Swalsey
Member
Hi
I've been mulling over the facts trying to make a decision and put this together - thought I'd post it up in case others have found themself endlessly looking through pages of the main thread here http://www.a2oc.net/forum/showthread.php?t=11914 .
Table from Mike on engine speeds
mph / 0.756 / 0.700 / 0.681 / 0.650 / 0.625
70 2575 2383 2318 2180 2127
60 2205 2042 1987 1867 1822
50 1838 1703 1655 1555 1520
40 1470 1360 1325 1245 1215
30 1103 1020 995 935 912
Reduction in engine revs over standard 75hp
mph / 0.756 / 0.700 / 0.681 / 0.650 / 0.625
70 2575 192 257 395 448
60 2205 163 218 338 383
50 1838 135 183 283 318
40 1470 110 145 225 255
30 1103 83 108 168 191
Rolling road data courtesy of Will here: http://www.a2oc.net/forum/showthread.php?t=12702&page=2
rpm / torque base / torque remap / power base / power remap
1500 / 100 / 100 / 29 / 29
2000 / 160 / 200 / 61 / 76
2500 / 160 / 190 / 76 / 90
3000 / 130 / 180 / 74 / 103
3500 / 110 / 160 / 73 / 107
4000 / 110 / 140 / 69 / 107
Prices
The prices for the ratio sets have increased by 2.5%, so the new prices are:
0.622 ratio - £85.11 & £62.87 = £151.68
0.659 ratio - £86.79 & £76.11 = £166.97
0.681 ratio - £123.74 & £69.60 = £198.17
2nd hand 90hp 0.7 cogs suggested price:
(quoting Mike's posts in group buy thread, post 196)
I can suggest is that the new prices are £90.22 & £143.47, so a 50% reduction would not be unreasonable, taking the total price to £116.85.
It's really for 90PS owners to set their own rates though - I know that I'd rather keep hold of the old ratios just in case, as opposed to underselling them.
Mike's fitting costs:
I'd estimate fitting costs to be around £80 plus parts (so add on for transmission oil and possibly a new gasket - I'll advise better when I've done mine), or you can supply your own oil if you prefer (2 litres will be needed).
Power/torque curves from riverlad here:
http://www.a2oc.net/forum/showpost.php?p=94262&postcount=17
and Mike's graph here:
Thank to all the contributors on the topic!
I've been mulling over the facts trying to make a decision and put this together - thought I'd post it up in case others have found themself endlessly looking through pages of the main thread here http://www.a2oc.net/forum/showthread.php?t=11914 .
Table from Mike on engine speeds
mph / 0.756 / 0.700 / 0.681 / 0.650 / 0.625
70 2575 2383 2318 2180 2127
60 2205 2042 1987 1867 1822
50 1838 1703 1655 1555 1520
40 1470 1360 1325 1245 1215
30 1103 1020 995 935 912
Reduction in engine revs over standard 75hp
mph / 0.756 / 0.700 / 0.681 / 0.650 / 0.625
70 2575 192 257 395 448
60 2205 163 218 338 383
50 1838 135 183 283 318
40 1470 110 145 225 255
30 1103 83 108 168 191
Rolling road data courtesy of Will here: http://www.a2oc.net/forum/showthread.php?t=12702&page=2
rpm / torque base / torque remap / power base / power remap
1500 / 100 / 100 / 29 / 29
2000 / 160 / 200 / 61 / 76
2500 / 160 / 190 / 76 / 90
3000 / 130 / 180 / 74 / 103
3500 / 110 / 160 / 73 / 107
4000 / 110 / 140 / 69 / 107
Prices
The prices for the ratio sets have increased by 2.5%, so the new prices are:
0.622 ratio - £85.11 & £62.87 = £151.68
0.659 ratio - £86.79 & £76.11 = £166.97
0.681 ratio - £123.74 & £69.60 = £198.17
2nd hand 90hp 0.7 cogs suggested price:
(quoting Mike's posts in group buy thread, post 196)
I can suggest is that the new prices are £90.22 & £143.47, so a 50% reduction would not be unreasonable, taking the total price to £116.85.
It's really for 90PS owners to set their own rates though - I know that I'd rather keep hold of the old ratios just in case, as opposed to underselling them.
Mike's fitting costs:
I'd estimate fitting costs to be around £80 plus parts (so add on for transmission oil and possibly a new gasket - I'll advise better when I've done mine), or you can supply your own oil if you prefer (2 litres will be needed).
Power/torque curves from riverlad here:
http://www.a2oc.net/forum/showpost.php?p=94262&postcount=17
and Mike's graph here:
Thank to all the contributors on the topic!
Last edited: