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KTL KTL is offline
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Join Date: Sep 2000
Location: Frankfort IL USA
Posts: 16,643
Henry,

Sorry my short questions may have come across the wrong way. Reason I asked about the crank choice wasn't to jab you for using a basic 3.0L crank. I just happened to notice that your list of components didn't state what crank you were using for this application. Didn't mean to imply, "hey what the hey, why aren't you using a Supercrank?"

Reason I asked about the 3.0L lightweight Pauter rods was also to see if you went that route, since I thought you might be building another screamer like the recent 3.1SS thread The shuffle pinning and center lube cams had me thinking you are going for high RPM capability.

Also asked about the rod lengthening via the offset pin bore to see if you wanted to get that better rod length-stroke ratio you've mentioned before, to take advantage of the lighter Carrera JE pistons and again serve the purpose of being easier to achieve high rpms. Was considering doing that for my motor.

Reason I ask the above isn't to critique your build choices. I'm still on the fence with my re-rebuild of the racecar engine to either 3.0 or 3.2SS. Time to _____ or get of the pot and select my rods & pistons since i'm sticking with a 9 bolt 70.4 crank. The previous 3.2SS was a baffling choice of:

std 3.0L crank (no complaint)
typ 3.0L Pauter SC rods but w/bored pin end for 23mm pins (nice rods!)
98mm Mahle Motorsport 9.8:1 carb/MFI Carrera comp height pistons (nice pistons, wrong pin height)
Bored & replated SC cyls (typically not a good idea)
Loooooong deck height of ~2.4mm (why?)
Single plug (odd, considering it uses Electromotive crankfire already- just add another board & plug holes)
Leaded race gas w/46mm Webers

Have no idea why that configuration was built. So, last go-around I made a traditional 3.2SS with "correct" rods (reconditioned Pauters w/new 22mm pin bushes) and new 10.5:1 98mm JE w/SC pin height, added some extra spark plugs. Then I somehow wasted all the bearings (except intermediate shaft- weird) & that took out 1 rod, scoring all of the crank, oil pump, pistons, cylinders, cams, cam housings. Big mess.

Sorry for the interrupt/comparison. Just bouncing around some ideas in my head about where to go with mine & of course you've got some lengthy experience with skinning the 3.2SS cat in various ways.
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Kevin L
'86 Carrera "Larry"
Old 05-28-2013, 12:07 PM
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