Joey Thorne Donating Members 33 Member For: 13y 5m 5d Posted 15/01/12 07:18 AM Share Posted 15/01/12 07:18 AM At 110 kph my ba xr6 turbo is sitting on 2800rmp, 5 gear on cruise control, This is to high isnt it? Link to comment https://www.fordxr6turbo.com/forum/topic/78531-are-my-rpm-to-high/ Share on other sites More sharing options...
MX Dave Donating Members 545 Member For: 14y 2m 8d Gender: Male Posted 15/01/12 07:23 AM Share Posted 15/01/12 07:23 AM Sounds right to me. ( from memory ) Link to comment https://www.fordxr6turbo.com/forum/topic/78531-are-my-rpm-to-high/#findComment-1181166 Share on other sites More sharing options...
Paulie2256 Donating Members 7,441 Member For: 16y 6m 23d Gender: Male Location: SE Melbourne Posted 15/01/12 07:24 AM Share Posted 15/01/12 07:24 AM Sounds about right. Link to comment https://www.fordxr6turbo.com/forum/topic/78531-are-my-rpm-to-high/#findComment-1181167 Share on other sites More sharing options...
Joey Thorne Donating Members 33 Member For: 13y 5m 5d Posted 15/01/12 07:28 AM Author Share Posted 15/01/12 07:28 AM cheers, I appreciate the help! Link to comment https://www.fordxr6turbo.com/forum/topic/78531-are-my-rpm-to-high/#findComment-1181174 Share on other sites More sharing options...
bcl Toughest BA Turbo Lifetime Members 3,408 Member For: 22y 5m 20d Gender: Male Location: Sydney Posted 15/01/12 10:20 PM Share Posted 15/01/12 10:20 PM The T5 box has a 0.73 5th gear ratio.The BA diff has 3.46 ratio.At 110kph you will be doing around 2300 rpm in 5th gear.You would need to drop in a 4.10 diff to get around 2800rpm. There are a number BA's that had this done.Brian Link to comment https://www.fordxr6turbo.com/forum/topic/78531-are-my-rpm-to-high/#findComment-1181354 Share on other sites More sharing options...
Paulie2256 Donating Members 7,441 Member For: 16y 6m 23d Gender: Male Location: SE Melbourne Posted 15/01/12 11:40 PM Share Posted 15/01/12 11:40 PM That post above just made me go outside and check. I don't really pay attention to what revs the car is doing but remember the position of the needle. 2800 is too high. Mine sits on 2000 with 6spd manual. Link to comment https://www.fordxr6turbo.com/forum/topic/78531-are-my-rpm-to-high/#findComment-1181372 Share on other sites More sharing options...
bcl Toughest BA Turbo Lifetime Members 3,408 Member For: 22y 5m 20d Gender: Male Location: Sydney Posted 15/01/12 11:48 PM Share Posted 15/01/12 11:48 PM 6 speed manual is different.The T56 box has a 0.62 6th gear ratio.The BF diff has 3.73 ratio.At 110kph you will be doing around 2100 rpm in 6th gear.By comparison with a BF 6-speed ZFThe ZF box has a 0.69 6th gear ratio.The BF diff has 2.73 ratio.At 110kph you will be doing around 1700 rpm in 6th gear.Brian Link to comment https://www.fordxr6turbo.com/forum/topic/78531-are-my-rpm-to-high/#findComment-1181374 Share on other sites More sharing options...
Ralph Wiggum Moar Powar Babeh Lifetime Members 19,332 Member For: 19y 8m 21d Gender: Male Location: Perth Posted 16/01/12 12:05 AM Share Posted 16/01/12 12:05 AM On 15/01/2012 at 10:20 PM, bcl said: You would need to drop in a 4.10 diff to get around 2800rpm. There are a number BA's that had this done.Brian+1 too Brian's comment. 4.09 (closet you'll get too 4.11 in a ute diff) and a T56 with close ratio 1st/2nd/3rd was fantastic on the street. Was woeful when I removed the t56 and fitted a t5 too sell it.Joey, I hope your cars not a purple ute and you dont live in Perth........ 1 Link to comment https://www.fordxr6turbo.com/forum/topic/78531-are-my-rpm-to-high/#findComment-1181377 Share on other sites More sharing options...
CBXRT Banned 643 Member For: 14y 6m 22d Gender: Male Posted 16/01/12 12:15 AM Share Posted 16/01/12 12:15 AM (edited) No idea of the other boxes, but my old BAT does 110 at 2300 in 4th (top) - so how a manual with a 5th gear could be 500rpm higher doesnt sound right? Just applying a simple common-sense approach, happy to be corrected by those with more knowledge! Edited 16/01/12 12:16 AM by CBXRT Link to comment https://www.fordxr6turbo.com/forum/topic/78531-are-my-rpm-to-high/#findComment-1181379 Share on other sites More sharing options...
Dillz Three pedals are better then two.. Donating Members 15,637 Member For: 18y 19d Gender: Male Location: Melbourne Posted 16/01/12 12:19 AM Share Posted 16/01/12 12:19 AM As Brian said it's too high, you want it off boost in top gear cruising or you will be unnecessarily burning more fuel then needed. Should be about 2100 at 100 from memory. Link to comment https://www.fordxr6turbo.com/forum/topic/78531-are-my-rpm-to-high/#findComment-1181380 Share on other sites More sharing options...
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