The JDM boxes are the ones to get (DC5 integra), as they also include an LSD. The ratios are only marginally better though. But no, they are not easy to find. They also cost ���� and will have a fair few mile son it. I think they around �2.5k new.
This was the other problem with the conversion kit, why spend thousands on the conversion to then put a second hand box in the car. At least when you install the jubus, you get the C64 refurbished at the same time.
Don’t forget the oil cooler if you are using it on track 
…and how many heat related failures have we had!?
So you think that a gearbox casing that is too hot to touch is how its meant to be?? Or that all the gearboxs we have apart need at least one bearing because its gone a funny blue colour?
Agreed heat isn’t the main issue, but it certainly not helping things.
That just proves that it has lack of and or poor quality oil in it. Look at some of the temps the R35 skyline reach!
Anyone running decent power would not wanted over load the cooling systmes as it is. I already have got charge cooler, ac and water rad up front. On track, temps are already become a little bit of a problem when pushing hard. Moving the oil coolers to laminova (for the GT3 conversion) is proving a problem, and adding a gearbox cooler would just make things even worse!
Curiously - do you actually build the gearboxes yourself inhouse?
[quote=N17VES]not heard of any jubus breaking…!
The E153 is way way too long, regardless whether its on the road or track. I downloaded some software when I was looking into this over a year ago that did the calcautions. You basically input your dyno figures, gear ratios shift time, rev limit etc, and it calculated the performance figure. The E153 made the car considerbaly slower!!
Also proved actually the C64 had better ratios that the honda box, unless you went for the JDM one.
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Trust me they have broken, as for your software racing I still say the E153 is the right gearbox f you are going for 300whp and above. It’s been three years now and not one Lotus owner in the states wants to put their car up against mine on track… These same so called racers are the guy stating the gears are too tall…
If you want to waste time and torque keep shifting with your short gears but if you want faster lap times build the drivetrain the right way…
If you want to build a car on your lap top stick with your short gears and lack of power much like Lotus and their last GT3 attempt and the Lotus racers here that get passed by those tall geared Porsche and Corvetts…
Seriously you are not racing and there are no rules so why believe the bullshit being sold to you ?
Normally send them away, but have been there when taken apart when have waited for them to be sorted - normally Jubu gears/diff going in.
Interesting on the GTR temps, what are they seeing? Although, they are designed for the purpurse that they are being used.
All the gearbox people we know, say 120 degrees ish is a max, as the plastic cages in the bearings are the first parts to go soft above that. The oil can cope with much more than that before it breaks down. At Spa we were seeing 110 ish before thinking that was enough and turning on the pump to cool things down. The other thing we have noticed, is that the slightly vague shift after a couple of laps without the cooler, doesn’t occur with the pump on. Draw your own conclusions.
If the cooling system can’t cope, add more radiator capacity, faster pump, better inlet/outlet, higher pressure cap, there is always a solution to high water temps.
[quote=N17VES] On track, temps are already become a little bit of a problem when pushing hard. Moving the oil coolers to laminova (for the GT3 conversion) is proving a problem, and adding a gearbox cooler would just make things even worse!
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Have you seen Frank’s oil cooler position, I was going to do the same till I realised I lacked equipment and talent to make the brackets, then never pursued it any further, it really might fix you problem
Then run the laminova for the geearbox
PS if you don’t have a triple pass rad get it modified it is worth a few degrees as well…
GTRs in my experience reach 130 degrees on track after not a lot of use. They fit a forge gearbox cooler to help keep the temps low. The issue is oil breakdown on that car rather than mechanical failure. The oil make is a sticking point as Nissan charge about �600 for the gearbox oil, but some of the aftermarkets have proven that cheaper oils are as good if not better, but Nissan are very particular in relation to the warranty claims for gearbox failure. Datalogs record peak transmission temp, and if it exceeds 130 they insist on it being changed within a limited time period. It used to be 120, until the GTR owners club campaigned.
Mine has never been above 110, but then mine has never been on track.
double post.
Scuffers once posted a picture of what looked like a double laminova, one side of engine the other box. Surely thats a neat solution for a gearbox cooler.
Does mean you need a front rad thats man enough.
Did I mention that the E153 gearbox has it’s own oil pump and oil cooler ?
I thought that temps weren’t the problem though Frank?? 
They aren’t since the standard E153 has the cooling lines in a short loop allowing the fitting of a cooler for competition or extreme climates…
I chose to fit a cooler since I’m in So. Cal. and I had had one sitting around… :whistle:
Please stop mentioning So Cal, some of us are struggling to come to terms with the cruel hand god dealt us.
If only I’d married the right girl, I could be ditching my inlaws and living it up in Newport Beach. 
Eh no canyons in Newport Beach, it did rain here yesterday but it’s over now…
Can you post a picture of your rear mounted engine oil cooler, I have always thought about copying this and it might fix the lack of front oil cooler problems in the GT3 body
[quote=Adamantium]Please stop mentioning So Cal, some of us are struggling to come to terms with the cruel hand god dealt us.
If only I’d married the right girl, I could be ditching my inlaws and living it up in Newport Beach. [/quote]
I’m still trying to find Bumfuck on google maps 
It’s just east of LA, look for the brown spot on the map…
Here’s the engine cooler the gearbox is on the other side…
http://www.lotussport.org/viewtopic.php?f=7&t=4059&hilit=oil+cooler
[quote=frank]It’s just east of LA, look for the brown spot on the map…
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GLOL