S4 To S5
#1
Okay, i have an 88 GXL. I was woundering is a S5 N/A engine would work in it. Would the S4 wire harness and ECU work or would those need to be changed. If everything just went together, how do you think it would run. I am planning on having the engine ported. Would getting a piggy back unit or a Stand alone be my best option.
Thanks for any feed back or Ideas.
Thanks for any feed back or Ideas.
#5
Originally Posted by cabe' date='Mar 2 2003, 05:17 PM
How is a stand alone so much better than a piggyback? I can imagine that a unit by itself would be better than a piggy back, but is the standalone that much better?
#6
sounds good. so all i would need to do is change the S4 injectors over and change the OMP. I thought that the S5 had an electronic OMP. I would like to go with a standalone. (i want to tune it for optimum power )
which unit would anyone recommend for the stand alone.
thanks for the feed back.
which unit would anyone recommend for the stand alone.
thanks for the feed back.
#7
You don't even need to change the injectors really, at least not to my knowledge
The impedance will vary but that can even happen within S4 swaps (87.5 is the split for the impedance change) you can just remove the resistors to run the high impedance injectors, if you have low.
I built a S5 motor for my S4 and it runs with the S4 ECU, I even used the S4 intake manifold, just required some fabrication/modifications to make it work perfectly. I also ended up with high impedance injectors because I bought 1revvin7's old injectors from his 88GTU... mine had low impedance, cut out the resistors and it's fine.
proof it runs:
http://pengaru.com/~swivel/cars/rx-7/movie...or/mvi_2363.avi
oh, and I disabled the metering oil pump.. and run premix. You could just get a S4 front cover and install it on the S5, I'm using a S4 front cover.
The S4 front cover will allow you to run the mechanical metering oil pump... if you use the S4 intake it will be easy to reuse the actuator rod etc... unless you have no problems wiht premixing then you should go that route.
The impedance will vary but that can even happen within S4 swaps (87.5 is the split for the impedance change) you can just remove the resistors to run the high impedance injectors, if you have low.
I built a S5 motor for my S4 and it runs with the S4 ECU, I even used the S4 intake manifold, just required some fabrication/modifications to make it work perfectly. I also ended up with high impedance injectors because I bought 1revvin7's old injectors from his 88GTU... mine had low impedance, cut out the resistors and it's fine.
proof it runs:
http://pengaru.com/~swivel/cars/rx-7/movie...or/mvi_2363.avi
oh, and I disabled the metering oil pump.. and run premix. You could just get a S4 front cover and install it on the S5, I'm using a S4 front cover.
The S4 front cover will allow you to run the mechanical metering oil pump... if you use the S4 intake it will be easy to reuse the actuator rod etc... unless you have no problems wiht premixing then you should go that route.
#8
Originally Posted by pengaru' date='Mar 3 2003, 05:19 AM
You don't even need to change the injectors really, at least not to my knowledge
The impedance will vary but that can even happen within S4 swaps (87.5 is the split for the impedance change) you can just remove the resistors to run the high impedance injectors, if you have low.
The impedance will vary but that can even happen within S4 swaps (87.5 is the split for the impedance change) you can just remove the resistors to run the high impedance injectors, if you have low.
#9
Originally Posted by turborotor' date='Mar 3 2003, 04:45 PM
[quote name='pengaru' date='Mar 3 2003, 05:19 AM'] You don't even need to change the injectors really, at least not to my knowledge
The impedance will vary but that can even happen within S4 swaps (87.5 is the split for the impedance change) you can just remove the resistors to run the high impedance injectors, if you have low.
The impedance will vary but that can even happen within S4 swaps (87.5 is the split for the impedance change) you can just remove the resistors to run the high impedance injectors, if you have low.
cool, learn something new every day
thanks for the clarification.