interchange.

[killerkrank]

I have a 91 Daytona es with a v6 manual. I need to get a new motor for in it but I was wondering what all motors would bolt up to the tranny. Anyone have any info?

[Shadow24V]

What are your goals? Original 12v 3.0 replacement or a wild and wacky motor swap (24v 3.0, 3.5 or 3.8)?

[killerkrank]

I want something that will slip in relatively easy. But I would like yo get as much horse power as possible..i dont know what all is interchangablr on these engines or anything.

[Shadow24V]

"relatively easily" is a very loose term...

from a strictly transmission to engine compatibility aspect, any 6G7x motor will bolt up with very minor issues. This includes the 2.5, 3.0, 3.5 and 3.8 motors. Additionally, some Kia/hyundai motors were derived from the 6G7x series and also can be used. Knightmoves 3.5 DOHC is a Sedona minivan motor and the Hyundai 2.7 is also a 6G7x derived motor.

regarding compatibility with the chassis, only one motor mount needs to really be adapted/changed to fit the other motors (passenger side load bearing mount), but with a motor swap comes additional challenges such as intake and exhaust plumbing, power steering and A/C, and finally, the ECU.

So far, those of us that have gone with different motors, 24v 3.0 SOHC for me, 24v 3.5 SOHC for c2xejk, and 24v 3.5 DOHC for knightmoves, we all have ended up with a standalone ECU (Megasquirt in all three cases actually).

Ultimately it comes down to a few more questions:

1)what is the role of the car? daily driver, fun project car or all-out race?

2)What budget do you have?

3) Can you afford the downtime and customization needed?

If you are limited time or budget-wise, a newer 12v replacement may be the best way to go. There are bolt on turbo headers available and you can get a 12v turbo running fairly cheaply with reliable power at or above 300whp. Barring such things as acts of God and the like, the 12v motor is quite strong and reliable.

[killerkrank]

The motor knightmoves had in the second pictures in the 3.0 picture thread. I would like to build something that would look like that. I want something that would be practical nut I want something to perform too.

[Shadow24V]

Practical + performance don't always go together well, cheaply or quickly.

What budget do you have and can you afford to have the car down for a while?

[knightmoves]

here is a cheap built out lint that will make your 3.0 fun to drive. it will add performance and still keep the car reliable.

get an intake from a 1991 dodge stealth base 3.0 12v here is a pic of the motor.



get the throttle body too. it is 60mm if i remember correctly.

add a cold air intake
under drive pulley ( I know some one that has one!!!LOL)
8mm spark plug wires set
jeep 4.0 spark plugs
if you can deal with it drop the A/C unit
poly motor mounts
replace the O2 sensor as well as the TPS and coolant temp sensor even though these are not performance mods often the sensors are worn and a fresh set of sensors will help the motor run great!
3 inch exhaust with a full flow cat from magnaflow
if you can afford it a set of 10:1 pistons and ring set will bump up the compression
and a set of Mitsubishi Diamante cams from the junk yard

and if you really have a few bucks have KM performance port a set of heads for you!!!

and lastly if you don't mind fabing up a new down pipes you can use the dodge stealth exhaust manifolds. it will mean you'll have to run your front down pipe under the oil pan but it can be made to work.

[killerkrank]

I guess in the long run I have a goal for the car. Im two years out of high school so I guess im a young buck with taste. Lol but I had a guy in high school ran on and on about his srt4. I would like to have him rating shit, sooner or later it'll happen. I'll make it happen some way. Most likely building an engine up outside the car and then dropping it in. I wanna use the sohc 6g72. I like the motor. Its gonna take time but I wanna keep the car drivable so I gotta build the motor separate.

[knightmoves]

Quote:

Originally Posted by killerkrank I guess in the long run I have a goal for the car. Im two years out of high school so I guess im a young buck with taste. Lol but I had a guy in high school ran on and on about his srt4. I would like to have him rating shit, sooner or later it'll happen. I'll make it happen some way. Most likely building an engine up outside the car and then dropping it in. I wanna use the sohc 6g72. I like the motor. Its gonna take time but I wanna keep the car drivable so I gotta build the motor separate.

well if you go with the outline above it will put you on your way. but to go fast enough to chatch a SRT you need a set of turbo headers and a turbo! you need to talk to Ed kelly at KMperformance.com!!!

[knightmoves]

here is the link to his site!!! Kelly-Mulhern Performance

[Shadow24V]

FWIW, Ondonti put down over 500whp on a junkyard 12v SOHC motor and ran 11's with poor shifting. the 12v motor is very hard to kill provided you give it enough fuel to not go BOOM.

You should be able to use the 12v to beat hte SRT4 I'd think

[killerkrank]

See, now that would be nice. I wanna build something I can just cruise with but still shits and gets.

[MC#4]

You're definately gonna wanna look into power adders to catch an srt-4. Turbo/Nitrous have been done a few times. I know there was at least one supercharged 12v around too. Nitrous is cheaper short term but the costs add up real quick to make is safe and use it often.

If I could go back and start my build from scratch, It would have a turbo setup from ed, hands down. Cheap, proven, and effective.

[killerkrank]

I plan to have a turbo on mine. I dont want something radical, but I would like something that hits midrange. I saw that kmp made the headers for it. That's nice, I didn't know where to get them.

[c2xejk]

email me, ed@kmperformance.com and we can talk about what you want and need.