I m after subaru wrx manual gear box ratio 3.9:1 got a ty754vn4a can u tell if this box has 3.9:1 ratio as well

SOURCE: 1995 subaru impreza wrx sti overboost problem

I bought a 1995wrx turbo japanese import 260bhp standard,which can only run on v-power 99octane fuel,from scooby clinic in chesterfield (scooby race tune expert mechanics).I was the first person in england to test drive on road (it had not long arrived in the uk & had been put on rolling road a few times),whilst test driving,the turbo boosted normal & then started juddering slightly etc etc,i asked scooby lad "what was that" he wasnt sure(office boy!) & assured me that whatever it was theyre top mechanics would sort it out & do a full service,change the belts etc etc, ...so i bought it,luckily with a 30 day warranty included starting from collecting it.I picked it up about a week later,i got as far as 20mile away(nearly home) & it started juddering again,nothing too serious,so i thought we'll see how we go.next day same again,after 3days it were juddering more visciously,getting worse to the point where i nearly hit the windscreen,i thought its got to be a fuel blockage?.it backfired twice & not long after that packed up & would not start again,i foned scooby clinic & towed car back up to chesterfield.they kept saying "i must of put wrong fuel in",they ended up taking engine out cos head gaskets had blown,engine had died,6-7 wks later they told me to come & collect car with no charge,i was told to run it in for 500 miles steadily,& then take it back,they then changed oil,sparplugs & boosted turbo back up(re-connected it),the boss apologised to me & said if he knew it were like that he would never have sold it at all to anyone,he explained that the engine was carboned up(blocked) they did a nearly full engne re-build free of charge.the boss said if he knew it were blocked up they would of gave it a thrashing to clear the engine.

SOURCE: 1998 subaru impreza wrx sti overboosting in every

waste gate(valve on turbo with vacuum hose)or vac leak,or maybe computer issue,get it looked at,or you could blow something !!!

SOURCE: Subaru Impreza WRX 2003 won't start - starter will

check all wiring to starter, if all ok you have faulty bendix in starter. replace the starter and your problem will be corrected

SOURCE: CLUTCH JUDDER IN 1ST GEAR WHEN START OFF THEN OK

A note to the first answer, if the clutch chatters in first gear that is indicative of a bad pressure plate or broke clutch springs, if it is not removed and repaired soon the clutch will shatter and damage the flywheel and possibly the input shaft and the the pilot bearing which could damage the transmission. There is also a possibility of the spring coming out of the clutch plate and wedging between the flywheel and pressure or clutch plate and causing severe damage to the internal parts just mentioned.

SOURCE: how do you know what ratio a subaru wrx gearbox is

This information is from my genuine service manual. I hope it is of help.
Non-turbo
Turbo
Sedan Wagon
Type 5-forward speeds with synchromesh and 1-reverse
Transmission gear ratio
1st 3.454 3.454
2nd 2.062 1.947
3rd 1.448 1.366
4th 1.088 0.972
5th 0.780 0.738
Reverse 3.333
Front reduction gear Final
Type of gear Hypoid
Gear ratio 4.111 3.900
Rear reduction gear
Transfer
Type of gear Helical
Gear ratio 1.000 1.100
Final
Type of gear Hypoid
Gear ratio 4.111 3.900 3.545
Front differential Type and number of gear Straight bevel gear (Bevel pinion: 2, Bevel gear: 2)
Center differential Type and number of gear
Straight bevel gear
(Bevel pinion: 2, Bevel gear: 2 and viscous coupling)
Transmission gear oil GL-5
Transmission gear oil capacity 3.5 2 (3.7 US qt, 3.1 Imp qt)