How\'s this for an idea

[FD3S Efini]

Ok I\'m going away again in august to a nice sandy place and when I return I was looking at getting my FD converted to single turbo, but looking at the amount it costs for all the parts and labour it will be a little out my budget

So I have thought of a happy medium until I can save for a single turbo,

What I want to do is setup the car pretty much ready to bolt on the single turbo this includes porting, fueling, updated ignition system, cooling and a few other things,

Now the plan is when I return to get the car bridgeported and rebuild the standard turbos and get them ported and then run a non sequential setup for the future until I have enough funds for a really decent turbo kit, this way the car will pretty much be ready to convert to a single,

I have been out in a car with the current setup and it was awesome so much power considering it was the standard twins and quick spool up aswell,

What are your opinions on this?

Kris

[m1tch]

Phil is selling a BPed engine, might almost be worth checking that out first, build the engine up and then swap engines over and sell the original?

http://www.mazdarotaryclub.com/forums/showthread.php?t=68745

[FD3S Efini]

Iv seen that engine and I would love to buy his engine but funds don\'t permit at the moment that is why I\'m planning this for later in the year and wanna get everyones ideas and concerns and possibly any issue I may run into during the process

Cheers

Kris

[RobMatthews]

depends how attached you are to your fd but, sell the current one and buy one with all the mods already done?

[FD3S Efini]

I wouldn\'t wanna sell my rx7 and get another already done because I would like to be in on the build and be I volved in it and make decisions and changes as they come, I know selling up and buying a single turbo FD would be cheaper but I would prefer to build it rather then buy one already made this way I m ow exactly what has gone on and during the build

Kris

[Nik da Greek]

I think a ful bridge will probably overwhelm the stock turbos tbh but better minds than mine can probably answer this more definitively. Sequential won\'t alter the sheer amount of gas they have to deal with and there\'s a limit to how much you can "port" them (not sure what you think can be ported anyway, do you mean the wastgate area?). IMHO non-seq gives you the worst features of a single and none of the benefits of a twin, but that\'s just my 2p.

[FD3S Efini]

I went in a drift car with a very similar setup and it seemed to hold the power pretty well and the spool up was really fast and constant all the way through the rev range but I\'d like to see other peoples views on this, will the turbos be under more stress causing them to become less reliable or will it be ok?

Kris

[Nik da Greek]

Well, to be more specific on my original answer I think you\'ll get huge boost creep because the wastegate and stock turbo assembly won\'t be able to get rid of the increased gas from a bridgeport and you\'ll end up with horrific boost control problems not to mention frying the poor little stock tubbies.

Leaving that aside, and not being funny, but are you certain you need all the downsides of a bridge just to run your desired dream single turbo setup? Most turbos short of monster spec will be spooled perfectly well by a decent streetport without all the problems that a bridge brings ie rubbish idle, oil contamination from exhaust ovelap terrible emissions etc etc. If you\'re building something competition spec then fair enough, but if its a road setup you may be overkilling things to no real benefit.

[FD3S Efini]

It isn\'t guna be competition spec or anything like that it will be my weekend plaything track toy and hopefully when I get into it my drift toy aswell, the bridge for me will be good later on aswell coz it gives me more choice for a turbo spec and also it just sounds awesome

[m1tch]

Sorry, as soon as I found that link to the engine I had to buy it lol

[FD3S Efini]

awesome thats guna be nice in your FC be good to see the results
 
Kris

[FD3S Efini]

anyone else have any ideas of problemns that may come up?
 
Kris

[BlitzBoy]

If you are planning to do track days then a Bridge will be too loud for most tracks, plus BP on Twins = NO unless you like heat and the twins lasting all of 5 minutes, unless you want to run Bean port lmao.

You only need BP if you are running a very large turbo, a good street port will spool up most turbos quite well and keep the driveability, on my old T04Z setup with a good street port I got 450 rear wheel hp at 1.3 BAR

[BenLewisMav]

If you want the sound that much kristoph you could go for a half-bridge. As you\'re going to be using it mainly as a road car (unless I\'m mistaken) I think this would be the best option to get what you want and be more futureproof.
In terms of the stock twins, yes you can get more out of them by improving the flow through them + removing the restrictions, and porting the wastegate to control the boost a bit. aswell as massively simplifying the whole setup. However it is going to reduce the lifespan of them and theres not really much you can do about that (mainly down to heat). Fine if you are planning on upgrading later though.
edit. Oh and plus if you convert to fully non-seq, the control systems for a single turbo will already be a place, so its just a case of buying a turbo kit (downpipe, manifold, turbo, oil/coolant lines) then possibly tweaking the fuelling setup (-as you mentioned that you would be sorting out a secondary rail, injectors, fpr, fuel pump etc for the non-seq)

[dthebuk]

before you go bridge port it might be worth giving this thread a read
http://www.mazdarotaryclub.com/forums/showthread.php?t=66366