Front cover swap
10-30-08, 06:58 AM
#1
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Front cover swap
I have searched many times and I keep finding diffrent answers. I Have a 89 13b 6 port. I want to know if I could fit a 12a front cover onto it for an engine swap. Please answer only if you have first hand knowledge on this.(no, hear say/charlatans) 
Thanks, in advance.
10-30-08, 07:30 AM
#2
A 12A cover will fit. You will also need a GSL-SE oil pan and 12A/GSL-SE oil pickup tube. The GSL-SE front cover would work better as you could use a S4 or GSL-SE OMP..but you would have to rig up something for the connecting rod as the S5s don't have a spot on the throttle body for the rod. Neither front cover (12A or GSL-SE) will work with the stock S5 OMP without a fair amount of modification.
The details depend on what exactly you want to do (what ECU you will run (if keeping EFI), and such).
If going aftermarket ECU, I would do the following:
- GSL-SE front cover, oil pan, pickup tube
- S4 or GSL-SE OMP
- S4 throttle body (has spot for OMP rod)
- GSL-SE crossmember (or RB mount, or modify the stock setup). This assumes you have a 12A car
If using the S5 ECU, basically do as above, but the OMP gets a bit tricky. The S4 TB has the spot for the OMP rod, but isn't setup directly for the S5 TPS. You'll have to rig something or premix. Plug in the S5 OMP and tie it out of the way (so ECU doesn't go into 'limp' mode). The other possibility is to modify the front cover and use the S5 OMP.
Lots of options. Just depends on what you are trying to do.
The details depend on what exactly you want to do (what ECU you will run (if keeping EFI), and such).
If going aftermarket ECU, I would do the following:
- GSL-SE front cover, oil pan, pickup tube
- S4 or GSL-SE OMP
- S4 throttle body (has spot for OMP rod)
- GSL-SE crossmember (or RB mount, or modify the stock setup). This assumes you have a 12A car
If using the S5 ECU, basically do as above, but the OMP gets a bit tricky. The S4 TB has the spot for the OMP rod, but isn't setup directly for the S5 TPS. You'll have to rig something or premix. Plug in the S5 OMP and tie it out of the way (so ECU doesn't go into 'limp' mode). The other possibility is to modify the front cover and use the S5 OMP.
Lots of options. Just depends on what you are trying to do.
10-30-08, 07:39 AM
#3
Yeah, a few more details would help, if you plan to run the stock ECU, as gsl-se addict says you will have to deal with the electronic omp. A few people on here successfully modded the FB front cover to work with the omp (myself included, although I later went with a different setup) so it can be done. Really depends which direction you want to go with the project. Good luck!
10-30-08, 09:20 AM
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Thanks for the detailed answers.
I am swaping the motor into a corolla (I posted here because 1st gen guys know whats up, when it comes to retrofitting FC motors). I am planing to use carbs, as well as premix. I am also not going to bother with a/c p/s. Is the oil pan for differing bolt pattern or is it the shape? I am assuming the oil pickup is to clear the pan? Trans will be a w58, and ignition will be dizzy fired by 2nd gen stuff. This seems to be the only thing left. So, other than the omp, there is no difference between the front covers of the gsl-se and the 12a? Let me know if I have over looked anything, or if there is any more info that would help.
I am swaping the motor into a corolla (I posted here because 1st gen guys know whats up, when it comes to retrofitting FC motors). I am planing to use carbs, as well as premix. I am also not going to bother with a/c p/s. Is the oil pan for differing bolt pattern or is it the shape? I am assuming the oil pickup is to clear the pan? Trans will be a w58, and ignition will be dizzy fired by 2nd gen stuff. This seems to be the only thing left. So, other than the omp, there is no difference between the front covers of the gsl-se and the 12a? Let me know if I have over looked anything, or if there is any more info that would help.
Last edited by Monkeypainter808; 10-30-08 at 09:25 AM.
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10-30-08, 03:41 PM
#12
Premixing is just like what you would do with a weedwacker, chainsaw, or other small 2-cycle engine..you mix some oil in your gas tank.
Typically, people will run about 1 oz of oil (normally a 2 cycle oil) per 1 gallon of gas. The oil (from the OMP or the premix) is there to lube the apex seals. Premixing is actually better as it gives a more even lubrication of the seals. However, it is a bit of a pain to keep the bottles of 2 stoke oil around and measure it out each time you get gas (not to mention wondering if you remembered to add the oil after you got gas). Also, people will give you weird looks when they see you putting oil in your gas tank.
Typically, people will run about 1 oz of oil (normally a 2 cycle oil) per 1 gallon of gas. The oil (from the OMP or the premix) is there to lube the apex seals. Premixing is actually better as it gives a more even lubrication of the seals. However, it is a bit of a pain to keep the bottles of 2 stoke oil around and measure it out each time you get gas (not to mention wondering if you remembered to add the oil after you got gas). Also, people will give you weird looks when they see you putting oil in your gas tank.
11-03-08, 01:12 PM
#14
35r 13b first gen
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Premixing is just like what you would do with a weedwacker, chainsaw, or other small 2-cycle engine..you mix some oil in your gas tank.
Typically, people will run about 1 oz of oil (normally a 2 cycle oil) per 1 gallon of gas. The oil (from the OMP or the premix) is there to lube the apex seals. Premixing is actually better as it gives a more even lubrication of the seals. However, it is a bit of a pain to keep the bottles of 2 stoke oil around and measure it out each time you get gas (not to mention wondering if you remembered to add the oil after you got gas). Also, people will give you weird looks when they see you putting oil in your gas tank.
Typically, people will run about 1 oz of oil (normally a 2 cycle oil) per 1 gallon of gas. The oil (from the OMP or the premix) is there to lube the apex seals. Premixing is actually better as it gives a more even lubrication of the seals. However, it is a bit of a pain to keep the bottles of 2 stoke oil around and measure it out each time you get gas (not to mention wondering if you remembered to add the oil after you got gas). Also, people will give you weird looks when they see you putting oil in your gas tank.
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