FD3S Rebuild: Take 1

[scooby_si]

was guna take pea then outa the thing but then strangely a strange figure appeared at the door, didn\'t know you had a twin? http://www.smileycentral.com/?partner=ZSzeb008\' target=\'_blank\'>http://smileys.smileycentral.com/cat/15/15_8_109.gif\' border=0> pmsl
Congrats thou bud good stuff :god
Si

[Pete C]

Excellent thread and great pictures - congratulations!

I was getting bored of the sight of the inside of piston engines

[Wav]

I have now put up all the rotary rebuild stuff onto my website, if anyone is interested then check it out. Obviously me being a car geek there is some other rotary and car related stuff on there too e.g. rotorstock 2004 pics.

Wav\'s Rotary Rebuild

Enjoy,

Paul:bandit

[Martiny]

Well done, guy.

An inspiration to those who want to have a go themselves. Great pictures, and a good reference. If you are going to do it yourself, also get the video by Bruce Turrentine.

[Gefunk]

Its a great site, and that video sounds spot on, going to order mine this weekend

Gav

[Wav]

Originally posted by Gefunk
Its a great site, and that video sounds spot on, going to order mine this weekend

Gav

Good good, the video is extremely helpful, but you will still need to follow the mazda workshop manuals for torque figures and for another point of quick reference.

Also thanks for the kind words about the site, it\'s nearly there just need to add the coolant change and gearbox oil change to the rotary section amongst a few other non rotor things:cool

Cheers and good luck,

Paul:)

[Gefunk]

Wav,

Hi where can you get the mazda workshop manuals from ?

Cheers

Gav

[Wav]

Originally posted by Gefunk
Wav,

Hi where can you get the mazda workshop manuals from ?

Cheers

Gav

I luv my rx

Paul;)

[Gefunk]

nice one cheers chap

Gav

[FDDreamer]

Wow!! Someone give this guy a medal!! Talk about putting back into the community! Brilliant, concise explanation and great pics to boot. Happy it all works great too!

Quick question though, i\'ve often heard the phrase \'porting\' used in context with the 13B...how does this work? I\'ve read a little about the work done for this on a standard engine, but how does it work on a rotary? Also, there are different \'stages\' it seems, street port/race port for example.

Off to check your site now, appetite well and truly whetted!

Thanks again and good work fella!

[FDDreamer]

Oh...sorry about a bit of post whore-ness here, forgot my other newbie question!

Is it possible to carry out the work you\'ve done without actually removing the \'rat\'s nest\' etc? Can you simply disconnect the appropriate hoses etc then re-connect then after the re-build? Everything looked OK until the relish! :confused:

[Wav]

Glad you like it Mr Dreamer:D

Porting on a rotary works in a similar way to on a boinger, widening/lengthening (increasing the area) the ports allows more air and fuel to get into an engine per stroke and quicker exit of gas out, if the exhaust is ported aswell. However on a rotary there are no vlaves blocking flow hence making the ports and runners bigger has a much more direct effect on the gains, i.e. is a very good way of gaining power in a rotary engine, if of course the engine is tuned and optimised to take full advantage of the porting. But the problem or perhaps gains of porting a rotary is that it will also effect the timing i.e. the longer and/or wider the ports allow the inlet to either/and/or open early or close later again allowing more air/fuel to enter. But this can also cause overlap and loss of low down power.

So basically porting is a pretty complicated business and there are multiple factors to consider. I have never done any porting, but is something I\'d definitely like to try in the future. There are a few different types or extremes of porting and these are summerised on the rotary engine illustrated website.

Ports and types of porting

With regards to the "rats nest", I\'d say that you have to disconnect quite a lot of the pipes in order to get it off and removed from all the adjoining components unfortunately:( However you can leave a few bits left attached. If you\'re put off with doing that bit, then I\'d suggest you convert it to a single tubby at the same time, that way you\'ll get rid of most of the "nest"

Hope that helps a little,

Paul:)

[zevans]

Wav, you da man.

I need one of those keyrings to look at whilst reading that American site though... head hurts. :rollin

[FDDreamer]

Ah i see...another brilliant explanation, makes a lot of sense now. I had it totally backwards, was thinking that without a valvetrain etc it would be something that would yield only minor gains, but after reading about it i can see how the opposite is true! No wonder it\'s such a popular mod, especially for people who are going through a rebuild anyway!

Those green and purple lines are waaay over my head though! :p

Thanks again for clearing that up though! Don\'t have an FD yet (hence the username lol!) but i\'m intent on learning as much as poss prior to getting one, seems to me the only way to have the car is if you are aware yourself as to how to maintain it! Hoping to get a project car reasonably soon, then spend about a year building the car up, then having it to coincide with my 25th birthday (and therefore cheaper classic insurance)!

[grinder]

what a superb read !

and you make it look soooo simple ( but i bet it isnt ! )

i would love to rebuild mine ( when the time comes ) - but i will probably chicken out , throw it away and buy another one

keep up the good work

stu