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Will an sti motor go into a 996?

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Old Sep 11, 2012 | 09:06 PM
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Will an sti motor go into a 996?

Lets just say I got shafted by a Porsche engine shop and replacement motors have gone thru the roof.
 
Old Sep 11, 2012 | 09:10 PM
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oh.....Roock....
 
Old Sep 11, 2012 | 09:37 PM
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Old Sep 11, 2012 | 09:41 PM
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call up jason at ufo motorsports, he probably has another 996 motor. (714-794-4276)
 
Old Sep 11, 2012 | 10:14 PM
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Thanks but Fabian already f'd me out of $15k+ on this and is leaving me with a car and no motor. He "lost" my original 3.4 so I don't even have a core.
 
Old Sep 12, 2012 | 06:34 AM
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V8

This would be a perfect time to put in a small block V8, http://www.renegadehybrids.com/

I would also contact Jake Raby at flat 6 innovations.
http://www.flat6innovations.com/

On the V8 deal, you could have a local shop do it as there is no need for modifications.
 
Old Sep 12, 2012 | 07:34 AM
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I used to have an STI(gc8 STI RA conversion to be exact). IIRC the intake manifold sticks out further than the Porsche so not sure it will fit without modification or custom manifold at the very least.

Hope you get your engine issue resolved. It sucks anytime you pay that kind of money and someone doesn't pull through.
 
Old Sep 12, 2012 | 07:35 AM
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Originally Posted by FLA996TT
This would be a perfect time to put in a small block V8, http://www.renegadehybrids.com/

I would also contact Jake Raby at flat 6 innovations.
http://www.flat6innovations.com/

On the V8 deal, you could have a local shop do it as there is no need for modifications.
ahh. hindsight.

i contacted Jake before i began this and he quoted $18k to rebuild my 3.4 and was very vague about what he'd do. Too much $ for a car worth less than that.

I've also been to Renegade. it's a decent mod. But how many of you would spend $30k on a car worth $10k to begin and worth maybe $15k after the mod.

still no answers to my original question. my thought is that an sti motor is less $ than a porsche motor, more reliable, more powerful (than a 3.4), possibly lighter?, still an opposed engine, and has more potential for power mods. if my car has to become a frankenstein, this sounds like a feasible route to go.
 
Old Sep 12, 2012 | 07:56 AM
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Originally Posted by FLA996TT

On the V8 deal, you could have a local shop do it as there is no need for modifications.
can you elaborate on this? maybe you have better insight into this. i dont think it as straight forward and bolting a Silverado engine into the rear of my car. seems Renegade has put the time into developing engine harnesses and mounting brackets that would preclude a "local shop" from doing the mod.
 
Old Sep 12, 2012 | 08:14 AM
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Originally Posted by waydeki
ahh. hindsight.


still no answers to my original question. my thought is that an sti motor is less $ than a porsche motor, more reliable, more powerful (than a 3.4), possibly lighter?, still an opposed engine, and has more potential for power mods. if my car has to become a frankenstein, this sounds like a feasible route to go.
Yes they fit in the engine bay, no its not plug and play. It will cost 3x times what a remanufacted engine will. They only run ~7K give or take for a 3.4 rebuilt N/A motor now. Add in all the rest of the conversion gear to get your gauges to work and its going to be a major project.

The ls1 is a much easier swap due to the wiring and the fact that off the shelf minimal wire harness exist for under 1K. But still its going to be 3x the cost of a stock motor.

Also what in the world was done to your block for 15K if it needed a rebuild. Unless it had a hole in the block, or you had to keep the matching number block for some reason a remanufactured motor with a core extange would have been dead simple.

Not being mean here but the cheapest option is to sell the car and go buy a factory turbo if its power that you want.
 

Last edited by WearyMicrobe; Sep 12, 2012 at 08:16 AM.
Old Sep 12, 2012 | 08:26 AM
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Originally Posted by WearyMicrobe
Yes they fit in the engine bay, no its not plug and play. It will cost 3x times what a remanufacted engine will. They only run ~7K give or take for a 3.4 rebuilt N/A motor now. Add in all the rest of the conversion gear to get your gauges to work and its going to be a major project."

i get your point.

"The ls1 is a much easier swap due to the wiring and the fact that off the shelf minimal wire harness exist for under 1K. But still its going to be 3x the cost of a stock motor."

i like the LS1 but why 3x the cost if it's as easy as you say and wiring is only $1k? An LS motor isn't very expensive.

"Also what in the world was done to your block for 15K if it needed a rebuild. Unless it had a hole in the block, or you had to keep the matching number block for some reason a remanufactured motor with a core extange would have been dead simple."

clarification, the engine isn't the only work he was supposed to do. He f'd up a 2nd gear/clutch rebuild. He f'd up a gt3 nose cone install. He f'd un an exhaust install by stripping out the block and using mismatched fasteners. The engine itself is about $10-12k of it. Let's say that working with Fabian is like babysitting an bipolar infant and that costs money when he's several states away and in Germany renewing his Visa half the time.

"Not being mean here but the cheapest option is to sell the car and go buy a factory turbo if its power that you want.
not mean...realistic.
 
Old Sep 12, 2012 | 08:36 AM
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Originally Posted by stephan_porsche
There is tons of re-manufactured 3.4L motors for $5K-7K + @1500-3000 install."

find me a rebuilt 3.4 for $8k installed.

"I had my whole motor tore down to bare block and rebuilt with every single performance part imaginable for less than what they quoted you."
really, by who?

"The Renegade V8 is an AWESOME idea but your right $30K is RIDICULOUS! If they could get it down to $10K-15K it would be worth it."

that's what i told them before they showed me the door.

"There is an Arab guy in Kuwait who did an AMAZING V8 swap for $1500 plus the Engine. He emailed one time and gave me step by step instructions on everything, great guy, you can find him by searching YouTube Videos.
uh, no thanks.
 
Old Sep 12, 2012 | 08:42 AM
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This is what I meant by intake manifold sticking out too far. If you notice the intake manifold and where the throttle body attaches, it can work in a Boxster(has been done a few times now) because it doesn't slope since it's mid-engine and has the option as in the pic of extending the intake plumbing into the trunk area if need be.





Imagine the throttle body area now on a rear configuration 911, there is simply no room for the intake piping and or throttle body to go without sticking past the trunk lid since it slopes down. This is why I think a custom intake manifold would be needed at the very least or have the intake manifold flipped 180 degrees and see if there is any clearance on the other end towards the firewall for throttle body and intake plumbing.

Of course I can be wrong since I never physically fit an STI motor so I don't know if there is any wiggle room to push the engine as far forward as possible and have some space for the intake tubing but even so, I'd imagine it would be tight, not to mention a sharp bend(not as relevant since it's forced induction).

Other issues would be intercooler placement(and pipe routing/fitting) and also the pressure drop before and after the intercooler since you are extending the piping from the normal configuration.
 
Old Sep 12, 2012 | 10:16 AM
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Originally Posted by waydeki
Thanks but Fabian already f'd me out of $15k+ on this and is leaving me with a car and no motor. He "lost" my original 3.4 so I don't even have a core.
Call a lawyer?

A
 
Old Sep 12, 2012 | 10:22 AM
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Sorry, but I have to say it... I hate when people say "why spend $15k on a car worth $20k". Mate, cars in most cases are not investments, they are depreciable assets.

Would I put another $10-15k in my car for a new motor? Hell yes. I love my Porsche. People tell me all the time "for the money you put into it, you could have bought a Turbo". So. Then I'd have a stock Turbo and not the customized Porsche I now own.

It is a ridiculous statement in my mind. If you don't want to keep the car, sell it and buy something else. When that breaks, don't fix it either and buy something else. Or... own it, love it, fix it, and keep it.

The fact is, most of these cars were north of $90k new. Just because the car's value goes down, doesn't mean that materials and labour it takes to make the parts does. They remain the same. Would you spend $15k on a new motor for a car worth $90k. Likely yes. The fact is, that is exactly what you are doing.

I've worked on and restored/customized many cars already. The Porsche is the best return on investment in that you can do a suspension mod and see awesome results. It is also a very easy car to work on as it was built in many cases to quickly change parts on the track. A suspension mod in a Honda Civic for example is, well, a little pointless in my view.

*end rant*

Cheers
Aaron
 


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