porsche 928 RI

jw what the 0-60 time would be on an 86.5 us auto with an x pipe and EZF'r chip would be? big improvement over stock?

Kevin Michael

5.9

pcar928fan

Doubt 5.9... 6.3 is more my guess... of course seat of the pants probably can't tell the difference between 5.9 and 6.3 anyway...

Landseer

Curious, Porken LH/EZ chipset with S4 fuel pressure regulator?

James-man

Stock should be able to do a 6.3. Why is sub 6 doubtful?

danglerb

Stock a 86 5 spd was reported as 6.3 sec, auto is 6.8 sec. Cutting out .8 seconds takes more power than a X pipe and chips.

smudaaar

it also depends a lot on tire size and brake torque......is this on a drag strip or street?

James-man

Ah, I missed the word "auto". Yes, a 5.9 is most definitely doubtful.

Danglerb you are good with details and have exhibited tremendous courtesy and eagerness to help your brethren lately. Thank you for coming back to the forum!

PorKen

Stock Porsche figures are with two aboard, half tank of gas, etc.

danglerb

Even at a drag strip, even with fancy tires, ET isn't going to drop much for an automatic. The 1950 rpm stall of the stock torque converter controls most of the launch behavior. Its how the clutch with slower shifting gets the edge that it does from much more aggressive launches.

pcar928fan

Exactly... go read the tech spec manual guys and then learn about power requirements for improving times for drag racing AND road racing for that matter too... then lets talk some more. Auto S4's are listed at 6.5s 0-60.

porsche 928 RI

it would be on the street with 255's on the back in the R&T book i have it claims 6.3 for the auto, i kinda figured it would be a little better with 300rwhp after the mods

porsche 928 RI

i found it here too
http://www.928.org.uk/resources/75-i...rformance.html

danglerb

.uk means United Kingdom, as in Euro S2 which is a hot rod 16v with 310 stock hp, and the auto as I see it is still listed as 6.7 seconds.

Rodent Track was known for odd bits of speed data compared to other sources.

goodspeed928

I had that setup in my 86.0
On a cool day, maybe 6 flat.