In terms of cost, here’s a basic parts list from Renegade:

$8500 LS3 engine package 430hp (480hp $500 more)
$2600 914 LS basic kit
$2200 914 LS Boxster LS clutch and adapter upgrade
$250 Starter
$1200 Heavy Duty Axles
$595 Rear Trans mount
$750 Misc. Hydraulic Clutch Conversion Parts
$375 Boxster S shifter and cables
$3000 Good used Boxster S transaxle
$175 Air Cleaner Kit
$180 Sport mount kit for trans
$120 Poly mounts for engine
$750 GPS speedometer upgrade (do I really need this??)

Do it!

My parts list:
Cayman S 6 speed, shipped to my door $1000
Hydraulic clutch (Wilwood & Howe) $200
Heavy Duty Axles $230
Heavy Duty CV joints $1200
Magnetic hall speedo sensor $50
Boxster Shifter $60
Short shift kit $100
Cayman S shift cables (Porsche) $400
Passat Parts car $1000
Garret Turbo $800
Radiator, oil cooler & shroud $300
Misc parts $2000+
DOM tubing $400
Welding supplies $300

What am I missing?

I'm would think some of this stuff could be gotten elsewhere for a better price., like the trans and engine?

Just would have to know what pieces of the puzzle I would need to purchase from them, and what not. Not sure on all of it. Some of it would probably be favorable to get from them.

Total $20695 .....Damn

The LS3 engine is $6500 from GM shipped for the 430HP and $500 more for the hot cam 480 engine. The ECU and wiring harness from GM is $1100.

If you can't do it yourself I guess thats the price you have to pay.

that $21K seems pretty high. If you're looking for a monster though, that's one way to get it done!

Just a tip...from experience: Get the tub in order 100% before you buy ANYTHING. It's a TON easier to make sure that you're starting with something that'll hold up to the increased HP, than to buy a bunch of parts and then wonder if it'll all work out.

Just my .02

Holy Crap! I'll sell you one for $100!

I just use one of my old droid phones and a free app called "Torque".
It even logs GPS data and accelerations.
I use another spare droid phone as my garage entertainment unit :-)

Does the Boxster S trans have cable driven speedometer?

No provision for speedo at all. I'm running a magnet ring and hall sensor.

I wonder if that is what I already have with the Tachometer, as there is a magnet on the axle?

Nothing against the kit manufacturers but IMHO this is the route I would take.
Cheapest solution- purchase a completed LS conversion.

Put a kit together- some estimates.
Motor- As Bigkat said- cheaper new from GM. Or just buy one off CL, or purchase a wrecked Camaro. 3000-5000$ Make sure you get the TB and Computer, exhaust manifolds, air filter. The Intake & TB gets mounted backwards with the air filter vented into the trunk as example.
Adapter and clutch @ 1000$ from KEP
Engine bar- 200$ from the kit guys
Transaxle relocating offsets- 20$ worth of metal, drilled.
Lengthen Shifter- 5$ in parts, DIY weld.
Plastic Overflow tank - 10$ Ebay
Aluminum expansion tank - 40$ Jegs/Summit/Dedenbear.
Electric Water Pump- 250$/Dedenbear
Toy-Jet water manifold (replace the water pump)- 250$
Yellow stripe hoses- 80$ NAPA
Radiator- 180$ - Ebay
Fans- 60$ Ebay
Hose transitions - 30$ from Jags that run.
High torque starter- 200$ Ebay
GPS Speedo- 170$- Speedhut

Do your research, read as many threads as you can, go look at some completed cars. troll the classifieds for conversion parts. Save some money! Have fun.

Some of the stuff I may be able to use from the WRX conversion already, but will keep this list handy.



Nothing against the kit manufacturers but IMHO this is the route I would take.
Cheapest solution- purchase a completed LS conversion.

Put a kit together- some estimates.
Motor- As Bigkat said- cheaper new from GM. Or just buy one off CL, or purchase a wrecked Camaro. 3000-5000$ Make sure you get the TB and Computer, exhaust manifolds, air filter. The Intake & TB gets mounted backwards with the air filter vented into the trunk as example.
Adapter and clutch @ 1000$ from KEP
Engine bar- 200$ from the kit guys
Transaxle relocating offsets- 20$ worth of metal, drilled.
Lengthen Shifter- 5$ in parts, DIY weld.
Plastic Overflow tank - 10$ Ebay
Aluminum expansion tank - 40$ Jegs/Summit/Dedenbear.
Electric Water Pump- 250$/Dedenbear
Toy-Jet water manifold (replace the water pump)- 250$
Yellow stripe hoses- 80$ NAPA
Radiator- 180$ - Ebay
Fans- 60$ Ebay
Hose transitions - 30$ from Jags that run.
High torque starter- 200$ Ebay
GPS Speedo- 170$- Speedhut

Do your research, read as many threads as you can, go look at some completed cars. troll the classifieds for conversion parts. Save some money! Have fun.

Some of the stuff I can probably use from the Subie conversion, and some things I was able to look up, but some I'm not able to put the face to it.

Adapter and clutch @ 1000$ from KEP
Engine bar- 200$ from the kit guys
Transaxle relocating offsets- 20$ worth of metal, drilled.
Toy-Jet water manifold (replace the water pump)- 250$
Hose transitions - 30$ from Jags that run.
High torque starter- 200$ Ebay

you have a subaru conversion?

why not save some money and dump about 10k into that motor...
It will put out some serious power for 10k

2004 WRX 2.0

The Kennedy adapter for the Boxster transaxle alone is $1900. This is without the clutch Kit. You can use a stock Porsche one at $650 or the Kennedy one at $950.
You can get all of the water pump fittings from Meziere and the remote pump. This will be almost $1000.
Stuff adds up fast. Makes keeping the Subaru engine look better.

If I was you I'd spend about $1000 and just put a Subaru transaxle in your car. It will feel like a different car with this.


Bob

Wow that LS adapter for the boxster is $$$ wonder why so much more than the Ls/901 adapter?

I went with the Dedenbear water pump- WP3 @314$ but you can catch discounts that bring them down @ 280$. Autoplicity.com
Look for Mezieres on Craigslist, the boating community uses them.

The log plenum from Toyjet I see is up to 350$



Jags that run.com hose adapters-



Renegade will sell you the engine bar-


Here is a list of conversions. Look for build threads by member name.
http://www.914world.com/bbs2/index.php?sho...c=20374&hl=

As another option, what can be done with the engine I currently have, aside from the Subie trans?

I wonder on the engine bar, if i discontinue my engine bar for the Subie?

I could make the engine bar, maybe, if I had a pattern.

Also, how do I look up the members name/posts?

My mechnic showed me how to do the pipes with the water pump, as he is doing an ls conversion on a camaro.

I wonder on the engine bar, if i discontinue my engine bar for the Subie?

I could make the engine bar, maybe, if I had a pattern.

Also, how do I look up the members name/posts?

My mechnic showed me how to do the pipes with the water pump, as he is doing an ls conversion on a camaro.

You could buy a newer engine for abut 6k from JDM engines..one of the later turbos.

Seems you have quite a bit invested in the setup, why not stick with it, just replace the engine.

Which particular engine, did you have in mind, that has the later turbo?

I wonder how much chassis stiffening is required to us a LS engine?

I already have the Engman long kit.

The guy at Kennedy told me the best trans would be the Boxster S 6 speed, 2000-2004?

I'm not sure if I need a hydraulic clutch, or no?

Some parts I need more specifics on what part number/type to ask for.

High torque starter-what type?
Heavy Duty Axles-what type
Hydraulic Clutch Conversion Parts-do I need a hydraulic clutch?
Boxster S shifter and cables-use what typicall would have come with the trans?
Good used Boxster S 6 speed, transaxle-2000-2004 best place to find one?
Heavy Duty CV joints-what type
Magnetic hall speedo sensor-what type

Boxster S uses a 108mm CV, same as 930 turbo. http://www.rcvperformance.com/product-deta...ku=301174CC-28M

www.pacificcustoms.com

Axles will be EMPI style 28 spline. The Boxster diff is offset so you will need two different axle lengths. Measure once the tranny is installed in the car. Pacific customs sells these individually if you call them. around $120 each

Wilwood makes a good clutch master cylinder. I'm using a 5/8" with the Boxster tranny. Summit Racing has these.

speedo sensor depends on what speedo you have. I used a "grease ring" from Pacific and installed magnets in the ring. My sensor mounts to a custom bracket. The sensor is a standard VW unit for use with the VW speedo.

High torque starter will match your engine. Summit Racing should have these too. www.summitracing.com

Engman kit is strong enough but if I had 500hp, I would install a roll cage.

Debuting at the Tokyo Auto Show in October 2007, WRX STI versions build further on the standard WRX cars. The STI available in Japan is fitted with the 2.0-liter EJ207 engine with twin scroll turbocharger generating 227 kW (308 PS) and 422 N·m (311 lb·ft) of torque. Export markets receive the higher-displacement 2.5-liter EJ257 unit with the single-scroll VF48 turbocharger rated at 221 kW (300 PS) and 407 N·m (300 lb·ft) of torque. The turbocharger directs air through a larger top-mount intercooler which has lost the red "STI" that was on previous generations. The STI (3,395 lbs) is heavier than the WRX (3,174- 3,240 lbs depending on trim) due to a more robust transmission, rear differential and other chassis reinforcements.

EJ257[edit]


EJ257 engine
DOHC 16-valve turbo. Originally designed for the North American Impreza STI in 2004 with AVCS and DBW. The same shortblock as EJ255 except the EJ255 has a different domed piston vs the EJ257. The heads also have different components. Subaru of America designates the same part numbers for an EJ255 shortblock, and EJ257 shortblock with the exception of the pistons.

Usage:

US Market Impreza WRX STi MY04~MY07 (300 hp, 293 hp (New SAE standard))
US Market Impreza WRX STI MY08~MY14 (305 hp (New SAE standard))
US Market Subaru Legacy/Subaru Outback MY05~MY06
Asian, European Market Impreza WRX STi 05~present (280 hp, 40KG/m)

When I called Kennedy eng., Clutch, flywheel, adapter, pilot bearing, bolts, etc. was $2,800.00, plus shipping.

I don't know if I am missing something, but looks like in the basic kit from Renegade, I would get that, plus the basics, for $2,600.00?? IDK, maybe this isn't for the boxster trans though?

$2,600 BASIC LS-SERIES CONVERSION KIT

INCLUDES:

Renegade Custom Motor Mount Assembly

Custom Rear Transaxle Set Back Blocks

Billet Aluminum Adapter Plate

One Piece Billet Flywheel and Starter Ring Gear

Stage Two High Performance Nine Inch Pressure Plate

Kevlar High Performance Nine Inch Clutch Disc

Custom Pilot Bearing

Throw Out Bearing

Water Pump and Fittings

Billet Aluminum Coolant Inlet/Outlet Plates and Fittings

Custom Aluminum Filler Neck

In Line Filler "T"

Coolant Outlet "Log"

Custom Alternator Bracket

Gates Green Stripe Hose

Alternator Belt

All necessary hardware

1. The guy at Kennedy told me the best trans would be the Boxster S, 6 speed, 2000-2004? Does that sound true?

2. What about gears for a boxster trans, using the LS engine, or would I need to have the gearing changed?

3. Boxster S shifter and cables-use what would have come with the trans?

4. Best place to find trans/shifter?

Boxster S uses a 108mm CV, same as 930 turbo. http://www.rcvperformance.com/product-deta...ku=301174CC-28M

www.pacificcustoms.com

Axles will be EMPI style 28 spline. The Boxster diff is offset so you will need two different axle lengths. Measure once the tranny is installed in the car. Pacific customs sells these individually if you call them. around $120 each

5. I currently have a 5 lug, but what would the hubs I currently have, be off of, or will it work with that particular spline?

6. If I use the Corvette, drive by wire, just discontinue the cable side of the trans, and convert the current clutch cable over to hydraulic?

Better gear ratios for V8 engines come from Audi TDI trannies like this one. The TDI's are torqey motors with a higher final drive than the Boxster 6 speed. This makes them ideal for a V8 conversion.

http://www.ebay.co.uk/itm/AUDI-A6-C5-2-5-V...=item1c40be5d80

This is a 6 speed. from the looks it is a 012 front with a 01E rear section. But Audi & Getrag made trannies with interchangeable parts. The 012 is the same casting as the Boxster 5 & 6 speed. Some Boxster trannies have a different bell housing than this.

Now you would have to fab shift linkage for this one but it's easy to copy the Boxster setup. I did this on my 5 speed since it originally came from a Passat not a Boxster and one of the bosses was not drilled and tapped like the Boxster.

In this case, you could swap this into a Boxster or my car and it would bolt right on.

ebay UK is a great resource to find FWD TDI trannies. As I said before, TNT Shipping air freighted my 6 speed from UK to San Francisco in 4 days for $245. You would only need the seller to strap it to a pallet.

Is DQS, the only code that will work? I see they make an 8 speed gear box as well.

Higher final drive, I assume, means that the rpm in road gear is less, like I want?

Any pics of the Boxster setup to use as a guide?

That type of trans can't be located state side?

Not sure what this means: 012 front with a 01E rear section

Then I presume there are going to be changes to the axles, adapter plate, flywheel, clutch, etc, again, compared to the Boxster?

012 is a partial Audi part number. It is the transmission used in FWD Audi's & VW that have a longitudinal engine. It is also the same case as the Boxster 5 speed. The 01E is a European transmission found in TDI's, A8 and some others. The 01E is very rare in the US as a FWD tranny. Both of these trannies are available in Quattro. You want to find a FWD version.

The link I posted above looks like the front half of a 012 and the rear half of a 01E. The 01E in Europe is matted to a V8 in the A8. It is perfect for an LS conversion. The problem is most 01E's are Quattro trannies. Since they are rare most shops import from Europe.

Identifying the tranny is also a challenge unless you know what you are looking at. Most ebay sellers identify by the vehicle typa and not by the transmission type. If you try to buy one here (US) odds are it will be imported and you will pay over $5k for it. Andys runs a 01E on his V8 conversion, so he can speak to how much and how hard it is to get one.

Since the introduction of the 01E there has been many more choices to pop up. The Cayman S, 6 speed I have is built by Getrag but has the same bell housing pattern as the 012. My Getrag is called a 466, not a 012. Again just a partial part number. The Getrag 466 was also available in Audi's as both a FWD and quattro.

The TDI 5 speed, code DUK (also 012 based)is very common in the UK and has great ratios for a V8. Since it normally connects to a diesel engine, it can handle torque.

The Audi/VW 02M is the GTI tranny which will not work for us.

Confused yet?

Ok, so the two codes I am to look for, are: DQS, and DUK?

Any candidates I would have ya look at to see if it is one that will, or will not work, since I am not sure by looking myself.

Anyone have a install picture of the Boxster S, on how it is mounted in the rear?

Also wondering after getting it up on the hoist today, if a person couldn't adapt part of the Subie framework, and LS motor mount, and combine them, and would also aid in stiffening it up?

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Is the factory fuel tank used, if a electric fuel pump is used in the tank?

I'm wondering why the round and square holes, on each side of the water pump, and I would imagine, the two smaller tubes are for the heater as far as using this junk pump, for a pattern for the water logs.

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Search Engines are your friends...

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