Questions about my 4AF '89 Carb'd Corolla

[|PuNiSh3R|]

In mid December (2002) I bought an '89 Corolla coupe.

Very nice car, the owner maintaned it pretty good.. perfect interior except for a crack on the dashboard. Anyway I bought it at 99085 on the odometer with a pretty nice audio system for $780.

This car has the optional sun-roof installed which seems to be far and few between on these cars since I am desperately looking for replacement parts.

Anyway, I've been doing work on it recently.. not exactly replacing parts, except I did the sparks (replaced with NGK's), distro cap, rotor, and wires. I've changed the oil just the other day with Castrol 10w40. I've changed the oil.. um.. 2 other times.. so It has a 107K on it now.. I've really driven this car hard. It's my first car.. what do u expect? lol...

I am doing a forced intake on the carb with a 550CFM fan and using 4" thin-wall PVC pipe from the front up to the carb. Yesterday I cleaned the carb out with Valvoline carb and throttle body cleaner. Rev'in the engine steady at 6K while my friend sprayed it out. This worked well.. I noticed at times while he was spraying the peddle was goin insane and the RPM's would go up to 7K by not even pushing the peddle down more.. I had to let off some to stop it from red-lining (at 6,400 I think it is).

The carb is clean as a whistle now.

I am looking to get more power out and I think once I put the fan and the new intake on the carb that should help.. but not do the trick completely. I am not looking to drop major dollars now.. as I don't have major dollars. I am more interested in a reliable sturdy car as of now. I am completely re-wiring the audio system cuz the guy that installed it did a horrible horrible job on the electrical aspect of it.. and even the audio wiring.

I was watching this truck show on TNN today and they put a propane mod on a diesel truck. Basically having propane inject into the air-intake. I was designing with a friend this exact same methode a few months ago. Except my idea used sort of a refrigeration technique to get chilled air in and then putting propane in the mixture as well.

I was just wondering if anyone here could tell me the effects of putting a propane mixture in the air intake on a gasoline car. I am assuming that it will give me a nice boost.. nothing to big though, i'm not hoping for a NOx out-come here. But obviously vapor form propane put under heat, pressure, and then the added spark from the plug will blow just like gas.

My worries, everything is stock still.. I can't put in to much propane in the mixture. I don't want to blow the heads.. camshaft.. etc. So I was going to position a 20lb tank in the trunk.. run the line up and tap it into the PVC pipe intake.. just a few inches from the carb intake.. take it out to a parking lot.. put it in neutral and drop a tiny bit of propane in.. see what happens with the RPM's.. then drive it.. hit the valve open again just for a split second.. see what happens.. I know I can't do to much cuz I don't want to run into knocking.. etc..

I have worked with propane before and I am aware of the safety pre-cautions as well as specs on propane and all that hippy shit.. I used to do refrigeration work and I charged systems with propane as the refrigerant.. works very well.. very comparable to R-22 .

SO any idea's if this will work on a gasoline engine? Also, can anyone give me any performance tips for this car? I am not looking to lower it.. I ain't exactly into the whole dropping the car to the ground mods.. I like my cars beefy and mean.. I ain't looking to do 103489720389493MPH.. just get some more power (HP) out of it.. as well as acceleration.. it can be sluggish now and I really don't know why.. sometimes it takes off.. sometimes it's like.. ugh.. I don't wanna get up ! but then as the RPM's climb it will just take off.. so idk.. I would be willing to take the pistons out and all that shit and clean the engine out and what not..

Thanks bunches for reading this long arse post!

[|PuNiSh3R|]

Anyone??

[Bulldog1657]

Cant help you out there bud...but I thought i would say I have a 89 4AF Corolla (Carberated) Sedan...same cars for the most part.