Replacing engine in my Sunfire. Its an LD9 and I'm looking for the best car/year/options to look for to drop in. mine is a 97 5 speed. Its been awhile but i have heard the 2000+ 2.4Ls are better. Whats do you guys say?
idk all pretty much the same...kinda
I have a 98, it runs good, I read somewhere where a couple guys said their newer LD was snappier, and then there were the ones who said their old LD was...so who really knows, what are your goals?
Well just at the moment its a straight drop in with the best performance. Im gonna use my old engine to build.
GM claims the 99.5+ had slightly higher compression. The head was also slightly different in how they flowed.
They are basically the same you probably won't notice a difference unless your car had a lot of miles and the newer one had less.
"Oil Leak ? What oil Leak ? Oh, Thats Just The Sweat From All The HorsePower!!"
Keep the 1996-1998 motors if you have emissions testing. Those years have egr valves and using a 1999-2002 will pop a code. You could delete the egr crap with hp tuners OR make an egr bypass. (I know nothing about it, but heard of it) All 2.4 Ld9's are the same bottom end. The later years did have a different compression, but nothing too crazy. The head is also different, but that is because of the egr being deleted.
Okay the input is really helpful. thanks
Freelancer1988 wrote:Keep the 1996-1998 motors if you have emissions testing. Those years have egr valves and using a 1999-2002 will pop a code. You could delete the egr crap with hp tuners OR make an egr bypass. (I know nothing about it, but heard of it) All 2.4 Ld9's are the same bottom end. The later years did have a different compression, but nothing too crazy. The head is also different, but that is because of the egr being deleted.
********EXCEPT********
The knock sensor is different. To use a 2000 block with 97 wiring and 97 PCM, you will need to bore out the knock sensor hole in the block and install the bigger knock sensor that your 97 has.
All LD9's from 96-2001 can run EGR. They have the ports to do so. 00+ has a different exhaust manifold gasket that blocks the exhaust from entering the head.
So with that you can use a 00+ which does have slightlyhigher compression piston's (no dish). You will need to drill and tap the knock sensor hole to use the knock sensor from your current motor (not a big deal to do). You will also use the intake manifold, injectors, exhaust manifold from your car, as well as your ECU, and engine harness. I have done this swap a few times works out nice.
Usually it is easier to find a good running LD9 from a 2000+ GM car. Jbody's, NBody's.
FU Tuning
SO the engine I picked up is out of a 2000 Sunfire. All I need to do is drill out the knock sensor and use that...also where exactly is the knock sensor? And if I read right I got the better engine to make the swap?
its on the back of the block towards the drivers side.
Okay and who knows what size to drill it out and tap it to?
Also this engine does have egr hookups. I believe this head is from an earlier model cause it has been rebuilt from the looks of it. How do I know if the block is the later model?
I'm curious because I'm in the same boat as the op. So how do you do the conversion?
Do I have to run knock sensor? I don't care if the light comes on
-Z Yaaaa- wrote:uh.. yeah lol its sort of important to engine control. i mean it WILL run that way but in limp mode and that = no powa!
Brad our cars do not have limp mode
FU Tuning
Limp mode=fail. So about the conversion. Anyone have a lil step by step?
Hahahaha well all my hard work and sleepless night went to nothing last night. Went to start up for the first time and it would only fire on like 2 cylinders but it wouldn't run. Then smoke started coming out of the distick tube and so I took the fill cap off...needless to say it looked like I was a train the way it was puffing smoke out of tbhere
i recently did the swap the other way. my wiring harness was for the newer sensor. but the block was the larger hole older sensor. so i cut the threaded part of the sensor off drilled and tapped it for the newer one . works great no codes
-Z Yaaaa- wrote:Addicted to meth wrote:-Z Yaaaa- wrote:uh.. yeah lol its sort of important to engine control. i mean it WILL run that way but in limp mode and that = no powa!
Brad our cars do not have limp mode
well wtf i swear ive heard people say this around here....
Brad you are right people have said that. I even said it one time back in the day. This was before tuning and us knowing how the ECU really worked on our cars.
What we know now is what we would have called limp mode is actually the car running off the tune. If a sensor goes bad etc... the ECU defaults to the hard tune in the ECU.
FU Tuning
Addicted to meth wrote:-Z Yaaaa- wrote:Addicted to meth wrote:-Z Yaaaa- wrote:uh.. yeah lol its sort of important to engine control. i mean it WILL run that way but in limp mode and that = no powa!
Brad our cars do not have limp mode
well wtf i swear ive heard people say this around here....
Brad you are right people have said that. I even said it one time back in the day. This was before tuning and us knowing how the ECU really worked on our cars.
What we know now is what we would have called limp mode is actually the car running off the tune. If a sensor goes bad etc... the ECU defaults to the hard tune in the ECU.
Which sensors cause the PCM revert back to the hard tune?
Mystic02VA (GME Chat) wrote:Addicted to meth wrote:-Z Yaaaa- wrote:Addicted to meth wrote:-Z Yaaaa- wrote:uh.. yeah lol its sort of important to engine control. i mean it WILL run that way but in limp mode and that = no powa!
Brad our cars do not have limp mode
well wtf i swear ive heard people say this around here....
Brad you are right people have said that. I even said it one time back in the day. This was before tuning and us knowing how the ECU really worked on our cars.
What we know now is what we would have called limp mode is actually the car running off the tune. If a sensor goes bad etc... the ECU defaults to the hard tune in the ECU.
Which sensors cause the PCM revert back to the hard tune?
I do not every one of them, but I know disconnecting the o2 sensor will. I know other 's will do it just not sure which ones.
FU Tuning
i wonder if thats why i'm running pig rich... my extended wiring for my upstream 02 to the collector on my ron header has taken some heat abuse... If my pcm is running a hard tune, the LSJ injectors will be too much...
