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

motor disassembled, dreams crushed

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Old 09-22-09, 09:47 PM
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so we all agree that i use the 90's motor with se parts and ecu?
Old 09-22-09, 09:55 PM
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[QUOTE=74RX4;9511110] Post a WTB thread in the classifieds when you decide what you need.

Sounds like the the best choice to me, I just sold an SE rotor housing a couple weeks ago.
I have the plates, but they would probably need lapping. I'm sure someone has what you need.

Also, IMHO if the the 90 motor is good I wouldn't tear it down, unless it's got 150,000+ miles on it. If you can't find the SE parts right away, you could spend a couple hundred on parts to drop the 90 in the SE (oilpan, front cover, ecu, ect.). There's plenty of documentation on the swap here on the forum.
Old 09-22-09, 10:43 PM
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Originally Posted by gsl-se addict
Sorry to hear. You are pretty much out of luck with parts from the '90. Starting with the 2nd gens, Mazda moved the coolant o-rings from the rotor housings to the irons.
And then they moved them back on the Renesis:



iron:

Old 09-22-09, 10:46 PM
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[QUOTE=Stevan;9514439]
Originally Posted by 74RX4
Post a WTB thread in the classifieds when you decide what you need.

Sounds like the the best choice to me, I just sold an SE rotor housing a couple weeks ago.
I have the plates, but they would probably need lapping. I'm sure someone has what you need.

Also, IMHO if the the 90 motor is good I wouldn't tear it down, unless it's got 150,000+ miles on it. If you can't find the SE parts right away, you could spend a couple hundred on parts to drop the 90 in the SE (oilpan, front cover, ecu, ect.). There's plenty of documentation on the swap here on the forum.
The 1990 motor is a better piece that the SE engine. You pickup compression 9.7:1 vs 8.5:1 and the rotors are lighter. I would use the later engine and sell/return the SE rebuild kit.
Old 09-23-09, 01:49 AM
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[QUOTE=mustanghammer;
The 1990 motor is a better piece that the SE engine. You pickup compression 9.7:1 vs 8.5:1 and the rotors are lighter. I would use the later engine and sell/return the SE rebuild kit.[/QUOTE]

If he can return the kit, that would be my choice also. Selling it to us cheapskates on here would be a loss. Plus the miles on the 90 engine are also a factor.
Old 09-23-09, 10:25 AM
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about 110k on the 90 motors body, supposedly motor was rebuilt sometime
Old 09-24-09, 02:25 AM
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okay guys ive been searching and have come up short. can anyone tell me what exactly i need to do to get my 90 motor in my gsl se? i know i want to use front cover and oil pan. can i retain my intake off of the gsl se? and water pump ect..? not for air flow reasons just the fact that i need to drive my car, i got new suspension under it and want to take her for a beat run.
Old 09-24-09, 11:44 PM
  #33  
wheres the water goin?

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just move the gslse front cover and oil pan over to the 90 engine. that is all that is needed to drop the engine in the car. sense the S5 engine has the little exhaust port that flows threw the emissions on the lower intake mani you should be able to just bolt the SE lower to the engine. you can throw the SE injectors and fuel on with out a problem everything should go on with out a hitch. i would just throw the SE intake mani on there to test fit it. yeah but all you really need to put it in the car is the oil pan and the front cover!


water pump: i believe that you need to get a 2nd gen pump and housing, which you can get the water pump housing from a local junk yard for under 20 and just go and buy a NEW pump for around 35 and your all set. unless these are already on your s5 motor.
Old 09-24-09, 11:56 PM
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I have all the parts you need to get your gsl-se engine back together, PM with a full list of what you still need.
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