FD gear box and high rpm shifting

[Grant Monkhouse]

This is what I have done


I per powerfully left it protruding like like so I can extend it out and bolt it too the chassis and possibly hold the exhaust up into the tunnel if there\'s room.

Think I have got a picture of my other bracket/brace somewhere too. Even though its for my rx4 I bet I could use/make something similar on an FD and get rid of the ppf and make a beefier diff brace/girdle.

[Grant Monkhouse]

Here\'s what I made for the rear of the box

[Ed_RX7parts]

all looks cool...would love a larger billet sump though...just thinking why no one has done it tbh?........casing also being noted as a weak point...in hindsight maybe i should have done tnat aswell as a precaution....oh well only time will tell. in the meantime a sandwich plate seems like a relatively inexpensive way of adding some sxtra strength as well as fluid capacity to the old girl!

[Richard.C]

Ed, there\'s a couple of billet gearbox sumps on RHD from the usual RX7 tuners.
 
Richard
 
 

all looks cool...would love a larger billet sump though...just thinking why no one has done it tbh?........casing also being noted as a weak point...in hindsight maybe i should have done tnat aswell as a precaution....oh well only time will tell. in the meantime a sandwich plate seems like a relatively inexpensive way of adding some sxtra strength as well as fluid capacity to the old girl!

[Ed_RX7parts]

thanks for the heads up mate....i\'ll have a gander.

[Richard.C]

Attain or Feed.

http://www.rhdjapan.com/attain-extra-large-transmission-oil-pan-fd3s-fc3s-21229

[Grant Monkhouse]

So I have order this book, worth having a look at and read. I will post up on here anything useful I find in the book and any other info i come across from other sources
http://www.amazon.co.uk/gp/aw/d/0760320470/ref=mp_s_a_1_fkmr0_1?qid=1370954200&sr=8-1-fkmr0&pi=SL75

[Grant Monkhouse]

Right iv come across a relatively cheap way to upgrade the stock box. There\'s a thread on rx7club that gives possible upgrades for the FD box, all are expensive apart from this option.

1350-2500 dollars. This gets you a larger Input shaft polished gear and synchros for smoother shifting, full rebuild. This option is being used by a guy on his 20B track car, 650whp 500rwtorque! For a full dog box race box it\'s the higher end of the price range.

So for £800, plus shipping you can get an awesome rebuilt gearbox that shouldn\'t break for a long time. And especially with most of us mere mortals only running 2rotors it looks like a good option.

I will email the people that do it and post up any replies I get.

I know people like CJR and possibly Clive would be interested in this, especially at the rate CJR has gone through boxes like a fat kid through cake. Now he has a powergains half bridge motor and Jay mapping it I imagine he will be buying up all the spare boxes around.

[Grant Monkhouse]

Just pulled these prices off their website

[Grant Monkhouse]

From their website on what they do/change with the gears.

[C J R]

Interesting stuff Grant and Ed.
 
I\'m obviously interested what this investigation concludes.
 
For my next box swap I managed to source a late FD box with low miles. A good friend had it stripped by a gearbox specialist and the gears de burred.
 
I have another box as a spare, so depending on your investigations I may look at upgrading that one.
 
Other plans will result in the motor putting out more hp for next year, so I need to find a solution that lasts longer than two day track sessions.

[Grant Monkhouse]

Interesting stuff Grant and Ed.
 
I\'m obviously interested what this investigation concludes.
 
For my next box swap I managed to source a late FD box with low miles. A good friend had it stripped by a gearbox specialist and the gears de burred.
 
I have another box as a spare, so depending on your investigations I may look at upgrading that one.
 
Other plans will result in the motor putting out more hp for next year, so I need to find a solution that lasts longer than two day track sessions.

Which option would you be looking at? Would you want to go full bore dog ring or just upgraded shaft and internals too keep it as a road car/track car?

Just going to send them an email now.

[C J R]

Prob the uprated shaft and internals.
 
What are you thinking of ?

[Grant Monkhouse]

The same. Iv sent them an email. Hopefully hear back soon. It\'s just a shame it\'s probably cheaper to send a gear box too the states, have the work done and have it sent back for cheaper than it would be to have a company here in the uk do it:(

[Grant Monkhouse]

The faceplates gears look awesome though. No maintenance required