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Synchro crunch 3rd to 4th on STi5

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Old Oct 7, 2001 | 11:45 PM
  #1  
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phil_ng
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Having done a few track days I am getting a crunch from 3rd to 4th which is alleviated if I slow the change down. If this is worn synchro ring wouldn't it be same on 5th to 4th which is no problem at all?? I have found several threads and info about 4th to 5th change but this is not problem to me.
If I need to replace synchro ring oin 4th should anything else be renewed in box whilst it is out?
I've always used Silkolene synthetic and changed after track days. Could it be lubricant problem?
If I need this done anyone any idea about how much labour time will be involved?
Any suggestions greatly appreciated.
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Old Oct 8, 2001 | 05:00 PM
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I think David Taylor (Rannoch) has a similar prob with his 3rd gear

Speak to Steve Lawson on this one - 07956619287
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Old Oct 8, 2001 | 05:06 PM
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I was just about to post exactly the same problem on my '98 wagon. Be interested to hear what you find out.

Mine has just started to become noticeable at anything over 3-4000 rpm. I seem to remeber it happened quite often before when giving it a bit, but it's consistent now. Car is completely standard, never tracked. All other gear changes are fine (well, that is to say for this car anyway, never thought much of the gearchange!).
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Old Oct 8, 2001 | 07:54 PM
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Is box a weakness generally? Seems lots of postings on this subject
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Old Oct 8, 2001 | 09:24 PM
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i too have a similiar problem but with 2nd and 3rd. Have not had work priced yet, anyone know who best to contact, i am in southeast. Someone did say that it was the synchro and would cost but not whether anything else involved
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Old Oct 8, 2001 | 09:41 PM
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Try GDA sports (near Tunbridge wells), they've had a big of a rung on Gboxes,When I spoke with Graham re same problem on 4th he quoted @ 5 hours labour for clutch change & about £200 for checking & changing the synchro ring on 4th. The other option is they have spares boxes for £450 exchange.
Give them a ring & have a chat, always very helpful & honest.

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Old Oct 8, 2001 | 11:40 PM
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4th gear syncro is a common failing on MY97/98 UK scoobs and Sti V's

I got the problem with mine (UK MY98) about 9 months ago and luckily because it was still within warranty also got a full gearbox rebuild on IM.

It was a worn syncro ring on mine, but also lead to a worn 4th gear as well which got replaced during the rebuild.

My car ended up with a set of new syncro rings and a new 4th gear.
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Old Oct 9, 2001 | 12:52 AM
  #8  
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Zach

Steve Lawson is based nr Gatwick and is one of the best people around to sort out your problem!

I would'nt drive all the way from Bristol if I did'nt think so!
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Old Oct 10, 2001 | 11:13 PM
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steve
have you still got his details would greatly appreciate it if you can pass them on
thanks
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Old Oct 14, 2001 | 11:46 AM
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Common problem on P1's, 4th/5th gear synchros wear and don't allow gear changes above 5000rpm, the cogs are on massive back order with Subaru, so best go through someone else for the parts if you are not doing it under warranty.

...©
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Old Oct 14, 2001 | 09:23 PM
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Oh Dear...

My '98 STi IV Wagon has just started to graunch between 3rd & 4th. I've just checked my warranty to find it expired last month!

I thought it might have been the track days at first, but having read similar stories for non-tracked cars I'm slightly relieved...but only slightly.

If anyone knows a good gearbox specialist in the West London/Thames Valley i'd be grateful for a response. Maybe we could all club together and get a deal?....

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Old Oct 15, 2001 | 05:12 AM
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My MY99 STiV has only got 8700 miles on the clock but is really hard to get into 1st sometimes - never been raced. Double clutching usually does the job but not always.

Do you think this is something that will loosen with time now that i'm using the car more than the previous owner or is it something i'm stuck with?


thanks,

bss
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Old Oct 15, 2001 | 07:57 AM
  #13  
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Just a couple of points...

...gear box part availability - got mine within 48hrs of ordering, no backlog, just not held in stock

...the fault on my gearbox (StiV) was the oil spreader attached to the 3rd gear sprocket

...3/4th gearset come as a pre-built unit from Subaru, cost around £220

...the majority of Sti V gear set parts are the same as the normal UK car - not necessarily the same as the P1 - main difference is drop gears and final drive

...master Scooby man is Steve Lawson, specialist gearbox man is Phil at Barrets, especially if you want something a bit non-standard

...5th synchro very common on Type Rs, less so on StiV/P1 - mostly affected by running in - I have heard it go on cars as young as 100miles!

Cheers,

Trout
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