Hey guys, new to the forum.
My car ran like a chugger for a while (still is, but a bit better lol)
Anyway yeah i took it to my local ultratune that does carbon cleaning. They took the injectors to a shop to get them repotted and it worked out to 25 an injector. And the car runs smooth again.
Still got a few problems, but hopefully gonna sort them out with some help from u guys lol. The never ending saga of the magna. This old beast has given me so much ****, probly paying me back for all the **** i give it. But yeah just thought i'd let all of yous know, there is an alternative to sourcing new injectors. And its cheap.

:D

Tell me about it man, my magna I think is on its last legs! Mines the carby model( good ol gen 1 :rant: ) so I'm not too sure about the injectors. However, I was told that 13B injectors are a top mod to do if your going the turbo route, man these cars would go hard with a bit of forced induction :thumbsup: Would anyone know where to start for a turbo conversion like what plugs do I need and stuff :confused: sorry to hijack your thread matic.

Plugs are the least of your worries young fella, youll wanna start looking at stuff like getting a new car! Or Get an EFI engine and get some fuel management. Got a carb, stay N/A, got EFI? Go turbo. Still though, the possibilities of blowing the old astron sky high are quite high, they arent exactly made tough. :rant:
My old magna was carb, I could never even run the aircon while idleing, damn idle up kept dying on me. I skipped out of it and sold it, it was winter so they didnt try the aircon :bowrofl:

Plugs are the least of your worries young fella, youll wanna start looking at stuff like getting a new car! Or Get an EFI engine and get some fuel management. Got a carb, stay N/A, got EFI? Go turbo. Still though, the possibilities of blowing the old astron sky high are quite high, they arent exactly made tough. :rant:
My old magna was carb, I could never even run the aircon while idleing, damn idle up kept dying on me. I skipped out of it and sold it, it was winter so they didnt try the aircon :bowrofl:
Nah. The Astrons are good for forced induction. Long stroke, low static compression, fairly strong internals

Explain to me how long stroke is good for turbo applications.

Its a definite contributer as to how quickly the damn piston rings wear. :rant:

Magnamatic you seem to knwo your stuff, who/how did you bore the throttle body and polish the intake plenum? I think my injectors are in need of a clean/repott. is repotting same as other thread somebody said they had new seals and flow tested?
I got 300km out of 45L of ultimate wooohoo. Sure most km were thrashin km but yeh

Explain to me how long stroke is good for turbo applications.

Its a definite contributer as to how quickly the damn piston rings wear. :rant:

This is taken from an auto speed article:


You can probably get away with turbocharging more on small bore, long stroke engines. With a larger bore, it takes longer to initiate combustion and you need to retard ignition timing under boost. You start wasting a lot of energy when you have to do that type of thing

:D

This is taken from an auto speed article:



:D

If your gonna be turbocharging, and you want to do it right, you'll have invested in a good computer that can do this for you - when you set it up right. Its no biggie, the computer is capable of managing this. I think what theyre trying to say is u can get away with it more if you want to do it dodgy/small budget on a long stroke engine, with a less than acceptable computer / chipped ecu.

Magnamatic you seem to knwo your stuff, who/how did you bore the throttle body and polish the intake plenum? I think my injectors are in need of a clean/repott. is repotting same as other thread somebody said they had new seals and flow tested?
I got 300km out of 45L of ultimate wooohoo. Sure most km were thrashin km but yeh

EDIT - Cant find the pics, they werent all that exciting anyway.

I didnt do the throttle body.

Really guys, the gains werent all that good, but the car did run smoother. I did the intake plenum at the same time as i got the TB bored, so i really cant say what actually made the car run smoother. Probably all the carbon buildup that came out of the intake plenum.

If your gonna be turbocharging, and you want to do it right, you'll have invested in a good computer that can do this for you - when you set it up right. Its no biggie, the computer is capable of managing this. I think what theyre trying to say is u can get away with it more if you want to do it dodgy/small budget on a long stroke engine, with a less than acceptable computer / chipped ecu.


What they are saying is that due to the nature of short stroke/large bore engines, you need some heavy retarding of ingnition timing to make it run right, this in turn reduces the efficiency of the engine. So basically long stroke engines (due to design) are better suited to boosted applications, nothing to do with budget installation :D

So basically long stroke engines (due to design) are better suited to boosted applications, nothing to do with budget installation :D

Oh so this must explain why so many factory turbocharged engine cylinders are square, almost square or undersquare? :nuts:

Back to the injectors, took mine out and got them to clean and put new seals in, put them back in the other day. Much better, no where near as much lumpiness in the idle and also better fuel consumption, tis good!