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Jan 20, 2015 18:55:49 GMT
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Does anyone know if the CROWN wheel and pinion in a mk2 Granada diff can be changed to something from say a Sierra? I need to bring the ratio down. Either that or does anyone know the diff ratio for a 2.1 td mk2 Granada?
Cheers
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mk2cossie
Club Retro Rides Member
Posts: 2,946 
Club RR Member Number: 77
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Mk2 Granada diffmk2cossie
@mk2cossie
Club Retro Rides Member 77
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Jan 20, 2015 21:25:39 GMT
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If you can wait til tomorrow I can have a look in my ford manual and see what variants they came with and had the options of  |
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Jan 20, 2015 21:27:09 GMT
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Cheers dude much appreciated!
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mk2cossie
Club Retro Rides Member
Posts: 2,946
Club RR Member Number: 77
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Mk2 Granada diffmk2cossie
@mk2cossie
Club Retro Rides Member 77
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Jan 21, 2015 13:31:15 GMT
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well, the X denotes an optional fit apparently, but my 2.8 auto had a 3.45 in it instead of the 3.64  Hope this is some help for you though  |
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Jan 21, 2015 16:03:47 GMT
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Cheers. So the lowest is a 3.45?
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bortaf
Posted a lot
Posts: 4,549
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Jan 21, 2015 18:49:47 GMT
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lowest is a 4.11, 3.45 is the highest, the lower the number the higher the diff ratio is as it's an input ratio not an output ratio  Have an ask on ovalchat, that's about the only place you'll find Mk2 parts nowdays ? If you don't fancy joining i can ask for you if you decide what ratio your after ? The good thing is the diff will survive a race and so be salable after use (hense usually cheaper) |
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R.I.P photobucket
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mk2cossie
Club Retro Rides Member
Posts: 2,946
Club RR Member Number: 77
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Mk2 Granada diffmk2cossie
@mk2cossie
Club Retro Rides Member 77
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Jan 21, 2015 18:50:04 GMT
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Yup, and ive no idea as to whether or not you can bolt the CROWN wheel and pinion from a Sierra diff in the mk2 casing. I do know that the 7.5inch diff the mk3 granada has a different size diff though Theres a dutch guy with a 351w powered mk2 and I believe he has fitted a bmw diff, he even had the luck that the cv joints bolted up to the output flanges on that |
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Jan 21, 2015 22:29:18 GMT
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The ideal diff ratio for me is 2.35 as thats what the bmw 530d had but i know I'm not going to get anything like that from a ford.
Ill look on the net to see if i can find anything about this bmw diff swap.
cheers
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mk2cossie
Club Retro Rides Member
Posts: 2,946
Club RR Member Number: 77
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Mk2 Granada diffmk2cossie
@mk2cossie
Club Retro Rides Member 77
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Jan 23, 2015 13:41:38 GMT
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what's the diff ratios for the BMW gearbox? Don't forget that the Granny has a smaller rolling radius of wheel compared to the 5series. Although with the 3.64 diff and a .75 overdrive on the ford box I see 75 on the clock at 3000rpm (at least that's what I seem to remember it being) |
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Yup, and ive no idea as to whether or not you can bolt the CROWN wheel and pinion from a Sierra diff in the mk2 casing. I do know that the 7.5inch diff the mk3 granada has a different size diff though Theres a dutch guy with a 351w powered mk2 and I believe he has fitted a bmw diff, he even had the luck that the cv joints bolted up to the output flanges on that I'm still looking into sorting the ratios out. Do you have a link for any info on the guy with the BMW diff or which one he used? Is there anywhere that would make me a CROWN wheel and pinion for my application or does anyone know of any other 8 bolt CROWN wheel and pinioned that might fit my diff? |
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mk2cossie
Club Retro Rides Member
Posts: 2,946
Club RR Member Number: 77
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Mk2 Granada diffmk2cossie
@mk2cossie
Club Retro Rides Member 77
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Ive no idea at the mo, as the link to 351rs built thread on gatebil site is on the ancient laptop at home I do know that the diff he was going to use was almost the same length as the mk2 Granada, and the output flanges were the same position and stud pattern for his cv joints. |
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