Quote:
Originally Posted by fliprayzin240sx
Your best bet is going with a full Skyline GTR rear end with the R230 diff. Thing will take a beating and I've seen folks with 1K hp R32-R34 GTR running the stock rear ends with no issue. Guys I knew who were going over 600-700 RB25s were breaking axles and fixed it by upgrading to a the beefier R230 rear end.
You'd need the subframe, diff, axles and hubs to make this work.
Q45 rear end wont do you jack shit since its still the regular R200 rear end. The weak point of the R200 rears is the axles. The splines have a tendency to twist like pretzels and snap.
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Some corrections for the above infos :
R32-34 GTRs dont use R230 diffs, they still use R200 diffs (with diff to driveshaft joint are same as Z32 TT using 6 bolt flange, not 4 bolt flange of other R200).
R32-34 GTRs use same hubs and bearings (thick big splines) with Z32 TT.
R32-34 GTRs use same thickest but different lengths axles with Z32 TT (due to wider track and wider R230 diffs in z32 TT), axles has same 6 individual bolts axle flange to diff flange joint as Z32 TT axles, (beware that the PCDs of the 6 bolts is 2-3mm narrower in R32 GTRs axles than R33-34 GTRs axles, and R32 GTRs bolts likely to be same PCD with Z32 TT as they are from same generation production years).
R32-34 GTRs diff cover has 2 big studs mounting to subframe same as S14, S15, R33, R34, C34, C35.
So you'll need :
R32-34 GTRs or Z32 TT hubs and bearings
R32-34 GTRs diff and axles (diff and axles must be from same generation)
I have s15 subframe with R32 GTR diffs, axles, hubs, and bearings mounted in my Cefiro A31.
I have R33 GTR axles that doesnt fit the R32 Diffs due to wider PCDs of the 6 bolts on the axle flange than the R32 GTR diff flange, as described above.
My friend have complete Z32 TT subframe with the diff, axles, hubs, bearings, which we have compared to my GTR parts, hence I know the above infos.
I havent had any Q45 parts so can confirm on them, although I have read that 1 Z32 TT and 1 Q45 axles (cant remember right or left axles needed) will fit GTR diffs on S,C, and R Chassis subframe.
And yes some R32-34 GTRs have made dragstrip runs on stock rear end at over 1000 hp.
Hope this helps.