http://www.youtube.com/watch?v=XJIrG6IL2Qc

clip from my 11.9

 

With the ignition coils being a weak point, i decided to try a low cost option.
I went down to the wreckers and got a set of Honda K20a Coils from an iVTEC engine (civic/integra).
I wired them up, and plugged them in.
Started up first time, car runs mint, no missing etc. This is on started computer so they are hooked up as wasted spark at the mo.

Dyno results before/after yet to come.
I'll swap them out with the standard coils and see if they actually make/lose any power.

This is a super low cost option to the commercial ignition systems. Guys in the US run these coils on their 900hp Hondas, so should be fine for the power.

Ended up costing me $250NZD (about $170USD) for coils, but you could get much much cheaper from forums etc.

I've tried this option because i'm going to be running a Link G4 ECU, so i wanted to run sequential spark. So i thought i'd test out the coils with the stock ECU to see if it's a viable alternative.

Cheers, Mike

 

how do those coils fit? do they hide under stock cover? best way to see if they work is open spark gaps till you get a misfire on stock coils. then use the honda coils and see how much wider you can go before it breaks up again.

 

true, will try the plug gap change.

they are long boots, so you can't put the standard cover on it. you could easily cut it though (which i might end up doing) to the correct height so they can fit under the cover, but i'm not worried about it.

i'll put up some pics later.
it's still looking gash as, with the raychem wiring i used from work etc, worth a laugh

 

pic from my gash setup (still not completed)



I tried using BR7ES plugs, increasing the gap until i got missfires.

With standard coils, i got them to 0.060 (1.5mm) and still no missing.
it was wasting alot of my time, so i gapped them to 0.090 (2.25mm) so i knew they would fail.
2nd gear pull was still pretty clean.
i jumped onto the motorway, and 4th gear was missing quite badly, but nowhere near as bad as i thought it would. At 0.090 thou gap i didn't even expect it to accelerate.

I pulled over and put the Honda K20a coils in.
4th gear acceleration was greatly improved, no violent missing. Only the slightest hesitation.

That evidence might be a bit soft, but i'm happy. It means when i wire in the Link G4 ECU then i can run full sequential ignition (wasted spark in the pic).
I'm also not 100% sure if the coils are charging 100%, i can check that on the dyno by changing the dwell time (if the Link can control that).

Cheers, Mike

 

Ran a 11.75 @ 188kph (117mph) at the drags last night, 1.78 60ft times.

 

It's been a while since i've updated this.

Link G4 extreme ECU has been installed. Car made 270kwatw with 23psi boost on the FP Red.

My Mivec head has arrived into the country, just waiting on customs to clear it.
I've got all my parts for the 2.3 stroker kit to be built in the next couple of months.
The Link G4 will be controlling the Mivec etc.

I'm looking at going water to air intercooler route for the new engine setup, there just isn't enough room for a good intercooler without completely chopping up the front of the car. And i want it to be as stealth as possible.

I did some testing on the external wastegate setup too, and with the internal wastegate on it's much much more responsive. Max boost in 2nd gear went from 5000rpm to 4400rpm just from that. So i need to change my wastegate setup.
Hopefully with the stroker and mivec and FP Red, this car should make 320-350kwatw and be really responsive.

XP8 carbotech brake pads and DBA 4000 series disc rotors will be fitted soon, i'm in need of a serious brake upgrade.

The custom clutch/pressure plate combo is working good, but i'm still slightly getting lockout at high rpm shifts, especially 1st to 2nd gear. It has been adjusted correctly. I'm not quite sure where to go next. I might look at an exedy twin once this once wears out. Its very easy to slip/ride out, and launches well with the 2step.

More info later!
I'll post pics of the build and the mivec adaption etc.

Cheers, Mike

 

Nice Sleeper.

 

Great project

I'm planning to swap in a Evo 6 engine as well into my GSR. Will do a write up once i get to it.

Goodluck with your project

 

Here's another update.
engine build plan is coming along well.

Parts i have so far (or on the way) -

Manley H beam rods
CP Pistons 9:1 comp
4g64 OEM 2nd hand crank 100mm stroke
ACL bearings
ARP rod/head/main bolts
Mivec Head
GSC S1 cams
Supertech 1mm oversize valves
Supertech valve seals/guides
FP anti surge compressor housing
FP oil line for high boost pressure
Balance shaft delete

I'm going to be coating as much as the engine as possible.
*Piston crowns and skirts
*Combustion chamber and valves
*Exhaust ports.
All to try and get the engine as efficient as possible, and reduce chances of detonation.


Things i already have -
FP Red turbo
Link G4 Extreme ECU
1000cc Delphi injectors
synapse BOV
44mm Tial wastegate
Full 3" custom exhaust
crappy intercooler (going to replace)

the plan is once Carl has built the head up, i'll drop the engine out of the car and we'll build that. I can wait!

aiming for 430-480whp with wicked response! Full boost by 3500 please!
(mirage is currently 360whp @ 23psi and aggressive spool cam timing).

Cheers, Mike

 

pics added on 2nd post

 

Hi

Just wondering why did you go s1 for cams, some of the big tuners on here swear by s2 and also claim no loss in spool?

also why did you go to the link ecu?

Just interested to know your reasoning

Cheers
Calvin

 

Hey Calvin

i dont like my kelford 272's with my current setup. so i didn't want to overcam the new motor.
people claim kelfords have no loss in spool, but with me there was alot.
268 with 11mm intake and 10.5mm exhaust lift is enough imo.
Response is the winner in such a small fun car

Link ECU was chosen because it can do everything, with room for more. there aren't alot of people (read: aren't any people that are good) that can tune the stock ECU in New Zealand that i trust.
Carl Ruiterman (www.ehmotors.co.nz) is helping me with the build, and he's a wizz on the Link. So it made sense. Also because i'm going to Mivec Head, i'd need an ECU that could control that.

Cheers, Mike

 

Hey

Thanks for reply, sounds good. For the power level you are going for i have read oversize valves are unnessecary any reason you opted to do this?
Response is everything i like the way you are going about this build..

How much did the link cost and how much to tune each time?

Cheers
Calvin

 

the mivec head i got needed new valves, so myself and Carl decided why not go for oversize. he can work his magic on the porting etc so they work well.
If i recall correctly the Link cost me about $2700. I went for the Xtreme rather than the Storm just for flexibility and future proofing. We'll be adding the Knock block to it too. Seeing as the Mirage is semi-sponsored by Carl, he does tuning for me for a very good rate. And i help me out around the place, so it all evens out