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Gearbox Oil Blowing Out Top Of Transmission

oxford1327

By oxford1327,
in Four Door Family & Wagoneers

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oxford1327 Experienced

oxford1327

Posted
Posted

i have a series2 rs four s manual and had it up on a hoist the other day sussing out the exhaust to be built, when noticed some oil around the top of the transmission casing, upon further investigation we found that there was not much oil left in the box as it had all blown out around the gear shift mechanism and up into the shift lever boot.

we removed and cleaned the boot etc resealed and tightened down everthing we could drained the remainder of the transmission oil and replaced it along with a slick50 treatment, we also blew out the breather hose with compressed air and replaced.

i was just wondering if this was something i need to watch for in future or would it be a once off perhaps?

oxford

CruiseLiner Mentor

CruiseLiner

Posted
Posted
i have a series2 rs four s manual and had it up on a hoist the other day sussing out the exhaust to be built, when noticed some oil around the top of the transmission casing, upon further investigation we found that there was not much oil left in the box as it had all blown out around the gear shift mechanism and up into the shift lever boot.

we removed and cleaned the boot etc resealed and tightened down everthing we could drained the remainder of the transmission oil and replaced it along with a slick50 treatment, we also blew out the breather hose with compressed air and replaced.

i was just wondering if this was something i need to watch for in future or would it be a once off perhaps?

oxford

hey mate, ive got a rb26 and gtr 5 speed gearbox and ive had the same problems, and do u mean your gearbox fluid is low or the transfer case? as the shifter is actually into the transfer case. mine was abit of a problem a couple of times i didnt have the gearstick boot on and planted it flatout on the freeway and it started spewing out like a volcano into the car over my seats/dash, etc. and it did it about 3 times or so. the local workshop told me its a usual thing, as usually the boot stops it coming out. but that shop i dont use anymore and wouldnt trust them at all.

i was thinking the fluid is getting too hot and boiling, but i highly doubt it. maybe just the g-forces from planting it forces the oil into the gears and causes it to spray/splash up.

also the fluid in the transfer case is ATF and totally seperate to the Atessa container fluid mounted in the boot.

let us know if u find answers :P

cheers

Brad

oxford1327 Experienced

oxford1327

Posted
  • Author
Posted

cant say i really know what the case is but i never really looked that hard into it as the hoist it was sittin on at the time is of the local skyline nut who jus happens to work at an exhaust place, he said he had not seen this problem other than when a breather hose is blocked, even though when he blew the hose clear there was nothing appearing to be obstructing it? as for the oil boiling i don think it would be that unless there are some real bad bearings and by that stage you would know there was a real problem.

also i dunno if there would be any difference between series one and seriestwo mine has the neo engine and its my first car with a hair dryer so don really know much bout em, i have always had bikes over cars and still do i jus wanted a nice wagon.

i will endeavour to find out as much as i can from local nutters an pm you if i find anything out.

cheers

oxford

CruiseLiner Mentor

CruiseLiner

Posted
Posted
cant say i really know what the case is but i never really looked that hard into it as the hoist it was sittin on at the time is of the local skyline nut who jus happens to work at an exhaust place, he said he had not seen this problem other than when a breather hose is blocked, even though when he blew the hose clear there was nothing appearing to be obstructing it? as for the oil boiling i don think it would be that unless there are some real bad bearings and by that stage you would know there was a real problem.

also i dunno if there would be any difference between series one and seriestwo mine has the neo engine and its my first car with a hair dryer so don really know much bout em, i have always had bikes over cars and still do i jus wanted a nice wagon.

i will endeavour to find out as much as i can from local nutters an pm you if i find anything out.

cheers

oxford

no worries, the gearbox is the same in series 2 stagea, 32/33gtr,260rs (and i think the gts4)

ill see how mine goes in the next couple of weeks as im finally getting it back on the road after the engine build which has taken over 7 months or so.

owned the car since november 04 and only done about 1200km in it since :(

the joys of car ownership and modifying em ;)

GTRgeoff Grand Master

GTRgeoff

Posted
Posted

This can be common on the track when the rubber boot is split. Scotsman lost heaps at PI through here, but with ess aggressive driving would occur over a longer period with less residual.

Just replace the boot with a standard item from Nissan and you'll be fine.

CruiseLiner Mentor

CruiseLiner

Posted
Posted
This can be common on the track when the rubber boot is split. Scotsman lost heaps at PI through here, but with ess aggressive driving would occur over a longer period with less residual.

Just replace the boot with a standard item from Nissan and you'll be fine.

good to hear its normal, and just replaced the boot the other day actually. :yes:

thanks

Brad

oxford1327 Experienced

oxford1327

Posted
  • Author
Posted

k thanks guys i was wondering if there was aproblem with the box being pressurised but if you reckon its normal i can handle that but will still be keeping an eye on it just the same

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