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Sirius Dash MPI with a G64


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#1 Bag-O-Chips

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Posted 29 June 2010 - 12:53 AM

Alright, we all know the JDM EDM and Australian market got the 2.0 4G63 SOHC Sirius Dash motor. The Sirius engine capacity was 2.0 L with the Sirius 4G63 2.0 L engine, subsequently featured in DOHC form in the Mitsubishi Lancer Evolution series of automobiles. However, American customers received the larger Astron G54B 2.6 L engine, but without any additional horsepower. Neither engines were DOHC. After 1987, European Starion models were also fitted with the 2.6 L engine, as was the GSR-VR for Japan. Both engines featured computer controlled fuel injection and turbocharging.

Basically any form of 4G6[X] is in the Sirius family. Mighty Max's from certain years 1990Ė1993 2.4 L 4G64 I4, 116 hp share the same basic lay out as the Sirius Dash motor and have ECI Multi to begin with.  The older Starions such as the EX and 2000GSR had the 2.0 4G63 SOHC. The cylinder heads of both SOHC 4G64 and 4G63 are a bolt on affair also, Coming to the point

If you use a 2.4 4G64 wide block, Sirius Dash oil pump, Sirius dash cylinder head (stellite exhaust valves and Cam specified for turbo) , OE MPI manifold, Turbo manifold from the 4G63 Sirius Dash motor, Stock ECI Multi ECU from the Mighty Max, appropriately sized injectors and Fuel pump(of course you would lower the compression from 10.0:1)  

You would basically have a 2.4 version of the Sirius Dash motor. Although it will be slightly smaller than the 2.6, it is an alternative that bolts right up, faces the right way, already Multi-port injected and has less head aches with cooling and ancilliaries. But as any motor swap, it will take some time to tune and get it all straightend out.  I'm sure we can get certain parts from out brothers and sisters from AUSTARION.com :)

I'd like to hear people's opinions. Like I said, this is just a concept and not a full blown swap just yet. Who knows maybe someone has already done this ^_^

-Chips

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#2 Komeuppance

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Posted 29 June 2010 - 01:55 AM

Finding a Dash head will be very difficult in any situation, here in the states, or down under.

You will have far better results with a 4g64 block and a twin cam head.

Unless you are doing it for the appeal of the DASH.

View PostBag-O-Chips, on 29 June 2010 - 12:53 AM, said:

If you use a 2.4 4G64 wide block, Sirius Dash oil pump, Sirius dash cylinder head (stellite exhaust valves and Cam specified for turbo) , OE MPI manifold, Turbo manifold from the 4G63 Sirius Dash motor, Stock ECI Multi ECU from the Mighty Max, appropriately sized injectors and Fuel pump(of course you would lower the compression from 10.0:1)  

I don't believe the 2.4 MPI manifold will bolt up to a DASH head, a custom manifold will have to be made for MPI.  Also, using the 2.4 N/A ecu in a boosted application is not the way to go, there is a much greater potential (SUPER POTENTIAL perhaps) with an aftermarket ECU.  You will need an aftermarket controller or an ECU that can control the DASH head as well.

-Robert

Edited by Komeuppance, 29 June 2010 - 02:00 AM.

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#3 Dred_85.5_TSI

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Posted 29 June 2010 - 01:56 AM

Yup its basically been done just with the 4g63 DOHC head from the eclipse, check out the engine swappers section

Also see this
Posted Image   1984 Starion ES: Currently running 15psi, Stock block (ARP main and head studs rod bolts, Clevite bearings) BSEK, M28 NJV head with mechanical valve train gasket matched on intake and exhaust, Treadstone exhaust manifold and Holset HX35w with BEP turbine housing, MK1 3" stainless exhaust, Old skool HKS super BOV, 3" GM MAF with MAFT, Artinist's old 4" core intercooler, custom Aluminium hard pipes, S13/SR20 Aluminium radiator w/clutch fan, Innovate LC-1 wide band O2, `83 crank pulley with A/C removed.
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#4 Bag-O-Chips

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Posted 29 June 2010 - 02:19 AM

the Dash head is the same head that is used in the Mighty Max 4g64 SOHC. It just doesn't have the Cam and exhaust valves for the application

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#5 jdm_ef9412

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Posted 29 June 2010 - 07:48 AM

The sohc dash 4g63 head actually flows less cfm than the sohc 4g64 not to mention the combustion chamber being shaped a little different as well . It would be much better to use the whole 4g64 longblock with custom pistons ...unless somehow you could get the off the self 4g64 Twincam  set to work ....I have also been thinking about this for a while now I have the dash turbo manifold and compressor ...have already fitted it to my sohc 4g64 mightymax and fits great ... I plan on getting a xtra set of g54b arp studs and use those on the 64 with customs cut spacers seeing as they are a little to long to use ... will get some pics up wensday of the manifold and other stuff

#6 redzone

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Posted 29 June 2010 - 08:27 AM

View PostBag-O-Chips, on 29 June 2010 - 02:19 AM, said:

the Dash head is the same head that is used in the Mighty Max 4g64 SOHC. It just doesn't have the Cam and exhaust valves for the application


as someone who has done pretty much what you're planning, let me straighten a few things out:

the DASH head is a 12 valve head, the 4G64 and 4G63 sohc heads are 8 valve, and are a completely different casting, with NO MPI manifold available for the DASH 12V head (has 2 intake ports/valves, one exhaust as per normal), also no starions were ever sold in aus with anything other than an 8 valve 4G63.

forget about the 12V dash head!

what you need to do is this:

get a 6 bolt Gen 1 4G64 (ie pre 93) sohc with MPI from a US mighty max, get the distributor and mpi manifold with it, and ditch the factory loom and ecu. run something like a haltech, ems or other suitable "standalone" ecu, these have inbuilt map sensors reading to 22psi or thereabouts.

rebuild the motor using forgies if u want, the dohc ones have dishes though, you want flat or near flat for a 64 sohc head, unless u want to run MEGA BOOST! also an option is to fit oil squirters, the 6 bolt blocks (ONLY) have provisions for the oil squirters to be drilled and tapped.

acquire an aussie 8V starion exhaust manifold (i can help here, pm me if interested), and port it out to match the 4G64 head's huge ports, and port the turbo flange opening up to match the...

TD06-20G or if you're really silly a TD06-25G, these bolt on to a starion manifold using a TD05H type exhaust housing, with minor mods we all know here. the TD06 cartridge goes into a modded TD05H exh housing easily.

16 psi will give you 300hp at the wheels and be MEGA useable, heaps of power under the curve (20G - this i know for a fact).

TBH you probably dont even need forgies for 16psi if your tune is good. these engines run the pistons with the thin rings/thick lands, so they dont crack pistons easily like the 4G63 8 valve starion motor tends to when cylinder pressures get too high..

the car that particular engine is fitted to is an animal, it's awesome. and he hasnt even turned the wick up yet..

Edited by redzone, 29 June 2010 - 08:30 AM.

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#7 jdm_ef9412

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Posted 29 June 2010 - 12:37 PM

Well put.... the 4g63 8v sirus head is what I was actually comparing the 64 head to ....with the dash head you would also need a way to open the xtra 4 valves.    With the intake manifolds which flows better the 4g64 van plenum or the us 4g64 mighty max. Also would it be worth the trouble to mod a sohc 8v 4g64 sonata intake manifold to fit a rwd application. So that it could be a front facing manifold....

#8 MainstreaM

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Posted 01 July 2010 - 12:39 AM

DASH FYI
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EX Mani
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K/Thx/Bye

#9 jinx

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Posted 03 July 2010 - 04:22 AM

one of the most impressive starions I can recall seeing on austarion, simply turbocharged the truck 2.4L sohc motor.
- Moded stock pistons to reduce the compression slightly (due to track use)
- Big plenum onto the stock intake manifold
- custom reground camshaft
- gt30 on custom header
- GM ecu/tuned
same thing I plan for my 4g64 sohc. Keep life simple

#10 Dave-O

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Posted 04 July 2010 - 03:44 AM

If I'm not mistaken, the SOHC truck 4Gs [both 2.0 and 2.4 flavors] have a paired exhaust port orientation like the Dash.

I wouldn't mind finding the limits of a stock truck longblock.

View Postdmyers151, on 08 June 2010 - 07:29 AM, said:

I see you got that Limited Edition ish.

#11 Bag-O-Chips

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Posted 04 July 2010 - 01:12 PM

well, the dash exhaust manifold should fit the G64's head...theoretically speaking :blush:

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#12 redzone

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Posted 10 July 2010 - 09:21 PM

fyi the dash and 8v exhaust manifolds fit up the same, but are a different shape, the one kane posted above is a sohc 8v non dash one, same as aussie ones had.
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#13 Technology

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Posted 10 July 2010 - 10:32 PM

Stock/unopened 4g63's have made over 500awhp.

big turbo and injectors and a good tune is all you really need.
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#14 redzone

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Posted 14 July 2010 - 07:43 AM

View PostTechnology, on 10 July 2010 - 10:32 PM, said:

Stock/unopened 4g63's have made over 500awhp.

big turbo and injectors and a good tune is all you really need.

twin cam yes, but he's talking single cam.. the early ones had a shithouse piston design which was prone to cracking ring lands over 15psi no matter how good your tune is, that's the bane of the aussie starion owner, you either have to put forgies in or dohc type cast pistons to get the thin ring/thick land design..
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#15 MainstreaM

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Posted 14 July 2010 - 06:59 PM

View Postredzone, on 10 July 2010 - 09:21 PM, said:

fyi the dash and 8v exhaust manifolds fit up the same, but are a different shape, the one kane posted above is a sohc 8v non dash one, same as aussie ones had.

Just haven't had time to get a pic of the correct DASH ex mani.  Will take a pic just for you.  ;)

Kane

#16 2manytoyz

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Posted 15 August 2010 - 02:11 PM

So i have the 6 bolt 2.4 and what all quest parts would i need to swap over to get it bolted in and buttoned up?
Clutch parts?
assessary drive?

also if i wanted to put that 1g head on how much harder would it be?

And finally i can use the oil squirters right?But the engine would have to be completly dismanteled and i dont think im gonna do that just yet.

Bottom line is i have a couple good stock g54b engines but i would love to use that 4g64 just for the fact that its different and could run the dohc head.

How much power difference between the 8v mightymax head and a dohc? lets say a 16g turbo is on it
PARTING OUT A 88 SHP CAR

#17 MainstreaM

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Posted 04 September 2010 - 09:54 AM

View Postredzone, on 10 July 2010 - 09:21 PM, said:

fyi the dash and 8v exhaust manifolds fit up the same, but are a different shape, the one kane posted above is a sohc 8v non dash one, same as aussie ones had.

here you go mate, one DASH split pulse manifold.
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#18 damageinc86

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Posted 09 July 2020 - 11:46 AM

Necro here,...but what if you don't even care about tuning, and racing, and boosting, and making a lot of power, but just want MPI and a daily driver that has as decent acceleration as the stock g54?  Would the MMax motor be just fine as is?

#19 SFBMX88

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Posted 11 July 2020 - 01:16 AM

It should have no problem hauling a Starquest around, but it will have the anemic power band of a truck.  Donít expect any excitement if you keep a sohc g64 stock.  Also, ringlands cracking would most likely be due to insufficient ring gap.

#20 damageinc86

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Posted 11 July 2020 - 11:31 PM

View PostSFBMX88, on 11 July 2020 - 01:16 AM, said:

It should have no problem hauling a Starquest around, but it will have the anemic power band of a truck.  Don't expect any excitement if you keep a sohc g64 stock.  Also, ringlands cracking would most likely be due to insufficient ring gap.

Yeah, that makes sense.  I'm coming from a 1980 civic to a starion,...so this is like driving a race car already lol.  My standards aren't that high.  I just feel like it might be nice someday to have the most plug n play version of an mpi mitsu engine swap possible.




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