kris 44 Posted May 6, 2009 Share Posted May 6, 2009 i am looking for the best way and cheapest way to change diff ratios as i am looking for 5.8 and 6.1 and 5.2 diff gears.So i am thinking it would be best to put a ford 9 inch in her but will it fit. Link to comment https://www.sau.com.au/forums/topic/268636-9-inch-diff-for-a-r33-can-it-be-done/ Share on other sites More sharing options...
PM-R33 Posted May 6, 2009 Share Posted May 6, 2009 You think a Ford 9" is going to bolt straight in..... Am i reading this right? You want to go from 4.11 diff gears to 5.8 diff gears? What the hell are you trying to do? Link to comment https://www.sau.com.au/forums/topic/268636-9-inch-diff-for-a-r33-can-it-be-done/#findComment-4576986 Share on other sites More sharing options...
craked Posted May 6, 2009 Share Posted May 6, 2009 yes it can be done but it does cost a fare bit Link to comment https://www.sau.com.au/forums/topic/268636-9-inch-diff-for-a-r33-can-it-be-done/#findComment-4577389 Share on other sites More sharing options...
zebra Posted May 6, 2009 Share Posted May 6, 2009 Going from an IRS rear end to a 4 link rear end is not gonna be cheap. Im rather Puzzled as to why you would want a 6:1 diff ratio in anything. Link to comment https://www.sau.com.au/forums/topic/268636-9-inch-diff-for-a-r33-can-it-be-done/#findComment-4577660 Share on other sites More sharing options...
Race__24 Posted May 6, 2009 Share Posted May 6, 2009 Tractor pulling perhaps? You could just use a lower gear 1 Link to comment https://www.sau.com.au/forums/topic/268636-9-inch-diff-for-a-r33-can-it-be-done/#findComment-4577761 Share on other sites More sharing options...
turboedsloth Posted May 6, 2009 Share Posted May 6, 2009 or buy a tractor Link to comment https://www.sau.com.au/forums/topic/268636-9-inch-diff-for-a-r33-can-it-be-done/#findComment-4577986 Share on other sites More sharing options...
GTR1993 Posted May 6, 2009 Share Posted May 6, 2009 You dont have to go solid rear to get a 9" in there... http://www.harrop.com.au/root_folder/drive...hsg2525-00.html Link to comment https://www.sau.com.au/forums/topic/268636-9-inch-diff-for-a-r33-can-it-be-done/#findComment-4578076 Share on other sites More sharing options...
PM-R33 Posted May 6, 2009 Share Posted May 6, 2009 (edited) I still want to know the answer to my question as why he wants such crazy diff gear ratios. The top speed of the car would be like 170km/h.... Edited May 6, 2009 by PM-R33 Link to comment https://www.sau.com.au/forums/topic/268636-9-inch-diff-for-a-r33-can-it-be-done/#findComment-4578743 Share on other sites More sharing options...
kris 44 Posted May 6, 2009 Author Share Posted May 6, 2009 (edited) Guys you can get a ford 9 inch irs diff. And i will need 5.8 and 6.1 gears becouse i am runnig a bert gear box so i will be runnig in top gear not 2nd or 3rd it is alot cheaper in speedway to go bert gear box then buy a really good light fly wheel and clutch and then keep replaceing gear boxs as you blow them Edited May 6, 2009 by kris 44 Link to comment https://www.sau.com.au/forums/topic/268636-9-inch-diff-for-a-r33-can-it-be-done/#findComment-4579030 Share on other sites More sharing options...
zebra Posted May 7, 2009 Share Posted May 7, 2009 it takes a fair bit to blow a standard rb25det gearbox Link to comment https://www.sau.com.au/forums/topic/268636-9-inch-diff-for-a-r33-can-it-be-done/#findComment-4580466 Share on other sites More sharing options...
ydr030 Posted May 7, 2009 Share Posted May 7, 2009 omg. Link to comment https://www.sau.com.au/forums/topic/268636-9-inch-diff-for-a-r33-can-it-be-done/#findComment-4580689 Share on other sites More sharing options...
Duncan Posted May 8, 2009 Share Posted May 8, 2009 one of the nissan vans runs an r200 with a high ratio (serena? espace?), there was a thread recently. It was about 4.9 I think. Or maybe a custom pinion gear with the right ratio? r200 is a very strong diff, and if you did actually have trouble with it (unlikely on dirt) there is always r220 out of 300zx that would fit. Of course you can put a 9" in it, anything can be done with enough time and money, and sometimes it's worth it for reliability in a specific purpose.....not sure if there would be many IRS speedway cars out there? Link to comment https://www.sau.com.au/forums/topic/268636-9-inch-diff-for-a-r33-can-it-be-done/#findComment-4582065 Share on other sites More sharing options...
fletch rb30 Posted May 10, 2009 Share Posted May 10, 2009 How much power? Have you considered a hq 3 speed box? top gear is 1:1, they are cheap, lots of guys at home put them on the back of 350chevs in saloons in nz. We ran a 6.5 9inch then went to a 7!!! it was like a worm gear! Plus you can get the 9 inch head with an alloy nose and carrier to save a bit of weight. Link to comment https://www.sau.com.au/forums/topic/268636-9-inch-diff-for-a-r33-can-it-be-done/#findComment-4586511 Share on other sites More sharing options...
Mr.Massive Posted May 12, 2009 Share Posted May 12, 2009 i dont get y?? Link to comment https://www.sau.com.au/forums/topic/268636-9-inch-diff-for-a-r33-can-it-be-done/#findComment-4589459 Share on other sites More sharing options...
Duivel Posted December 3, 2018 Share Posted December 3, 2018 9inch .... will solve allot of problem of breaking shaft and axel 700hp and up it's a weak point for skyline 1 Link to comment https://www.sau.com.au/forums/topic/268636-9-inch-diff-for-a-r33-can-it-be-done/#findComment-7892858 Share on other sites More sharing options...
GTSBoy Posted December 3, 2018 Share Posted December 3, 2018 I feel dumber for having read this thread again. 2 2 Link to comment https://www.sau.com.au/forums/topic/268636-9-inch-diff-for-a-r33-can-it-be-done/#findComment-7892860 Share on other sites More sharing options...
The Sherrid Posted January 3, 2019 Share Posted January 3, 2019 lots of cheap ratios for 9 inch's. thats what the guy probably wanted. different tracks ... different final ratios. Link to comment https://www.sau.com.au/forums/topic/268636-9-inch-diff-for-a-r33-can-it-be-done/#findComment-7895233 Share on other sites More sharing options...
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