4 port or 6 port
 

People have asked me what I have. I don't know how to tell. The 1984 GSL-SE has a fuel injected 13B. I have another 13B that I was told came out of a 1988 and it has different markings on the top of the fuel injection system.

How do I tell what is what? I think I know that the 1988 13b will not run on the 1984 GSL-SE ECU

Are they 4 or 6 port? Are the HP ratings different? Where can I find this information?

I wasn't aware of a '84 GSL-LE. I thought that were all '85's. Either way, the GSL-SE is definitely a 6-port motor and assuming the '88 is out of a N/A car it's also a 6-port. All 12A's, early 13B's, and turbo 13B's are 4-port.

GSL-SE was 84-85.

The 88 short block can be modified, and run on the GSL-SE, but there are challenges.

One is that the GSL-SE only used 2 injectors, whereas the S4 uses 4. If all the manifolds bolt up, there shouldn't be too much of an issue, they make injector block offs for the iron injector ports on the S4 block.

Thanks guys

all n/a 13b's from 84-91 were 6 ports.

whoever told you that an 88 n/a engine can't be ran by the se's ecu didn't know what they're talking about. i'm currently running an 87 n/a in my gsl se.you use the 88 engine with the se's wiring and sensors.there's a couple of little more things but,all you have to do to make it work is the following

use the se's distributor
gsl se front cover and oil pan
remove emissions and block off the bac valve
block off the secondary injector ports and run the se's injectors and fpr
use the se's tps and the 88's mounting bracket
you have to use the 88's intake piping with an adapter for the se's air flow meter

I think you missed the point, I want an complete spare engine that I can swap out during an endurance race without exchanging a bunch of parts. The 88 Engine does not have the same wiring harness as the 84.

I'm not sure where the point he missed was made... :o15:

you're not psychic? i already knew he wanted a quick change setup...

since he isn't wants something like that,then he needs to convert the se to a carb and get another se engine that's ported and carbed as well. there's no quick change engine setup when it comes to fuel injection.

You guys are over thinking this. I want a fuel injected 13b that uses the same ECU that is in my GSL-SE. Simple as that. I no longer want to switch to carbs.

simple..

take the 86-88 engine. With the manifolds, there is some interchange, and if i recall, you might be able to swap the GSLSE manfiolds straight onto the car. I need to double check this myself on my own car for a few reasons, but even if they dont. You can have the SE components of the EFI setup onto the spare engine, but the little differences that make it work, can be done ahead of time. The injectors, TPS etc, would still be SE.

So if you can have the motor ready to go.

This thread gives me a headache. If you want fast changes and to stay FI, then either:

A) get a second GSL-SE motor or

B) get two fc motors and convert the car to run those. Bouncing back and forth between two different gen motors and trying to get everything to work right the first try during pit stops sounds like a disaster in the making.

Here's an easier idea..... build ONE engine to handle an endurance race.... it's not that complicated.... it's a freakin n/a rotary.... they last well into the 200,000 mile range

+1 to everything.

you want a drop in replacement for the GSL-SE without the headaches of retrofitting an FC block to the FB chassis? get a second GSL-SE fuel injected engine, simple.

and yes, if you're blowing up n/a engines all that often then you are doing something wrong.

the s4 engine should work on the GSL-SE ECU, problem is making everything bolt up, you'd have to make the block work for all the GSL-SE peripherals, which leads back to the original question as to why you would want to bother doing all that.. you'd need almost half a spare GSL-SE engine anyways. if the issue is you want the additional power from the later model engine you won't be getting it with the GSL-SE components anyways, in which case you would be better off picking up 2 FC engines, a wiring harness, ECU and all the peripherals and making those interchangeable.

if you want real power build a real engine, get a standalone, run ceramic seals and build it once without fucking with spare motors.