RE: Porsche 911 Gets LS1 V8 Transplant

[rockymount]

BlueEyedBoy said:

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Do you have the weight difference to hand? I was under the impression the LS1 is pretty light.

Don’t think you’re too wide of the mark there. GM claims the full up LS1 is 497lbs, and a 996 3.4l (photo) freights somewhere between 440 and 485lbs (incl. front and side engine mounts & the exhaust). I’m guessing that the 3.6l twin turbocharged and intercooled flat-six will be up near 485lbs, so I guess you’re looking at about a 12lb (5½ Kg) weight difference between the LS1 & 3.6. When you consider the Porsche 996 wasn’t particularly renowned for weight control, weighing in at 1540 kg and then add a few dozen more kilograms on top for the Tiptronic !!!, I think the overall weight difference with the LS1 fitted is going to be fairly minimal

[bobberz]

Looks like an interesting idea, but the wheel choice is crap!

[dom9]

Been following this for quite a while... Always believed it to be a very nice way to save a car that was otherwise scrap and makes for a very interesting project - Good luck to the guy, should have a very quick and unique car

[Motorrad]

zeb said:

waste of a porsche

waste of a V8 engine

waste of my b1oody time as well

Just ouf of interest what would you prefer a dead Porsche and $7K in the bank? This looks far more intersting to me.

[chuntington101]

jellison said:

Was trying to resist posting but too hard.

For starter who by a Tiptronic 911 Turbo - Ok this is Porker fault to make then for mostly the yank market (that can't grasp gear changing at the best of times).

On the LS1 swap. No idea if it will work, but it will need at least a blower to get an LS1 (~340bhp but much better torque than most 911 lumps though maybe not he Turbo) up to say 450+. I'd have gone for an LS6 or 2 as the lowerest spec for this and preferably a grunty LS3 or the admittedly pretty expensive (even second hand in the States) LS7.

Not seen the vids - but from the comments does not sound promising. Let hope their build skills are better than there Donutting!

a cammed and tuned LS1 with sone nice headers should push over 450bhp easy. dont forget this is only a terster to se if it works. no point dropping $20K woth of engine into an untested set now is there!

Chris.

[jellison]

Std one of these is 1540 kg!!!!!!!!!

Jesus modern cars are TRUCKS.

[Fastra]

Motorrad said:

zeb said:

waste of a porsche

waste of a V8 engine

waste of my b1oody time as well

Just ouf of interest what would you prefer a dead Porsche and $7K in the bank? This looks far more intersting to me.

Good job not everyone thinks like this.
It was probably a challenge to do, he had some time and cash to do and he was thinking 'out of the box'.
More power to his* (and people like him) elbow I say.



*Given the thawb and excess of sand on view is it wrong to assume that there's pots of cash available?

Edited by Fastra on Wednesday 29th June 10:45

[jellison]

Christ. My TVR with a 400bhp LS6 was 1130kg.

The weight in this will KILL the performance. all the 4x4 st ain't helping, butthey are heavy even without. Funny how a light a mid 60's - mid 70;s 911 was compared to the Lard buckets they build now. No wonder they have to keep adding ever more power!

[mackie1]

300bhp/ton said:

???

Quite. The LS7 is not the best choice if you want to upgrade and certainly not if you want to add forced induction. They are expensive and the 7l capacity makes the cylinder walls very thin. An LS2 or LS3 is a much better starting point, they handle boost better and you don't end up chucking exotic bits away if/when you upgrade the internals.

[300bhp/ton]

jellison said:

Christ. My TVR with a 400bhp LS6 was 1130kg.

The weight in this will KILL the performance. all the 4x4 st ain't helping, butthey are heavy even without. Funny how a light a mid 60's - mid 70;s 911 was compared to the Lard buckets they build now. No wonder they have to keep adding ever more power!

Yeah but some would say that's a pretty dump comparison, or at the very least a tad unfair

You can't compare 60's cars with ones today as they simply wouldn't be legal to build and sell as road cars.

[jellison]

300bhp/ton said:

Yeah but some would say that's a pretty dump comparison, or at the very least a tad unfair

You can't compare 60's cars with ones today as they simply wouldn't be legal to build and sell as road cars.

That is not quite what I ams saying.

I know that. But they could definately be lighter. 1.5 tons for a fairly small car is not trying hard enough.

Power to compensate is ALOt easy to make than keeping the weight off (that is what I am saying).

[zeb]

Motorrad said:

zeb said:

waste of a porsche

waste of a V8 engine

waste of my b1oody time as well

Just ouf of interest what would you prefer a dead Porsche and $7K in the bank? This looks far more intersting to me.

honestly?...a replacement turbo engine

[J4CKO]

zeb said:

Motorrad said:

zeb said:

waste of a porsche

waste of a V8 engine

waste of my b1oody time as well

Just ouf of interest what would you prefer a dead Porsche and $7K in the bank? This looks far more intersting to me.

honestly?...a replacement turbo engine

Hmm, for me I like the engineering that goes into a conversion, it provides an interesting thread even if it turns out to not be the be all and end all, someone putting a new engine into the correct car for that engine happens every day.

[rockymount]

Cmoose said:

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Actually, I'm pretty sure the original 996 3.4 was lighter than the preceding 993 and was quoted at 1,320kg, which is a pretty good effort! TT is around your quoted figure, but then the 993 TT may have been even heavier.

Can see where you’re coming from and indeed the 996 3.4l normally aspirated Carrera and GT3 models weighed in at 1,320Kg and 1,350 Kg respectively. But we’re talking 966 3.6l Twin Turbo here, complete with pumped up engine, intercoolers, extra rads, 4-wheel drive, 65mm wider bodywork & a full list of std. equip. far more generous than on a Carrera or GT3, hence it being 220Kg/190Kg heavier !!! In fact it was 33Kg heavier than its 993 TT predecessor. Okay, with a top speed of 189 compared with the Carrera 2 / GT3’s 179 & 187, it was quicker in a straight line, but try chucking it around ‘corners’ (like Nurburgring) and the latter two win hands down

[jellison]

rockymount said:

=Cmoose said:=
|

Actually, I'm pretty sure the original 996 3.4 was lighter than the preceding 993 and was quoted at 1,320kg, which is a pretty good effort! TT is around your quoted figure, but then the 993 TT may have been even heavier.

Can see where you’re coming from and indeed the 996 3.4l normally aspirated Carrera and GT3 models weighed in at 1,320Kg and 1,350 Kg respectively. But we’re talking 966 3.6l Twin Turbo here, complete with pumped up engine, intercoolers, extra rads, 4-wheel drive, 65mm wider bodywork & a full list of std. equip. far more generous than on a Carrera or GT3, hence it being 220Kg/190Kg heavier !!! In fact it was 33Kg heavier than its 993 TT predecessor. Okay, with a top speed of 189 compared with the Carrera 2 / GT3’s 179 & 187, it was quicker in a straight line, but try chucking it around ‘corners’ (like Nurburgring) and the latter two win hands down

Exactly - Top end is all largely bks, apart from the Vmax bunch (pointless), it is the power to weight and the base weight + the acceleration say up to about 130 (maybe 150) that really matters, anything is just W*nking over numbers!.

[grahamw48]

J4CKO said:

zeb said:

Motorrad said:

zeb said:

waste of a porsche

waste of a V8 engine

waste of my b1oody time as well

Just ouf of interest what would you prefer a dead Porsche and $7K in the bank? This looks far more intersting to me.

honestly?...a replacement turbo engine

Hmm, for me I like the engineering that goes into a conversion, it provides an interesting thread even if it turns out to not be the be all and end all, someone putting a new engine into the correct car for that engine happens every day.

I agree with you, but unfortunately it seems that most of the contributors to this site wouldn't know one end of a spanner from another, but do read a lot of car magazines.

I wouldn't know a 996 from a 997, but I'd be able to change the engine in either of them.

[zeb]

Thanks graham, I built and rallied minis, talbot sunbeams and MK2 escorts for nigh on twenty years so i'm just about capable of topping up the washer bottle methinks.

Anyroad...as regards this conversion, I just dont see the point of making a fast car slower...which is evidendlty what they've done in this case

[Grovsie26]

It is amazing how they make them so heavy, a 911 is actually small car.

[300bhp/ton]

zeb said:

Thanks graham, I built and rallied minis, talbot sunbeams and MK2 escorts for nigh on twenty years so i'm just about capable of topping up the washer bottle methinks.

Anyroad...as regards this conversion, I just dont see the point of making a fast car slower...which is evidendlty what they've done in this case

But they haven't at all.

They've taken a VERY S L O W car - it didn't run

And made it live again. Also seriously don't underestimate the LS motors for HP and a fat torque curve. Someone said this was actually a LS2, so that's 6.0 litres and 400hp straight off. Simply removing the cats and adding a descent exhaust and induction setup it likely to liberate 20-30hp. H/C setup which is pretty cheap in the US and you're talking an easy 500hp all motor.

[grahamw48]

zeb said:

Thanks graham, I built and rallied minis, talbot sunbeams and MK2 escorts for nigh on twenty years so i'm just about capable of topping up the washer bottle methinks.

Anyroad...as regards this conversion, I just dont see the point of making a fast car slower...which is evidendlty what they've done in this case

Who was ringing your bell ?