

Much better to find a matching engine for your car (89-92).
Old 06-02-04, 07:02 PM
  #3  
Junior Member

Thread Starter
 
RX7II's Avatar
 
Join Date: Mar 2004
Location: va
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
Thanks for answer my post.
I was wonder am I loosing any horse power because the older model?
Why wont it pass emissions? Please.........
All I really need is the rear cylinder, I think it blew a seal.
thanks!
Old 06-02-04, 07:13 PM
  #4  
Lives on the Forum

 
WAYNE88N/A's Avatar
 
Join Date: Feb 2004
Location: Coldspring TX
Posts: 5,721
Likes: 0
Received 2 Likes on 2 Posts
if all you blew was the rear oil seal, you can fix that with the engine still in the car (lots of manual labor, but it can be done)...or, are you talking about the rear ROTOR seals?
Old 06-02-04, 08:14 PM
  #5  
Junior Member

Thread Starter
 
RX7II's Avatar
 
Join Date: Mar 2004
Location: va
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
I dont know which seal, all I know is that it has 0 compression in the rear cylinder and 132psi in the front.
thanks!
Old 06-02-04, 08:18 PM
  #6  
Lives on the Forum

 
WAYNE88N/A's Avatar
 
Join Date: Feb 2004
Location: Coldspring TX
Posts: 5,721
Likes: 0
Received 2 Likes on 2 Posts
I'm going to assume you're reading the compression gage right (132 sounds kinda high, and 0 means almost every seal on the rotor is wiped out, which usually doesn't happen barring catastrophy), and if that's the case, it's time for a rebuild, with probably a new rotor housing to boot...
Old 06-02-04, 08:45 PM
  #7  
Junior Member

Thread Starter
 
RX7II's Avatar
 
Join Date: Mar 2004
Location: va
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
That is why I am keep asking every body. It does not making any sense. The way I check the compression (could be wrong) is hooked the gauge up, plug to the spark plug hole and crank for 7 times ++. 132psi is the highest (maybe 130).
I am in the dark on rotary. I hope some nearby can help out. I am locate at Springfield VA. I have a 90 convertible. Maybe I will sell it and get a lesser headache like the supra (got 3, 85s).
Old 06-02-04, 08:51 PM
  #8  
Lives on the Forum

 
WAYNE88N/A's Avatar
 
Join Date: Feb 2004
Location: Coldspring TX
Posts: 5,721
Likes: 0
Received 2 Likes on 2 Posts
First of all, just do an audible compression test- take one plug out at a time, one each housing, and crank her over...listen and feel for the pulses...if you get absolutely nothing out of the rear rotor housing, then you've verified that 0 compression number...(don't forget to pull the EGI fuse before cranking)
Old 06-02-04, 08:56 PM
  #9  
Junior Member

Thread Starter
 
RX7II's Avatar
 
Join Date: Mar 2004
Location: va
Posts: 15
Likes: 0
Received 0 Likes on 0 Posts
(don't forget to pull the EGI fuse before cranking)
Can you help me point to the location please.
thanks!
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
trickster
2nd Generation Specific (1986-1992)
25
07-01-23 04:40 PM
stickmantijuana
Microtech
30
04-23-16 06:37 PM
Wicked93gs
Other Engine Conversions - non V-8
0
08-23-15 10:14 AM



Quick Reply: engine compatibilty?



All times are GMT -5. The time now is 02:49 PM.