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I got mine rebuilt earlier this year at a place called 9xx Motors in Southern California. It's been 6 months and 4K miles and so far so good. I know that's not close to you but if you have to ship the engine anyway it may not matter much. He's a factory trained Porsche tech and specializes in Porsche rebuilds.
Another user did this spreadsheet ~2 years ago. You might find it helpful:
You can check the dyno thread for graphs of many different combos.
Yep. Good to see. Would love to see the 996 GT3 numbers. Still not sold on the Honda 4 banger. Doubt it's useable on the track. Question is what LS makes the most sense for the 996 and what set-up. Lot of guys seem to have done a swap. Doesn't look like many track it. But I bet they are out there.
Yep. Good to see. Would love to see the 996 GT3 numbers. Still not sold on the Honda 4 banger. Doubt it's useable on the track. Question is what LS makes the most sense for the 996 and what set-up. Lot of guys seem to have done a swap. Doesn't look like many track it. But I bet they are out there.
I don't want to sidetrack the thread but I do want to point you in a direction that may be helpful @kondata17 is running an LS based setup on what I believe principally is a track car. You can find a video or 2 in the track pics/vid thread.
To the OP, may want to keep the below on your radar.
The real issue with the ls v8 engine is the high center of gravity..not the power ...
The main reason Porsche has stayed with the flat six in the 911 is the low center of gravity...you can't get that with an in-line or V engine, just isn't possible...
Take any in-line or V engine of the same weight as a flat six and mount them on a stand at center line of the crankshaft and weigh the 4 legs, then turn the engine vertical and re-measure,the weight, you will see the difference in center of gravity.. In-lines and V's are "top heavy" compared to flat six..
And that is in the "Porsche Spirit".... good handling characteristics and well balanced are the primary importance above brute power....
The real issue with the ls v8 engine is the high center of gravity..not the power ...
The main reason Porsche has stayed with the flat six in the 911 is the low center of gravity...you can't get that with an in-line or V engine, just isn't possible...
Take any in-line or V engine of the same weight as a flat six and mount them on a stand at center line of the crankshaft and weigh the 4 legs, then turn the engine vertical and re-measure,the weight, you will see the difference in center of gravity.. In-lines and V's are "top heavy" compared to flat six..
And that is in the "Porsche Spirit".... good handling characteristics and well balanced are the primary importance above brute power....
Maybe you're right. I am pretty well in-tune with the handling characteristics of my car, I'll find out pretty quickly if the handling characteristics and balance are upset. I will say though, A 911 is anything but well balanced, in my car currently 63.6% of the weight is on the rear tires. The imbalance is inherent to the chassis and driving the car fast is to take advantage of the benefits the imbalance gives (rear grip) while managing to maximize the disadvantages (understeer). I don't see a center of gravity change any differently, but I would much prefer to manage it with another 100HP at every point in the RPM range.
The real issue with the ls v8 engine is the high center of gravity..not the power ...
The main reason Porsche has stayed with the flat six in the 911 is the low center of gravity...you can't get that with an in-line or V engine, just isn't possible...
Take any in-line or V engine of the same weight as a flat six and mount them on a stand at center line of the crankshaft and weigh the 4 legs, then turn the engine vertical and re-measure,the weight, you will see the difference in center of gravity.. In-lines and V's are "top heavy" compared to flat six..
And that is in the "Porsche Spirit".... good handling characteristics and well balanced are the primary importance above brute power....
This is why the only swap I'd personally consider is a boosted Suby. Light, compact, horizontally opposed with a low center of gravity.
I am not sold on swapping an LS or Honda 4 banger into a 996 for many reasons. Would prefer a rebuilt m96. However, I would consider a 996 gt3 mezger swap, but at the end of the day, the cost would be crazy silly and i wouldnt get the performance i wanted from it without a rebuild and more cost.
I'll dance with the girl I came to the party with.
This is why the only swap I'd personally consider is a boosted Suby. Light, compact, horizontally opposed with a low center of gravity.
But to make real power you need to throw turbos etc. at it, some of which is inevitably going to raise the CG. Although I guess one could keep it pretty much in the Porsche turbo realm, so, yeah. And the aftermarket support for that platform is right up there with the Honda world.
09-18-2022, 07:37 PM
