S15 6speed Into Rb25/26

[sash_turbo]

just need to know if an s15 6speed box will fit behind a rb25/26 and/or what needs to be done to fit??

[Malecki]

whats the point ? its too weak to handle large power, are you putting it into a skyline or a silvia or something?

[Bl4cK32]

cut'n'shut bellhousings then it will fit. Also custom tailshaft id think.

If u have to go rb engine, stick with the rb25 box as its way stronger.

[sash_turbo]

reason why i am asking is i have one and a mate wants to fit it into his skyline, i said the same thing, stick with your rb25 box, but he is willing to buy it off me, and i wana sell. any more info would help guys, thanks.

[dangerous_daveo]

Yeahhh it will snap. If you are a good friend dont sell it to him.

[_8OO5TED_]

crazy idea, RB25 box for the win!

[iandawsonwa]

six speed S15 boxs are weaker than rb20 ones. not recomended

[SECURITY]

think of it this way. they've fit 6 gears into the same bell housing as the 5 speed.

2 of my mates have swapped over to the 5 speed in their s15's after breaking the 6 speed.

[R31Nismoid]

anyone that chases mild upgrade in the S15 swaps back to the 5speed box

[[200]]

I havent had any problems with my 6 speed and it has seen 300kw@wheels...

[R31Nismoid]

cout yourself lucky

i know of a lot of people who have had no end of problems... many problems.

swap back - problem goes away

[[200]]

I dont count myself lucky, I actually look after the car and use the clutch between gear changes and don't do burnouts or drift.

Treat it properly and it wont break. Simple.

[R31Nismoid]

so basically your driving it like a nana 9.9 hours out of 10?

i mean a few nights @ the drags, or a few circuit days and they literally fall apart, and thats not unreasonable treatment either.

That to me is a POOR gearbox design because they cant handle even the above which is no great workload

I could make 500rwkw and use a S15 box. But give it ONE iota of work other than a dyno, see ya gearbox

[MerlinTheHapyPig]

another thing to condsider, some people don't like 6 speed's because the gears are shorter and u have to shift more... It might be a neat idea, but reliability problems with the s15 box aside, do you actually need it? is it worth the expense?

[funkymonkey]

lol if you're selling the gearbox then its an awesome idea, you can adapt them to fit...

if you're buying it, then its a horrible idea...

[[200]]

  R31Nismoid said:

so basically your driving it like a nana 9.9 hours out of 10?

i mean a few nights @ the drags, or a few circuit days and they literally fall apart, and thats not unreasonable treatment either.

That to me is a POOR gearbox design because they cant handle even the above which is no great workload

I could make 500rwkw and use a S15 box. But give it ONE iota of work other than a dyno, see ya gearbox

Yes thats right, I drive like a nanna.

I use the clutch when I change gears.

I dont shift over the redline of the motor.

I dont do burnouts

f**k you're a wanker.

[ebola]

lets try again...

how much does an s15 weigh?

how much does his r33 (I presume) weigh?

how much power does an sr20det produce?

how much power does an rb25det produce?

You said you recomended 'keep the rb25 box'...

There are people who have had no problems with lots of power through an s15 6 speed. Lucky them, they are a minority. And the rb25 can put out more than an sr20, if only because of 500 extra cc's.

This thread was interesting, but the point was made long ago. Fit or not, it would be an expensive excercies in pointlessnes.