info on injectors - Page 3

WhiteFox · Sep 23rd, 2002, 12:56 AM

This has got me thinking as well. Enough to make me rip apart my (broken/spareparts) e16i to learn a few things first hand. After getting down to seperating the TB from the manifold, I was going to assess how difficult it would be to widen the hole, but found something much better; the hole is already 51mm wide. The only thing that makes the opening smaller is the mixture heater. Couldn't the engine live without that? A gasket could easily seal it, and problem would be solved. [edit: The four bolts would be too long, so instead of leaving it out, bore the MixHeater out a little, and leave it unplugged]

(I'm still a n00b when it comes to the fuel/intake portions)

I would most definatly love to try the swap for myself, but I need to know what kind of drawbacks leaving the heater out would be.
(as long as they aren't -too- bad, I'd be willing)

Crazy-Mart · Sep 23rd, 2002, 07:44 AM

i dont think the engine will work well without the mixture heater... because of the TBI... engine flood can be a problem... if you cant provide much vapor, your engine will go lean...

is there a mixture heater on the GA16i TBI ???... wath size it is ???... probably would enter the manifold.. the thing is that youll have to port match tbi/intake.... (pretty sure there the same anyway)

blownb310 · Sep 23rd, 2002, 08:18 AM

Hey Guys, great to hear someone is getting ready to bolt on the "big" TBI setup. I forgot about the fact that the mixture heater sits in the hole in the intake, and that the hole in the intake is actually larger. For those that don't know this, the mixture heater is turned on by the ECU, and it only works for a short duration on a cold start. I can get a manual out and look it up, but I think it's like about 30 seconds or less. I would say unless you were in the dead of winter, you'll not need it. I would get an extra one from the junkyard, [you don't want to buy a mixture heater new-trust me!] and hollow it out to make a spacer. Try it, you can always put back the original one later.

Oh, and yes Marty, the GA16i has a mixture heater too. You could probably use it, but then you'd have to enlarge the intake hole to fit it. Me, I'd rather not have the restriction if I could get away without it!

RiceBox · Sep 23rd, 2002, 12:55 PM

Just checked. The mixture heater is only on when the engine is cold. It improves cold engine operation, but turns off once the engine is warm. Guess we northerners would need it for the winter but in the summer we could probably get away without it.

blownb310 · Sep 29th, 2002, 08:20 PM

I was looking at my GA16i engine sitting on the floor today, and thought of you guys. There it is, the "big" injector setup for you E16i guys. I'll never use it. It is in perfect working order, and is complete, with air mass meter, throttle sensor, injector, solenoids, etc. etc. I'll even include the mixture heater as well. If you want buy it cheap, send me a PM. I can't wait to see how much of a difference it makes. I want one of you guys to lead the way of bettering the E16i's power, and still have the factory reliability!

RiceBox · Sep 30th, 2002, 11:11 AM

This is going to require a ECU swap and I HATE electronics, would be nice to try though.

blownb310 · Sep 30th, 2002, 09:17 PM

Quote:

Originally posted by RiceBox
This is going to require a ECU swap and I HATE electronics, would be nice to try though.

*****What makes you think it will require an ECU swap? Both are a single point throttle body injection. The only elctronic part that doesn't match is the airmass meter, and like I said earlier in this thread, just swap in the original one from the E16i. It screws right in, [two #2 phillips head screws].

RiceBox · Oct 1st, 2002, 08:42 PM

Just checked the Haynes manual and it does seem that the ECUs are the same. This is getting more and more tempting.

sentrastud · Oct 1st, 2002, 10:55 PM

Ricebox, i say you should go for it man. Just think of the AutoX and rally benefiets....

-Nick

RiceBox · Oct 2nd, 2002, 08:53 PM

I'm really lacking in time right now. I'm going to school 13.5 hours/week and working 18 hours/week

WhiteFox · Oct 8th, 2002, 01:06 AM

What about gaskets? Would gaskets from a ga16 fit onto the e16 intake? (I believe it should, but asking if anyone knows none the less) And if not, how difficult would it be to make a custom one? I have no experience in gasket creation, nor have I bought any prefab ones.
Also, where would either be available from? Cost?
Sorry for asking such a general question, but I figgure it fits.

RiceBox · Oct 8th, 2002, 08:45 PM

No the intake manifolds are different, so they are not interchangable.

Crazy-Mart · Oct 9th, 2002, 11:49 AM

it time to use that "make a gasket stuff" red one !!

just sit it on it... the original gasket its a piece of carton like material... if you arent using the mixture heater make sur you have some sort of spacer there !! or chop those bolts a bit !!

WhiteFox · Oct 21st, 2002, 02:47 AM

A quite intresting thing I've found:

The mixture heater from the e16 and ga16 are both the same size in outside diameter, and both fit into the manifold (the inner diameter is matched to their respecting tb's). The e16 mix heater sits deeper down than the ga16, however. With the slightly more shallow design, the ga16 heater (and tb combo) would actually restrict MORE air/fuel than using the normal e16 tb and mixture heater. (No numbers, figures, or anything, but visually there's a larger passage for the a/f mix to travel through with the e16's heater)

Not a setback or anything, but with a bit of grinding to the manifold, I believe the ga16 mixture heater CAN be used as is intended.

Personally, I am going with chopping the bolts, as I just don't have the time to remove the entire intake to grind it.

Maybe I'll save that for a project for next year. Maybe not..

RiceBox · Oct 21st, 2002, 11:28 AM

You probably don't even really need the mixture heater. Then there would be NO restriction.