ok, i have a uk 95 classic.
i'm wanting a closer ratio box, and found a p1 box

will i nned anything for this box to fit.
the box has the diff & prop shaft

or is there another box worth getting.
thanks in advance

 

Work it out GearHack: Subaru Transmission Chart

Gearboxman - ratio calculator tool

 

well, i've just got the box.

a p1 box with the prop shaft and diff
will i need anything more to fit this?

or will it be a strait fit.

 

You will need to make up some means of bolting on the starter motor else it will be only held on by 1 bolt.

I tapped the hole and made a special stud on the lathe.

 

are they different then mate. anything else to worry about
or just this issue. whats different from the uk early classic to the p1 starter motor

 

JDM WRX Type RA - MY97/98

G/B code: TY752VB5BA

1st.................. 3.083
2nd................. 2.062
3rd................. 1.545
4th.................. 1.151
5th.................. 0.825

Final Drive..... 4.444:1


The above is the best combo - you'll need the gearbox and matching 4.444 rear diff. This has the shortest rear diff available and 2nd to 5th ratios are even shorter than the WRX's - so will be waaaay shorter than your UK ratios! It'll be mental!

The P1, whist having quite short internal ratios, has a pretty tall FD at only 3.333: 1 (taller even, than your existing 3.416:1 one )

 

or well, a little to late.

but the p1 box should be a lot better than my uk one?

my car only got 291bhp, the torque was quite low too.
this was becouse of the long ratios in the old uk box.
even slightly closer should be better.

 

Your engine block wont be tapped to take a bolt, as originally its a 4 bolt fixing to box, the P1 box is 8 bolt of which 2 are used to mount the starter and go thru to the engine block.

If you look at your original box, one hole is tapped the other is clearance as the bolt goes to the block. On a P1 both are clearance.

 

Just sold my WRX RA one as it was to short for my drag racing

 

this will then be better, for top end speed then
all im after is better pic up.

 

The P1 box has a final drive ratio of 4.444 and this give 21 mph per 1000rpm

Banny

 

sounds complicated really.
but it does fit when the 4 bolts are on?

im trying to get some where to fit it. as i havent got the time.
but if i have to then, i have to.
apart from this little issue. is there anything else mate

thanks for the insight

 

It should be less top end as you have shorter 4th, 5th and FD - but don't worry about that.

It WILL give you significantly better accleration through all gears - to a very noticable degree! It will more than meet your brief - just ask mit...

 

gd, gd. just need to get it fitte know.
thanks mate

 

Its a straight fit no probs, but sort the starter issue first as its a pig when fitted, but possible. I know cos i never spotted the starter prob.LOL

 

what i've done. is took the stud of the uk box
& helicoiled the end on the p1 box. works a treat.

but i want to make sure this box is perfect before i put it on.
what can i check, just to make sure is good