BMW 318IS VH41DETT build up

[Mettler]

Help help please forward documents.

thank you thank you.

I'll do it tomorrow if I can, gotta find the CD that I burned the stuff on to... it's not here on my work computer !

[doctorchee]

I'll do it tomorrow if I can, gotta find the CD that I burned the stuff on to... it's not here on my work computer !

Thank you so much.

Thank you

Thank you

Thank you

[doctorchee]

$300 USD seems a little bit cheap for that, but its not cheap enough that would get me worried. (i've bought Z32 Transmissions for $10, from a close friend though)Make sure that it is at the very least a late 2004 transmission and up. If I were you, I'd only look at 2005 to 2006 to be safe.Take your time to find the right parts, a few extra days of searching is better than getting bad parts. Z33 transmissions aren't too hard to find.Good Luck!

Sorry, need to check where else can I look for the late Z33 2005-2006 transmission? or even early Z33 gearbox?

As the gearbox would cost me $300US but the shipping will cost me another $350US. sounds crazy as the shipping cost more than the gearbox.

So I hope if its possible to look at somewhere else.

Thanks

[riu]

well... in the US we use a site called craigslist.com pretty often, but shipping out to bangkok would probably be really expensive.

what about junkyards and such down in thailand? or perhaps seeing if you can buy from someone in south east asia, china or NZ or Austrailia, i'm sure shipping would be considerably cheaper if you're buying from around there.

[mtcookson]

Does anyone know what the specification for the gearbox? Z33 350Z 6th speed manual.

1) Gear Ratio??2) toruqe it can handle???3) others info??4) can mate to a VH41DE with Z32flywheel, Z32 clutch, Z33 gearbox ?

1 - Final gear (6th) is actually a higher ratio than the Z32's. If you're looking for highway fuel economy, the Z32 transmission is better. Also, since you're building a turbo setup... you actually want the wider gear ratios that the Z32 5-speed has. Close gear ratios are good for n/a engines or other engine that have a very narrow torque band. Boosted engines have a very broad torque band and you want to keep it in gear as long as you can (for the most part) to get as much of that torque to the ground as you can.

Wide gear ratios with a low ratio rear end makes for a good forced induction drivetrain. Oddly enough, comparing a high ratio rear end to low (say 4:10 vs. 3.538 respectively) the 4.10 would feel faster when in reality, the 3.538 actually provides faster numbers. The 4.10 would allow you to put more peak torque to the ground but for a short period of time. The 3.538 would put slightly less peak torque to the ground, but puts the torque down over a longer period of time. There's a guy over at HybridZ that's running a rear end in the low 3's (maybe even in the higher 2's) and continually betters his track times.

2 - Not nearly as much as the Z32 5-speed. If the above isn't enough to turn you away, I saw a reply on a thread somewhere where the person had talked to someone from either JWT or Stillen (one of those Nissan places) and they told him that the 350Z transmission wasn't really that good for much over the stock power output.**** But even if the transmission was as strong... going along with above, it wouldn't offer the performance characteristics that the Z32 transmission would be able to.

**** Took me a bit but I finally found the thread. Here's the post I was talking about - http://forums.hybridz.org/show...nt=20
Modified by mtcookson at 2:23 AM 6/16/2006

[Raxephon]

I have the documents relating to the wiring diagram for the Q45, and the VH45DE engine loom. The VH41 loom is (nearly) identical. What specifically do you need ?

Just in case Mettler hasn't had a chance to get those off to you, here's a '94 ECCS diagram for a VH45DE.

[doctorchee]

1 - Final gear (6th) is actually a higher ratio than the Z32's. If you're looking for highway fuel economy, the Z32 transmission is better. Also, since you're building a turbo setup... you actually want the wider gear ratios that the Z32 5-speed has. Close gear ratios are good for n/a engines or other engine that have a very narrow torque band. Boosted engines have a very broad torque band and you want to keep it in gear as long as you can (for the most part) to get as much of that torque to the ground as you can.

Wide gear ratios with a low ratio rear end makes for a good forced induction drivetrain. Oddly enough, comparing a high ratio rear end to low (say 4:10 vs. 3.538 respectively) the 4.10 would feel faster when in reality, the 3.538 actually provides faster numbers. The 4.10 would allow you to put more peak torque to the ground but for a short period of time. The 3.538 would put slightly less peak torque to the ground, but puts the torque down over a longer period of time. There's a guy over at HybridZ that's running a rear end in the low 3's (maybe even in the higher 2's) and continually betters his track times.

2 - Not nearly as much as the Z32 5-speed. If the above isn't enough to turn you away, I saw a reply on a thread somewhere where the person had talked to someone from either JWT or Stillen (one of those Nissan places) and they told him that the 350Z transmission wasn't really that good for much over the stock power output.**** But even if the transmission was as strong... going along with above, it wouldn't offer the performance characteristics that the Z32 transmission would be able to.

**** Took me a bit but I finally found the thread. Here's the post I was talking about - http://forums.hybridz.org/show...nt=20

Modified by mtcookson at 2:23 AM 6/16/2006

Thanks for your info so much.

However, from what I have learned, its seems like Z32 gearing is shorter the Z33. Please correct if I am wrong. I got the info from the following:

http://www.freewebs.com/silver...s.htmh ... club.shtml

If you compare them:

Z32 Z331st 3.21 3.794 (1.28) (1.47) 2nd 1.93 2.324 (1.63) (1.7)3rd 1.3 1.624 (0.3) (0.353)4th 1 1.271 (0.25) (0.271)5th 0.75 1.000 (0.206)6th 0.794

The Z33 is longer in gearing. Thus, more time to trasmit power to ground and better for turbo powerband.

I have also learned around that the Z33 is pretty strong gearbox. Not sure although. However, I like the idea of 6speed and I got it quite cheap other then the stupid frieght charges. The worse case is if I break the box, I will strenghten it during rebuilt.

I can't find any in Thailand market. They are very good at breaking gearboxs here. Its a place with many 600hp or more machine around.

I have sourced a Z32 turbo OS Giken twin plate clutch with flywheel also. It is a used items. I hope everything can bolt up well.

Anyone, please advise and comments on anything for my setup. I like comments... .... be it good or bad......

RegardsDerrick

[mtcookson]

Z32 w/ stock R230 and stock 245-45-16 tires up to 7,000 rpm:

1 - 43 mph2 - 72 mph3 - 107 mph4 - 139 mph5 - 185 mph

Gear change difference:1->2 - 29 mph2->3 - 35 mph3->4 - 32 mph4->5 - 46 mph

Z33 (and to keep comparison right, w/ Z32 R230 and 245-45-16 tires) up to 7,000 rpm:

1 - 37 mph2 - 60 mph3 - 86 mph4 - 110 mph5 - 139 mph6 - 175 mph

Gear change difference:1->2 - 23 mph2->3 - 26 mph3->4 - 24 mph4->5 - 29 mph5->6 - 36 mph

The rear end and tires will change everything around of course but transmission for transmission, the Z32 5-speed has slightly wider ratios. If you use a lower ratio rear end it will emulate even wider gears.


Modified by mtcookson at 10:11 PM 6/17/2006

[Mettler]

Ah so sorry, I forgot again ! >_< I've been working on the car all weekend.

I've got the same diagram as anlasak, but I also have a separate engine only wiring diagram for the VH45DE... I will try to remember to bring this in tomorrow !

[doctorchee]

Ah so sorry, I forgot again ! >_< I've been working on the car all weekend.

I've got the same diagram as anlasak, but I also have a separate engine only wiring diagram for the VH45DE... I will try to remember to bring this in tomorrow !

Thank you.

[doctorchee]

Hi

Can I ask is there any problems in any of the following options?

Engine Flywheel Clutch Gearbox VH41DE Z32 Z32 Z33VH41DE SR20DET SR20DET Z33 (hope this works)VH41DE Z32 Z33 Z33VH41DE Z33 Z33 Z33 I am asking this is because, In Thailand, SR20DET clutch is largely available.

Z32 or Z33 clutch is rare items. I have to import in.

Please advise the clutch size also, eg, is Z32 clutch disc larger than SR20det which can provide better clamping force.. If yes, maybe, I can reconsider to import in the clutch.

Thank you.

Advise needed.

RegardsDerrick

[Mettler]

Hi doctorchee, the major problem that I see with your list is that it does not include the option of using my custom designed flywheel, which is significantly better than any of the above options !

[doctorchee]

Hi doctorchee, the major problem that I see with your list is that it does not include the option of using my custom designed flywheel, which is significantly better than any of the above options !

Sorry I can't afford yours.

In Thailand, They have SR20DET single or twin plate OS giken clutch (used) range from 300-600us. In very good conditions. As a single or twin plate includes flywheel and complete with clutch already, this options will be better on my budget.

Getting a custom flywheel and aftermarket clutch and add in the frieght, it will be beyond my budget.

Thank you.

RegardsDerrick

[Mettler]

I'm pretty sure you can't bolt the SR20 flywheel onto the VH41.

[doctorchee]

I'm pretty sure you can't bolt the SR20 flywheel onto the VH41.

I read the information from here.

Hopes it is correct.

zerothread/164165

[Mettler]

Oh that's right, he did figure that out ! My bad >_<

[doctorchee]

Oh that's right, he did figure that out ! My bad >_<

btw, some new question for any one out there who can advise.

I am thinking of putting a 150hp dry shot of nos.

What is the nos /fuel ratio?

I should be using an aftermarket ECU to control the extra injectors to compensate the nos. but how much fuel is enough for the nos?

Thank you

[doctorchee]

Here is some update.

The engine have find the new position to sit in the bay.

However, the engine top just stick out to much. Think not very acceptable.

The new solution is to cut the firewall and recess the engine in. Will try to cut as much firewall as possible (aiming 12inch) to recess the engine as much as possible.

This is great for weight distribution of the car. Hope to get 50-50 front back wieght. keke

The engine just stick out to much to be acceptable.

[doctorchee]

a better view of how much the engine stick out...

[doctorchee]

My new plans. cut firewall..

Should have thought of that long time ago. I only recall this idea when I see the other car around...****...

[doctorchee]

Hi Pal

I heard you are mating VH41De with V160 (2jz) gearbox?

Have you complete it? any adivse or comment on how to do it?

As I am thinking to do it also. As 350Z gearbox proved to be very ex to frieght in.

Thanks

RegardsDerrick

[Mettler]

Hey dude ! I'm using a W57 Celica/Supra box from the late '80s models, they're very strong, but I don't think they're good for 800HP, only around 500 or so.

My recommendation to you is to source an R33 Skyline GTS25-t gearbox... they are the strongest RWD transmission that Nissan built and I really wanted one for my project but they cost too much.

Then again, any decent gearbox can be adapted.

All you have to do is buy an actual gearbox, then measure the distance from where the spigot starts to the mating face of the gearbox.

Put your bellhousing on a mill, and chop it flat to that dimension (minus the thickness of the spacer plate).

Weld a flat plate of aluminium on the milled end of the bellhousing, and cut a hole out of the middle. Then it's up to you to center the gearbox from there.

Cut a hole in the side of the bellhousing for the clutch fork, and install the pivot point on your new welded plate. Alternatively, source a hydraulic throwout bearing, but might be hard to fit for you with a twin plate clutch.

[mtcookson]

Isn't the GTS-T box the same used in the Z32?

[Mettler]

Pass... I dunno. Sounds logical to me tho, since the Z32 TT's were the most heavy duty performance Nissan made. 9" diff, biggest this, strongest that, etc.

[Ezekial]

no its not and the Z32 transmission is believed to be stronger

My mate has broken 2 x RB25 gearbox's with only 440 rwhp RB26

i wouldnt run one behind a turbocharged VH4*

[mtcookson]

Here we go. According to this link some R32's and R33's had the 300ZX transmission (FS5R30A) while others had a different 5-speed designated as FS5W7.

http://www.skylinesdownunder.c...id=79

[Mettler]

no its not and the Z32 transmission is believed to be stronger

My mate has broken 2 x RB25 gearbox's with only 440 rwhp RB26

i wouldnt run one behind a turbocharged VH4*

Interesting, as everything I've read points to the R33 Skyline GTS25-t Manual gearbox (specifically only this make and model) to be identical internally to the GTR box, but without the 4wd transfer section, and nigh on indestructible... commonly used on 800+ HP RB engines.

[Ezekial]

Here we go. According to this link some R32's and R33's had the 300ZX transmission (FS5R30A) while others had a different 5-speed designated as FS5W7.

http://www.skylinesdownunder.c...id=79

I meant Z32 transmission. RS5R30A. I believe the Z31 is the same as R33 RB25DET transmission.

Mettler ... can you give some examples of these 800+ HP RB engines using standard internalled gearboxs?? I'm interested to know because like i said a good mate of mine's 440rwhp RB26 (RWD only) has killed 2. I dont know of ANY making that sort of power using factory gearsets. Most use pfitzner (PPG) or PAR.

Its hard to estimate the power rating of Z32 transmissions. I only know of 1 example in excess of 600 rwhp still using factory gearset without problems. Although i'm sure if you search on the internet somebody will say they are good for 1 billion hp

[riu]

to my knowledge (and don't quote me on this) the Z31 and Z32 transmissions are the same, but geared slightly differently. The N/A and Twin Turbo Z32 transmissions are also the same, but the rear end / final drive is different.Common practice in the Z32 community is to use the weaker N/A rear end on the Twin Turbo's for a quicker final drive, not the best choice but a very easy way to get a Z32 running quicker. These transmissions have easily held up to 800 horsepower. The Z32 autobox though is absolutely industructible, with a good aftermarket flexplate and HKS ALC (active line controller) the Z32 autobox has held up to 1300 rwhp.

It always depends on how you drive, my mechanic is putting down 610 rwhp in his Z32, he used to run a stock clutch due to his weak leg, that transmission only lasted 2 runs of powershifting on a dragstrip, he has since thrown in a new transmission and is running the proper clutch and flywheel set up and has had no problems with the transmission.

There are always gear sets you can get for the Z32 transmission anyways, LeaderGears has a fairly cheap gear set, and OS Giken produces an array of high quality gear sets for the Z32 Transmission.

[mtcookson]

I meant Z32 transmission. RS5R30A. I believe the Z31 is the same as R33 RB25DET transmission.

87-89 Z31's have the same transmission code as the Z32 transmission. They are slightly different though. I know the lengths of the two are different. Gear ratios are slightly different as well to my knowledge. It is said that the Z31 transmission is slightly weaker than the Z32 transmission though.