Can't decide, engine swap or PI swap? A few questions... - Forums at Modded Mustangs
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post #1 of 25 Old August 31st, 2007, 12:34 AM Thread Starter
 
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Can't decide, engine swap or PI swap? A few questions...

What would be more worthwhile, doing a full PI swap on my 122k mile engine or doing an entire engine swap with a 99+ GT that has 50k or less miles?

Im thinking about my car in the long run so obviously the engine swap would be better but how much would it cost?

And about how much would the labor cost be for an entire engine swap?
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post #2 of 25 Old August 31st, 2007, 12:42 AM
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engine swap, better IMO and do it yourself, buy you a junker to drive while the stang is getting operated on and we can guide you, and buy yourself a manual for your car.

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post #3 of 25 Old August 31st, 2007, 12:51 AM
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Originally Posted by ujslost
engine swap, better IMO and do it yourself, buy you a junker to drive while the stang is getting operated on and we can guide you, and buy yourself a manual for your car.
i agree....if ya got the cash and the ability go with a 99+ motor...

i recently made the decision to go PI this afternoon, and am in search of a set of heads.


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post #4 of 25 Old August 31st, 2007, 01:01 AM
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forget the 99+ swap go out and find yourself a 4V (96-98).. 2Vs are worthless cant do anything with these god dam motors in N/A form

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post #5 of 25 Old August 31st, 2007, 01:37 AM
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more power and compression just doing the p.i. swap. either way, you arent going to lose any performance.



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post #6 of 25 Old August 31st, 2007, 01:40 AM Thread Starter
 
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Would it be worth it though with 122k miles on the engine?
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post #7 of 25 Old August 31st, 2007, 01:47 AM
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only if the engine has been properly maintained. you can run a compression test on it to get a general idea on what kind of wear is on the motor.



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post #8 of 25 Old August 31st, 2007, 03:02 AM
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how can you do a compression test i have 144 k on mine and i'd like to test it. also in the future id like to swap it out for either a rebuilt 96 gt motor, a 99 gt motor, or maybe a 96 cobra motor depending on how much i save i was lookin at them at autozone today


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post #9 of 25 Old August 31st, 2007, 03:34 AM
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just have a compression tester. these motors should hold around 155psi.



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post #10 of 25 Old August 31st, 2007, 06:21 AM
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Wouldn't doing a full PI swap "technically" knock the miles down a little bit?? I mean, putting new heads, valve train components, and changing some other things like timing chains, o-rings, you know...little shit, while you're in there would help the engine alot wouldn't it? I'm not saying I'm totally against the engine swap. It is a great idea, but entertain a more simple approach first...lol
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post #11 of 25 Old August 31st, 2007, 08:30 AM
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get the 4V

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post #12 of 25 Old August 31st, 2007, 09:18 AM
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Quote:
Originally Posted by AnglicoGT98
Wouldn't doing a full PI swap "technically" knock the miles down a little bit?? I mean, putting new heads, valve train components, and changing some other things like timing chains, o-rings, you know...little shit, while you're in there would help the engine alot wouldn't it? I'm not saying I'm totally against the engine swap. It is a great idea, but entertain a more simple approach first...lol
Not really. Because you are only rebuilding the valvetrain pretty much. Or the "top end" of the motor. The rings and pistons and cylinder wall all still have the xxx,xxx miles on them. I have seen ppl rebuild the top end of a high milage motor and therefore blow the bottom end. Putting new parts on old parts tends to put older parts under more stress. I think this usually is the case in engines with over 250k miles though.

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post #13 of 25 Old August 31st, 2007, 11:52 AM
 
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do the PI swap but, look into rebuilding the short block, get forged internals and bore it out. If you do that, ya um you pretty much have a brand new motor. but its all up to you and what you want. do like they said and get a beater and do it right!
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post #14 of 25 Old August 31st, 2007, 02:30 PM
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Quote:
Originally Posted by ujslost
Quote:
Originally Posted by AnglicoGT98
Wouldn't doing a full PI swap "technically" knock the miles down a little bit?? I mean, putting new heads, valve train components, and changing some other things like timing chains, o-rings, you know...little shit, while you're in there would help the engine alot wouldn't it? I'm not saying I'm totally against the engine swap. It is a great idea, but entertain a more simple approach first...lol
Not really. Because you are only rebuilding the valvetrain pretty much. Or the "top end" of the motor. The rings and pistons and cylinder wall all still have the xxx,xxx miles on them. I have seen ppl rebuild the top end of a high milage motor and therefore blow the bottom end. Putting new parts on old parts tends to put older parts under more stress. I think this usually is the case in engines with over 250k miles though.
+1


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post #15 of 25 Old August 31st, 2007, 02:46 PM Thread Starter
 
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hmmm. Im still split on what I should do. Ill do the compression test and see if that changes my mind. Nothings gonna happen for at least 10 months though so I guess that leaves me more time to think lol.

And the Cobra swap sounds tempting as well but I think thats gonna be more money then Im willing to spend.
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post #16 of 25 Old August 31st, 2007, 02:57 PM
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Do a compression test! And tell us where your at

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post #17 of 25 Old August 31st, 2007, 03:00 PM
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Quote:
Originally Posted by k3vin
hmmm. Im still split on what I should do. Ill do the compression test and see if that changes my mind. Nothings gonna happen for at least 10 months though so I guess that leaves me more time to think lol.

And the Cobra swap sounds tempting as well but I think thats gonna be more money then Im willing to spend.
For a 4v swap ur looking at spending well over 5 grand when ur all said and done, where as u can find a cheap PI swap for under 1500 if u take ur time and look.


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post #18 of 25 Old August 31st, 2007, 09:14 PM
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npi to pi swaps are great for you guys! people are showing dyno results of 99rwhp with vt heads, cams, and header back alone! it is well worth the money and by far the best bang for the buck. if you are on a budget, do the swap. if you have the money to blow, just get a cammer



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post #19 of 25 Old August 31st, 2007, 11:10 PM
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npi to pi swaps are great for you guys! people are showing dyno results of 99rwhp with vt heads, cams, and header back alone! it is well worth the money and by far the best bang for the buck. if you are on a budget, do the swap. if you have the money to blow, just get a cammer
i must sound like and idiot but what is a cammer?


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post #20 of 25 Old August 31st, 2007, 11:11 PM
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i must sound like and idiot but what is a cammer?
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