RB25DET manual conversion - group buy?

[doctorchee]

Dear All

i am doing a RB25DET gearbox conversion now. if anyone is intrested, please let me know. I can ask the workshop to do a bulk purchase discount.

conversion start today as the gearbox just arrival. will post pictues of the process.

Price: 1800USD-2000USD package include the following:1) RB25DET gearbox2) gearbox axle or shaft 3) adpartor plate4) custom flywheel 5) standard clutch (rb25det used) - condition can be bad, depends on luck6) new starter or a bracket for relocation of the original VH starter - using original starter at the original positions7) gear level relocation link.

It will be a bolt on sets for VH.

Price will be firm up upon completion (should be less than a month)

Intrested party please let me know. however, bear in mind freight is excluded and can be a fair bit as it will be transported from Thailand Bangkok. for that, u can op for the option to get you own gerabox.

Please let me know if anyone is interested.

Future projects will include custom intake manifold and turbo header.

all above is base on VH41DE. if there is any differ in VH45, please help to highlight. Thailand labour is damm cheap, so price is normally cost + a bit of labour and fireght.

CheersDerrick

Modified by doctorchee at 2:43 AM 2/4/2007
Modified by doctorchee at 10:20 PM 3/4/2007

[Stinky]

What model transmission does the rb25det use? Whats different about it compared to the z32 trans?

[David Steele]

Rb25det = 300zx trans.

Shifter end on the 300zx is different.

[doctorchee]

Dear All

i am doing a RB25DET gearbox conversion now. if anyone is intrested, please let me know. I can ask the workshop to do a bulk purchase discount.

conversion start today as the gearbox just arrival. will post pictues of the process.

Price: 2000USD-2500USD package include the following:1) RB25DET gearbox2) gearbox axle or shaft 3) adpartor plate4) custom flywheel 5) standard clutch (rb25det used)6) new starter or a bracket for relocation of the original VH starter7) gear level relocation link.

It will be a bolt on sets for VH.

Price will be firm up upon completion (should be less than a month)

Intrested party please let me know. however, bear in mind freight is excluded and can be a fair bit as it will be transported from Thailand Bangkok. for that, u can op for the option to get you own gerabox.

Please let me know if anyone is interested.

Future projects will include custom intake manifold and turbo header.

all above is base on VH41DE. if there is any differ in VH45, please help to highlight. Thailand labour is damm cheap, so price is normally cost + a bit of labour and fireght.

CheersDerrick

Dear All

Sorry for the pricing, wrong currency conversation.

New price, 1800-2000usd

Thanks.

[doctorchee]

good news. price revised due to wrong currency conversation.

No obligation, I just like to know if there is many parties intrested a not. As the workshop is helping me a lot, I just trying to get more business for them, so they can in turn do some free work for me.

[doctorchee]

hi all

some update, its done. however, I still have no time to go down workshop to find out more details. my friends help me to take all these photo first.

However, expect the price to be much cheaper. maybe a shock price.

[IMG][/IMG][IMG][/IMG]oh no can someone help me to post the photo again? actually, what happen? why I can't post? hmmmm

[TXCumtrensh]

still need to get a pedal assembly too.. which isnt part of the package, and as far as i know, no one has mentioned any pedal that will bolt up to the firewall

[elwesso]

so for 2 grand you get an adapter plate and a trans? Not bad. Can you get the adapter plate seperately???

[Mettler]

I can verify the strength of the R33 RB25DET box, these are basically the staple "ultra tough" gearbox used over here for pretty much any high powered RB application, they're basically just a GTR box without the 4wd transfer case.

doctorchee, the VH41DE has a different bellhousing bolt pattern to the VH45DE. You'd need to R&D an adaptor plate for the american boys or you won't really sell any of these conversion kits.

[doctorchee]

yes, I can sell the adapter plate seperately.

i would like to highlight, the custom flywheel is damm sexy..

or whatever configuration. i will likely to go to my workshop tomorrow and get all the pricing done.

I am more like providing a service to do conversation etc. so expect price to be cheap.

As for clutch pedel, i think its better to exclude it as its not really a big issue.

Someone please help me to post the picture... else I will learn how to do host it at some web...

[doctorchee]

opps I didn't know the bolt pattern is different.

how about the custom flywheel? I think it will fit?

well, let me post up the picture and see everyone comments first. if most agree on the design, and there is lot of people who wants it, than I think i can copy from the vh41 design and make it to vh45. than i can produce for everyone.

it will be cheap. thats all I can say.

[Mettler]

Hahah the custom flywheel can't be anywhere near as sexy as mine But yeah man they'll fit VH41 or VH45, that's not a problem.

If you ask nicely, someone might send you a VH45 sandwich plate which you can use to base your adaptor plate off.

[mtcookson]

I can verify the strength of the R33 RB25DET box, these are basically the staple "ultra tough" gearbox used over here for pretty much any high powered RB application, they're basically just a GTR box without the 4wd transfer case.

Wouldn't happen to know how it compares to the Z32 box do you? They should be the same internally if I remember correctly, however, I know after the Z32 ended here they did an upgrade to it over seas that was supposed to make it stronger/last longer something along those lines. To get those newer Z32 boxes costs quite a bit though and if these could be found for less, that would be a nice route to go if they were indeed a little stronger.

The Z box we get over here will definitely handle some power... but I think the VH will definitely be able to work it over pretty well.

[doctorchee]

http://i177.photobucket.com/al...x.jpgh ... al...5.jpg

i have learn how to host some picture. Please find above the link to view my product... made in Thailand...

well, offer is up for those who is interested. not much profit for me, more for hobby. guys let me know if u r keen.

More picture and final price should come out after tomorrow visit to workshop...

n yes yes, today my turbo, wastegate, bov, fuel regulator have all arrive... will post some photo up for that too....

[XRATED]

Nice One!

How much will the adapter plate be???

[ZedZillaZ32]

Future projects will include custom intake manifold and turbo header. Modified by doctorchee at 2:43 AM 2/4/2007

Silly question maybe, but can the turbo manifold for the vh41 fit the vh45?

cheers

[SeanDean]

I'm not 100% sure, but the VH41 plate might fit the VH45 also just by flipping it. The upper 4 bolts on the VH45 and VH41 are in the same location, and if the starter location is symmetrical then it will be fine.

Of course you would need to put coutersink clearances on both sides of the plate in order to use it on both engines, and the dowel pin locations would need to be matched on both sides too...

[SeanDean]

Oh and also, we DO have VH41's in the US, I have 2 of them. They were only available here in the Y33 Q45 from 1997-2001.

[doctorchee]

hi

Nice One!

How much will the adapter plate be???

following is the price. 1) Adpater plate VH41 to RB25DET transmission - 330USDBolt oncomes complete with all the bolts!

2) Flywheel VH41 to RBDET transmission - 330USDu need to buy (RB25DET) clutch cover n plateneed to have the starter ring gear from u. (or we can buy here and just add the cost in) lighten flywheel is possible at a bit more only. however, my mechanic say V8 many torque, too light of a flywheel can't hold at high speed.except for sending me your starter ring gear, its bolt on when u completecomes with a small nose for the gear in front to guide the gearbox shaft with engine for alignment. this is what my mechanic say. it say its just for guiding purpos. please look at photo.

3) clutch pedel - not avaiaible

4) RB25DET transmission - 999USDrb25det 5speed transmissioncome with gear shift stickcome with used standard clutch, standard clutch cover, standard flywheel (conditions depends on luck)

5) complete package - 1600USDall the above(clutch pedal not included)

All price above exclude Frieght.

FOB

2-3weeks lead time

above for VH41de

VH45DE can be done if u send me the gastet plate between the transmission and the engine.

Hope its helpful for all those who is intrested in a manual conversion. I have paid for all the R&D cost already. the following duplicate set is much cheaper.

Thank you.

Derrick +66897888660

[doctorchee]

more photo after last visit

new photohttp://i177.photobucket.com/al...a.jpghttp://i177.photobucket.com/al...a.jpghttp://i177.photobucket.com/al...a.jpghttp://i177.photobucket.com/al...a.jpg

old photohttp://i177.photobucket.com/al...x.jpghttp://i177.photobucket.com/al...5.jpghttp://i177.photobucket.com/al...5.jpg

[maxnix]

Nice work, doctorchee.

I would run at least 5 of those, or 10 if you paockets are deeper.

You will sell them all, eventually.

[doctorchee]

hey thanks

but the best thing is - actually we don't need to have group buy already.

each can order at his own. price is for individual, do not neet group buy.

[ZedZillaZ32]

following is the price. 1) Adpater plate VH41 to RB25DET transmission - 330USDBolt oncomes complete with all the bolts!

4) RB25DET transmission - 999USDrb25det 5speed transmissioncome with gear shift stickcome with used standard clutch, standard clutch cover, standard flywheel (conditions depends on luck)

Wow those gearboxes are pricey over there, they're a dime a dozen over in Oz R33's run around like fords, maybe i should ship them out to you guys

With the adaptor plate, you guys sure a Z32 box will bolt upto it?

[mtcookson]

Just searched for a RB25/Z32 box comparison and the RB25 has a very different bell housing bolt pattern. There is also a difference in the shafts between the two however gear wise they seem to be identical. There's actually a thread here on Nico with a guy showing the process of using the mixing Z32 and RB25 gear parts and putting them into a single transmission with the RB bell housing.

[Mettler]

Wow those gearboxes are pricey over there, they're a dime a dozen over in Oz R33's run around like fords, maybe i should ship them out to you guys

I really hope you aren't mistaken, because the R33 GTS25t RB25DET manual gearbox is completely different to the NA's gearbox. Maybe you should investigate just how 'dime a dozen' they really are there, I could be interested in bringing a few across the straight to NZ. They're over 2 grand here.

[XRATED]

RB25det Manual Box... Dime a dozen my a-s-s !!!

To buy a crap condition rb25 gearbox from anywhere in Aus is around $1000 AU.... A good one is at least $1500. They're not that easy to get either... Behind an rb, they usually don't last to long any where after 300rwkw and moderate torque figures.

I'm as bigger fan of nissan engineering as anyone, but I'd be tempted to look at a cheaper, more readily available and just as strong/stronger toyota w57 box, wich also has wider gear ratio's that would match a tourquey v8 better???

It dosn't worry me either way, as I'm using a GTR box with a helical cut dog gear set, rated at around 1200hp and a quad plate carbon composite clutch (eg. the flywheel is part of the clutch)...
Modified by XRATED at 2:42 PM 3/5/2007

[Mettler]

Please allow me to iterate for the final time, that the RB25DET (T FOR TURBO) gearbox is absolutely NOT the same gearbox as a regular RB25DE gearbox. The DET box easily holds its own with far more than 300rwkw, and has done so on many many conversions and high powered skylines.

But yes you are right, they're heinously overpriced, probably because they're a direct tough bolt on box for Cefiro, Laurel, and Skyline freaks with RBs... and a W57 is a much cheaper and more common option. Mine handled my VH41 fine, and they reportedly take abuse from motors over 500HP without blowing up. I read in an article a while back that the only thing that ruins them is consistent high RPM. Oh, I did find first gear a little short on my W57, with decent wheelspin and slingshot acceleration, but that could be due to 4.375:1 rear end.

[XRATED]

I should have said that the expected life span of an rb25det box rapidly decreases after use behind an rb pushing more than 300rwkw...

Either way, they aint cheap or readily available.

I've personally broken 3 rb25det boxes, one behind a 312rwkw rb30 and two behind a 412rwkw rb25. I've also busted 2 GTR boxes in my 393rwkw R32 GTR. Purely through the gear face strength, not abuse.

Just my experiences though.

[Mettler]

That must have left you out of pocket a few times! And you've been shearing teeth off them ?

Perhaps I don't hear of these gearboxes breaking so much because they're often used in drift application, where the wear & tear is not directly inflicted on the gearbox itself.

[XRATED]

ha ha ha... the RB25 was my girlfriends car.. Sorry dear! I bought her a GTR in the end, with an os giken x-gear set. It was cheaper than buying RB25det box's in bulk!