rbman

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Ok a mate has a Garett GT25/40 Ballbearing going for $1200 History - Purchased for $2400 (2 years ago) was put on a rice boy silvia with a highmount manifold, the dude ran it for 2,000 km of show car engine life running 10 PSI (dumb), the turbo is a perfect upgrade for high horsepower applications, too laggy for his silvia, removed it to use a small one and sold it to my mate for $1700 about a year and a half ago... mate was going to use it on an rb30et but the exaust shops said it has a rear housing too small for a big boost 30, He has wanted to sell it for a year but never got around to it... It is a perfect upgrade for big power on a 2 litre motor, also really good on a 2.5 litre motor, still provide lots of hp on an RB25 or a 1JZ This turbo is in perfect condition availible to see thru arrangement in brisbane - It has no shaft play good bearings, no cracks or any defect what so ever... If your looking at upgrading a motor with the appropirate capacity this is the best turbo you could get your hands on... Don't forget garett turbos feature the most superior build quality/reliabity of all turbos... Much better then HKS, Turbonetics etc, they mostly modify garett turbo's anyway... Specs Inlet: 4" OD Front inlet 2" ID/2.3" OD Outlet AR70 Housing Exaust: T25 Flange (SR20 flange) .86 Rear (good for a 2 2.5 Litre motor) Rated at 450HP Internal Wastegate It has a speedflow fitting worth $45 on it ready to be fitted up to a motor Pics Add on horsepowerinabox.com: Garrett GT25BB 450hp ball bearing turbo This unit has a T25 type base flange and GT25 type rear flange for the exhaust. Features a huge .70 comp cover with smooth machined bellmouth inlet and 4" inlet. This unit has a .86 exhaust housing in this 450hp form . The comp wheel actually flows 44 LBs/Min and itself is rated near 450hp. Usual ultra reliability and superb response from the Garrett ball bearing design. Sometimes called a GT25/40. Very similar to the HKS GT25/40 but with a different comp cover and different number of blades on the compressor. Great upgrade for SR20DETs and other 2 litre's. A little laggier than the 400hp unit due to the larger exhaust housing. Price: $2,099.90 inc GST within Australia

Ok pulled out and dismantled gearbox today... took a heap of photo's... anyway measured ratio's by turning tailshaft and watching input shaft... These are only rough guides... 1st 2.82:1 2nd 2.07:1 3rd 1.67:1 4th 1.32:1 (this is in the position of 5th gear) 5th 1:1 (this is 4th gear) Exterior Pic 1... Exterior Pic 2... 5th gear (or 4th )... Layshaft is clearly different from stock, notice the cone shaping is smooth before 5th... Front side layshaft... Notice the gears have no machine marks down the middle of the tooth, clearly aftermartket... and the layshaft has different machine marks on it... Comparison Pic 1, The stocker is the rear one... Again the front side... compare the gear sizes with the next pic... Stock rb20 gearbox front side... notice the machine marks on the stock gears... Rear side comparision... Stocker Is on the left... Notice the size of 5th... Stock rear, notice the crappy surface on the cone before 5th on layshaft... Again The rear of gearbox for sale... Gearbox looks mint internally, no scoring, gouges on any gears... There are no stamps on the gears so who could tell... BTW Immo thats impossible, the layshaft is all one peice, you cannot chop and change gearbox's like that... It's aftermarket anyway, they don't make aftermarket gears weaker then stock ever, so they are obvioulsy stronger... its closer ratio then stock... don't know what the gear ratio's are stock but 5th would be like 0.7:1 i guess...

Keen on the gearbox, will you seperate?, if so how much?...

I'll see what i can do...

My mate has a VL Turbo and bought a close ratio gear box from an importer not knowing it was close ratio... As far as we have researched the only 2 close ratio gear sets are from NISMO ($2500+) and OS GEIKEN ($3500+), The gearbox is in good condition, no drive gears have noise, If you are in Brisbane and are serious about buying it we could probably arrange for you to see the geabox in action... We are going to remove it soon so if you are keen you'll have to jump in quick i guess. Reason for sale - He has a large cam RB30ET with a highflow turbo, Paid a large sum to get his diff done previously and the car sit's too high in the revs on the high way, goes thru the gears too quickly it barely makes full boost before he has to change, It just does not suit His car. The gearbox would be good for drifting, drag or race cars, or if your a real keen streeter... It would have stronger gears etc... I'm pretty sure gibson motorsport used a similar setup gearbox on thier track cars. anyway he is keen on $1800 for the gearbox, they are worth alot more then this and would not turn up often.

My mate just brought a RB20DET gearbox from an asian wreckers, it came out of an halfcut... and we chucked it in his VLT, it has a hook shift short ratio setup, as in gears are as follows on the H shifter when you select 5th its 4th and when you select 4th its 5th... It also has extremely short ratios, so we expect it has been rebuilt with stronger gears. Has anyone got any idea how much such an item would be worth or what gear sets are popular for such a conversion... OS Geiken seem to be the only ones we have found... any way the bloke did not know about the gearbox so we assume its a good score for the price we got it for....