Yeah now stop the shaft from flexing…
Turning a sow’s ear into a silk purse by removing ear wax isn’t gonna happen…
This gearbox thing makes me want to get rid of my car, I did want to spend some money on making it quicker but I have already had the gearbox rebuilt.
Had to have a new second gear, its okay now but makes me wonder not to bother.
It’s only done 12k, never been tracked, 2008. Wondering if I could get a trade on a 997 2S…
Why should this be a surprize to anyone ?
You can’t expect a gearbox designed for a 160 whp front wheel drive econobox to take the torque loads applied when it is placed in the rear…
Lotus knows better but the bean counters make the rules…
Why spend all that money on a gearbox, when for not much more you can drop in an audi conversion complete with a suitable 6 speed gearbox?
If you consider ‘not much more’ an insignificant amount, can I be your best friend, please?
Maybe you can adopt me as your much older son… 
[quote=frank]Why should this be a surprize to anyone ?
You can’t expect a gearbox designed for a 160 whp front wheel drive econobox to take the torque loads applied when it is placed in the rear…
Lotus knows better but the bean counters make the rules… [/quote]
The Honda gearbox out of a 160 whp econobox seems to work Ok up to 350 whp.
Did Yamaha design the gearbox as well ?
Ex77
Fair point I suppose.
I just think 5k for a gearbox or 9k for a tfsi 2.0 engine,isn’t such a big jump when you think of what you get back for the supercharged stock engine and possibly gearbox too.
[quote=Exige77][quote=frank]Why should this be a surprize to anyone ?
You can’t expect a gearbox designed for a 160 whp front wheel drive econobox to take the torque loads applied when it is placed in the rear…
Lotus knows better but the bean counters make the rules… [/quote]
The Honda gearbox out of a 160 whp econobox seems to work Ok up to 350 whp.
Did Yamaha design the gearbox as well ?
Ex77 [/quote]
Yeah sure, I hear of all the issues the Honda boxes have and no one ever talks about it…
It’s funny so many guys spend big bucks on conversions and never talk about the issues so that they can save face on the internet… :whistle:
[quote=Adamantium]Fair point I suppose.
I just think 5k for a gearbox or 9k for a tfsi 2.0 engine,isn’t such a big jump when you think of what you get back for the supercharged stock engine and possibly gearbox too. [/quote]
Sadly be more than �9k for the Audi install 
And that’s a stocker setup…
Just fitted two of these Hewland dog engagement gear kits to two C64 gearboxes. One I will test in my car and the other was sent yesterday to the USA for testing.
Will keep you all posted on progress!!
Great stuff Dave …
I’m watching and waiting patiently … my car can’t stay in the garage forever !
Just want to make the right choice .
Turn up the power, I’ve got another E153 just waitin for the bellhousing to be finished…
Keep me informed Dave.
U2U me when you have more info. I’d welcome speaking to you
Straight cut dog engagement would be terrible for a road car!
Going over old ground, but the ratios are far too long on the E153. Posted all the calcs ages ago.
Only realy solution at the moment is the semi-helical jubu 3/4th gear set. Takes the power, and refined enough for a road/track car.
Who the hell said they are too long, maybe they would like to do a little car vs car comparison on track or road…
How are is torque/power gearing wrong ?
Maybe you missed the part about Jubu gears breaking… :whistle:
[quote=frank]Who the hell said they are too long, maybe they would like to do a little car vs car comparison on track or road…
How are is torque/power gearing wrong ?
Maybe you missed the part about Jubu gears breaking… :whistle: [/quote]
Frank for a track car the ratios are all wrong on the E153 unless you have 500+hp which none of us do.
As for the Jubu gears breaking, still had no evidence of this happening, where are these Frank?
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.
Sorry, can you get Japanese domestic gearboxes with any ease? Presuming grey imports that are breaking?
It would obviously still require the conversion kit to be made/working.