3rd Generation Specific (1993-2002) 1993-2002 Discussion including performance modifications and Technical Support Sections.
Sponsored by:

Twins replacement question

Thread Tools
 
Search this Thread
 
Old 04-11-07, 01:15 PM
  #1  
Junior Member

Thread Starter
 
Join Date: Apr 2002
Location: Nottingham UK
Posts: 23
Likes: 0
Received 0 Likes on 0 Posts
Twins replacement question

Hey Guys,

Would really appreciate some solid info and opinions on this.

Here is the story - i imported a JDM spec FD3 a few years back but never had chance to complete the work on it.

So now im trying to salvage the job - i have completely rebuilt the Block and now im a little undecided as to what to do next.

The 'Rats Nest' looks in a terrible mess the hoses are soo old and brittle now i would never put them back in a car. And the twins appear to functional mechanically ok but prolly could use a good rebuild.

I would like to Go Single and eliminate this whole mess - the price of the low end kits aint an issue however the cost of additional injectors, ECU's etc following up with the never ended PITA that is tuning is kinda scaring me off.

So Simple question - Rebuild and replace hosing with upgraded stock.
Or
Is there a single option i can easily and cheaply live with as an alternative.

Really appreciate all opinions and backup links allways a bonus

Cheers guys

NickB

p.s by cheap kits i dont mean some rejected korean hair dryer off ebay
Old 04-11-07, 01:26 PM
  #2  
Lives on the Forum

 
rynberg's Avatar
 
Join Date: Dec 2001
Location: San Lorenzo, California
Posts: 14,716
Likes: 0
Received 8 Likes on 8 Posts
If you don't have emissions, you can do the "simplified sequential". Write up is linked in the FAQ thread.

If you got a small single turbo, you could run it with the stock fuel system but you would still need an intercooler and Power FC (with tuning).
Old 04-11-07, 03:07 PM
  #3  
Full Member
 
evo2fd baby's Avatar
 
Join Date: Jan 2007
Location: va
Posts: 118
Likes: 0
Received 0 Likes on 0 Posts
go single. Period, end of story. look for a used 35r and some used fuel system components(pump.rail,injectors). Twins are nice for less lag, but at the same time a single making 400hp, Making less heat, and no rats nest is preffered in my honest opinion.
Old 04-11-07, 04:59 PM
  #4  
Moderator

iTrader: (7)
 
dgeesaman's Avatar
 
Join Date: May 2002
Location: Fort Kickass
Posts: 12,302
Received 16 Likes on 15 Posts
Originally Posted by Nico
Hey Guys,

Would really appreciate some solid info and opinions on this.

Here is the story - i imported a JDM spec FD3 a few years back but never had chance to complete the work on it.

So now im trying to salvage the job - i have completely rebuilt the Block and now im a little undecided as to what to do next.

The 'Rats Nest' looks in a terrible mess the hoses are soo old and brittle now i would never put them back in a car. And the twins appear to functional mechanically ok but prolly could use a good rebuild.

I would like to Go Single and eliminate this whole mess - the price of the low end kits aint an issue however the cost of additional injectors, ECU's etc following up with the never ended PITA that is tuning is kinda scaring me off.

So Simple question - Rebuild and replace hosing with upgraded stock.
Or
Is there a single option i can easily and cheaply live with as an alternative.

Really appreciate all opinions and backup links allways a bonus
On a budget, I would suggest you buy a Mityvac and test all the solenoids, buy a set of silicone hose (good stuff, not just any old silicone hose), and put the rats nest back together. Follow the vacuum hose diagram that is linked here. Or if you want to be extra sure of good performance, replace the turbo control solenoids (2), charge relief, and charge control solenoids with new mazda parts. Use the mityvac to test the actuators for leaks and stuff and you're on your way. You might consider eliminating much of the emissions stuff in the rats nest to clean things up. While it seems like a complicated mess, now is a very easy time to take care of it. It's much worse when the engine is all put back together.

Re-use the turbos. Unless they were blowing a lot of oil into the intake, rebuilding them is much more touchy than just bolting them back on.

Make sure your FPD, fuel lines, injectors, and injector o-rings are in good shape. Do a leak test as soon as you get enough stuff put together in the engine bay to do it.

For a few hundred bucks, you'll be on the road and enjoying sequential twins. You can always go single later, but that's a few thousand dollars up in cost.

I could try to post some links, but a little use of the keywords I have used here should turn up plenty of info. Also check out the links in the FAQ.

Dave
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
streetlegal?
New Member RX-7 Technical
13
03-17-22 02:46 PM
msilvia
3rd Generation Specific (1993-2002)
28
04-14-16 12:58 PM
alphawolff
1st Generation Specific (1979-1985)
17
11-17-15 05:57 PM
c0rpse
2nd Generation Specific (1986-1992)
1
08-25-15 11:50 PM
Professorpeanutrx7
New Member RX-7 Technical
5
08-15-15 01:38 PM



Quick Reply: Twins replacement question



All times are GMT -5. The time now is 06:29 PM.