TheSamba.com :: View topic

Fri Aug 01, 2025 8:42 am

For a single cab.... Any feedback is appreciated...

Engine Build Specs
• 20 line bore Brazil case
• Welded behind #3
• Piston squirters
• Full flow oiling
• Shuffle pins
• Balanced rotating assembly
• New CB Performance 86mm crankshaft
• German lightened flywheel
• 1 1/2” chromoly gland nut
• New 5.500” I-beam rods
• Steel backed main bearings
• Double thrust cam bearings
• Clevite rod bearings
• Engle EK8 camshaft
• SCAT lifters
• Straight cut timing gears
• 1 1/2 quart oil sump
• Shaded oil pump w/ full flow cover
• Reconditioned & balanced Mahle 94mm pistons & liners
• Grant file fit piston rings
• OEM VW 1.25 ratio rockers on bolt together shafts
• W/ elephant feet adjusters
• CB Performance manton chromoly push rods
• CB Performance precision rod tubes
• Cylinder Heads
• Genuine VW 044 castings
• Ported and polished by SCS (Small Car Specialties)
• 40x35.5 stainless steel valves
• Dual valve springs
• Chromoly retainers
• 12mm spark plug holes
• Rebuilt by Jeff Denham
• 3/8” stainless steel valve covers w/ tabs for gaskets and breather box vents
• 9.3:1 compression ratio

Fri Aug 01, 2025 8:52 am

I happen to be building a 2387 for a baywindow. I went with a CB alloy case machined for their all type 4 main crank. Went with that crank for the added strength. Got a 6lb ? crank pulley to offset the 13lb lighter flywheel that goes with those cranks. 5.7 on the rods which will give an almost perfect deck height and stock width. I've yet to buy the heads but 40mm intake valves is a bit small for the displacement. 1 5/8 on the exhaust.

Fri Aug 01, 2025 8:54 am

Because of the big displacement, the small valves, and short valve lift, I am guessing it will quite pulling about 5500rpm.

To get your 9.3cr, and keep a correct .045" deck height, you are going to need a 64cc chamber volume, which is big. Old 044's were usually around 55cc.

You might be better off with some new heads. They would solve a few different issues all at once. Some Tims S2's or so would get you the bigger valves to take advantage of the displacement and the bigger cam, and they can also be built with a proper 64cc chamber.

I would skip the Scat lifter's and use Engle lifters to match the cam, or a set of lightweight Thorsten Pieper tool steel lifters.

Brian

Fri Aug 01, 2025 8:57 am

94touring wrote: 5.7 on the rods which will give an almost perfect deck height and stock width, WHEN USING "C" HEIGHT PISTONS.....

Fri Aug 01, 2025 9:17 am

Brian_e wrote: 94touring wrote: 5.7 on the rods which will give an almost perfect deck height and stock width, WHEN USING "C" HEIGHT PISTONS.....

Thanks for the correction! Meant to say Icon C height pistons!