Jump to content
SAU Community

Recommended Posts

After months and months of research, I've decided to go the OS88. Went for a drive in one and it was awesome. Quiet in gear, bit of clunking between gears but who cares about that, 4 choices of ratios and 6 speed. It also bolts straight into a R33 GTR so no shaft/transfer case changes.

It won't happen this year, but it'll happen. :)

We ended up with a Quaife/Trust 6 speed straight cut dog box, will be interesting to see how long it holds up.

My money is on the input shaft going first.....

GTRPSI: Be careful with the reverse gear on the Trust. It's only 18mm wide and the idler gear is smaller still. They have a tendency to not want to engage properly and the idler teeth are easily ground off if not engaged fully.

What shifter are you using on the Trust? How much power do you have?

Top choice, Piggaz. I'm in the same boat with the OS88 - it will happen eventually.

We ended up with a Quaife/Trust 6 speed straight cut dog box, will be interesting to see how long it holds up.

My money is on the input shaft going first.....

Straight cut is never an option. UNLESS, there is the top gear is helical. Freeway driving is important to a few guys in this thread.

How noisy is it. Can you take some videos?

GTRPSI: Be careful with the reverse gear on the Trust. It's only 18mm wide and the idler gear is smaller still. They have a tendency to not want to engage properly and the idler teeth are easily ground off if not engaged fully.

What shifter are you using on the Trust? How much power do you have?

New reverse gear has been fitted (guess why), and its a H pattern.

PT7175 on a 26/30 with E85, what power i plan to get and what i really get may be 2 different things, so no results to speak of yet as engine bottom end is going through assembly right now.

How noisy is it. Can you take some videos?

Just got it minus the transfer case, im going to rearrange the plates in our old transfer case (transfer case mod) and bolt it on, its been rebuilt, sitting near me right now waiting for the new engine to be finished.....

Spent yesterday gaping the rings, bottom end should be assembled next weekend when i find some time.

Not intended as a daily, more a 1/4 mile and Saturday night special, just put some ear plugs in if too loud. :)

Edited by GTRPSI

I was leaning towards a PPG straight cut dog box.. thoughts on that one?

A lot of people use them with what seems great success. That second gear is almighty tall though.

The BC Automotive GTR was using one.

GTRPSI, I would suggest you get a gear shift lever made up as the stock bush type one doesn't help reverse (the main reason they get damaged).

Can you elaborate on the getting a gear shift lever made up?

I was unaware of that issue....

Thank your your wise words.

Will hunt for the clip later tonight. :)

  • 1 month later...

What are the options as far as straight cut dog boxes go?

I found a PAR dogbox for sale on ebay that was going pretty cheap, but apparently PAR's boxes are shit.

I hear Quaife/Trust are pretty good, but parts are hard to source.

And of course PPG, which are good but pricey.

Any other options out there?

I went out and spoke to Terry at Award A few months ago. He said there are two new options for us. Both are dog boxes and 6 speed I believe. That's all the info I have. It might be worth while giving him a call as he said he will have more info soon.

Apart from those two and what you have mentioned, I haven't found anything that stands out.

Found this on eBay, is that what they are worth?

http://www.ebay.com.au/itm/Nissan-R33-Gtr-Rb26-PPG-5-Speed-Straight-Cut-Dog-Box-/321456969727?pt=AU_Car_Parts_Accessories&hash=item4ad85417ff&_uhb=1

I am not putting out astronomical power (under 300kw) so other than advantage of quicker shifts I am having trouble seeing the value in spending over $8k on my gearbox. Yet, I still want one :ph34r:

I found a PAR dogbox for sale on ebay that was going pretty cheap, but apparently PAR's boxes are shit.

I hear Quaife/Trust are pretty good, but parts are hard to source.

I contacted Quafie and they put me onto the people who they made the boxes for, all parts are still avaliable, they also told me each part internally has a part number stamped on it, you just contact them with the part number, so to make it clear everything is still avaliable for the boxes and they also made it clear that they will continue to support parts for them.

Quaife Engineering made the boxes for Trust Japan originally. And yes, they have plenty of stock for all major parts.

Piggaz, Holinger and the OS88?

A copy of the email from the people who Quafie directed me for parts....i was chasing a bigger input shaft for ours for drag racing.

Hi Peter

I'm not sure I have much to tell you in a positive way, sorry !
We made that kit between 1992 and 2001, there were many changes made to it over the years, Here is a short answer to your questions ;
1. yes, we can still supply all the parts. The easiest way to quote, is to give me the part no. from the old item. Most of them start E3F1 and then two or three more digits, Numbers are stamped onto nearly everything apart from small parts and bearings
2. Bear in mind this kit fits into the stock casing This means gears are stock diameter. It also means ultimate power handling is restricted Probably to about 750 hp at the flywheel. We have a much newer much stronger sequential 6 speed far more capable of power in the 1000hp area. In my opinion, unless you have less than 750hp and dont mind a potential waiting time for spare parts then you are wasting your time with this kit. It was made so as to achieve 300kmph in time trials in Japan, not as a drag race or high strength kit. Anybody claiming to handle more than that power through stock diameter gears is talking BS. There is at least one manufacturer out your way claiming that !!
Hope I can help you further
kind regards
Website...
Though i might share some info from the horses mouth about the 6 speed H pattern Quaife/Trust Dog boxes. :)

Part of the reason I am looking at a dogbox is they are supposedly 'stronger' than a regular gearbox as they can take more power etc. but the more I hear about them the more temperamental they sound and it seems like the running costs don't get any less after the initial outlay.

After buying a dogbox, what sort of dollars are required to maintain it once it's in? Does it matter that I'm not running a lot of power?

I have used a ppg dogbox in a commodore cup around Wakefield and it was awesome, so I know the benefits when driving with one. It's just for $8k I could buy 8-9 regular gearboxes :P

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now



  • Latest Posts

    • Well, that's kinda the point. The calipers might interfere with the inside of the barrels 16" rims are only about 14" inside the barrels, which is ~350mm, and 334mm rotors only leave about 8mm outboard for the caliper before you get to 350, And.... that;s not gunna be enough. If the rims have a larger ID than that, you might sneak it in. I'd be putting a measuring stick inside the wheel and eyeballing the extra required for the caliper outboard of the rotor before committing to bolting it all on.
    • OK, so again it has been a bit of a break but it was around researching what had been done since I didn't have access to Neil's records and not everything is obvious without pulling stuff apart. Happily the guy who assembled the engine had kept reasonable records, so we now know the final spec is: Bottom end: Standard block and crank Ross 86.5mm forgies, 9:1 compression Spool forged rods Standard main bolts Oil pump Spool billet gears in standard housing Aeroflow extended and baffled sump Head Freshly rebuilt standard head with new 80lb valve springs Mild porting/port match Head oil feed restrictor VCT disabled Tighe 805C reground cams (255 duration, 8.93 lift)  Adjustable cam gears on inlet/exhaust Standard head bolts, gasket not confirmed but assumed MLS External 555cc Nismo injectors Z32 AFM Bosch 023 Intank fuel pump Garret 2871 (factory housings and manifold) Hypertune FFP plenum with standard throttle   Time to book in a trip to Unigroup
    • I forgot about my shiny new plates!
    • Well, apparently they do fit, however this wont be a problem if not because the car will be stationary while i do the suspension work. I was just going to use the 16's to roll the old girl around if I needed to. I just need to get the E90 back on the road first. Yes! I'm a believer! 🙌 So, I contacted them because the site kinda sucks and I was really confused about what I'd need. They put together a package for me and because I was spraying all the seat surfaces and not doing spot fixes I decided not to send them a headrest to colour match, I just used their colour on file (and it was spot on).  I got some heavy duty cleaner, 1L of colour, a small bottle of dye hardener and a small bottle of the dye top coat. I also got a spray gun as I needed a larger nozzle than the gun I had and it was only $40 extra. From memory the total was ~$450 ish. Its not cheap but the result is awesome. They did add repair bits and pieces to the quote originally and the cost came down significantly when I said I didn't need any repair products. I did it over a weekend. The only issues I had were my own; I forgot to mix the hardener into the dye two coats but I had enough dye for 2 more coats with the hardener. I also just used up all the dye because why not and i rushed the last coat which gave me some runs. Thankfully the runs are under the headrests. The gun pattern wasn't great, very round and would have been better if it was a line. It made it a little tricky to get consistent coverage and I think having done the extra coats probably helped conceal any coverage issues. I contacted them again a few months later so I could get our X5 done (who the f**k thought white leather was a good idea for a family car?!) and they said they had some training to do in Sydney and I could get a reduced rate on the leather fix in the X5 if I let them demo their product on our car. So I agreed. When I took Bec in the E39 to pick it up, I showed them the job I'd done in my car and they were all (students included) really impressed. Note that they said the runs I created could be fixed easily at the time with a brush or an air compressor gun. So, now with the two cars done I can absolutely recommend Colourlock.  I'll take pics of both interiors and create a new thread.
    • Power is fed to the ECU when the ignition switch is switched to IGN, at terminal 58. That same wire also connects to the ECCS relay to provide both the coil power and the contact side. When the ECU sees power at 58 it switches 16 to earth, which pulls the ECCS relay on, which feeds main power into the ECU and also to a bunch of other things. None of this is directly involved in the fuel pump - it just has to happen first. The ECU will pull terminal 18 to earth when it wants the fuel pump to run. This allows the fuel pump relay to pull in, which switches power on into the rest of the fuel pump control equipment. The fuel pump control regulator is controlled from terminal 104 on the ECU and is switched high or low depending on whether the ECU thinks the pump needs to run high or low. (I don't know which way around that is, and it really doesn't matter right now). The fuel pump control reg is really just a resistor that controls how the power through the pump goes to earth. Either straight to earth, or via the resistor. This part doesn't matter much to us today. The power to the fuel pump relay comes from one of the switched wires from the IGN switch and fusebox that is not shown off to the left of this page. That power runs the fuel pump relay coil and a number of other engine peripherals. Those peripherals don't really matter. All that matters is that there should be power available at the relay when the key is in the right position. At least - I think it's switched. If it's not switched, then power will be there all the time. Either way, if you don't have power there when you need it (ie, key on) then it won't work. The input-output switching side of the relay gains its power from a line similar (but not the same as) the one that feeds the ECU. SO I presume that is switched. Again, if there is not power there when you need it, then you have to look upstream. And... the upshot of all that? There is no "ground" at the fuel pump relay. Where you say: and say that pin 1 Black/Pink is ground, that is not true. The ECU trigger is AF73, is black/pink, and is the "ground". When the ECU says it is. The Blue/White wire is the "constant" 12V to power the relay's coil. And when I say "constant", I mean it may well only be on when the key is on. As I said above. So, when the ECU says not to be running the pump (which is any time after about 3s of switching on, with no crank signal or engine speed yet), then you should see 12V at both 1 and 2. Because the 12V will be all the way up to the ECU terminal 18, waiting to be switched to ground. When the ECU switches the fuel pump on, then AF73 should go to ~0V, having been switched to ground and the voltage drop now occurring over the relay coil. 3 & 5 are easy. 5 is the other "constant" 12V, that may or may not be constant but will very much want to be there when the key is on. Same as above. 3 goes to the pump. There should never be 12V visible at 3 unless the relay is pulled in. As to where the immobiliser might have been spliced into all this.... It will either have to be on wire AF70 or AF71, whichever is most accessible near the alarm. Given that all those wires run from the engine bay fusebox or the ECU, via the driver's area to the rear of the car, it could really be either. AF70 will be the same colour from the appropriate fuse all the way to the pump. If it has been cut and is dangling, you should be able to see that  in that area somewhere. Same with AF71.   You really should be able to force the pump to run. Just jump 12V onto AF72 and it should go. That will prove that the pump itself is willing to go along with you when you sort out the upstream. You really should be able to force the fuel pump relay on. Just short AF73 to earth when the key is on. If the pump runs, then the relay is fine, and all the power up to both inputs on the relay is fine. If it doesn't run (and given that you checked the relay itself actually works) then one or both of AF70 and AF71 are not bringing power to the game.
×
×
  • Create New...