senna_T Forged Member Lifetime Members 15,818 Member For: 18y 3m 16d Gender: Male Location: SW Sydney Posted 13/02/08 02:46 AM Share Posted 13/02/08 02:46 AM well when its done its gonna be individual!Those diff gears may actually get you some sort of usable rpm, I'll be interested to see how this turns out! Link to comment https://www.fordxr6turbo.com/forum/topic/42560-gt42r-approx-spool-rpm/page/5/#findComment-633641 Share on other sites More sharing options...
ltd351t Member 21 Member For: 17y 3m 12d Posted 13/02/08 02:56 AM Author Share Posted 13/02/08 02:56 AM Yeah the 3.0 to 1 in it now should be ok to start with, I have a 3.5 full spool centre and some 31 spline axles so if I was ever going to drag the car it wouldn't be a problem. These cars are much lighter than the BA/F so even 3.25 would be very fast, 3.0 is just a bit harder on the box. Link to comment https://www.fordxr6turbo.com/forum/topic/42560-gt42r-approx-spool-rpm/page/5/#findComment-633646 Share on other sites More sharing options...
RSWEPN Donating Member Donating Members 187 Member For: 18y 6m 28d Gender: Male Location: Sydney Posted 15/02/08 01:02 AM Share Posted 15/02/08 01:02 AM it wont be too bad, im running a gt35/66 on a stock n/a BA motor and making 275rwkw on 11psi(yes I know power is low but ah well) went from a 2k convertor to a 4k convertor, yet to drive with 4k stall but should be fine. Dont stress over the big turbo, mines going gt45 and will still be a street driven car...I rev mine to 6k and its a n/a motor and rods are still in the block...new motor will be reving to 7k. Link to comment https://www.fordxr6turbo.com/forum/topic/42560-gt42r-approx-spool-rpm/page/5/#findComment-634437 Share on other sites More sharing options...
ltd351t Member 21 Member For: 17y 3m 12d Posted 15/02/08 03:12 AM Author Share Posted 15/02/08 03:12 AM RSWEPN said: it wont be too bad, im running a gt35/66 on a stock n/a BA motor and making 275rwkw on 11psi(yes I know power is low but ah well) went from a 2k convertor to a 4k convertor, yet to drive with 4k stall but should be fine. Dont stress over the big turbo, mines going gt45 and will still be a street driven car...I rev mine to 6k and its a n/a motor and rods are still in the block...new motor will be reving to 7k.yeah it should turn out ok. Link to comment https://www.fordxr6turbo.com/forum/topic/42560-gt42r-approx-spool-rpm/page/5/#findComment-634493 Share on other sites More sharing options...
Headsex Donating Members 2,528 Member For: 19y 9m 12d Gender: Male Location: Melb Posted 15/02/08 04:40 AM Share Posted 15/02/08 04:40 AM I think what you will find.. Having a big turbo, the torque curve is moved up higher in the RPM (DUH).. and in doing that dont beat on the rods as hard as if would if the torque curve is brought down in the RPM.. So You may find that the rods can make bigger power given the fact there's less torque lower in the RPM.It will be interesting to see how it goes either way Link to comment https://www.fordxr6turbo.com/forum/topic/42560-gt42r-approx-spool-rpm/page/5/#findComment-634530 Share on other sites More sharing options...
RAP1D Member Donating Members 3,739 Member For: 19y 4d Gender: Male Location: Sydney NSW Posted 15/02/08 12:25 PM Share Posted 15/02/08 12:25 PM Im with you on the rods theory Danny... less pressure down low is safer on the rods Link to comment https://www.fordxr6turbo.com/forum/topic/42560-gt42r-approx-spool-rpm/page/5/#findComment-634730 Share on other sites More sharing options...
turbotrana Member 2,586 Member For: 22y 1m 23d Gender: Male Posted 16/02/08 04:54 AM Share Posted 16/02/08 04:54 AM if you can build a turbo exhaust manifold like the one in the white Falcon then just do it with that turbo and worry about stall speed later. Link to comment https://www.fordxr6turbo.com/forum/topic/42560-gt42r-approx-spool-rpm/page/5/#findComment-634924 Share on other sites More sharing options...
RAP1D Member Donating Members 3,739 Member For: 19y 4d Gender: Male Location: Sydney NSW Posted 03/11/08 07:30 AM Share Posted 03/11/08 07:30 AM Any results yet? Link to comment https://www.fordxr6turbo.com/forum/topic/42560-gt42r-approx-spool-rpm/page/5/#findComment-761422 Share on other sites More sharing options...
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