» Site Navigation | | » Recent Threads | | | | | | | | 02-05-2004, 06:53 AM | #1 | Senior Member Join Date: Jun 2003 Location: Littleton, CO Posts: 190 | Hey I would like to know where you could get some 8 to 1 or 8.5 to 1 compression pistons for the 318ti. The Ti stock has 10 to 1 compression. I am thinking about a rebuild with possibly a Turbo. If I run the 8:1 compression I can run a little more boost and get more power out of the car. __________________ Custom Cold Air Intake, Custom IAT controller, SuperSprint Exhaust, High Flow CAT, Long Tube Header, H&R 'Race' Lowering springs, Short Shifter, JB Racing Lightweight Flywheel, M3 Clutch Kit w/Rogue Semi-Metalic Disk, Zex Nitrous System, Euro Clear Corners, Elipsoid Headlights w/Halos, Eyebrows, Window Tinting, Invisible Bra | | | 02-05-2004, 01:51 PM | #2 | Member Join Date: Oct 2003 Location: Arlington, TX Posts: 35 | | | | 02-11-2004, 12:31 AM | #3 | Junior Member Join Date: Oct 2003 Location: Orange County, CA Posts: 25 | What parts do you need to replace in order to do the cylinder swap. Ive been thinking about doing it for some time now but dont want to have any surprises on the weekend and have all the shops closed. __________________ Current: 95 turbo 318ti Previous: 98 M3 4dr 94 318is | | | 02-11-2004, 05:24 AM | #4 | Senior Member Join Date: Jun 2003 Location: Littleton, CO Posts: 190 | I am stilll checking into everything, but basicly a set of gaskets (I am trying to track down a Copper Head gasket, to take the pressure from a Turbo), you will need to get the Pistons and Rings, you should be able to use the rods that you have. While you are in there you might as well replace the bearings. In general check everything else out. Basicly you are rebuilding the engine. __________________ Custom Cold Air Intake, Custom IAT controller, SuperSprint Exhaust, High Flow CAT, Long Tube Header, H&R 'Race' Lowering springs, Short Shifter, JB Racing Lightweight Flywheel, M3 Clutch Kit w/Rogue Semi-Metalic Disk, Zex Nitrous System, Euro Clear Corners, Elipsoid Headlights w/Halos, Eyebrows, Window Tinting, Invisible Bra | | | 02-11-2004, 06:23 PM | #5 | Junior Member Join Date: Oct 2003 Location: Orange County, CA Posts: 25 | Keep me posted on what you find out. This is what a "Analog Kid" posted on Bimmerforums.com: Depends on what Octane you plan on using. 8:1 provides a large window for tuning, but since you lack (displacement), "lag" may come into play, but again, the ball bearing turbo will make it very short. I would reveiw and verify the compressor maps for that turbo.... Look into: -Forged Connecting rods, as they will take a beating @20psi, if you havent already. -An IC designed to be efficent at 20psi (2.36 pressure ratio...is alot..) -@ 20 psi, if you really do plan to run that much...youll need a strong headgasket and some head studs. -You will defintely need to feed it fuel to feed that beast. -Hell, kiss your clutch, tranny and rear drive goodbye now __________________ Current: 95 turbo 318ti Previous: 98 M3 4dr 94 318is | | | | Currently Active Users Viewing This Thread: 1 (0 members and 1 guests) | | Thread Tools | | Display Modes | Linear Mode | Posting Rules | You may not post new threads You may not post replies You may not post attachments You may not edit your posts HTML code is Off | | | Similar Threads | Thread | Thread Starter | Forum | Replies | Last Post | 15mm pad install problem | hotdog19d | Suspension | 11 | 04-29-2005 04:42 AM | |