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pecivil · 10-12-2006, 01:29 PM

I am supposed to get my 00 box back from the shop tomorrow from its 3.4 conversion.

:dance:

I can speak for Steve Timmons at Instant G. I bought the entire instant g header/cats/muffler set up for the conversion. The quality of his product is outstanding. It takes a awhile to get it, as he makes them when he gets an order. It is not cheap, but the stock boxster header/cat/muffler strangles the 3.4. Of course you can't use the 3.4 stock exhaust stuff cause it dont fit.

You can probably sell your 2.5 for something. I bought a used 2001 3.4 with 31k miles taken from a front end wreck. Subtracting out the price I got for my 2.7l (with 56k miles) the 3.4 cost $4500. My mechanic was able to throughly go over it before I paid.

On the clutch, you cannot use 996 components with the boxster 5 speed tranny. The splines dont match. Plan on buying completely new clutch stuff. My clutch was shot at 56k, and I also needed a new flywheel, as it was too messed up to resurface. I went with the AASCO lt wt flywheel. At least, you pay no extra for labor, since the tranny is already out.

The 996 carrera came with the center radiator, like the Boxster S. You need to think about wheather or not to add it. There are a couple of places that sell a add on kit for it, or your mech can just buy the stock porsche parts. I decided to add it to be safe, but my mech told me that you are probably ok without it for the street. Of course, if you do add it, you will need a boxster S or 996 or GT-3 front bumper cover with the opening for it.

Have you mech replace the RMS on the 3.4 as a precaution. Use the new, revised seal.

You will need a 3.4 throttle body. The boxster one does not work. You will also need some "revised" intake tubing, as again the stock boxster one does not make it distance wise to the filter.

Another easy thing to add is a oil temp & pressure gauges. You use the 3.4 oil pressure sender already on the engine. Add a temp sender on the opposite port (to the oil pressure sender) on the block, and run the wires in to the cabin. I am going to mount then in one of the cubbies below the radio.

You can also do a ECU remap for the 3.4 from GIAC or FVD. They take into account the exhaust mods if you get them. I am going with GIAC.

FVD also has "sport cats" for this engine, which they add to their conversions, I believe. I will see how it feels without the cams. I may add them later. Supposedly they make a big "feel" difference in the motor.

Hope this helps

Monte

10-12-2006, 01:29 PM	#8
pecivil Registered User Join Date: Feb 2006 Location: Poway, CA Posts: 191	Thoughts on the conversion I am supposed to get my 00 box back from the shop tomorrow from its 3.4 conversion. :dance: I can speak for Steve Timmons at Instant G. I bought the entire instant g header/cats/muffler set up for the conversion. The quality of his product is outstanding. It takes a awhile to get it, as he makes them when he gets an order. It is not cheap, but the stock boxster header/cat/muffler strangles the 3.4. Of course you can't use the 3.4 stock exhaust stuff cause it dont fit. You can probably sell your 2.5 for something. I bought a used 2001 3.4 with 31k miles taken from a front end wreck. Subtracting out the price I got for my 2.7l (with 56k miles) the 3.4 cost $4500. My mechanic was able to throughly go over it before I paid. On the clutch, you cannot use 996 components with the boxster 5 speed tranny. The splines dont match. Plan on buying completely new clutch stuff. My clutch was shot at 56k, and I also needed a new flywheel, as it was too messed up to resurface. I went with the AASCO lt wt flywheel. At least, you pay no extra for labor, since the tranny is already out. The 996 carrera came with the center radiator, like the Boxster S. You need to think about wheather or not to add it. There are a couple of places that sell a add on kit for it, or your mech can just buy the stock porsche parts. I decided to add it to be safe, but my mech told me that you are probably ok without it for the street. Of course, if you do add it, you will need a boxster S or 996 or GT-3 front bumper cover with the opening for it. Have you mech replace the RMS on the 3.4 as a precaution. Use the new, revised seal. You will need a 3.4 throttle body. The boxster one does not work. You will also need some "revised" intake tubing, as again the stock boxster one does not make it distance wise to the filter. Another easy thing to add is a oil temp & pressure gauges. You use the 3.4 oil pressure sender already on the engine. Add a temp sender on the opposite port (to the oil pressure sender) on the block, and run the wires in to the cabin. I am going to mount then in one of the cubbies below the radio. You can also do a ECU remap for the 3.4 from GIAC or FVD. They take into account the exhaust mods if you get them. I am going with GIAC. FVD also has "sport cats" for this engine, which they add to their conversions, I believe. I will see how it feels without the cams. I may add them later. Supposedly they make a big "feel" difference in the motor. Hope this helps Monte __________________ Arctic Silver 2000 Boxster 3.4l w/Sport Design Package Supersprint Boxster S Headers/Cats/Muffler AASCO Lt. Wt FLywheel Evo Intake Partial Carbon Interior Black Leather Sport seats M030 Sway Bars Litronics w/ Clear Corners Boxster S brakes B&M Short Shifter PnP rear Speakers + Amp