4G62B and 4G52B , 4G54B throttle body questions

volks · **Posted:** Wed Jun 17, 2009 8:16 pm

Hi, i'm newby here at J.N.C. i very much appreciate the technical forums here for quite a while now,,,

so here's my question;

does the 4G52B Starion engine has the same throttle body as for 4G62B Lancer Turbo,,, they seem to be similar throttle bodies,
coz I'm searching for replacement injectors for my 4G62B engine and i could only come across with Starion replacement injectors..

please advice, more power to Japanese Nostalgic Car..

volks

volks · **Posted:** Wed Jun 17, 2009 8:18 pm

4G62B from Lancer Ex turbo

4G52B

comparison does it share the same throttle body?

RedSunday · **Posted:** Thu Jun 18, 2009 12:02 am

Ummm, none of those engines are 4g52, looks like a 4g63 and a 4g54 at the bottom.

redzone · **Posted:** Thu Jun 18, 2009 4:12 am

4G6XX engines are belt drive cam

4G5XX engines are chain drive cam

the 4G62B lancer/cordia turbo engine has smaller injectors than the 4G63B starion engine.

look on ebay australia for someone selling a pair of cordia turbo injectors!

Old Colt · **Posted:** Thu Jun 18, 2009 6:01 am

All of that series of throttlebodies I have come across have been the same 46mm castings. The flow ratings of the injectors will be different between most of the engines.
You should be able to swap injectors to get what you need, they will all fit.

volks · **Posted:** Thu Jun 18, 2009 8:32 am

thankyou for your reply Oldcolt,

i guess my dilema has just started for hunting G62B injectors,, hope you can post me the link , on ebay australia who's selling g62b injectors...
does the flow rate will be a huge issue if i use a starion injectors on G62b engine?
pardon my ignorance,,, coz i'm still in a process of learning, its my first time to restore an ECI, nostalgic car...use to be a weber carb. user..

here's my Lancer EX turbo project....

Old Colt · **Posted:** Thu Jun 18, 2009 10:16 am

Oh that is going to be a real clean car, very nice. with your second picture I was thinking you were swapping into the Mazda.

The Starions that are near you with the G62B in them should be fine, the American Starions before 1987 that have two black injectors also should work, in 87 they went to a primary/ secondary injector and are not compatible with the early electronics. Although two of the primary injectors could work, not proven though.

volks · **Posted:** Thu Jun 18, 2009 11:19 am

@ old colt,
i guess , have to try to see how it works,,,one last question, i recently acquired a starion ECU, that looks like a Lancer EX turbo ECU, coz it has the same pins and socket , would this be a good combination with a Starion injector and Lancer Ex turbo throttle body?

the miata on the picture is a just customer car, where i had my G62B rebuild , sorry for the confusion,,,,,
once again i appreciate your replies,,,,

Old Colt · **Posted:** Thu Jun 18, 2009 11:31 am

The Starion ECU might have different pinouts. You need to be careful swapping the ECU until you check each pin for what they do. Each year of the Starions over here has a bit different ECU and they do not swap without moving a wire or two.
If you have the wire diagrams for each you can go over them, pin by pin to check compatibility.

We have two Maitas in this area with RB20 Nissan swaps. I need to get another Miata and swap in a 4G63 turbo. But my wife wants AWD in a Miata.

volks · **Posted:** Thu Jun 18, 2009 11:37 am

Old Colt wrote:

The Starion ECU might have different pinouts. You need to be careful swapping the ECU until you check each pin for what they do. Each year of the Starions over here has a bit different ECU and they do not swap without moving a wire or two.
If you have the wire diagrams for each you can go over them, pin by pin to check compatibility.

We have two Maitas in this area with RB20 Nissan swaps. I need to get another Miata and swap in a 4G63 turbo. But my wife wants AWD in a Miata.

that would be a wicked miata if its done,,, hehehehe, o yes my builder told me the miata engine's even with the turbo upgades are still no match with a mitsu g62b ... goodluck on your project...old colt..

ecu pins noted...cheers

Old Colt · **Posted:** Thu Jun 18, 2009 11:56 am

To me an 1800 Miata with a turbo makes a nice daily driver. A Miata with a swapped engine becomes a serious playtoy.

city hunter · **Posted:** Fri Jun 19, 2009 1:57 pm

Old Colt wrote:

All of that series of throttlebodies I have come across have been the same 46mm castings. The flow ratings of the injectors will be different between most of the engines.
You should be able to swap injectors to get what you need, they will all fit.

I agree with charlie. Other than the early style type 1 fuel injection from the early starions which had a larger throttlebody with a weird injector setup. All the later injector setups including the 4g32 turbo are 46mm.

4G62B and 4G52B , 4G54B throttle body questions

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