4G63 2.3Lt timing

[boostoman]

I have installed a 2.3 stroker on my evo 7 .I have been sent a basic .cal file. but the car is not starting the spark plugs are getting too much fuel and getting saturated. can anyone suggest to me what timing I should use for the longer stroke??
I would appreciate your help gents

[boostoman]

atteched is my cal file.

[Madevelopments]

Need some detail on the engine spec and injectors used,
The map you have has a few faults,
Your overall fuel multiplier is wrong,
Your target af table has not been set up,
Your warm up fuel multiplier needs adjusting,
Your Air temp sensor is set for ntc I would have thought you have a Autronic sensor,
I havent got any maps I could send today if no one sends you one I will do tomorrow but it would help with some spec and fuel pressure used.

Mark

[boostoman]

thanks MAD for your help. below are the specs for the engine:

2.3 Lt bushur racing stroker
SARD 700CC injectors

can you give me more details regarding why is the overall fuel multi. wrong.

Thanks

[Madevelopments]

Yours is showing 8.5 if you calulate if as per manuel it should be 6.663 based on 3 bar fuel pressure.
Also your target AF Table is showing 14.7 for the whole table range change it to what you want the target AF to be,
Also I think you will need to add some temp points in the warm up and reduce the amount of extra fuel on this table.

Mark

[boostoman]

thanks Mark for the info. I was wandering you could look at my main ignition table if it looks ok and the cranking ignition timing. does the figures look ok for a stroked engine?

thanks agian.

[Madevelopments]

This will be a better starting map than what you have,
This is a 1000cc injector map converted to your 700cc and was mapped to over 2bar boost on UK 99ron fuel, I would expect you to have to take about 2dg ignition out of the map,
Do check the map correctly when you use it for safety.

Mark

[boostoman]

Mark,

Thanks for the cal file. I'll try it out and let you know.

thanks again.

[boostoman]

Mark,

I tried out the *.cal file you gave me and the engine started for abit but it was not able to turn on again. I cleaned the plugs but it seems like there is too much fuel going in. Is it ok to use the stock plugs (NGK Heat 7) for a higher compression motor and the stroker? is there anyway i can find out why there is no ignition in the cylinder.

thanks in advance

[sss7556]

Mark,

I tried out the *.cal file you gave me and the engine started for abit but it was not able to turn on again. I cleaned the plugs but it seems like there is too much fuel going in. Is it ok to use the stock plugs (NGK Heat 7) for a higher compression motor and the stroker? is there anyway i can find out why there is no ignition in the cylinder.

thanks in advance
===
I had same problem with cold start on evo9 (sm4+r500, 1000cc/cyl and ngk heat 7) at temp of enviroment around -5 to 10 (12) deg of C.. I had a good start with a new plugs, only! I was changed plugs on ngk heat 6, and all problems was over. I have good start and good warming 2200-1000 rpm's
Alex

[Wroom]

Is it ok to use the stock plugs (NGK Heat 7) for a higher compression motor and the stroker?
Regarding heat range on the plugs for 4G63, general advice for normal pump gas is as follows, (at least for swedish weather conditions and gasoline quality):

Original 280 HP engine should have plugs with heat index 7, or 8 if used mainly very hard.

With power range of about 330-450 HP, these engines should have index 8 plugs, or in some rare cases 9 for hard racing.

For 450 HP and up, depending on a lot of different factors, heat index must be at least 8, and in some very rare cases even up to 10.

Good plugs for 4G63 is either NGK B8EGP or BR8EIX.

Running index 7 plugs on a 4G63 stroker can easily lead to engine damage.

[boostoman]

Wroom,
So your suggesting that anything hotter than 8 will lead to preagnition.

my engine is a 2.3lt and has a compression ration of 9.0:1 which is higher than stock.

[Madevelopments]

I would run the denso IW27 for that spec engine.

[Wroom]

Wroom,
So your suggesting that anything hotter than 8 will lead to preagnition.
Not at all neccessary. You will probably first overheat the plug, which will lead to either ignition problems on boost, or mechanic degradation of the plug which can give serious engine damage by itself. Preignition is also frequent, but is not the first problem to occur in theese engines.

Concerning Denso plugs, i have completely ruled them out because of poor quality.
I don't like to pull plugs in service and find them to miss parts of the center electrode isolator, or even worse, the side electrode. And i don't like to find coronas on the outer isolator due to leakage in the plug seal on about every fourth car.
So therefore i only recommend the use of NGK plugs. Unless its for an old lawnmower. Then either of Bosch, Beru or Champion will do. ;)

[Madevelopments]

Not at all neccessary. You will probably first overheat the plug, which will lead to either ignition problems on boost, or mechanic degradation of the plug which can give serious engine damage by itself. Preignition is also frequent, but is not the first problem to occur in theese engines.

Concerning Denso plugs, i have completely ruled them out because of poor quality.
I don't like to pull plugs in service and find them to miss parts of the center electrode isolator, or even worse, the side electrode. And i don't like to find coronas on the outer isolator due to leakage in the plug seal on about every fourth car.
So therefore i only recommend the use of NGK plugs. Unless its for an old lawnmower. Then either of Bosch, Beru or Champion will do. ;)

I have used Denso plugs for at least 5 years and never had a problem with any.

Mark

[Cory O.]

I also am looking for the correct plugs to run, this is the car's current spec.

2.3l 4G63, MSD-DIS2 ignition amp, 300M coil on plug kit etc. The car is running 96lb/hr injectors and we're expecting will be somewhere in the 600whp range. I'm thinking of running standard BR9ES plugs, or if I could get away with it maybe the BR8ES plugs. Any input?

[Wroom]

I'm thinking of running standard BR9ES plugs, or if I could get away with it maybe the BR8ES plugs. Any input?
The ES-plugs may give you trouble. They are not built to handle 300 HP/Litre output.

Try B8EGV or B9EGV for CDI use.
These are racing plugs developed for Porsche to be used with CDI.

Avoid platinum and iridium plugs for CDI.

And avoid platinum plugs for alcohol fuels.

[RAC]

What about Autolite racing plugs. I've had good luck with the ar3934.

[Mellberg]

We have tuned alot of engines with Autolite plugs and never have any problems. We use the 3910 in our Protruck engine and some Volvo engines running on methanol.
But with Denso we have several problems with the isolator and other isues.

[gtauto]

The ES-plugs may give you trouble. They are not built to handle 300 HP/Litre output.

Try B8EGV or B9EGV for CDI use.
These are racing plugs developed for Porsche to be used with CDI.

Avoid platinum and iridium plugs for CDI.

And avoid platinum plugs for alcohol fuels.

Wroom,

Just to let you know I have been using BR9ES on my 800hp drag car for 5 years and never had any problems with them at all. I use Aut CDI 500r also together with this plugs.

Well everyone has their choice of spark plugs to use. For me I don't mind using NGK and Denso Iridium. :)

[Cory O.]

Yeah, I'm going to start with using either the BR8ES or BR9ES, if they can't take the heat I'll go the more expensive route. Ignition amp is an MSD DIS2, and if that craps the bed I'll get a Dynatek ARC2 and see how that does.

[greg]

Regarding the spark plugs on 4g63, i am using NGK B8EGV at 320-360 whp , B9EGV at 400 to 450 whp and B10EGV at 700-900 whp cars . I have also test B105EGV but no see any difference with the B10EGV.

Greg

[gtauto]

Just to give you some of my experience on MSD-DIS2 with SM4. Last time I used this combo and somehow I don't know why I could never go pass 8800rpm. I tried everything like adding ignitor between the SM4 and MSD, nothing works. After that I just changed the CDI system to a Autronic 500R and everthing was fine. It passed 9000rpm with no problems. I find that MSD ignition amp is not very reliable. Had a few spoilt unit before I switched to Autronic 500R.:)