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Worse Case Scenario


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Posted (edited)
you`ll be after a PPG or a 6 speed from a STi, price depends on what you pick TBH

Gimme a ball park figure. I have £300 for new stickers, so at least I can use that!!!! Wife's face is like thunder though, in the dog house again!

Edited by TheWelsho
Posted
Gimme a ball park figure. I have £300 for new stickers, so at least I can use that!!!! Wife's face is like thunder though, in the dog house again!

£1500-£2k for the 6 peed or 3500k for ppg

Posted (edited)

If money is a concern i'd be on the lookout for a replacement box same as what you have. (cheapest option)

Next option is to find an Sti box and diff.I preferred these ratios over the UK ratios.

If you can sweet talk the missus, i'd go for the 6 speed Forrester option for a few reasons:

One, it's quieter then a straight cut PPG, two, it has good ratios and is strong enough for probably everything you're going to throw at it.

I had the PPG straight cut 5 speed synchro and although gave piece of mind in terms of strength and was a delight to use, it wasn't until i tried the 6 speed (in the same car after i sold it), that i wished i'd gone down that route, mainly because the car was quiettt....

Don't bother about the dog box PPG, you'll eventually get tired of it for ordinary road use.

Edited by AlanG
Posted

OH NO JOHN!!

sorry to hear your having troubles...

Whilst at KH having my own gearbox troubles, I was asking around prices for the worst case (which is necessary in my case) and my options were either get a rebuild, which was quoted at around 150 labour and then parts as well (probably altogether 350 - 400ish for my particulat problem)

OR a new gearbox, the nice chap from greers said he MAY be able to pull strings and pick one up for 350ish, plus labour to fit it.

I hope i'm not stepping out of line with these guys publisising quotes, but thought I'd better let you know it might not be as bad as you think.

Posted

I put in a rebuilt Sti box and ran it for 9 months with 500Ib ft+ before it gave up 3rd gear,but you're right, ultimately you need to look for a solution that will be able to take the torque every day without worrying about it.

Short term, and to get you back on the road, find a replacement box, then start saving! Once funds are in place (and if the replacement box is still going!), change the box and punt the std one to pull back a little money and treat the missus for all the hassle!

Posted

John, when I had my gearbox issues (which Alan kindly helped with) I looked at prices etc. and there was 5 speeds from the wreckers for much cheapness. Rebuilds looked like a complete lottery in terms of prices. Thankfully mine got sorted, although I'm yet to be convinced that some damage wasn't done to curtail its life.

I know it looks like it is the box now - but worth checking the hubs/bearings? At knockers you're putting an awful lot of load on the passenger side ones and I know I'm not the only one that's had issues with them very soon after a track day. Admittedly not a complete failure like that but worth a check.

Posted
I had the PPG straight cut 5 speed synchro and although gave piece of mind in terms of strength and was a delight to use, it wasn't until i tried the 6 speed (in the same car after i sold it), that i wished i'd gone down that route, mainly because the car was quiettt....

Don't bother about the dog box PPG, you'll eventually get tired of it for ordinary road use.

Really surprised to see your point of view about PPG vs 6 speeders.

Posted (edited)

Wow. Big font Peter! :)

Nothing to be surprised about. I was very happy with my straight cut synchro PPG kit.

I wouldn't recommend a dog kit PPG for road use.

However, if i was to build another car again to this power level and mainly for road use, i would choose the 6 speed Forrester box option over the PPG for it's ratios and quietness in operation. At the level i was at when i sold the car and the abuse the 6 speed box took over the following season on the drag racing scene, it's worked very well.

The other option Welsho can look at if he wants to remain 5 speed is the helical synchro PPG kit, which will be quieter than the straight cut synchro, but i believe (haven't heard) it's slightly noisier than a std 5 spd box.

:)

Edited by AlanG
Posted
Wow. Big font Peter! :D

Nothing to be surprised about. I was very happy with my straight cut synchro PPG kit.

I wouldn't recommend a dog kit PPG for road use.

However, if i was to build another car again to this power level and mainly for road use, i would choose the 6 speed Forrester box option over the PPG for it's ratios and quietness in operation. At the level i was at when i sold the car and the abuse the 6 speed box took over the following season on the drag racing scene, it's worked very well.

The other option Welsho can look at if he wants to remain 5 speed is the helical synchro PPG kit, which will be quieter than the straight cut synchro, but i believe (haven't heard) it's slightly noisier than a std 5 spd box.

:D

All that was right over my head!!!! I'm outta my depth with this stuff, time for a sensible car again me thinks :):)

Posted
hang in there mate youve got a cracking car, nothing much left for you to break

:)

you've got a cracking car John and was on the track pretty much the full session on Saturday.

You're getting so much enjoyment when it works that you'll prob regret it if you sell.

Stick at it, find out if it really is the gearbox that has gone and then assess your options.

Posted

I'll try and simplify.

You have a choice of finding a like for like replacement or looking into buying something different more suitable for your power/torque.

Two options basically:

5 speed PPG gearkit to build into your gearbox.

Any PPG gearkit will be man enough to cope, so comes down to choice.

PPG helical synchro gearkit. Your std gearbox has helical gears and synchros, so this option is the same as what you have but much stronger gears to withstand the torque. It is almost as quiet as your own box.

PPG straight cut synchro gearkit. The difference here is that you use straight cut gears. These straight cut gears will whine when in use but are stronger than the helical cut gears, so can withstand even more torque, but are noisy in use.

PPG dog box. These are also straight cut gears but use dogs instead of synchros.This type of box will stand up to even more abuse than the above and you can slam in the gears when changing, but can be a pig to drive on the road.

6 speed boxes:

Any 6 speed box will do, but imo the Forrester has nicely spaced gear ratios whereas others have short ratios in the 1st few gears, so you could be throwing gear changes left right and centre with higher power, so could soon tire of that.

The other issue with 6 speeders is that you may need the matching diff to go along with it, but you will need the 6 speed gearlever, gear linkage and propshaft to go along with the box before fitting.

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