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Just An Idea

PandaR33

By PandaR33,
in Engines & Forced Induction

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iseekool Veteran

iseekool

Posted
Posted

Just wondering - I want my car to be setup for lots of torque low down - max power is not much of a concern for me. I want a similar setup to a stock ford XR5 ---> http://www.drive.com.au/Editorial/ArticleD...ArticleID=12454

Is it possible to keep almost everything stock.

My goal is to keep it modest without the need to have too many bits changed. I'm aming for something around 120 to 140rwkw.

Basically the setup I'm "thinking" about is:

- GTT exhaust manifold and a small turbo for quicker spool. (stock turbo??)

- Stock GTT piping to stock GTT SMIC.

- Custom piping from GTT SMIC to the throttle body (the DE is different to the DET - due to the "Y" pipe setup on the DE)

Will the ECU, injectors and fuel pump need to be changed for a modest setup?

How many psi will i need to run to achieve the output I want.

My car is an r34 non-turbo, auto

mad082 Grand Master

mad082

Posted
Posted

to make 120 to 140kw you won't need to run very much boost at all. even 5psi would see you close i'd say.

as for turbo choice, the stock will do nicely. plenty of response. you have to remember that a NA engine will spool a turbo earlier than a turbo because of the higher compression. with the stock turbo you should have full boost by under 2500rpm. on my r33 gts-t (slightly smaller turbo than the r34 turbo) i was making 14psi by well under 3000rpm with the stock turbo.

ecu will need to be altered to take into account the extra airflow. fuel pump would probably be ok (i'm not sure if they are the same pump as a turbo) and it would be good to upgrade the injectors to the stock turbo ones to be safe but the NA ones may cope

N-DAWG Mentor

N-DAWG

Posted
Posted

R34 GT? Injectors are smaller as is the fuel pump. Whether you'll need an uprated fuel pump and injectors for <140kw I'm really not sure, but it's not a bad idea and best to be safe and allow room for expansion later on. I'm really not sure at what point they reach their full duty cycle though.

Once again you'll need to look at how you're going to handle fuel AND timing, being an auto eManage Blue or EMU would be your best choice as you have an auto.

You're after low down response and torque over pure power, so the saying it's the power under the peak power curve that counts holds true here. You want to make the majority of your power down low and in the mid-range of the power band, but you don't really want to sacrifice TOO much top end either IMO. Therefore I think an RB20 turbo would be a bit small... whilst it will spool up quickly, high compression will help that anyway and I think you'll be better off with an RB25 turbo to get a nice balance, not to mention the age of the turbo.

With 3" from the turbo-back w/hi-flow cat and an R33 Turbo, 5PSI is achieveable VERY quickly! Around 2000rpm.

A factory SMIC will bemore responsive, though with high compression turbo you want to ensure adequate cooling, but for 5PSI I think you should be ok.. go with a R34 SMIC as they're thicker and a common upgrade for R33GTSt, and get the duct/shroud to ensure cold air flow to it.

Provided your gearbox is in good condition, I would look at also doing the valve body upgrade to strengthen the box and make shifts quicker, provided it is in good condition though! My box was flaring a bit, and after the turbo conversion it showed me how bad it realy was. After adding more power well it's now in getting completely overhauled. At 5PSI though with a good box you shouldn't have too much problem, though with a torquey set up there's that to consider. SO yes, a good box, valve body upgrade I believe should see you well and make the most of that low down response.

iseekool Veteran

iseekool

Posted
Posted

In regards to the eManage with that be controlling the shifts for the auto or will the Trans control unit be controlling the shifts. I read somewhere that the non turbo variants have a separate ECU and TCU.

N-DAWG Mentor

N-DAWG

Posted
Posted

Your Factory ECU will still continue to function as normal and control shifts, the eManage will remap the fuel map and ignition signals +/- what the tuner sets. Basically the ECU will continue to function oblivious to what's going on, and the eManage takes over to correct it.

  • 2 weeks later...
PandaR33 Enthusiast

PandaR33

Posted
  • Author
Posted

now have most of the parts needed. Front mount. stock manifold and turbo, down pipe, ecu, injectors and bosch 040 fuel pump just need cooler pipeing and braded lines. got a realy good price to. $600 for the lot.

will have have to chase up a loom or can i use my own?

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