cscrogham

Category: Engine - Power Adders
Price (no $ sign please): $3500
Private or Vendor Listing: Private Listing
Part fits (select ONLY those which apply): 911, 964, 993
Location (Region): SouthEast
Item Condition: Brand New

Offering a great deal on a set of L&N Engineering cylinders with JE pistons, 102mm bore with 109mm case register to upgrade a 3.6 to 3.8 with 11.5CR. This is a complete set with billet cylinders, alloy pistons, rings, pins and keepers. These parts were never installed and are BRAND NEW, not even test fitted in an engine. Sacrifice for $3500 including shipping to your US address.

pat_thonon

Hi,

Do you still have the L&N piston and cylinder for sell.
If yes are they slip-fit or case machining

Thanks

cscrogham

No, I sold those.
I do have a very nice set of 3.8 RSR pistons and cylinders for sale though, 1 set of used stock 11.5CR with about 35hrs and a set of sprint 12.5CR with about 20hrs. They are both original Mahle with 102mm bore for internal O-ring sealing (ie slip fit for RSR case, would have to machine a stock case).

pat_thonon

Intersting

How much for the 11.5 cr.

Thanks,

Pat

cscrogham

$1900 for the stock set or $2400 for the sprint set. They both came out of running engines when "houred" out for pro racing. All Porsche Motorsport stuff; cylinders, pistons, rings, I even think all the keepers are there as a complete set! Let me see if I can find a photo.

cscrogham

This is the $1900 used set with 35 hours. The "worst" piston is shown in the photo, all very usable again with some cleaning, etc.

cscrogham

This is the sprint set with higher CR, chamfered cylinders, less hours.

cscrogham

Forgot to mention, the sprint set will also accept up to 54mm valve, much larger valve relief as you can see. These are for the 993 engine with the narrow con rod. FYI I have the heads and cams that go with the sprint pistons if you are really going crazy. Made 408hp back in the day...

pat_thonon

Are both set are for 993 connecting rods? I have a 964 motor.
The "lower" compression set is definitively interesting for my street application.

Pat

cscrogham

The 964 rod will be too wide for this piston, as much as I would like to sell something, this is not for your application unless you have a 993 (or Carrillo, etc) con rod. Sounds like you need to keep your engine as stock as possible and not stray too far in this direction. These parts are more for the diehard Motorsport or RSR enthusiast!

pat_thonon

Thanks, really appreciate your honesty. I am definitly not in the motorsport league...more a sunday mechanic guy that need to rebuilt is engine and want to upgrades in a "will i am there" fashion.

Sorry to have waste your time
Pat

cscrogham

Not a waste of time at all, good luck!

bosoxfan

What is the power difference between the stock 3.6 and the 3.8 RSR internals?

cscrogham

The bottom end components are mainly for longevity, not so much for power gains. The power is mostly in airflow through the heads with better cams, induction, etc.

cscrogham

If you are asking about HP differences, a stock engine is around 250, the standard 3.8 RSR is 380 and the sprint version over 400.