Euro SC Differences

[Yorkie]

I have a'79 German market SC and I was wondering if the motor or gearing is different from a Californian SC as I had one of those a couple of years ago and the Euro SC seems quicker. I've tried to search the forums but "SC" seems to cause problems.
Thanks,
Kevin

[Aurel]

Do a search for ROW. Row SCs have more power (204 vs 184 if memory serves me) because of higher CR and less emissions restrictions.

Aurel

[Bill Verburg]

Originally Posted by Yorkie

I have a'79 German market SC and I was wondering if the motor or gearing is different from a Californian SC as I had one of those a couple of years ago and the Euro SC seems quicker. I've tried to search the forums but "SC" seems to cause problems.
Thanks,
Kevin

My79
RoW use 930.03
US 49 state use 930.04
US Cal. use 930.06
All are rated the same 180hp@5500, but .03 189ft-lbs@4200 while .04 & .06 are 175ft-lbs@4200

all have 8.5 cr

.03 max 6800+/- 200 governede by ignition cutoff, .04 & .06 max 6700+/- 300 governed by fuel pump cutoff

all use the same 915/61 trans

[livi]

Bill is the guru, but I just seem to remember that the 78 SC had 180 bhp but already the next model - 79 - got 188 in Europe. Or was it in 1980 first ?

[PeterRT]

Yes, the 930/09 came for the 1980 MY.

[Bill Verburg]

Originally Posted by livi

Bill is the guru, but I just seem to remember that the 78 SC had 180 bhp but already the next model - 79 - got 188 in Europe. Or was it in 1980 first ?

My80 RoW SC uses 930.09 8.6cr, 188hp@5500, 189ftlb@4200, 915/62(same gearing as 915/61 except taller 5)

My81-83 RoW SC uses 930.10 9.8cr, 204hp@5900, 190ftlb@4300, 915/62(same gearing as 915/62)

[911Freak]

Am I missing something?

According to my COA and engine #'s when imported in 1988

My Row '81 SC Row came with engine# 6312077

930/10 - 204hp@5900 rpm & 268 ftlb@4300

9:8 cr
Trans: 915/62 #7312290

am I missing something in this thread?

[Bill Verburg]

Originally Posted by 911Freak

Am I missing something?

According to my COA and engine #'s when imported in 1988

My Row '81 SC Row came with engine# 6312077

930/10 - 204hp@5900 rpm & 268 ftlb@4300

9:8 cr
Trans: 915/62 #7312290

am I missing something in this thread?

MY81 engine# 6312077
6 - 6cyl
3 - 911SC RoW 3L, 150kW, 204 hp
1 - MY81
2077 - consecutive serial #

930.10 9.8cr
hp\DIN 70020 204hp@5900 = 150kW = SAE net J 245 145kW/195hp
torque\ DIN 70020 267NM@4300/ 27kpm = SAE J 245 258NM/190ft-lb


MY81 trans# #7312290
7 - 6cyl
3 - 5 spd
1 - MY81
2290 - consecutive serial #
915/62 8:31cwp
11/35 18/33 23/29 26/26 28/22

[911Freak]

Thanks Bill! Any idea if the Trans is a LSD? I leave dual black marks when the tyres break loose. I know there should be a /12 following the 615/62, but the tab was machines or ground on a speed bump and really can't read it...


Thanks again for your wealth of knowledge!

BTW I have another 3.0 & 915:
#6402814 that's a 930/07 right? any worries about this engine?
And another 915 too: 915/62xxx (unledgable) #; 731 0964

Is the 3.0 #6402814 a good starting place to build a nice EFI 3.2l? ( 98mm, 9:8.5 cr,)
Does this engine have the larger valves some of the older ones do?

Again, thanks for you wealth of knowledge!!!!!

[Bill Verburg]

Any idea if the Trans is a LSD?

to tell if a 915 has an lsd raise the rear and spin a tire by hand, if the other side spins the same way there is a functioning lsd.

#6402814 that's a 930/07 right?

Yes, 930.07 MY80 US/Cdn. 3l SC. All SCs hve the same 49/41.5mm valves and cams. The difference was in port size and cam timing. MY78-79 have 39/35mm ports, MY80 up have 34/35mm ports. Bigger isn't always better. It would depend on how the heads interface w/ any replacement cams, EFI and gearing

[constaf]

Gentlemen,

I currently race a 1980 Weissach edition in PCA club racing as D stock. I am thinking of going to E stock next year by rebuilding the motor as a 81-83 ROW. Are the trannys the same? Or will I have to change some gears in order to show up as ROW stock?

Thanks

[Bill Verburg]

Originally Posted by constaf

Gentlemen,

I currently race a 1980 Weissach edition in PCA club racing as D stock. I am thinking of going to E stock next year by rebuilding the motor as a 81-83 ROW. Are the trannys the same? Or will I have to change some gears in order to show up as ROW stock?

Thanks

'80 US used 915/63 5th is 28/23(.821 OD)
'81 - 83 RoW used 915/62 5th is 28/22(.7857 OD)

the only difference in gearing is in 5th as noted above, the USA version is a noted shorter geared